摘要
强降雨作用下,边坡安全性将进一步降低,通过模拟仿真可预测边坡在强降雨条件下的稳定状态。以某水库边坡为例,通过测斜仪对该边坡进行监测,监测结果显示该边坡部分断面产生了滑动位移,并且滑动速度存在明显的差异,而且还跟外界的降雨有很大的关系。为探明在降雨情况下该边坡稳定性变化,采用模拟仿真对边坡在强降雨条件下的稳定情况进行研究。计算结果表明在强降雨条件下,该边坡中上部土体位移量明显较正常工况下发生了很大的变化,其中沿x方向、y方向最大位移量分别为31.1 cm、51.7 cm,与实际观测结果一致,该边坡在强降雨条件下存在滑动的可能。通过模拟仿真可对强降雨条件下的边坡滑动情况进行预测,并根据预测结果采取相应措施,可有效预防滑坡灾害的发生。
Under the action of heavy rainfall,the safety of the slope will be further reduced.Through simulation,the stable state of the slope under the condition of heavy rainfall can be predicted.Taking a reservoir slope as an example,the slope is monitored by inclinometer.The monitoring results show that some sections of the slope have sliding displacement,and there are obvious differences in sliding speed,which is also closely related to external rainfall.In order to find out the change of the slope stability under rainfall,the stability of the slope under heavy rainfall is studied by simulation.The calculation results show that under the condition of heavy rainfall,the displacement of the middle and upper soil of the slope has changed significantly compared with that under normal working conditions,and the maximum displacement along the x direction and y direction are 31.1 cm and 51.7 cm respectively,which is consistent with the actual observation results.The slope may slide under the condition of heavy rainfall.Through simulation,the slope sliding condition under heavy rainfall can be predicted,and corresponding measures can be taken according to the prediction results,which can effectively prevent the occurrence of landslide disaster.
作者
徐康
马才波
XU Kang;MA Caibo(Nanjing Hydraulic Research Institute,Nanjing 210029,China;Inner Mongolia Yinchuo Jiliao Water Supply Co.,Ltd.,Ulanhot 137400,China)
出处
《河南科技》
2022年第17期80-83,共4页
Henan Science and Technology
关键词
滑坡
强降雨
模拟仿真
测斜仪
监测
landslide
heavy rainfall
simulation
inclinometer
monito
