某深基坑工程支护设计及地下水控制研究

Research on Support Design and Groundwater Control of Deep Foundation Pit Engineering

在地质条件复杂及地下水位较高的深基坑工程中,选取合理的基坑支护设计方案和地下水控制措施,有利于基坑的稳定;借助深基坑设计软件对双排桩和预应力锚索组合式支护进行支护设计计算,采用高压旋喷桩止水帷幕和管井井点降水措施对地下水进行控制,设计计算表明:该支护设计方案满足设计规范要求,地下水控制措施较为合理。

In the deep foundation pit engineering with complex geological conditions and high groundwater level,the rational design of foundation pit support and the control measures of groundwater are beneficial to the stability of the foundation pit.This paper carries out calculation of support design of the combined support of double row pile and prestressed anchor cable with the help of deep foundation pit design software,and controls the groundwater by using the water stop curtain of high pressure jet grouting pile and the well-points dewatering of tubular well.The design calculation shows that the design scheme meets the requirements of the design specification,and the groundwater control measures are much reasonable.