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基坑降水过程中由于多采用经验渗透系数,降水井布置不合理,直接影响基础及上部结构的施工。本文以太原市某电厂基坑降水为实例,通过抽水试验确定渗透系数,采用大口井方法确定基坑涌水量和基坑影响半径,制定合理的基坑降水及基坑支护和回灌技术方案,并推广该技术方案在在电力行业中的应用。
During the process of foundation pit dewatering, the empirical permeability coefficient is mostly used and the layout of the dewatering wells is unreasonable, which directly affects the construction of foundation and superstructure. In this paper, a Taiyuan power plant foundation pit precipitation as an example, through the pumping test to determine the permeability coefficient, the use of a large well method to determine the foundation pit water inflow and pit radius of influence, to develop a reasonable foundation pit dewatering and pit support and irrigation technology program , And promote the application of the technical solution in the power industry.