Parameter inversion and location determination of evolutionary weak layer for open-pit mine slope
Zhao Hongze1
Wang Dongyu2
Ma Ming3
Zheng Kaihui4
1.School of Energy and Mining Engineering,China University of Mining and Technology,Beijing 100083,China;State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Beijing 100083,China2.School of Energy and Mining Engineering,China University of Mining and Technology,Beijing 100083,China3.Beijing Reliance Coal Research Institute,Beijing 100083,China4.North Weijiamao Coal Power Co.Ltd.,Ordos 010308,Inner Mongolia,China
摘要：In light of the complex and dynamic mechanical properties of evolving weak strata in open-pit mines,and the consequent difficulty of determining their mechanical parameters,this study uses the ultimate balance theory,along with the back analysis method combined with monitoring data on field displacement,to carry out parameter inversion using the FLAC3D numerical simulation software.The edge slope of a working pit of the Weijiamao open-pit mine was used as research object to this end.As the results obtained by the constitutive model were consistent with the field monitoring data,the evolving weak strata in the slope and the position of the landslide in the mine could be obtained.The landslide was directed northeast.The mechanism of the edge slope of the working pit was identified as unloading shear failure,and the feasibility of the method of parameter inversion was verified.The internal friction angle φ and cohesion C of evolving weak strata in the slope of the open-pit mine were also obtained,where this compensated for the deficiency of laboratory tests and enabled the transformation from qualitative to quantitative analysis.This can provide a reliable basis for the safe operation of open-pit mines.
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论文发表日期：2020-12-30
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：11( 714-724 )
英文信息