真空-覆水联合预压法在某污水处理厂深层地基处理中的应用  

Application of Vacuum-covering Combined Prepressing Method in Deep Foundation Treatment of a Sewage Treatment Plant

作　　者：和礼红 汪小南 刘堰陵 HE Lihong;WANG Xiaonan;LIU Yanling(Wuhan Municipal Engineering Design and Research Institute Co.Ltd.,Wuhan 430023)

机构地区：[1]武汉市政工程设计研究院有限责任公司,武汉430023

出　　处：《土工基础》2025年第1期48-52,共5页Soil Engineering and Foundation

摘　　要：真空预压法是一种环保、低碳的地基处理技术,其通过真空负压使土体中的重力水由排水系统排出,进而使得土体固结并压缩沉降。为了加快施工进度,往往采用覆水加载与真空加载联合预压,即为真空-覆水联合预压法。以武汉市某污水处理厂深层地基处理为例,介绍了真空-覆水联合预压法在深层地基处理中的工程概况、工程地质条件以及分区设计、排水系统设计、施工工艺设计、监测,提出了控制标准等关键技术和施工工艺设计。The vacuum surcharge method is an economical,environmentally friendly,low carbon emission soil improvement method.This method is carried out through the vacuum pump out the air in the soil,the negative pressure formed in the vacu-umed soil can suck the gravity water out through prefabricated plastic drains,sand drains and other vertical drainage system,as well as sand cushions and other horizontal drainage system.Therefore,the soft soil will be consolidated,and compression set-tlement will occur.In order to accelerate the construction progress,the combined prepressing of covering loading and vacuum loading is often used,namely the vacuum-covering combined surcharge method.The case history of the deep soil improvement in a wastewater treatment plant in Wuhan is presented in this paper.The vacuum-covering joint surcharging method in a deep soil improvement is introduced.The engineering and geological conditions,the design aspects of soil improvement partition,drainage system and construction process,as well as the construction monitoring,are also presented in the paper.

关 键 词：真空预压法 真空-覆水联合预压法 地基处理 

分 类 号：TU472[建筑科学—结构工程]