摘要
基坑水位情况是保障基坑工程安全的重要依据,对基坑水位做出准确合理的预报可以有效减少基坑安全事故的发生。通航建筑物的基坑施工常伴随河流、土壤水、地表水等水资源补给作用,故其所处的水文环境更加复杂多变。本文利用地下水渗流理论,建立某船闸基坑水位数值模型,对基坑降水与降水井失效条件下基坑水位变化进行模拟,分析降水过程中基坑水位变化规律,发现正常情况下其模拟结果与实际基坑水位变化情况基本相符,在降水井失效初期基坑水位逐渐升高,并最终影响施工安全。
The water level of foundation pit is an important basis to ensure the safety of foundation pit engineering.Accurate and reasonable prediction of foundation pit water level can effectively reduce the occurrence of foundation pit safety accidents.The foundation pit construction of navigable buildings is often accompanied by the replenishment of water resources such as rivers,soil water and surface water,so the hydrological environment is more complex and changeable.In this paper,based on the groundwater seepage theory,the numerical model of foundation pit water level of ship lock is established,the change of foundation pit water level is predicted,and the variation law of foundation pit water level during dewatering is analyzed and predicted.It is found that the change of foundation pit water level is small at the initial stage of dewatering,and there is a linear relationship with pumping time after a period of dewatering,and the simulation results are basically consistent with the actual change of foundation pit water level,which has a certain guiding significance for foundation pit dewatering construction.
作者
赵殿鹏
陈妙初
代磊
梁越
邓智中
ZHAO Dianpeng;CHEN Miaochu;DAI Lei;LIANG Yue;DENG Zhizhong(Zhejiang Traffic Engineering Management Center,Hangzhou,Zhejiang Province,311215 China;National Engineering Research Center for Inland Waterway Regulation,Chongqing Jiaotong University,Chongqing,400074 China;Design and Research Institute of CCCC second Navigation Engineering Bureau Co.,Ltd.,Wuhan,Hubei Province,430056 China)
出处
《科技创新导报》
2021年第31期63-67,共5页
Science and Technology Innovation Herald
基金
浙江省交通质监行业科技计划项目(项目编号:ZJ201904)。
关键词
基坑降水
渗流理论
数值模拟
失效
Foundation pit dewatering
Seepage theory
Numerical simulation
Water level prediction
