深基坑井点降水对周边环境影响分析

Analysis of Influence of Well Point Dewatering on Surrounding Environment in Deep Foundation Excavation

管廊施工过程中为保证施工不受地下水影响,提供干燥的施工环境,以及保证边坡的稳定性,需在基坑开挖之前预先进行井点降水,但井点降水破坏了周边水的平衡,会引起邻近土体、建筑、管线、路面的开裂下沉。因此采取井点降水要慎重分析,并采取相应对策。依托四平市地下综合管廊项目,详细分析井点降水对周边环境的产生危害的原因,并制定相应的预防措施。

In order to ensure that the construction is not affected by groundwater,to provide a dry construction environment and to ensure the stability of the slope,well-point dewatering should be carried out beforehand before the excavation of the foundation pit.However,well-point dewatering destroys the balance of surrounding water and causes cracking and sinking of adjacent soil,buildings,pipelines and pavement.Therefore,the well point precipitation should be carefully analyzed and the corresponding countermeasures should be taken.Relying on the underground comprehensive pipe corridor project of Siping City,the causes of the harm of well point precipitation to the surrounding environment are analyzed in detail,and the corresponding preventive measures are formulated.