摘要
针对基坑边坡在不同类型降雨条件下的渗流特性研究较少这一不足,以江苏某经济开发区某基坑边坡为例,研究了不同类型降雨条件下基坑边坡不同位置的渗流特性进行了数值模拟,得到了不同监测面的孔压与体积含水量变化规律,结果表明:上部监测面孔压变幅较大区域深度大于中部监测面同时大于下部监测面,孔压随着降雨的进行迅速增大,而后逐渐消散;含水率变化规律与孔压类似;不同降雨类型体表层孔压与体积含水率达到最大的速度大小排序分别为前锋型降雨≥平均型降雨≥中锋型降雨≥后锋型降雨,对整体体积含水率变化的影响较小。
In view of the lack of research on seepage characteristics of foundation pit slope under different types of rainfall, a foundation pit slope of a certain economic development zone in Jiangsu Province is taken as an example. The seepage characteristics of the foundation pit slope at different locations under different rainfall conditions are numerically simulated, and the variation rules of pore pressure and volume water content of different monitoring surfaces are obtained. The results show that the area depth of the upper monitoring surface is larger than that of the middle monitoring surface and larger than that of the lower monitoring surface. The pore pressure increases rapidly with the rainfall, and then dissipates gradually. The variation of water content is similar to that of pore pressure. The order of surface pore pressure and volume water content of different rainfall types is avant-garde rainfall ≥ average rainfall ≥ mid-front rainfall ≥ rear-front rainfall, which has little effect on the change of overall volume moisture content.
作者
张仓
ZHANG Cang(Yancheng KinderGarten Teachers College, Yancheng Jiangsu 224000, China;Department of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, China)
出处
《佳木斯大学学报（自然科学版）》
CAS
2019年第5期707-710,共4页
Journal of Jiamusi University：Natural Science Edition
关键词
不同类型降雨
基坑边坡
孔压变化
体积含水量变化
数值模拟
different types of rainfall
foundation pit slope
pore pressure change
volume water content change
numerical simulation
作者简介
张仓(1978-),男,江苏盐城人,工程师,研究方向:市政工程、项目管理。
