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This paper establishes an intelligent framework for real-time prediction of trajectory deviations in the process of earth pressure balance (EPB) tunnelling. A hybrid model was developed which integrates principal component analysis (PCA) and a gated recurrent unit (GRU). PCA was adopted to mine the interrelated input parameters and reduce the accompanying data noise. A scroll window mode was implemented in the GRU to predict the shield movement in real time. The proposed PCA–GRU model was implemented and validated through a case study of the Guang-Fo intercity railway in Guangzhou, China. Another three machine learning models were also used for comparison. The results revealed that the proposed model predicted the shield moving trajectory with higher precision than other models. The implications for trajectory regulation were discussed using field data. The proposed prediction framework represents a promising solution for real-time prediction of the shield moving trajectory in EPB tunnelling.
Nan Zhang; Ning Zhang; Qian Zheng; Ye-Shuang Xu. Real-time prediction of shield moving trajectory during tunnelling using GRU deep neural network. Acta Geotechnica 2021, 1 -16.
AMA StyleNan Zhang, Ning Zhang, Qian Zheng, Ye-Shuang Xu. Real-time prediction of shield moving trajectory during tunnelling using GRU deep neural network. Acta Geotechnica. 2021; ():1-16.
Chicago/Turabian StyleNan Zhang; Ning Zhang; Qian Zheng; Ye-Shuang Xu. 2021. "Real-time prediction of shield moving trajectory during tunnelling using GRU deep neural network." Acta Geotechnica , no. : 1-16.
This study presents a non-linear spring model for modelling the backfill grout consolidation behind shield tunnel lining. Two important parameters, i.e. the time-dependent grout pressure decay induced by consolidation and the grout-cake thickness, were derived through a non-linear spring model and continuity equation. The proposed non-linear spring model for backfill grout consolidation was validated based on vertical pressure and strain relationships determined from an oedometer test. The derived equations were applied to the Groene Hart Tunnel (GHT) project. The results show that the calculated grout pressures agree well with the measured values. The calculated grout-cake thicknesses are in good agreement with the measured values. Two key factors influencing the grout consolidation are discussed: grout diffusion into the soil, and the initial distribution of the grout injection pressure. It is found that grout diffusion into the soil can dissipate the grout pressure quicker than grout consolidation. The distribution of the initial grout injection pressure dominates the final distributions of the grout pressure/grout cake around the tunnel lining.
Xiao-Xue Liu; Shui-Long Shen; Ye-Shuang Xu; Annan Zhou. Non-linear spring model for backfill grout-consolidation behind shield tunnel lining. Computers and Geotechnics 2021, 136, 104235 .
AMA StyleXiao-Xue Liu, Shui-Long Shen, Ye-Shuang Xu, Annan Zhou. Non-linear spring model for backfill grout-consolidation behind shield tunnel lining. Computers and Geotechnics. 2021; 136 ():104235.
Chicago/Turabian StyleXiao-Xue Liu; Shui-Long Shen; Ye-Shuang Xu; Annan Zhou. 2021. "Non-linear spring model for backfill grout-consolidation behind shield tunnel lining." Computers and Geotechnics 136, no. : 104235.
Foundation dewatering combined with a waterproof curtain is widely applied to ensure the safety of the foundation pit in areas with multi-aquifer–aquitard alternative strata. The buried depth of the diaphragm wall can influence the environmental effect due to dewatering obviously. This paper investigates the impact of the buried depth of the diaphragm wall on the groundwater drawdown considering the anisotropic permeability of the dewatering aquifer. Numerical simulation is conducted based on an engineering case. The ratio of penetrating depth of diaphragm wall to thickness of dewatering aquifer (RW) and the ratio of horizontal and vertical hydraulic conductivity of dewatering aquifer (RC) are varied. The relationship between approximate hydraulic gradient (Δi) and RW (or RC) can be fitted by Boltzmann curve (or logarithmic curve). Effective, suggested and control values of RW (or RC) are proposed, of which the suggested value is recommended in practical engineering. The effective, suggested and control value of RW can be calculated by logarithmical equation considering the value of RC.
Xu-Wei Wang; Ye-Shuang Xu. Impact of the Depth of Diaphragm Wall on the Groundwater Drawdown during Foundation Dewatering Considering Anisotropic Permeability of Aquifer. Water 2021, 13, 418 .
AMA StyleXu-Wei Wang, Ye-Shuang Xu. Impact of the Depth of Diaphragm Wall on the Groundwater Drawdown during Foundation Dewatering Considering Anisotropic Permeability of Aquifer. Water. 2021; 13 (4):418.
Chicago/Turabian StyleXu-Wei Wang; Ye-Shuang Xu. 2021. "Impact of the Depth of Diaphragm Wall on the Groundwater Drawdown during Foundation Dewatering Considering Anisotropic Permeability of Aquifer." Water 13, no. 4: 418.
Land subsidence is a severe geo-hazard in coastal regions and represents a great threat to infrastructure. Based on long-term measurement data, including that for deep compaction from vertical multipoint extensometers, land subsidence and infrastructural settlement from leveling surveys, groundwater levels in multiple confined aquifers, and hydrogeological conditions, this study investigates the effects of groundwater exploitation and recharge on land subsidence and the settlement of infrastructure in Shanghai, China. Further, groundwater exploitation and the consequent responses of piezometric heads in the multiple confined aquifers of Shanghai soft deposits are discussed. Subsequently, regional land subsidence, local deep-soil deformation, and infrastructural settlement are analyzed in terms of groundwater exploitation. It is found that the subsidence pattern is related to the trend of groundwater exploitation and the variation of piezometric heads in the aquifers, which can be roughly divided into three phases. Subsidence funnels could occur, and could be interpreted according to the differences in groundwater exploitation intensity and the spatial variability of lithology. Since the towers of Nanpu Bridge are located within the area of the subsidence funnel, this could be the main reason for the differential settlement of the bridge.
Ming-Guang Li; Jin-Jian Chen; Ye-Shuang Xu; Da-Gui Tong; Wei-Wei Cao; Yu-Jin Shi. Effects of groundwater exploitation and recharge on land subsidence and infrastructure settlement patterns in Shanghai. Engineering Geology 2021, 282, 105995 .
AMA StyleMing-Guang Li, Jin-Jian Chen, Ye-Shuang Xu, Da-Gui Tong, Wei-Wei Cao, Yu-Jin Shi. Effects of groundwater exploitation and recharge on land subsidence and infrastructure settlement patterns in Shanghai. Engineering Geology. 2021; 282 ():105995.
Chicago/Turabian StyleMing-Guang Li; Jin-Jian Chen; Ye-Shuang Xu; Da-Gui Tong; Wei-Wei Cao; Yu-Jin Shi. 2021. "Effects of groundwater exploitation and recharge on land subsidence and infrastructure settlement patterns in Shanghai." Engineering Geology 282, no. : 105995.
This paper summarized the shallow geothermal resources within a depth of 200 m in China. This geothermal resource is divided into five regions based on the geological structures, geomorphology, geology, and hydrogeology. The recoverable amount of shallow geothermal energy (SGE) is equivalent to 7 × 1012 kg of standard coal in a survey area of 1.69 ×105 km2, 60% of which is distributed in the mid-eastern region of China. SGE is mainly used for building heating and cooling via ground source heat pump (GSHP) technology since 1990s. The coefficient of performance (COPs) of the GSHP system exhibits large regional differences, and the energy utilizing efficiencies of GSHP systems are not high. The utilization rate of SGE is still low compared with those of other forms of renewable energy. Some measures, including a standardized and simplified management system, a feasible evaluation and utilization plan, modified technology and standards, an intelligence environmental impact assessment, and intelligence monitoring, can be considered to enhance the utilization efficiency of SGE.
Ye-Shuang Xu; Xu-Wei Wang; Shui-Long Shen; Annan Zhou. Distribution characteristics and utilization of shallow geothermal energy in China. Energy and Buildings 2020, 229, 110479 .
AMA StyleYe-Shuang Xu, Xu-Wei Wang, Shui-Long Shen, Annan Zhou. Distribution characteristics and utilization of shallow geothermal energy in China. Energy and Buildings. 2020; 229 ():110479.
Chicago/Turabian StyleYe-Shuang Xu; Xu-Wei Wang; Shui-Long Shen; Annan Zhou. 2020. "Distribution characteristics and utilization of shallow geothermal energy in China." Energy and Buildings 229, no. : 110479.
Natural hazards have a significant impact on the sustainable development of human society. This paper reports on the catastrophic floods in western Japan in 2018. Continuous rainfall resulted in catastrophic floods, leading to 212 deaths, damage to more than 2000 houses and 619 geological disasters in 31 prefectures. The causes and contributing factors of these catastrophic floods are analyzed. The analysis of the causes of typical natural hazards provides an important lesson for hazard prevention and management. To adapt to climate change and prevent natural hazards in the future, the preliminary investigation and sustainable perspective analysis in this paper suggest the importance of the construction of a spongy city and the establishment of an early warning system with the help of information science and artificial intelligence technologies (ISAIT); we also highlight the urgent need to improve and strengthen the management of infrastructure.
Song-Shun Lin; Ning Zhang; Ye-Shuang Xu; Takenori Hino. Lesson Learned from Catastrophic Floods in Western Japan in 2018: Sustainable Perspective Analysis. Water 2020, 12, 2489 .
AMA StyleSong-Shun Lin, Ning Zhang, Ye-Shuang Xu, Takenori Hino. Lesson Learned from Catastrophic Floods in Western Japan in 2018: Sustainable Perspective Analysis. Water. 2020; 12 (9):2489.
Chicago/Turabian StyleSong-Shun Lin; Ning Zhang; Ye-Shuang Xu; Takenori Hino. 2020. "Lesson Learned from Catastrophic Floods in Western Japan in 2018: Sustainable Perspective Analysis." Water 12, no. 9: 2489.
This paper presents a comprehensive review on subsea jet trenching technology via a critical analysis of its principle, mechanism, devices, modeling approaches, as well as properties of subsea sediments. This review shows that the success of jet trenching operations is closely related to some key factors including the soil conditions, trencher specifications, and characteristics of pipelines or cables. Three case histories are presented to demonstrate the importance of these key factors and their interrelationships. This paper also points out a number of challenges pertaining to the implementation of the jet trenching method in carbonate sediments, as well as some limitations and gaps in the existing modeling approaches. Future perspective researches that are recommended to develop: (1) promising theories, like turbulent submerged flow, and (2) robust numerical approaches, such as the smoothed particle hydrodynamics (SPH) and material point method (MPM) to substantiate the experimental experience and reveal possible hidden mechanisms.
Pierre Guy Atangana Njock; Qian Zheng; Ning Zhang; Ye-Shuang Xu. Perspective Review on Subsea Jet Trenching Technology and Modeling. Journal of Marine Science and Engineering 2020, 8, 460 .
AMA StylePierre Guy Atangana Njock, Qian Zheng, Ning Zhang, Ye-Shuang Xu. Perspective Review on Subsea Jet Trenching Technology and Modeling. Journal of Marine Science and Engineering. 2020; 8 (6):460.
Chicago/Turabian StylePierre Guy Atangana Njock; Qian Zheng; Ning Zhang; Ye-Shuang Xu. 2020. "Perspective Review on Subsea Jet Trenching Technology and Modeling." Journal of Marine Science and Engineering 8, no. 6: 460.
This paper reports on a water inrush hazard, which occurred during the construction of the Chaoyang tunnel in Libo County, Guizhou Province, China. On 10 June 2018, a continuous water inflow of about 57 thousand m3 of water within 40 min took place at the tunnel excavation face, resulting in three casualties. The objectives of this study are to investigate and discuss the water inrush process of this atypical case. Further, an inclusive description of the implemented emergency responses will be provided. The principal causes of this tunneling incident include the karst geological condition at the construction field, hydraulic conductivity induced by the connection between karst water system and surface water body, and effects of excavation and precipitation. Moreover, based on a preliminary investigation and analysis, three main control measures to overcome similar incidents in the future are proposed: (1) Performing “water inrush risk grading” in areas prone to water inrush; (2) undertaking comprehensive geological forecast for a synthetic analysis; and (3) employing a monitoring system during the construction, and educating workers on self-protection skills. These effective management measures are bound to benefit underground engineering constructions with regard to water inrush risks.
Nan Zhang; Qian Zheng; Khalid Elbaz; Ye-Shuang Xu. Water Inrush Hazards in the Chaoyang Tunnel, Guizhou, China: A Preliminary Investigation. Water 2020, 12, 1083 .
AMA StyleNan Zhang, Qian Zheng, Khalid Elbaz, Ye-Shuang Xu. Water Inrush Hazards in the Chaoyang Tunnel, Guizhou, China: A Preliminary Investigation. Water. 2020; 12 (4):1083.
Chicago/Turabian StyleNan Zhang; Qian Zheng; Khalid Elbaz; Ye-Shuang Xu. 2020. "Water Inrush Hazards in the Chaoyang Tunnel, Guizhou, China: A Preliminary Investigation." Water 12, no. 4: 1083.
Shenzhen has abundant river systems, intense tectonic activity and complex geological conditions. The depth of Quaternary deposits is thin and uneven, and the primary bedrock comprises granite with various degrees of weathering, which covers more than 50% of the area of Shenzhen. Karst strata have developed in the eastern part of Shenzhen, and there are five groups of fracture zones in the area. Shenzhen also has some problematic soils, including granite residual soil, and muddy clay and silt. Metro tunnels are constructed using the shield tunnelling method. In Shenzhen, different strata are encountered during metro shield tunnelling, including upper-soft and lower-hard strata, hard rock strata, soft–hard alternating strata, under-crossing river or reservoir strata, muddy clay and silt strata and granite residual soil strata. The various strata encountered during shield tunnelling may result in a series of problems with the geological environment. Environmental geological problems during tunnelling are different for different strata, among which the major issues include serious cutter wear, difficulty in controlling the trajectory of the shield machine, shield machine jam, roof fall and slurry spewing. Different countermeasures should be implemented according to the characteristics of the strata to ensure the safe construction of metro tunnels. In this study, a case study of the Shenzhen Metro Line 10 is introduced, where tunnels pass through three specific strata: hard rock strata, boulder strata and under-crossing reservoir strata. In the future, more engineering cases that pass through different strata can be summarized according to the tunnel construction project in Shenzhen.
Xi-Cun He; Ye-Shuang Xu; Shui-Long Shen; An-Nan Zhou. Geological environment problems during metro shield tunnelling in Shenzhen, China. Arabian Journal of Geosciences 2020, 13, 87 .
AMA StyleXi-Cun He, Ye-Shuang Xu, Shui-Long Shen, An-Nan Zhou. Geological environment problems during metro shield tunnelling in Shenzhen, China. Arabian Journal of Geosciences. 2020; 13 (2):87.
Chicago/Turabian StyleXi-Cun He; Ye-Shuang Xu; Shui-Long Shen; An-Nan Zhou. 2020. "Geological environment problems during metro shield tunnelling in Shenzhen, China." Arabian Journal of Geosciences 13, no. 2: 87.
Xu-Wei Wang; Tian-Liang Yang; Ye-Shuang Xu; Shui-Long Shen. Evaluation of optimized depth of waterproof curtain to mitigate negative impacts during dewatering. Journal of Hydrology 2019, 577, 1 .
AMA StyleXu-Wei Wang, Tian-Liang Yang, Ye-Shuang Xu, Shui-Long Shen. Evaluation of optimized depth of waterproof curtain to mitigate negative impacts during dewatering. Journal of Hydrology. 2019; 577 ():1.
Chicago/Turabian StyleXu-Wei Wang; Tian-Liang Yang; Ye-Shuang Xu; Shui-Long Shen. 2019. "Evaluation of optimized depth of waterproof curtain to mitigate negative impacts during dewatering." Journal of Hydrology 577, no. : 1.
To promote sustainable development, the Chinese government launched a new municipal solid waste (MSW) classification strategy in 2017. Shanghai was selected as one of the first pilot cities for MSW classification. The Shanghai municipal government first established the new MSW classification policy in 2017. The Shanghai Municipal Solid Waste Management Regulation was published in 2019 and came into effect on 1 July 2019. This short communication reports on Shanghai's new MSW classification policy and its implementation. The main content and measures adopted by Shanghai's government to ensure the effective implementation of the new MSW classification policy are introduced. Besides, a SWOT (i.e., strengths, weaknesses, opportunities, and threats) analysis on the present policy and measures is conducted, and based on the results, some discussions and suggestions regarding the implementation of MSW classification in Shanghai and the whole of China are presented.
Ming-Hui Zhou; Shui-Long Shen; Ye-Shuang Xu; An-Nan Zhou. New Policy and Implementation of Municipal Solid Waste Classification in Shanghai, China. International Journal of Environmental Research and Public Health 2019, 16, 3099 .
AMA StyleMing-Hui Zhou, Shui-Long Shen, Ye-Shuang Xu, An-Nan Zhou. New Policy and Implementation of Municipal Solid Waste Classification in Shanghai, China. International Journal of Environmental Research and Public Health. 2019; 16 (17):3099.
Chicago/Turabian StyleMing-Hui Zhou; Shui-Long Shen; Ye-Shuang Xu; An-Nan Zhou. 2019. "New Policy and Implementation of Municipal Solid Waste Classification in Shanghai, China." International Journal of Environmental Research and Public Health 16, no. 17: 3099.
Construction accidents are a significant hazard to the community, affecting sustainable development. This paper summarizes the safety situation of the construction industry in China over the past ten years. Detailed analysis is performed on fatal accidents that occurred in 2018 to reveal the spatiotemporal distribution pattern and characters of construction safety accidents. The construction failures are mainly attributed to management aspects rather than technical aspects. A case involving a major accident during shield tunnel construction in Foshan, Guangdong, in 2018 is investigated in detail. Strategic environmental assessment (SEA) is used to analyze the management issues of the Foshan metro project during planning, geological investigation, design, and implementation of construction works. The SEA result shows that the safety risk was very high with a low total SEA score. Based on the analysis, a guideline for safety construction management for sustainability is proposed.
Xin-Hui Zhou; Shui-Long Shen; Ye-Shuang Xu; An-Nan Zhou. Analysis of Production Safety in the Construction Industry of China in 2018. Sustainability 2019, 11, 4537 .
AMA StyleXin-Hui Zhou, Shui-Long Shen, Ye-Shuang Xu, An-Nan Zhou. Analysis of Production Safety in the Construction Industry of China in 2018. Sustainability. 2019; 11 (17):4537.
Chicago/Turabian StyleXin-Hui Zhou; Shui-Long Shen; Ye-Shuang Xu; An-Nan Zhou. 2019. "Analysis of Production Safety in the Construction Industry of China in 2018." Sustainability 11, no. 17: 4537.
Land subsidence was once a major geo-hazard in the city of Shanghai, China. From 1921 to 1965, the maximum cumulative land subsidence in the urban areas of China reached 2.6 m. This large subsidence has resulted in high economic losses for Shanghai. The Regulation of Prevention and Control of Land Subsidence of Shanghai Municipality was published in 2013 (simply cited as the 2013-regulation in the following context). The characteristics of the 2013-regulation included the combination of the subsidence monitoring network and the groundwater detection network due to both the effects of groundwater withdrawal and construction. In addition, the setting up of a supervision system was also incorporated in the 2013-regulation. To control the land subsidence, Shanghai demarcated three land subsidence control zones, where special measures have been implemented. From a strategic environmental assessment (SEA) point of view, the 2013-regulation attains a high total score, indicating that the control of groundwater withdrawal and recharge is effective. The observed land subsidence over the past six years also confirms the effectiveness of the 2013-regulation with the most consideration of SEA for sustainable environment protection in Shanghai. However, more effort should be made in the implementation of SEA in land subsidence control in the future.
Xi-Cun He; Tian-Liang Yang; Shui-Long Shen; Ye-Shuang Xu; Arul Arulrajah. Land Subsidence Control Zone and Policy for the Environmental Protection of Shanghai. International Journal of Environmental Research and Public Health 2019, 16, 2729 .
AMA StyleXi-Cun He, Tian-Liang Yang, Shui-Long Shen, Ye-Shuang Xu, Arul Arulrajah. Land Subsidence Control Zone and Policy for the Environmental Protection of Shanghai. International Journal of Environmental Research and Public Health. 2019; 16 (15):2729.
Chicago/Turabian StyleXi-Cun He; Tian-Liang Yang; Shui-Long Shen; Ye-Shuang Xu; Arul Arulrajah. 2019. "Land Subsidence Control Zone and Policy for the Environmental Protection of Shanghai." International Journal of Environmental Research and Public Health 16, no. 15: 2729.
Yao Yuan; Ye-Shuang Xu; Arul Arulrajah; Da-Jun Yuan. Ground Response due to Construction of Shallow Pipe-Jacked Tunnels in Sandy Soil: Laboratory Investigation. Journal of Testing and Evaluation 2018, 48, 1 .
AMA StyleYao Yuan, Ye-Shuang Xu, Arul Arulrajah, Da-Jun Yuan. Ground Response due to Construction of Shallow Pipe-Jacked Tunnels in Sandy Soil: Laboratory Investigation. Journal of Testing and Evaluation. 2018; 48 (5):1.
Chicago/Turabian StyleYao Yuan; Ye-Shuang Xu; Arul Arulrajah; Da-Jun Yuan. 2018. "Ground Response due to Construction of Shallow Pipe-Jacked Tunnels in Sandy Soil: Laboratory Investigation." Journal of Testing and Evaluation 48, no. 5: 1.
The urban area of Hangzhou is located in the northeast region of the Hangzhou Bay, beside the estuary of the Qiantang River. Three main ancient rivers are present in the case study area. The ancient rivers, together with the influence of three transgressions, influence the geological and hydrogeological formations of the urban area of Hangzhou. Soft clay is widely deposited in the study area and the Quaternary strata are rich in pore water, karst water, and bedrock fissure water. Confined aquifers located in the case study area have high pressure, high permeability, and rich water, and their levels fluctuate with tide. Karst strata, soft clay, ancient confined aquifer, and shallow gas deposits are potential geological features, which may threaten underground construction in the urban area of Hangzhou. As such, corresponding pre-treatments should be adopted to control the potential geohazards. Karst caves are proposed be infilled or reinforced before the commencement of underground construction works. Ground improvement methods can be adopted to enhance the strength of soft soil. Foundation dewatering in foundation pits with pensile curtains can be adopted to control ancient confined aquifers. Pre-exhaustion of shallow gas prior to commencement of construction works is an effective measure to control shallow gas with high pressure. Moreover, the impacts of the Qiantang River tide on the groundwater level and the deformation of underground structures should be considered.
Ye-Shuang Xu; Jack Shuilong Shen; An-Nan Zhou; Arul Arulrajah. Geological and hydrogeological environment with geohazards during underground construction in Hangzhou: a review. Arabian Journal of Geosciences 2018, 11, 544 .
AMA StyleYe-Shuang Xu, Jack Shuilong Shen, An-Nan Zhou, Arul Arulrajah. Geological and hydrogeological environment with geohazards during underground construction in Hangzhou: a review. Arabian Journal of Geosciences. 2018; 11 (18):544.
Chicago/Turabian StyleYe-Shuang Xu; Jack Shuilong Shen; An-Nan Zhou; Arul Arulrajah. 2018. "Geological and hydrogeological environment with geohazards during underground construction in Hangzhou: a review." Arabian Journal of Geosciences 11, no. 18: 544.
Pipe-jacking is a construction method widely used in pipeline constructions. Prediction of ground deformation induced by pipe-jacking, is important for safety and scheduling purposes. This paper presents an approach to predict ground deformation during pipe-jacking considering following factors: (i) bulkhead additive thrust; (ii) friction on jacking machine; (iii) grouting pressure; and (iv) ground loss. Mindlin’s solution was used to calculate the ground deformation induced by bulkhead additive thrust and friction on the jacking machine. The shearing disturbance coefficient was adopted to evaluate the mitigation effect of shearing behavior on ground deformation. Verruijt’s solution was used to simulate the effect of grouting pressure. Sagaseta’s method was adopted to consider the ground loss induced by over-excavation. Subsequently, a three-dimensional analytical solution for ground deformation induced by pipe-jacking was obtained. A case study based on a pipe-jacking project undertaken in Jiangsu, China was analyzed to validate the proposed approach. The results indicated that the proposed approach was robust and could be implemented for future pipe-jacking projects.
Dong-Jie Ren; Ye-Shuang Xu; Jack S. Shen; Annan Zhou; Arul Arulrajah. Prediction of Ground Deformation during Pipe-Jacking Considering Multiple Factors. Applied Sciences 2018, 8, 1051 .
AMA StyleDong-Jie Ren, Ye-Shuang Xu, Jack S. Shen, Annan Zhou, Arul Arulrajah. Prediction of Ground Deformation during Pipe-Jacking Considering Multiple Factors. Applied Sciences. 2018; 8 (7):1051.
Chicago/Turabian StyleDong-Jie Ren; Ye-Shuang Xu; Jack S. Shen; Annan Zhou; Arul Arulrajah. 2018. "Prediction of Ground Deformation during Pipe-Jacking Considering Multiple Factors." Applied Sciences 8, no. 7: 1051.
The Yangtze River Basin and Huaihe River Basin in Southern China experienced severe floods 1998 and 2016. The reasons for the flooding hazards include the following two factors: hazardous weather conditions and degradation of the hydrological environment due to anthropogenic activities. This review work investigated the weather conditions based on recorded data, which showed that both 1998 and 2016 were in El Nino periods. Human activities include the degradations of rivers and lakes and the effects caused by the building of the Three Gorges Dam. In addition, the flooding in 2016 had a lower hazard scale than that in 1998 but resulted in larger economic losses than that of 1998. To mitigate urban waterlogging caused by flooding hazards, China proposed a new strategy named Spongy City (SPC) in 2014. SPC promotes sustainable city development so that a city has the resilience to adapt to climate change, to mitigate the impacts of waterlogging caused by extreme rainfall events. The countermeasures used to tackle the SPC construction-related problems, such as local inundation, water resource shortage, storm water usage, and water pollution control, are proposed for city management to improve the environment.
Hai-Min Lyu; Ye-Shuang Xu; Wen-Chieh Cheng; Arul Arulrajah. Flooding Hazards across Southern China and Prospective Sustainability Measures. Sustainability 2018, 10, 1682 .
AMA StyleHai-Min Lyu, Ye-Shuang Xu, Wen-Chieh Cheng, Arul Arulrajah. Flooding Hazards across Southern China and Prospective Sustainability Measures. Sustainability. 2018; 10 (5):1682.
Chicago/Turabian StyleHai-Min Lyu; Ye-Shuang Xu; Wen-Chieh Cheng; Arul Arulrajah. 2018. "Flooding Hazards across Southern China and Prospective Sustainability Measures." Sustainability 10, no. 5: 1682.
This paper reports on a massive landslide event, in which 8 million cubic meters of earth and rocks slid down from the top of a mountain in the village of Xinmo, located in the county of Maoxian, in the province of Sichuan, China, on 24 June 2017. This landslide resulted in 10 fatalities and 73 people were reported as missing. This paper details the preliminary investigation, the joint-force rescue activity, and the analysis of the nearby topography, rainfall, and seismic fracture zone. The combined effects of large amounts of rainwater, steep topography, deep-seated sliding interface, and significant altitude difference between the highest point of the mountain and the Xinmo villagers’ houses are considered as the main influencing factor that triggered this landslide event. To develop geological disaster-prone areas in the future, four main recommendations to reduce casualties and environmental impacts are provided in this paper.
Wanlin Meng; Yeshuang Xu; Wen-Chieh Cheng; Arul Arulrajah. Landslide Event on 24 June in Sichuan Province, China: Preliminary Investigation and Analysis. Geosciences 2018, 8, 39 .
AMA StyleWanlin Meng, Yeshuang Xu, Wen-Chieh Cheng, Arul Arulrajah. Landslide Event on 24 June in Sichuan Province, China: Preliminary Investigation and Analysis. Geosciences. 2018; 8 (2):39.
Chicago/Turabian StyleWanlin Meng; Yeshuang Xu; Wen-Chieh Cheng; Arul Arulrajah. 2018. "Landslide Event on 24 June in Sichuan Province, China: Preliminary Investigation and Analysis." Geosciences 8, no. 2: 39.
Prediction of time‐dependent groundwater inflow into a shield tunnel is a significant task facing engineers. Published literature shows that there is no available method with which to predict time‐dependent groundwater inflow into a tunnel. This paper presents a prediction approach for time‐dependent groundwater inflow into a tunnel in both anisotropic and isotropic confined aquifers. The proposed solution can predict groundwater inrush from the tunnel cutting face. To obtain the time‐dependent groundwater flow quantity, the concept of a horizontal‐well pumping test based on the theory of a point source is adopted. Multiple factors, eg, drawdown, thickness of aquifer, conductivities, and specific storage, are taken into account. Both groundwater inflow to the cross section of a tunnel face in the y‐z plane and total tunnel inflow are obtained. Based on the proposed approach, the time‐dependent groundwater inflow to a tunnel can be classified as either a uniform or non‐uniform flow. The proposed approach is applied to analyse groundwater inflow of 2 field cases: (1) Metro line No. 7, Guangzhou City and (2) an underground tunnel in Huizhou, Guangdong Province. Results show that the proposed method can predict the measured values, and drawdown‐related curves are also derived. In addition, the calculated results also reveal that the effect of hydraulic conductivity kz on the total groundwater inflow differs from that of hydraulic conductivities kx and ky and the thickness of the aquifer.
Xiao-Xue Liu; Shui-Long Shen; Ye-Shuang Xu; Zhen-Yu Yin. Analytical approach for time-dependent groundwater inflow into shield tunnel face in confined aquifer. International Journal for Numerical and Analytical Methods in Geomechanics 2017, 42, 655 -673.
AMA StyleXiao-Xue Liu, Shui-Long Shen, Ye-Shuang Xu, Zhen-Yu Yin. Analytical approach for time-dependent groundwater inflow into shield tunnel face in confined aquifer. International Journal for Numerical and Analytical Methods in Geomechanics. 2017; 42 (4):655-673.
Chicago/Turabian StyleXiao-Xue Liu; Shui-Long Shen; Ye-Shuang Xu; Zhen-Yu Yin. 2017. "Analytical approach for time-dependent groundwater inflow into shield tunnel face in confined aquifer." International Journal for Numerical and Analytical Methods in Geomechanics 42, no. 4: 655-673.
Ye-Shuang Xu; Huai-Na Wu; Jack S. Shen; Ning Zhang. Risk and impacts on the environment of free-phase biogas in quaternary deposits along the Coastal Region of Shanghai. Ocean Engineering 2017, 137, 129 -137.
AMA StyleYe-Shuang Xu, Huai-Na Wu, Jack S. Shen, Ning Zhang. Risk and impacts on the environment of free-phase biogas in quaternary deposits along the Coastal Region of Shanghai. Ocean Engineering. 2017; 137 ():129-137.
Chicago/Turabian StyleYe-Shuang Xu; Huai-Na Wu; Jack S. Shen; Ning Zhang. 2017. "Risk and impacts on the environment of free-phase biogas in quaternary deposits along the Coastal Region of Shanghai." Ocean Engineering 137, no. : 129-137.