A SMALL-SCALE MODEL OF SOFT MATERIALS USED FOR STUDYING THE UNDERGROUND MINING INDUCED DDISCONTINUITY PLANE DEFORMATION

LU Rong; MA Fengshan; GUO Jie; GUO Huigao; KOU Yongyuan

doi:10.12090/j.issn.1006-6616.2018.24.05.067

Volume 24 Issue 5

Oct. 2018

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Article Navigation > Journal of Geomechanics > 2018 > 24(5): 670-675

LU Rong, MA Fengshan, GUO Jie, et al., 2018. A SMALL-SCALE MODEL OF SOFT MATERIALS USED FOR STUDYING THE UNDERGROUND MINING INDUCED DDISCONTINUITY PLANE DEFORMATION. Journal of Geomechanics, 24 (5): 670-675. DOI: 10.12090/j.issn.1006-6616.2018.24.05.067

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A SMALL-SCALE MODEL OF SOFT MATERIALS USED FOR STUDYING THE UNDERGROUND MINING INDUCED DDISCONTINUITY PLANE DEFORMATION

doi: 10.12090/j.issn.1006-6616.2018.24.05.067

LU Rong^{1, 2, 3
,},
MA Fengshan^{1, 2
,
,},
GUO Jie^{1, 2},
GUO Huigao⁴,
KOU Yongyuan⁴

1.
Key Laboratory of Institute Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
2.
Institute of Earth Science, Chinese Academy of Sciences, Beijing 100029, China
3.
College of Geoscience, University of Chinese Academy of Sciences, Beijing 100049, China
4.
Jin Chuan Group Co., Ltd, Jinchang 737100, Gansu, China

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Abstract

Abstract

In order to study surrounding rock deformation and fault activation caused by underground mining, a small-scale model of soft materials is adopted to simulate the s discontinuity plane deformation induced by underground mining. The bending of a horizontal discontinuity plane after activation is studied through the model by simulating the deformation of the surrounding rock at the top of a rectangular underground mining area. The simulation results show that the shear displacement distribution on the discontinuity plane has the feature of bimodal curve, which is verified by numerical simulation. At the same time, the validity of this method is proved. The biggest advantage of this method is that the small-scale model can effectively simulate the deformation of surrounding rock caused by underground mining under the action of self-weight stress, with simple experimental equipment, short time, convenient operation and low cost. It is a physical simulation method worth popularizing.
- small-scale model,
- structural plane,
- bimodal curve,
- self-weight stress,
- underground mining,
- deformation simulation

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References

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