归州河西沿江高切坡变形破坏及稳定性分析  

Analysis on Deformation and Stability of High Cutting Slope on West Side of Guizhou River

作　　者：刘广宁[1] 齐信[1] 黄波林[1] 王世昌[1] 

机构地区：[1]中国地质调查局武汉地质调查中心,湖北武汉430205

出　　处：《防灾科技学院学报》2016年第3期18-23,共6页Journal of Institute of Disaster Prevention

基　　金：国家自然科学基金(41372321);中国地质调查局灾害预警项目(12120114079301);水工环调查项目(DD20160257)

摘　　要：为了掌握归州河以西沿江公路由于升级改造、工程开挖而产生的大量公路高切坡发育分布特征,总结其变形破坏模式,进而对其稳定性进行分析。在野外实地宏观调查、测量的基础上,通过数据处理,运用赤平投影法对调查区高切坡稳定性进行区划,其中不稳定切坡长约3.8km,占比39.6%,多发育在侏罗系遂宁组(J3s)和聂家山组(J1n)中,主要变形破坏模式为滑移型、倾倒型和剥落型,并根据其破坏模式的差异性提出相应防治对策。In order to master the development distribution characteristics of high cutting slopes along the riverside highway after its upgrading and excavation, we summarize its deformation failure mode, and analyze its stability. On the basis of field survey and measurement, through data processing, we use stereographic projection method for slope stability zoning area survey. The unstable cutting slope is about 3. 8 km long, accounted for 39. 6%, mainly developed in Jurassic （ J3 s） and （ J1 n） . Slip, dumping and spalling are the main modes of deformation and failure, corresponding countermeasures are put forward, according to the failure mode differences.

关 键 词：高切坡 破坏模式 赤平投影 稳定性 防治对策 

分 类 号：P642.22[天文地球—工程地质学]