A Study of the Safety and Stability of a High Solid Bench Used in Dragline Works
WANG Zhong-qiang
ZHANG Rui-xin
ZHANG Yong
WU Duo-jin
CHEN De-fu
Abstract：FLAC~(3D) numerical simulation and equilibrium limit methods were used to analyze the stability and safety of a high,solid bench used in dragline operations.The effects of changing bench height,slope angle and load were examined.The safety factor associated with different widths of the remaining coal-pillar was analyzed.The Heidaigou surface coal mine has high solid benches used with dragline operations.Destruction of these benches by single-or double-side sliding was examined by a stereographic projection method.It was found that reasonable and safe parameters for a high solid bench used in dragline operations are 38 meters bench height,65 degrees slope angle and four meter wide remaining coal pillars.
Keywords：high solid bench on which dragline workswedgelimit equilibrium methodFLAC~(3D)safety factor
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 185-189 )