山西省阳城县北窑村滑坡特征及成因分析  

Characteristics and cause analysis of landslide in Beiyao village,Yangcheng County,Shanxi Province

作　　者：李骏 李状 苗晋杰 刘宏伟 刘笑 高伊航 LI Jun;LI Zhuang;MIAO Jinjie;LIU Hongwei;LIU Xiao;GAO Yihang(Shanxi Third Geological Engineering Investigation Institute,Jinzhong 030620,Shanxi,China;Tianjin Center,China Geological Survey(North China Center of Geoscience Innovation),Tianjin 300170,China;Tianjin Key Laboratory of Coast Geological Processes and Environmental Safety,Tianjin 300170,China;Xiong'an Urban Geological Research Center,China Geological Survey,Tianjin 300170,China)

机构地区：[1]山西省第三地质工程勘察院有限公司,山西晋中030620 [2]中国地质调查局天津地质调查中心(华北地质科技创新中心),天津300170 [3]天津市海岸带地质过程与环境安全重点实验室,天津300170 [4]中国地质调查局雄安城市地质研究中心,天津300170

出　　处：《华北地质》2025年第1期95-102,共8页North China Geology

基　　金：中国地质调查局项目:“天津市地质安全体检与风险评估示范(DD20243452)”;“太行吕梁山区地质灾害精细调查与风险管控(DD20230438)”;“京津冀协同发展区暨雄安新区资源环境承载能力监测评价(DD20221727)”。

摘　　要：【研究目的】系统剖析北窑村滑坡物质组成及变形破坏特征,并对研究区滑坡稳定性评价,为城镇化建设及发展提供参考,并对区域滑坡灾害防治提供指导。【研究方法】本文以山西省阳城县北窑村滑坡作为研究对象,在野外地质调查、野外钻探的基础上,剖析北窑村滑坡物质组成及变形破坏特征;并根据《滑坡防治工程勘查规范》(GB/T32864—2016)计算在不同工况下该滑坡稳定系数,进行稳定性评价。【研究结果】(1)北窑村滑坡主滑方向约30°,滑坡坡顶高程750 m,坡脚高程629 m,高差约121 m,坡度约30°。滑坡体长约305 m,宽约660 m,滑体厚度约5~10 m,面积约201300 m2,滑坡体体积约161×10^(6)m^(3)。(2)根据滑坡区地质环境条件,计算该滑坡在两种工况条件下的稳定性。在自重工况条件下,该滑坡体处于基本稳定状态:在自重和暴雨工况条件下,该滑坡处于欠稳定状态。(3)通过采集自动化地表位移监测站监测数据,北窑村滑坡剖面的GNSS01和GNSS03监测点所在区域变形趋势很明显,具有周期性特点,经历多次阶坎降低,此外,该地区裂缝同样处于持续的变形阶段。(4)本区具备形成滑坡的地形条件,组成坡体的岩土强度低遇水易软化,结构面与坡向一致,降水入渗,滑体重度增加,抗滑力减小,下滑力增大,破坏了坡体原有的应力平衡,很容易发生滑动。【结论】北窑村滑坡坡体变形明显,其中靠近前缘部分的建房,地基被扰动,多有坍塌。此外,地形是形成滑坡的必要条件,坡体岩性是滑坡形成物质基础,而水对滑坡的形成起着催化作用,是重要的诱发因素。本研究成果可以为区域的城镇化建设及发展提供参考,为区域滑坡灾害防治提供指导。[Objective]To systematically analyze the material composition and deformation and failure characteristics of Baiyao landslide,the stability of landslide in the studied area is evaluate,reference is provided for urbanization construction and development,and guidance for regional landslide disaster prevention and control is provide.[Methods]Based on the field geological survey and field drilling,the material composition,deformation and failure characteristics of the landslide in Beiyao village,Yangcheng County,Shanxi Province,are analyzed in this paper.The stability coefficient of the landslide under different working conditions is calculated according to GB/T32864—2016,and the stability evaluation is carried out.[Results](1)The main sliding direction of the landslide in Beiyao village is about 30°,the top elevation of the landslide slope is 750 m,the foot elevation is 629 m,the height difference is about 121 m,and the slope is about 30°.The landslide body length is about 305 m,the width is about 660 m,the thickness of the landslide body is about 5—10 m,the area is about 201300 m2,and the volume of the landslide body is about 1.61×10^(6)m^(3).(2)According to the geological environment conditions of the landslide area,the stability of the landslide under two working conditions is calculated.Under the conditions of dead weight,the landslide is in a basically stable state;under the conditions of dead weight and heavy rain,the landslide is in an understable state.(3)By collecting the monitoring data of the automated surface displacement monitoring station,the deformation trend of the area where the GNSS01 and GNSS03 monitoring points are located in the landslide profile of Beiyaocun is obvious,with periodic characteristics and experiencing multiple step reduction.In addition,the fractures in this area are also in a continuous deformation stage.(4)This area has the topographic conditions for the formation of landslides.The rock and soil composed of slopes have low strength and are easy to soften when exposed to w

关 键 词：滑坡 发育特征 稳定性评价 成因分析 阳城县北窑村 山西省 

分 类 号：P642.22[天文地球—工程地质学]