摘要
在设定抽水井及固定抽水设备后,基坑降水对周边一定距离的地下水位降深的具体影响处于探索阶段。成都市犀浦片区地基土呈典型的二元地基形式,以成都地铁某站台站基坑为例,通过抽水试验确定渗透系数及影响半径,并通过非线性拟合确定距抽水井一定距离处水位降深与距离满足ExpDec1模型,有利于类似地质条件下基坑降水对周边水位的影响的研究。
After setting pumping wells and fixed pumping equipment,the specific impact of dewatering of foundation pit on groundwater drawdown at a certain distance around is in the exploration stage.The foundation soil in Xipu District of Chengdu is a typical two-layer structure,taking the foundation pit of a platform station of Chengdu Metro as an example,the author determined the permeability coefficient and influence radius through pumping test,and determined that the water drawdown at a certain distance from the precipitation well meets the ExpDec1 model through non-linear fitting,which provides some reference value for the study of the influence of foundation pit precipitation on the surrounding water level under similar geological conditions.
作者
何海清
李青青
杨进
杨辉
He Haiqing;Li Qingqing;Yang Jin;Yang Hui(Sichuan Institute of Geological Engineering Investigation Group Co.,Ltd.,Chengdu Sichuan 610072,China;Sichuan Xincheng Labor Service Co.,Ltd.,Chengdu Sichuan 610051,China)
出处
《山西建筑》
2023年第17期104-107,148,共5页
Shanxi Architecture
关键词
二元地基
抽水试验
基坑降水
水位降深
非线性拟合
two-layer foundation
pumping test
dewatering of foundation pit
water drawdown
non-linear fitting
