新建睢宁二站泵站深基坑施工方案优化  

Construction Scheme Optimization of Deep Foundation Pit for Suining No.2 Pump Station

作　　者：刘泽俊[1,2] 张占[3] 李延安[2] 丁玥 张志好[2] 陈龙[2] 高以宁 

机构地区：[1]淮阴工学院建筑工程学院,江苏淮安223001 [2]江苏淮阴水利建设有限公司,江苏淮安223005 [3]江苏省骆运水利工程管理处,江苏宿迁223800 [4]徐州市水利工程建设监理中心,江苏徐州221000

出　　处：《水电能源科学》2011年第10期63-66,214,共5页Water Resources and Power

摘　　要：针对睢宁二站泵站深基坑场地内分布有软土、膨胀土、液化土层、承压水等工程地质条件较差问题,提出了调整管井间距及管径管材,并进行了调整管井数量后的基坑降水量计算,确认了围堰的布置及结构型式并对围堰断面的稳定性进行了复核,探讨了多种边坡开挖方案下的边坡稳定性,给出了最优的边坡开挖方案。据此优化方案,在施工过程中及工程运行后,至今未发现异常。Aiming at the specific engineering geology conditions of Suining No. 2 pump station, this paper presents some effective design improvements. There are soft soil, expansive soil, liquefaction soil layer and confined water in deep foundation pit. We propose to adjust the tube well spacing, pipe diameter and pipe material. And then the rainfall in foundation pit with modified tube-well number is calculated. At the same time, the structure and arrangement of the cofferdam is determined and the stability of cofferdam sections is checked. Finally, it discusses slope stability under several slope excavation schemes and the optimal slope excavation scheme is given. Therefore, no anomalies are found up to now.

关 键 词：泵站 深基坑 施工方案 优化 安全系数 瑞典条分法 

分 类 号：TV551.4[水利工程—水利水电工程]