深厚淤泥地质条件下基坑事故前后的关键治理技术  

Key Treatment Technology Before and After Foundation Pit Accident Under Deep Silt Geological Condition

作　　者：杨凌志 YANG Lingzhi(Shanghai Construction No.1(Group)Co.,Ltd.,Shanghai 200120,China)

机构地区：[1]上海建工一建集团有限公司,上海200120

出　　处：《建筑施工》2020年第4期496-499,共4页Building Construction

摘　　要：以深厚淤泥层地质条件下的某事故基坑为背景,介绍了围护体严重侧斜变形等高危情况下的抢险技术。通过采取支撑加固、型钢立柱纠偏、自动化信息监测等方式控制基坑变形的加剧,并在抢险过程中应用回填反压、平衡卸载、抢险监测等关键抢险处置技术,成功完成了抢险。结合原围护状态的拆除、加固、二次施工等关键治理技术,对类似条件下的基坑施工控制要点进行了分析,以期为类似基坑工程的施工提供借鉴。Based on the background of one foundation pit accident in the deep mud layer,this paper introduces the emergency rescue technology in the high-risk situation such as serious lateral deformation of the support.By means of supporting and strengthening,rectifying the deviation of section steel column,automatic information monitoring and other methods to control the aggravation of foundation pit deformation,and in the process of emergency treatment,the key emergency treatment technologies,such as backfill back pressure,balanced unloading,emergency monitoring etc.,have been successfully completed.Combined with the demolition,reinforcement,secondary construction and other key treatment technologies of the original support state,this paper analyzes the key points of foundation pit construction control under similar conditions,which can provide reference for the construction of similar foundation pit projects.

关 键 词：深基坑施工 淤泥质土 基坑事故 应急处理 时空效应 自动化监测 

分 类 号：TU753[建筑科学—建筑技术科学]