Influence of Dewatering Excavation of Deep Foundation Excavation in Water-rich Sand Layer on Adjacent Comprehensive Pipe Gallery
Based on a deep foundation excavation project near the comprehensive pipe gallery,according to the foundation excavation dewatering excavation scheme and on-site monitoring data,Midas GTS NX software was used for simulation analysis to study the influence of deep foundation excavation in water-rich sand layer on the surrounding surface and existing pipe gallery,and the groundwater level corresponding to the pipe gallery when it reaches the settlement warning value was predicted.The research results show that the settlement of the surrounding surface and pipe gallery is mainly caused by precipitation,and the existing pipe gallery restricts the movement of the surrounding soil,effectively reduces the surface settlement.Step by step dewatering excavation can effectively control the settlement of the surrounding surface and the existing pipe gallery.In practical engineering,the monitoring of groundwater level should be strengthened to control the groundwater level to meet the requirements of early warning value.
NETL
NSTL
万方数据
