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Full-Text Articles in Engineering
Stability Analysis Of An Underground Powerhouse On The Left Bank Of The Baihetan Hydropower Station Based On Discrete Element Simulation And Microseismic Monitoring, Hao-Yu Mao, Nu-Wen Xu, Biao Li, Yi-Lin Fan, Jia-Yao Wu, Guo-Tao Meng
Stability Analysis Of An Underground Powerhouse On The Left Bank Of The Baihetan Hydropower Station Based On Discrete Element Simulation And Microseismic Monitoring, Hao-Yu Mao, Nu-Wen Xu, Biao Li, Yi-Lin Fan, Jia-Yao Wu, Guo-Tao Meng
Rock and Soil Mechanics
To investigate the stability of the surrounding rock during excavation process of the underground caverns at the Baihetan hydropower station, effects of excavation unloading on the deformation and failure of the surrounding rock using the numerical simulation software 3DEC based on DEM (discrete element method) are analyzed. The microseismic monitoring technology is introduced to monitor and analyze micro-fracture evolution inside the surrounding rock of the caverns in real time, and the numerical simulation results are compared with the microseismic monitoring data. In order to verify the accuracy of numerical simulation and microseismic monitoring results, the spatiotemporal evolution law of the …
Physical Experimental Study On Excavation Disturbance Of Tbm In Deep Composite Strata, Lin-Ken Shi, Hui Zhou, Ming Song, Jing-Jing Lu, Chuan-Qing Zhang, Xin-Jing Lu
Physical Experimental Study On Excavation Disturbance Of Tbm In Deep Composite Strata, Lin-Ken Shi, Hui Zhou, Ming Song, Jing-Jing Lu, Chuan-Qing Zhang, Xin-Jing Lu
Rock and Soil Mechanics
In view of the alternating change of soft and hard rock mass in the work face, physical model test and numerical simulation were conducted to investigate the dynamic response of tunnel surrounding rock during the process of TBM excavation in composite strata at the Lanzhou water source construction project. Similar composite rock mass materials with different strength ratios of surrounding rock were prepared by performing analogous proportion experiments. The fiber grating technology was used to capture the strain evolution law of surrounding rock in composite strata during tunnel excavation, and the macroscopic fracture morphology of the surrounding rock of the …
Development And Application Of Contact Algorithms For Rock Shear Fracture Surface, Qiu-Feng Ma, Yue-Ping Qin, Tian-Bai Zhou, Xiao-Bin Yang
Development And Application Of Contact Algorithms For Rock Shear Fracture Surface, Qiu-Feng Ma, Yue-Ping Qin, Tian-Bai Zhou, Xiao-Bin Yang
Rock and Soil Mechanics
To overcome the inefficiency of existing numerical algorithms in calculating the contact slip law of complex fracture surfaces, a new numerical calculation algorithm was proposed by adoption of the idea of boundary element method. In this algorithm, all nodes were located at the boundary of rock blocks, and the interaction force between rock blocks and the displacement of rock blocks were calculated by using the explicit differential method. The algorithm was validated by two simulation experiments, i.e. “ball sliding on paraboloid” and “dumbbell on the inclined plane”. The results show the algorithm can accurately describe the contact between objects and …