赣州市南康区城市垃圾卫生填埋场滑坡特征及应急处置措施分析  

Analysis of landslide characteristics and emergency treatment measures of urban waste sanitary landfill site in Nankang district,Ganzhou city

作　　者：符勋 李海潘 许威 黄国平[1,2] FU Xun;LI Hai-pan;XU Wei;HUANG Guo-ping(Jiangxi Gannan Geological Engineering Institute,Ganzhou 341000,China;Ganzhou Key Laboratory of Geological Disaster Prevention and Control,Ganzhou 341000,China)

机构地区：[1]江西省赣南地质调查大队,江西赣州341000 [2]赣州市地质灾害重点实验室,江西赣州341000

出　　处：《地基处理》2021年第3期246-251,共6页Journal of Ground Improvement

摘　　要：南康区城市垃圾卫生填埋场滑坡是由人工切坡引起降雨诱发的小型岩质滑坡,滑坡周界明显,滑体上裂缝交错,前缘部分滑体向前推移,但大部分滑体仍处于原始斜坡之上,危及垃圾填埋场安全。滑面为顺层(顺坡向)结构面,延伸远,波状起伏,表现出先压扭后张性特征,滑带土为后期充填的泥砂,饱水状态下抗剪强度值迅速降低,是诱发滑坡的主要因素之一。针对滑动面的具体特征,采取削方减载等应急处置措施,为类似特征的地质灾害防治工作提供有效借鉴。The landslide of the urban waste sanitary landfill in Nankang district is a small rock landslide induced by rainfall caused by artificial cut slope.The landslide has obvious perimeter,and cracks on the sliding body are staggered.The front edge part of the sliding body moves forward,but most of the sliding body still rests on the original slope.The safety of the landfill is at risk.The sliding surface is a bedding(downhill)stmctural surface,extending far,undulating,showing the characteristics of compression,torsion first and then tension.The sliding zone soil is filled with mud sand in the later stage,and the shear strength value decreases rapidly in the saturated state.This is one of the main factors of landslides.In view of the specific characteristics of the sliding surface,emergency measures such as cutting squares and reducing loads are adopted to provide a reference for the prevention and control of geological disasters with similar characteristics.

关 键 词：坡特征 顺层结构面 应急处置措施 垃圾填埋场 

分 类 号：X43[环境科学与工程—灾害防治]