软弱地层气压劈裂真空预压加固施工技术  

Construction Technology of Pneumatic Fracturing Vacuum Preloading Reinforcement in Weak Strata

作　　者：祝建成 徐浩 段立超 ZHU Jiancheng;XU Hao;DUAN Lichao(Beijing Infrastructure Investment Co.,Ltd.,Beijing 100101,China;China Railway Hi-Tech Industry Co.,Ltd.,Beijing 100070,China;China Railway No.2 Engineering Group Co.,Ltd.,Chengdu 610032,China)

机构地区：[1]北京市基础设施投资有限公司,北京100101 [2]中铁高新工业股份有限公司,北京100070 [3]中铁二局集团有限公司,成都610032

出　　处：《路基工程》2023年第3期171-173,共3页Subgrade Engineering

摘　　要：气压劈裂真空预压通过向土体注入高压气体形成裂缝,同时利用真空负压使土体固结。气压劈裂、真空预压均需要密闭环境,密闭环境及材料的质量控制直接影响土体固结的成果。阐述气压劈裂真空预压法在实际施工应用中的施工工艺及质量控制、真空预压控制措施,为新型的软基处理推广应用提供成熟的施工工艺和操作方法。High pressure gas is injected into the soil to form cracks by pneumatic fracturing vacuum preloading,and vacuum negative pressure is used to consolidate the soil.Pneumatic fracturing and vacuum preloading require a closed environment,and the closed environment and material quality control directly affect the result of soil consolidation.It describes the construction technology,quality control and control measures of vacuum preloading in the practical construction application of pneumatic fracturing vacuum preloading method,which provides mature construction technology and operation method for the popularization and application of new soft foundation treatment.

关 键 词：软弱地基 气压劈裂 真空预压 密闭环境 质量控制 

分 类 号：TU471.8[建筑科学—结构工程]