深大基坑冲土泵送开挖的施工组织设计要点  

Key Points of Construction Organization Design for Soil Flushing Pumping Excavation in Deep and Large Foundation Pit

作　　者：危鼎[1] 周建民 周海贵 赵国伟 许国栋 青长江 龚扎力根白音 WEI Ding;ZHOU Jianmin;ZHOU Haigui;ZHAO Guowei;XU Guodong;QING Changjiang;GONGZHALIGEN Baiyin(China Construction Eighth Engineering Bureau Co.,Ltd.,Shanghai 200120,China;Xiaoshan Aobo Investment Co.,Ltd.,Hangzhou,Zhejiang 310000,China)

机构地区：[1]中国建筑第八工程局有限公司,上海200120 [2]萧山奥博投资有限公司,浙江杭州310000

出　　处：《建筑施工》2021年第3期341-343,共3页Building Construction

摘　　要：深大基坑采用冲土泵送方法开挖的施工组织设计与常规使用挖机配合土方车开挖有很大差异,主要表现在总体开挖部署方面,前者是"一点到底,一线到端,以线带面"的"汇流式"整体开挖部署,后者强调的是"分层分块、对称开挖"的布局,并且两者在围护、降水,破桩、清底等工序上的先后顺序、工作量与持续时间都有不同。结合杭州奥体中心工程实例,介绍了深大基坑冲土泵送开挖的整体部署、各工序先后穿插关系、工作面展开速度与人工机械配置等编制施工组织设计时应注意的重点内容。The construction organization design of deep and large foundation pit excavation with soil flushing pumping method is quite different from that of conventional excavation with excavators and earthmoving trucks,which is mainly reflected in the overall excavation deployment.The former is the"confluence"overall excavation deployment of"one point to the end,one line to the end,and lines covering the surface",while the latter emphasizes the layout of"layered,partitioned,and symmetrical excavation",and furthermore,the sequential order,the workload and the duration of working procedures such as the foundation pit support,dewatering,pile breaking and bottom cleaning are quite different.Combined with the engineering example of Hangzhou Olympic Sports Center,this paper introduces the key points that should be paid attention to when compiling the construction organization design,such as the overall arrangement of deep and large foundation pit soil flushing pumping excavation,the interspersed relationship of each process,the spreading speed of working face and the configuration of labor and machinery.

关 键 词：深大基坑 冲土泵送 开挖 施工组织 

分 类 号：TU753.1[建筑科学—建筑技术科学]