基于变形监测成果的宝塔山滑坡稳定性评价  

Stability evaluation of the Baota Mountain landslide based on deformation monitoring results

作　　者：薛强[1] 张茂省[1] 唐亚明[1] 毕俊擘[1] 

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

出　　处：《水文地质工程地质》2013年第3期110-114,120,共6页Hydrogeology & Engineering Geology

基　　金：中国地质调查局项目"延安市地质灾害监测预警"(1212011140018);"西北黄土高原区地质灾害详细调查"(1212010640330);陕西延安黄土崩滑灾害野外科学观测研究基地资助

摘　　要：宝塔山斜坡坡高壁陡,存在多处崩塌滑坡隐患,开展了有针对性的斜坡变形迹象及诱发因素监测,分别进行了滑坡体深部位移监测、降雨监测、土壤含水率监测和视频监测,建设了监测数据实时自动采集、自动传输、自动入库的宝塔山斜坡自动监测系统。监测结果表明,宝塔山滑坡各监测点位移量接近零,降雨对土壤含水率具有明显影响的深度为0～4.0m。结合视频监测及宏观调查资料,判定宝塔山基底整体稳定,发生整体滑动产生大型滑坡的可能性很小,但在极端气候条件下发生浅层滑坡和中小型崩塌的可能性很大,危及宝塔山安全,需采取有效的崩塌滑坡灾害治理措施。Many hidden safety dangers of collapses and landslides exists in the Baota Mountain due to high and steep slopes,Pointing at this problem,this paper carries out targeted slope deformation signs and predisposing factors monitoring around the mountain.Deep displacement monitoring,rainfall monitoring,soil water content monitoring,and video monitoring on the landslide have been separately carried out and an automatic monitoring system of Baota Mountain slope is built,whose monitoring data include real-time automatic acquisition,automatic transmission and automatic storage.The monitoring results show that the displacement of each monitoring point of the Baota Mountain landslide is close to 0,and the rainfall has a pronounced effect on the soil water content at depth of 0 to 4.0m.Combined with video monitoring and macroscopical survey data,it is found that the foundation of the Baota Mountain is stable integrally,and occurrence of large-scale landslide stem from overall sliding is unlikely.However,the possibility of shallow landslides and small and medium-scale collapse is great under extreme weather conditions,which will endanger the Baota Mountain's safety.Therefore,effective measures are taken to obviate the possibility of collapses and landslides in the Baota Mountain.

关 键 词：宝塔山 滑坡监测 位移 土壤含水率 稳定性 

分 类 号：P642.22[天文地球—工程地质学]