摘要
基坑降水在周围形成降落漏斗,超过一定距离时水位下降值极小(趋近于零),即影响半径。影响半径确定方法多基于稳定流基础上,实际工程中的非稳定流往往需要对计算结果进行调整,具有不确定性。本文在理论分析基础上,探讨如何结合补给源边界、经验值等方法综合确定影响半径值,并举案例进行分析,对基坑降水计算分析具有一定的实用价值。
The foundation pit dewatering forms depression cone around, groundwater fell level become minimum where more than a certain distance （close to zero）, which is influence radius. The determination method of influence radius is mostly based on the steady flow; how- ever the adjustment of the calculation results should be made for unsteady flow in the practical engineering, which is uncertain. In this pa- per, on the basis of theoretical analysis, the author discusses combines recharge boundary value method and experience to determine the in- fluence radius. And a case analysis was provided, has certain practical value on the foundation pit dewatering calculation.
出处
《福建建设科技》
2016年第6期8-9,共2页
Fujian Construction Science & Technology
关键词
基坑
降水
稳定流
影响半径
foundation pit
dewatering
steady flow
influence radius
