Influence of Layer Transition Zone on Rainfall-Induced Instability of Multilayered Slope

Dou, Zhi; Liu, Yimin; Xue-yi, Zhang; Wang, Yashan; Zhou, C.; Wang, Jinguo; Zhou, Zhifang; Xiong, Hao

doi:10.2113/2021/2277284

Cited by 31 publications

(14 citation statements)

References 33 publications

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“…Due to its nonuniformity, cracks, and other factors, the results of mechanical parameters have great randomness and limitations, and there is a large error with the field measured values. In order to make up for the shortcomings of the above methods, this paper uses the geotechnical back analysis method to obtain the parameter value in the numerical calculation [24,25].…”

Section: Calculation Parameter Valuementioning

confidence: 99%

Influence of Water-Resisting Layer Thickness on Fracture Evolution in Karst Tunnel and Control Measures

Jiang

2022

Geofluids

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In this paper, a series of studies are carried out on the hidden karst encountered in the excavation of Baziling tunnel. In this paper, the safe thickness of the water-resisting layer in a hidden karst cave and tunnel is studied by means of engineering geological investigation, numerical simulation, and neural network. The numerical calculation model is established through the geological survey. Innovate to use BP neural network and differentiation algorithm to inverse the rock mechanical parameters. By analyzing the influence of different thicknesses of the water-resisting layer on the deformation and failure of surrounding rock, the final thickness of the water-resisting layer is obtained. At the same time, the influence of water pressure on the thickness of the water-resisting layer is studied, and the treatment scheme under different water pressure is finally determined.

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Section: Calculation Parameter Valuementioning

confidence: 99%

Influence of Water-Resisting Layer Thickness on Fracture Evolution in Karst Tunnel and Control Measures

Jiang

2022

Geofluids

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“…e minimum depth is equal to 188m, which indicates that the possibility of karst collapse caused by the fluctuation of the groundwater level is not substantial. erefore, the infiltration of surface rainwater is one of the main factors of karst collapse [33].…”

Section: Analysis Of Karst Collapse Factorsmentioning

confidence: 99%

Genesis Analysis and Stability Evaluation of Karst Area in the Mudengdong Village Based on the Geological Investigation and Numerical Simulation Methods

Liu

et al. 2022

Shock and Vibration

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The large-scale mining of underground mineral resources will lead to the formation of mined-out areas, which will lead to a series of geological and environmental problems. By selecting the Mudengdong village as a case study, this paper uses geodetic satellite remote sensing technologies to perform qualitative analyses and summarize the geological engineering conditions of the factory. Afterwards, the predominant factors that affect the stability of foundation are determined based on the geological survey of karst in goaf structures. Finally, the finite element software ANSYS is used to comprehensively study the karst problem. The results indicate that (1) the karst development pattern in the study area is controlled by the Beiyin mountain fault, in which case the karst in the basin, in the foot slope, or in the pass section is more widespread than in the slope section. Moreover, the karst generally has a vertical form and is in the early karst stage of development; (2) surface rainwater infiltration, earthquakes, and load pressure are the three major factors that affect karst collapse in the study area; (3) by simulating the development of karst caves and the bearing capacity of the karst roof in the goaf structure under different conditions, it is recommended that only civil buildings with not more than three floors can be built in the village. Overburdened soil thicknesses between 6 and 10 m and civil buildings with heights less than 6 m are not suitable parameters for construction activities. If there are hidden soil holes under the overburden layer, dynamic consolidation needs to be applied in order to destroy the structure of the soil layer and to ensure the safety of personnel.

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“…Many particular disaster problems have been encountered with the strategic transfer of China's coal resources production center from east to west [1][2][3][4][5][6][7][8][9][10][11]. Weakly cemented rocks have low mechanical strength and poor cementation ability.…”

Section: Introductionmentioning

confidence: 99%

Study of the Influence of Clay Minerals on the Mechanical and Percolation Properties of Weakly Cemented Rocks

Guo

Yang

et al. 2022

Geofluids

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The weakly cemented rock layer is easily damaged under the combined effect of seepage and mining disturbance and creates massive engineering disasters. This paper uses the self-designed weakly cemented remodeling mechanism to prepare weakly cemented rock samples with clay minerals accounting for 20%, 30%, 40%, 50%, and 60% of the total. The MTS816 system, in conjunction with an acoustic emission system and a high-speed camera, completed mechanical and seepage tests on the sample. The results show that when the quantity of clay minerals increases, the uniaxial compressive strength, elastic modulus, and rapid crack propagation stress of the weakly cemented rock samples decrease. Initial stress of crack development increases and then decreases, as well as the sample’s failure mode changes from shear to tensile. The sample’s permeability increases with increasing osmotic and axial pressure differential but decreases with increasing confining pressure under the same amount of clay minerals. The sensitivity of permeability to changes in osmotic pressure differential, axial pressure, and confining pressure increases as the amount of clay minerals increases. The mechanical and seepage characteristics can show significant changes in clay minerals in 20% to 30%.

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Influence of Layer Transition Zone on Rainfall-Induced Instability of Multilayered Slope

Cited by 31 publications

References 33 publications

Influence of Water-Resisting Layer Thickness on Fracture Evolution in Karst Tunnel and Control Measures

Influence of Water-Resisting Layer Thickness on Fracture Evolution in Karst Tunnel and Control Measures

Genesis Analysis and Stability Evaluation of Karst Area in the Mudengdong Village Based on the Geological Investigation and Numerical Simulation Methods

Study of the Influence of Clay Minerals on the Mechanical and Percolation Properties of Weakly Cemented Rocks

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