陕西省南秦岭典型土质滑坡形成机制及风险评价——以商洛市山阳中学滑坡为例  

Risk Assessment and Formation Mechanism for Typical Soil Landslide in South Qinling Mountains of Shaanxi Province—Taking Shanyang School Landslide as an Example

作　　者：高波[1,2] 张茂省[1,2] 贾俊[1,2] 张成航[1,2] 

机构地区：[1]国土资源部黄土地质灾害重点实验室,陕西西安710054 [2]中国地质调查局西安地质调查中心,陕西西安710054

出　　处：《水土保持通报》2016年第6期97-101,109,共6页Bulletin of Soil and Water Conservation

基　　金：中国地质调查局地质调查项目"陕西省重要城镇地质灾害调查"(12120113008900);中国地质调查局地质调查项目"秦岭及宁东矿产资源集中开采区地质环境调查"(12120111000150022)

摘　　要：[目的]对陕西省南秦岭典型土质滑坡形成机制及风险进行研究和评价,为该区地质灾害的防治提供支持。[方法]以陕西省商洛市山阳县山阳中学滑坡为研究对象,通过现场调查、勘察及室内试验开展研究。[结果]山阳中学滑坡现处于基本稳定状态,但不排除遭遇极端气候下复活的可能,滑坡复活概率为7.45%。[结论]区域地壳差异性运动是山阳中学滑坡形成的内动力因素;降雨是该滑坡启动的主要外在诱因;滑坡威胁范围内人员在最大风险中丧命的年概率为:1.70×10-3。[Objective] Studying on the formation mechanism and risk assessment of typical soil landslide in South Qinling Mountains can provide technical support for the prevention of geological disasters in the region.[Methods] The Shanyang School landslide in Shaanxi was selected as an example,the formation conditions and distribution characteristics were analyzed through in situ investigation, survey and laboratory test.[Results] The results show that Shanyang School landslide is in a stable state, the landslide may be revive suffered extreme climates, and resurrection probability is 7.45%.[Conclusion] Regional differences in the crustal movement are the inner dynamic factor of the landslide, and rainfall is the main induced factor of landslide. The maximum personnel risk probability is 1.70×10^-3 in the threats range.

关 键 词：山阳中学 滑坡 形成机制 风险分析 

分 类 号：P642[天文地球—工程地质学]