城市地质2026，Vol.21Issue(3)：355-362,8.DOI:10.3969/j.issn.2097-3764.2026.03.009
富水软岩边坡稳定性分析及灾害治理措施研究
Stability analysis and disaster control measures of water-rich soft rock slope
摘要
Abstract
Taking the slope of a 500 kV substation site in Nandan County,Guangxi as the research object,the engineering geological conditions,instability mode and control measures of the slope located in the near core area of Dachang anticline were studied by means of engineering geological investigation,exploration analysis and stability checking.The results show that the study area is controlled by anticline structure and fracture,forming geological conditions conducive to the occurrence and migration of groundwater.The lithology of the slope is mainly mudstone and carbonaceous argillaceous limestone,and the softening effect of water is significant,which is an important internal factor of slope instability.The excavation slope mainly occurs shallow slump and bedding sliding along the contact zone between mudstone and carbonaceous argillaceous limestone.The filling slope is manifested as the internal shear failure of the filling body and the overall sliding along the filling-natural slope contact surface.After adopting bolt support(80~100 kN),the safety factor of excavation slope is increased to 1.38~1.56.After the geogrid with a length of 40 m and a design tension of 75 kN·m-1 is used for reinforcement,the safety factor of the fill slope is increased to 1.46,which meets the requirements of the specification.Based on the results of engineering geological survey and stability analysis,the collaborative treatment measures of"active reinforcement-drainage load reduction-ecological protection"are put forward.关键词
富水软岩/地下水补给/稳定性分析/变形破坏/灾害治理Key words
water-rich soft rock/ground water recharge/stability analysis/deformation and failure/disaster mitigation引用本文复制引用
蔡长发,李爱华,杨升乾..富水软岩边坡稳定性分析及灾害治理措施研究[J].城市地质,2026,21(3):355-362,8.基金项目
国家自然科学基金(42276213)项目资助 （42276213）
