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主要从事深部矿山动力灾害、围岩大变形失稳防治以及深部隧(巷)道TBM施工岩机相互作用方面研究工作,具有较丰富的理论研究和现场工作经验。近年来获得湖北省科技进步特等奖1项,一等奖 2项,安徽省科技进步二等奖1,煤炭工业协会科技进步奖2,3等奖各1项;在国内外期刊上发表 SCI/EI/ISTP 检索论文 40余篇,发明专利10余项。
Massive deformation often occurs when deep coalmine roadways pass through a fault zone due to the poor integrity of rock mass and high tectonic stress. To study deformation characteristics of the surrounding rock in the fault zone of a coalmine, a roadway passing through the FD1041 fault zone in China’s Gugui coalfield was investigated in this research. The geo-stress characteristics of this fault zone were analyzed based on the Mohr failure theory. Furthermore, a three-dimensional model for the experimental roadway in the FD1041 fault zone was built and calculated by a numerical program based on the distinct element method. Stability conditions of the roadway, using several types of support methods, were calculated and compared. Calculation results indicated that pre-grouting provides favorable conditions for the stability of a roadway in a fault zone. Finally, an optimized support strategy was proposed and implemented in the experimental roadway. Monitored results demonstrated that the optimized support strategy is appropriate for this fault zone.
Yongshui Kang; Congcong Hou; Jingyi Liu; Zhi Geng; Jianben Chen; Bin Liu. Numerical Analyses on the Stability of a Deep Coalmine Roadway Passing through a Fault Zone: A Case Study of the Gugui Coalfield in China. Energies 2021, 14, 2114 .
AMA StyleYongshui Kang, Congcong Hou, Jingyi Liu, Zhi Geng, Jianben Chen, Bin Liu. Numerical Analyses on the Stability of a Deep Coalmine Roadway Passing through a Fault Zone: A Case Study of the Gugui Coalfield in China. Energies. 2021; 14 (8):2114.
Chicago/Turabian StyleYongshui Kang; Congcong Hou; Jingyi Liu; Zhi Geng; Jianben Chen; Bin Liu. 2021. "Numerical Analyses on the Stability of a Deep Coalmine Roadway Passing through a Fault Zone: A Case Study of the Gugui Coalfield in China." Energies 14, no. 8: 2114.
Grouting reinforcement plays an important role in repairing fractures and improving the strength of the surrounding rock. To address practical engineering challenges such as caving and chip off-falling of surrounding rock in deep roadways, normal splitting was adopted to prefabricate fractures on rock samples gathered from underground coal mines. This was done to better match the rock fracture specimen with actual conditions. Based on the elementary unit of a fracture surface, systematic experiments were conducted on the tensile properties of rock fractures after grouting reinforcement, and the shear properties were studied after considering the presence of gas. As per the results, the tensile strength of rock fractures increased with the increase in viscosity of grout, but the overall tensile strength was relatively low. The overall tensile effect of surrounding rock was improved less by grouting approach. When the presence of fracture gas in grouting was considered, the peak shear strength of fractures after grouting was 8.34–29.9% less than that without considering the fracture gas. The cemented pore surface produced by unsaturated cementation in the grouting reinforcement was the main cause of reduction in cohesion and frictional angle of rock fractures. The conclusions of this study have great significance for guiding engineering grouting and evaluating the grouting effect.
Bin Liu; Haomin Sang; Zhiqiang Wang; Yongshui Kang. Experimental Study on the Mechanical Properties of Rock Fracture after Grouting Reinforcement. Energies 2020, 13, 4814 .
AMA StyleBin Liu, Haomin Sang, Zhiqiang Wang, Yongshui Kang. Experimental Study on the Mechanical Properties of Rock Fracture after Grouting Reinforcement. Energies. 2020; 13 (18):4814.
Chicago/Turabian StyleBin Liu; Haomin Sang; Zhiqiang Wang; Yongshui Kang. 2020. "Experimental Study on the Mechanical Properties of Rock Fracture after Grouting Reinforcement." Energies 13, no. 18: 4814.
Mudstone material in a deep roadway is under the coupled stress-seepage condition. To investigate the permeability change and damage development during rock excavation in roadways, a stress-seepage damage coupling model has been proposed. In this model, damage capacity expansion of mudstone material is considered as the initiation and propagation of micro-cracks and the fracture penetration. A damage variable is introduced into the proposed model based on the principle of minimum energy consumption. As a result, an elastoplastic damage constitutive equation is established. Then, the permeability evolution equation describing the micro-macro hydraulic behavior of mudstone is deduced via percolation theory, which can describe the characteristics of sudden permeability change after rock capacity expansion. Furthermore, a finite element model is established based on commercial finite element software-ABAQUS. The numerical model was firstly verified by comparison between experimental and simulation results. On the basis of it, numerical investigation of the temporal and spatial evolution law of pore pressure, damage and permeability coefficient during roadway excavation is undertaken. The numerical results indicate that with increase of construction time, pore pressure first increases and then decreases, while the damage zone and permeability coefficient increase gradually and finally nearly keep constant. The proposed coupling model and finite element method can describe damage and permeability evolution for mudstone material under coupled stress-seepage well.
Bin Liu; Jinlan Li; Quansheng Liu; Xuewei Liu. Analysis of Damage and Permeability Evolution for Mudstone Material under Coupled Stress-Seepage. Materials 2020, 13, 3755 .
AMA StyleBin Liu, Jinlan Li, Quansheng Liu, Xuewei Liu. Analysis of Damage and Permeability Evolution for Mudstone Material under Coupled Stress-Seepage. Materials. 2020; 13 (17):3755.
Chicago/Turabian StyleBin Liu; Jinlan Li; Quansheng Liu; Xuewei Liu. 2020. "Analysis of Damage and Permeability Evolution for Mudstone Material under Coupled Stress-Seepage." Materials 13, no. 17: 3755.
Coal burst is a type of dynamic geological hazard in coal mine. In this study, a modified bursting energy index, which is defined as the ratio of elastic strain energy at the peak strength to the released strain energy density at the post-peak stage, was proposed to evaluate the coal burst proneness. The calculation method for this index was also introduced. Two coal mines (PJ and TJH coal mines) located in Ordos coalfield were used to verify the validity of the proposed method. The tests results indicate that modified bursting energy index increases linearly with increasing uniaxial compressive strength. The parameter A, which is used to fit relation between total input and elastic strain energy density, has a significant effect on the modified bursting energy index. A large value of parameter A means more elastic strain energy before the peak strength while a small value indicates most of input energy was dissipated. Finally, the coal burst proneness of these two coal mines was evaluated with the modified index. The results of modified index are consistent with that of laboratory tests, and more reasonable than that from original bursting energy index because it removed the dissipated strain energy from the total input strain energy density.
Xuewei Liu; Quansheng Liu; Bin Liu; Yongshui Kang. A Modified Bursting Energy Index for Evaluating Coal Burst Proneness and Its Application in Ordos Coalfield, China. Energies 2020, 13, 1729 .
AMA StyleXuewei Liu, Quansheng Liu, Bin Liu, Yongshui Kang. A Modified Bursting Energy Index for Evaluating Coal Burst Proneness and Its Application in Ordos Coalfield, China. Energies. 2020; 13 (7):1729.
Chicago/Turabian StyleXuewei Liu; Quansheng Liu; Bin Liu; Yongshui Kang. 2020. "A Modified Bursting Energy Index for Evaluating Coal Burst Proneness and Its Application in Ordos Coalfield, China." Energies 13, no. 7: 1729.
A novel in situ stress monitoring method, based on rheological stress recovery (RSR) theory, was proposed to monitor the stress of rock mass in deep underground engineering. The RSR theory indicates that the tiny hole in the rock can close gradually after it was drilled due to the rheology characteristic, during which process the stress that existed in the rock can be monitored in real-time. Then, a three-dimensional stress monitoring sensor, based on the vibrating wire technique, was developed for in field measurement. Furthermore, the in-field monitoring procedures for the proposed technique are introduced, including hole drilling, sensor installation, grouting, and data acquisition. Finally, two in situ tests were carried out on deep roadways at the Pingdingshan (PDS) No. 1 and No. 11 coal mines to verify the feasibility and reliability of the proposed technique. The relationship between the recovery stress and the time for the six sensor faces are discussed and the final stable values are calculated. The in situ stress components of rock masses under geodetic coordinates were calculated via the coordinate transformation equation and the results are consistent with the in situ stress data by different methods, which verified the effectiveness of the proposed method.
Bin Liu; Yuanguang Zhu; Quansheng Liu; Xuewei Liu. A Novel in Situ Stress Monitoring Technique for Fracture Rock Mass and Its Application in Deep Coal Mines. Applied Sciences 2019, 9, 3742 .
AMA StyleBin Liu, Yuanguang Zhu, Quansheng Liu, Xuewei Liu. A Novel in Situ Stress Monitoring Technique for Fracture Rock Mass and Its Application in Deep Coal Mines. Applied Sciences. 2019; 9 (18):3742.
Chicago/Turabian StyleBin Liu; Yuanguang Zhu; Quansheng Liu; Xuewei Liu. 2019. "A Novel in Situ Stress Monitoring Technique for Fracture Rock Mass and Its Application in Deep Coal Mines." Applied Sciences 9, no. 18: 3742.