高落差大型基坑降水施工技术及应用  

Precipitation Construction Technology and Application of High Fall and Large Foundation Pit

作　　者：王晓峰 王志强 赵源 WANG Xiaofeng;WANG Zhiqiang;ZHAO Yuan(China Railway No.3 Construction and Installation Engineering Co., Ltd., Taiyuan, Shanxi 030006, China)

机构地区：[1]中铁三局集团建筑安装工程有限公司,山西太原030006

出　　处：《建筑施工》2018年第11期1880-1882,1935,共4页Building Construction

摘　　要：针对工程基坑面积大、高落差、地下水位高、场地地形复杂及离高铁专线近等实际情况,研究采用了"三轴水泥搅拌止水帷幕桩+钢筋混凝土支护桩+阶梯形管井降水"的基坑封闭降水施工技术。经应用,该技术解决了高落差大型基坑降水施工难题,保证了工程基坑开挖及基础施工任务按期顺利完成,并取得了良好的社会效益、环保效益和经济效益。As to the actual issues of a foundation pit,such as large construction pit area,high fall,high groundwater level,complex terrain and being close to high speed railway,the closed precipitation construction of foundation pit is studied and used,which includes the three-axis cement mixing water-retaining curtain pile,the reinforced concrete supporting pile and the stetted tube well precipitation.The technology ensures the excavation of the foundation pit.The foundation construction task has been successfully completed on schedule,and achieved good social benefits,environmental benefits and economic benefits.

关 键 词：高落差基坑 封闭降水施工 三轴水泥搅拌止水帷幕桩 阶梯形管井降水 

分 类 号：TU753.66[建筑科学—建筑技术科学]