陕西榆神府生态环境脆弱区地质灾害分布规律  

Distribution of geological hazards in Yushenfu ecological environment fragile area

作　　者：李永红 刘海南 范立民 贺卫中 姬怡微 赵洲[2] LI Yonghong LIU Hainan FAN Limin HE Weizhong JI Yiwei ZHAO Zhou(Shaanxi Institute of Geo-Environment Monitoring, Xi＇an, Shaanxi 710054, China College of Geology and Environment, Xian University of Science and Technology, Xi＇an, Shaanxi 710054, China)

机构地区：[1]陕西省地质环境监测总站,陕西西安710054 [2]西安科技大学地质与环境学院,陕西西安710054

出　　处：《中国地质灾害与防治学报》2016年第3期116-121,共6页The Chinese Journal of Geological Hazard and Control

基　　金：国家重点基础研究发展(973)计划(2013CB227901);陕西省财政专项地质灾害防治经费项目(陕地调院发[2014]33号)

摘　　要：榆神府地区生态环境脆弱,地质灾害点多面广。基于地质灾害详细调查成果得出:地质灾害类型为滑坡、崩塌、泥石流、采空地面塌陷;规模以小型、稳定性以差或较差、险情等级以小型为主;崩塌、滑坡发育的边界条件相同,主要发育于60°以上人工土岩边坡上,崩塌以剥落式为主,滑坡以前缘临空失稳牵引为主;地面塌陷主要由煤矿采空引发,表现为地表裂缝、地面塌陷,伴生崩塌、滑坡,裂缝以直线型、弧线型为主;窟野河中游、秃尾河东岸与孤山川、木瓜川等流域黄土沟壑内的地质灾害密集;神木县的永兴办与府谷县的府谷镇灾害点最多;50%以上地质灾害由人为工程活动引发,因此规范人为工程活动,是防范榆神府地质灾害发生的有力保障。The ecological environment of Yushenfu area is fragile, geological hazards development and distribute in a wide range. Based on detailed survey of geological hazards,the author induction,summary,analysis and comprehensive study,think： The slope of geological hazards is including landslide,collapse,debris flow and ground collapse,the hazard is mainly small scale,poor stability and small danger level.Development of collapse and landslide ＇s boundary conditions are basically the same,mainly developed on artificial soil and rock slope which is more than 60 °. Collapse is mainly flake-style and landslide leading edge free traction. Ground collapse is mainly caused by mineral resources exploit,formed mainly for surface cracks,collapses,landslides and ground collapse,cracks is mainly straight line and arc type. Geological hazards of loess hilly landforms are intensive development in middle reaches of Kuye River,east coast of Tuwei River,Gushan and Mugua Mountains. Geological hazard of Yongxing town in Shenmu County and Fugu town in Fugu County is most development. the survey found that 563 points of geological hazard more than 50% is closely related to human activities. Therefore,specification for human engineering activities is powerful guarantees for preventing geological hazards occurring in the study area.

关 键 词：榆神府 生态环境脆弱性 地质灾害 发育特征 分布规律 

分 类 号：P642[天文地球—工程地质学]