干扰群井基坑降水设计中的水位复核

Water Level Rechecking on Designing of Foundation Pit Dewatering of Disturbed Group Wells

干扰群井基坑降水设计中,对基坑内水位降深的复核是关键的一步,它关系到降水井布置的合理性、影响到降水井的数量及基坑降水的成败,该文针对基坑内地下水位复核公式中相关参数的选取进行了分析,探讨了具体参数取值的合理性问题,认为相关参数的选取应该考虑到抽水井的影响半径,公式中的基坑涌水量应该为抽水井影响半径范围内所有抽水井的出水量,分析了参数的使用条件,并结合实际情况提出了改进建议,新参数的取值方法更符合实际情况。

In the designing of foundation pit dewatering of disturbed group wells, to check the drawdown of water level is a key step whether reach the requirement of design or not, it relates to the rationality of the arrangement and the quantity of dewatering well and affects whether the dewatering of foundation pit will succeed or not. Related parameters in rechecking formula to the dewatering of foundation pit have been discussed, the se- lection of related parameter should consider the radius of influence of pumping well, the yield of foundation pit in formula should be all the yield of pumping wells inside the scope of radius of influence according to the actual engineering problem , the usage condition of parameters has been analyzed, and combined the actual instance , it puts forward the improvement suggestion of the parameters, the new method of parameter selection even is in accord with actual state.