深基坑微承压水地层基坑降排水施工技术研究

Research on the Construction Technology of Foundation Pit Drainage in Deep Foundation Pit Micro-Confined Water Stratu

对微承压水地层的特点进行了分析,确定了降排水施工的目标和要求,设计了微承压水地层的降排水方案,包括井点设置、井设施建设和排水系统设计等方面,并通过模型试验台模拟不同井点设置下的地层压力和降水效果。结果表明,通过合理的井点布置和适宜的排水系统设计,可以有效降低地层水压,保证基坑的稳定施工。

Based on the analysis of the characteristics of the micro-confined water formation,the objectives and requirements of the drainage construction are determined.Based on this,the drainage scheme of the micro-confined water formation is designed,including well point setting,well facility construction and drainage system design,etc.,and the formation pressure and precipitation effect under different well point setting are simulated by a model test bench.The results show that the formation water pressure can be reduced effectively and the stable construction of foundation pit can be ensured by reasonable well point layout and proper drainage system design.