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以杭州地铁秋涛路站深基坑施工为例,对如何保证降水效果和基坑安全,以及如何降低深基坑施工对周围环境影响方面进行了探索,对基坑降水所引起的基坑周围地表发生沉降的原因进行了分析,并通过坑内外水位变化及地表沉降监测情况分析,得出围护结构止水效果与坑外地表沉降关系,以及在降水过程中因围护结构漏水而产生的坑外地表沉降范围和沉降量变化的发展情况,进而提出如何防止降水不利影响的措施。
Taking the deep foundation pit construction of Hangzhou Qitao Road Station as an example, this paper explores how to ensure the effect of precipitation and the safety of foundation pit and how to reduce the impact of deep foundation pit construction on the surrounding environment. The causes of surface subsidence were analyzed. Through the analysis of pit and water level changes and surface subsidence monitoring, the relationship between sealing effect of retaining wall and surface settlement of pits and the water leakage of the retaining structure during precipitation were obtained The development of the settlement range and settlement of the pit surface, and then put forward measures to prevent the adverse effects of precipitation.