新建盐卡泵站深基坑深井降水施工技术研究

Study on Dewatering Construction Technology of Deep Foundation Pit and Deep Well in Newly-built Yanka Pumping Station

湖北省荆州市新建盐卡泵站工程施工,采用深井降水施工工艺进行基坑降水,在实际施工中降水效果直接影响基坑开挖进度和基坑施工安全。为了保证降水高度能够满足基坑开挖深度要求,通过深井降水开挖前期运行监测,分析渗水量、深井泵功率、运行工况、降水效果等是否满足基坑开挖时最低水位要求,制定相关施工技术措施,提高降水效果,保证基坑开挖安全,防止基坑突涌发生。

Deep well dewatering construction technology is used for foundation pit dewatering during the construction of the newly-built Yanka Pumping Station Project in Jingzhou,Hubei Province.The dewatering effect directly affects the excavation progress and the engineering safety of foundation pit in actual construction.Whether water percolating capacity,deep well pump power,operation working condition,dewatering effect,etc.meet the minimum water level requirements during foundation pit excavation or not is analyzed in order to ensure that the dewatering height can meet the requirement of foundation pit excavation depth through the early operation monitoring of the deep well dewatering excavation.Relevant construction technique measures are formulated,the dewatering effect is improved,the safety of foundation pit excavation is guaranteed,and the water-inrush of the foundation pit is prevented.