深基坑降水设计水文地质参数问题  

Hydrogeological parameter problem on dewatering design of deep foundation pit

作　　者：林胜天[1] 

机构地区：[1]福建省建筑设计研究院,350001

出　　处：《福建建筑》2009年第9期64-66,共3页Fujian Architecture & Construction

摘　　要：本文通过某基坑降水工程非稳定流和稳定流抽水试验成果,分别应用泰斯(C.V.Thies)和裘布依(A.Dupuit)理论公式,求取的水文地质参数与实际深基坑降水施工中存在的问题对比分析。认为单纯采用稳定流己不能满足对地下水控制的需求,主要因为稳定流计算所得的参数,不能用来预测地下水动态变化和降水设计。因此,随着深基坑开挖对地下水的渗流运动研究的提高,推广应用非稳定流抽水试验方法,并与稳定流抽水试验方法结合起来,配合使用求参是当务之急。Based on the unsteady flow and steady flow pumping test data, hydrogeological parameters are derived from C. V. Theis J. Dupuit theoretical formula for some deep foundation pit dewatering projects, in comparision with the actual problems accured in the site, the author come to conclude that the sole steady flow theory is not satisfied with the need of groundwater control, in that parameters derived from the steady flow formula are no longer suitable to predict the groundwater dynamic changes and to guide the dewatering design, With the improvement of groundwater seepage research in more and more deep foundation pit excavating sites, it is so urgent to make more widespread the unsteady flow working in with the steady flow pumping test to acquire the bydrogeological parameters in the geotechnical investigation.

关 键 词：降水设计 抽水试验 稳定流 非稳定流 水文地质参数 

分 类 号：TU463[建筑科学—结构工程]