摘要
堆积体滑坡由于物质组成的复杂性,勘察时难以准确判断其范围、规模。某深层中型堆积体滑坡勘察过程中,在地质调查、钻探等常规勘察手段的基础上,引入地表监测、深部位移监测、地下水位监测等多种监测技术辅助勘察工作。通过地表调查和位移监测初步判断滑坡的边界范围,深部位移监测可准确定位滑动面,地下水位监测成果可精准计算滑坡推力,并评判排水措施布置的合理性。基于传递系数法对滑坡进行稳定性分析,在连续降雨工况下坡体处于不稳定—欠稳定状态,连续降雨会诱发坡体产生更大规模、更深层次的整体滑动。依托监测技术,可以辅助查明堆积体滑坡的变形破坏机制和稳定性,并合理预测其发展趋势,指导全过程设计、施工。
Because of the complexity of material composition,it is difficult to accurately judge the scope and scale of accumulative landslide.During the investigation of a deep medium-sized accumulative landslide,on the basis of geological investigation,drilling and other conventional investigation methods,surface monitoring,deep displacement monitoring,groundwater level monitoring and other monitoring technologies are introduced to assist the investigation.The boundary range of the landslide can be preliminarily determined by surface investigation and displacement monitoring,the sliding surface can be accurately located by deep displacement monitoring,and the landslide thrust can be accurately calculated by groundwater level monitoring results,and the rationality of drainage arrangements can be judged.Based on the transfer coefficient method,the stability analysis of landslide shows that the slope is in an unstable-understable state under the continuous rainfall condition,and the continuous rainfall will induce the slope to produce a larger scale and deeper level of overall sliding.Relying on the monitoring technology,it can assist in identifying the deformation and damage mechanism and stability of the accumulative landslide,and reasonably predict its development trend to guide the whole process of design and construction.
作者
葛延明
林大江
赵玉宝
GE Yanming;LIN Dajiang;ZHAO Yubao(Hunan Provincial Communications Planning,Survey&Design Institute Co.,Ltd.,Changsha 410200,Hunan,China;Hunan Provincial Key Laboratory of Highway Construction&Maintenance Technology in Southern China,Changsha 410200,Hunan,China)
出处
《资源信息与工程》
2025年第2期52-57,共6页
Resource Information and Engineering
基金
湖南省交通规划勘察设计院有限公司科技项目(20200139)。
关键词
堆积体滑坡
滑坡稳定性
地表位移
深部位移监测
accumulative landslide
landslide stability
surface displacement
deep displacement monitoring
