Numerical Simulation and Model of Deformation Features of Destabilized Mining Slope Under Fault-Controlled Conditions

Yiqing Lv

doi:10.15446/esrj.v24n1.85290

Abstract

This paper took the Fengmaoding slope, typically found in the mountainous areas of central Shanxi province, as its research area. The stratum structure of the Fengmaoding slope is a typical coal measures stratum covered by a layer of loess. There are communication towers on the slope mass and top of the slope; railways, roads, and rivers at the foot of the slope. There are many villages across from the slope, therefore, the buildings and structures nearby, even the lives of the villagers are threatened by the damages caused by the deformation of the slope. Tectonic development and mining activities have very profound effects on the stability of the slope. Considering the above, this paper analyzed the effects of the fault in controlling the deformation features of the destabilized slope during underground mining by adopting the method of numerical simulation from these perspectives including displacement, stress, strain, among others. under different circumstances (the faulted and unfaulted) so as to provide guidance for future studies about landslides of the same type and give preventive proposals for reference.

Highlights

Shanxi province is known for its abundance in coal resources
Yang & Huang (1999) used elastic-plastic finite element analysis to discuss the changing patterns of stress field and displacement field induced by underground coal extraction, and he put forward the geological pattern for the deformation mechanism of the slope during extraction; Song & Nie (2003) discussed the changing pattern of the slope by analyzing different combinations of the directions of underground mining and the structural types of the rock mass of the slope; Fan (2006) made an in-depth analysis on the process of deformation damage at the mined-out side-slope and summarized the evaluation steps, key points, etc. of the loess side-slope
Taking the Fengmaoding slope typically found in the mountainous areas of central Shanxi province as its studying object, this paper adopted the method of numerical simulation to analyze the effects of the fault in controlling the deformation features of the destabilized slope during underground mining by adopting the method of numerical simulation from these perspectives including displacement, stress, strain, etc. under different circumstances so as to provide guidance for the future studies about landslides of the same type and give preventive proposals for reference

Summary

Introduction

Shanxi province is known for its abundance in coal resources. With the continuous development of coal mining, the mined-out area resulting from coal mining accounts for 98.6% of the total mined-out area in Shanxi and this helps the formation of mining landslide.

Results

Conclusion