LIU Guang-ning,CHEN Li-de,FU Yong-peng,et al.Influence of Rainfall and Reservoir Water Level Fluctuation on Landslide[J].Research of Soil and Water Conservation,2011,18(06):200-203.
降雨和库水位升降对滑坡的影响
- Title:
- Influence of Rainfall and Reservoir Water Level Fluctuation on Landslide
- Keywords:
- rainfall; reservior water level fluctuation; monitoring; landslide
- 分类号:
- P642.22;P426.615
- 摘要:
- 滑坡是三峡库区重要地质灾害之一，影响滑坡稳定性的因素有很多。针对降雨和库水位升降以水泥厂滑坡为例，运用自动化远程监测其变形和该区域降雨量，通过数据整理、分析，掌握降雨和库水位升降对滑坡变形的影响状况。结果表明：在监测期间，个别时间段滑坡变形加剧是降雨和库水位升降共同作用的结果，个别时间段降雨、库水位升降分别为滑坡变形加剧的主导因素，降雨对滑坡变形的影响表现出一定的滞后效应，滞后期一般为7～15 d。监测表明，目前滑坡仍处于变形阶段，且向SE方向旋转滑移，但趋势有所减缓。通过对该滑坡的变形监测，可以定量分析和描述滑坡的运动状态，对三峡库区其它类似滑坡的研究具有重要的指导意义。
- Abstract:
- Landslide is one of important geohazards in Three Gorges Reservoir, which was affected by many factors. Taking Shuinichang landslide for example, the authors adopted automated remote monitoring system to monitor rainfall and water level fluctuation, analyze the relationship between rainfall & water level fluctuation and landslide deformation. It shows that some serious deformation period is resulted from rainfall & water level fluctuation. Rainfall & water level fluctuations are the main factors affecting landslide stability. The influence of rainfall on landslide deformation presents some hysteresis effect, and the hysteresis period lasts 7～15 days. Monitored data also shows that this landslide is still in the deformed period, which is rotated to SE direction, but its trend slows slowness down. This monitoring system in the landslide can describe the movement of landslide quantitatively, which shows important guide signification on other similar landslides in Three Gorges Reservoir.
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备注/Memo
收稿日期:2011-4-27;改回日期:2011-6-8。
基金项目:中国地质调查局灾害预警项目(1212011014027)
作者简介:刘广宁(1980- )，男，河北省大城县人，工程师，硕士，主要从事环境地质灾害研究。E-mail：guangning1123@163.com