Optimization on stability control scheme for north slope of Xianfeng Open-pit Mine
WANG Dan
WU Chen
LYU Boning
JIANG Xianglian
LIN Lingxin
Abstract：In order to study the deformation and instability of open-pit mine slopes,taking the north slope of Xianfeng Open-pit Mine as the engineering background,Midas GTS NX and GeoStudio Slope numerical simulation software are used.Based on the strength reduction theory and Mohr Coulomb strength criterion,the failure mode and development trend of slopes are studied.Two slope stability control schemes,"slope reduction load"and"slope reduction load+foot pressure",are proposed,and the safety factors of slopes under the two schemes are compared and analyzed,The results show that the deformation and failure mode of Xianfeng north slope is"bedding shear"failure;the use of the"slope cutting and load reduction"scheme alone has limitations in controlling slope stability.The"slope cutting and load reduction+foot pressing"scheme should be adopted.
Keywords：slope stabilityslope cutting and load reductionpressing feetbedding shearnumerical simulation
Publication Date：2025-02-27
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 88-91 )