Study on deformation and prevention of north slope in Xiaolongtan Open-pit Mine stope
SHAO Xingneng
SU Zhiqiang
ZHU Hong
WANG Hongjin
WANG Hongjian
Abstract：In order to elucidate the deformation and failure mechanism of the north slope in Xiaolongtan Open-pit Mine and the influencing factors,this article conducts stability analysis and prevention measures research on three typical profiles through on-site engineering geological investigation.The research results indicate that the north slope is in the early stage of weak deformation of the landslide and belongs to a potential large-scale translational landslide.The stability coefficient of the profile ranges from 1.041～1.085,and the overall state is under stable to basically stable.Further research has found that the stability of slopes is influenced by multiple factors such as topography,soil properties,and geological structures.Among them,surface water infiltration and groundwater seepage are the key factors that induce slope deformation.A treatment plan is proposed for blind ditch+precipitation,pressure reducing funnel measures(dewatering wells),slope cutting and load reduction of 2.1 million m3,and supporting"soil ditch+anti-seepage membrane"waterproof and drainage system.After calculation and verification,the minimum stability coefficient of the slope is increased to 1.159 under natural conditions and remain at 1.059 under earthquake conditions.
Keywords：deformation characteristicdeformation mechanismslope stabilityslope preventionanti-seepage measure
Publication Date：2025-10-15
Online Publishing Date：2025-12-12(First online date of this platform, not the publication date of the document)
Pages：6( 66-71 )