摘要
滑坡体受库水作用其稳定性受到很大影响,如在库水作用下诱发变形,其滑体水下部分多提前于水面以上部分发生变形,对水下滑体变形进行监测,可更早对其稳定性做出判断,为防灾赢得更多时间。滑坡体水下部分变形监测一直是业内难题,常规滑坡监测方法在水下都不适用。在三峡库区秭归县树坪滑坡建立了一套水下变形自动监测系统,采用碳素纤维材料牵引伸缩计与地表倾斜计相结合,对树坪滑坡175m水位下36m深处滑体变形进行监测,经过几年运行试验,证明该方法对监测滑体水下变形可行可靠,具有一定推广价值。
The stability of landslide has been greatly affected by the role of reservoir effect,such as deformation induced by the effect of the reservoir,the slippery body,where the part underwater is more advanced to deform than that above,monitoring the landslide deformation underwater can make judgment of its stability earlier and win more time for disaster prevention. Landslide deformation monitoring underwater has been always a difficult problem in the field, and the methods of conventional landslide monitoring underwater are not applicable. In Shuping landslide,located in zigui county of Three Gorges Reservoir Area,a set of deformation automatic monitoring system underwater had been established,carbon fiber material traction telescopic meter and surface inclinometer were combined to monitor the landslide deformation which was 36 meters deep under the water level of 175 meters in Shuping landslide. After several years of operation test,it proves that the method of monitoring sliding body deformation underwater is feasible and reliable,and has a certain value of popularization.
出处
《中国地质灾害与防治学报》
CSCD
2013年第4期93-96,102,共5页
The Chinese Journal of Geological Hazard and Control
基金
三峡库区专业监测建设和预警分析指导(0001212012AC5110021)
关键词
水库型滑坡
水下
变形监测
wading landslide
underwater
deformation monitoring
