破碎带条件下深基坑内外水位动态平衡控制技术研究

RESEARCH ON DYNAMIC BALANCE CONTROL TECHNOLOGY OF WATER LEVEL INSIDE AND OUTSIDE DEEP FOUNDATION PIT UNDER THE CONDITION OF BROKEN ZONE

在破碎带条件下深基坑开挖施工,存在基坑周边地下水水位下降以及建筑沉降增大等施工风险。基于此,开展破碎带条件下深基坑内外水位动态平衡控制技术研究,建立深基坑内外水位动态平衡控制系统,结合坑外不间断回灌和坑内抽水施工技术,实现施工过程深基坑内外地下水水位的动态平衡控制,确保施工过程周边建(构)筑物的安全稳定,提高了施工效率,保证了施工质量。

In the excavation of deep foundation pit under the condition of broken zone,there are construction risks such as the decline of groundwater level around the foundation pit and the increase of building settlement.Therefore,this paper carried out the research on the dynamic balance control technology of the internal and external water level of deep foundation pit under the condition of broken zone,established the dynamic balance control system of the internal and external water level of deep foundation pit,and combined the construction technology of uninterrupted reinjection outside the pit and pumping in the pit to realize the dynamic balance control of the internal and external groundwater level of deep foundation pit during the construction process,so as to ensured the safety and stability of surrounding buildings(structures) during the construction process,improved the construction efficiency and ensured the construction quality.