对爆炸法处理软土地基技术中炸药作用的几点认识  

Some Understandings on the Role of Explosives in the Treatment of Soft Soil Foundation by Explosion Method

作　　者：李永和 韦昌富[2,3] 陈盼[2,3] 王吉利[2,3] 陈林 于桓飞 LI Yonghe;WEI Changfu;CHEN Pan;WANG Jili;CHEN Lin;YU Huanfei(Zhejiang Institute of Hydraulics&Estuary(Zhejiang Institute of Marine Planning and Design),Hangzhou 310020,Zhejiang,China;State Key Laboratory of Geomechanics and Geotechnical Engineering,Wuhan 430071,Hu Bei,China;Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,Hu Bei,China;Zhejiang Guangchuan Engineering Consultation Co.,Ltd.,Hangzhou 310020,Zhejiang,China)

机构地区：[1]浙江省水利河口研究院(浙江省海洋规划设计研究院),浙江杭州310020 [2]岩土力学与工程国家重点实验室,湖北武汉430071 [3]中国科学院武汉岩土力学研究所,湖北武汉430071 [4]浙江广川工程咨询有限公司,浙江杭州310020

出　　处：《浙江水利科技》2021年第2期38-42,46,共6页Zhejiang Hydrotechnics

基　　金：浙江省重大科技专项(No.2009C13010)。

摘　　要：采用爆炸挤淤置换法处理浅层软土基础,其应用已比较广泛,技术也较为成熟,但用爆炸挤淤置换法处理深层软土地基,特别是在深厚淤泥层上悬浮式海堤结构中的应用却不多见,大规模应用的实例则更少。依托在超过40 m的深厚淤泥层中建造悬浮式海堤(长度超过5000 m)结构的实例,根据现场实测数据,对海堤抛石量和炸药量的关系、爆炸对海堤沉降的影响范围和影响程度等进行数理统计分析。分析结果表明,炸药是海堤沉降的触发因素,抛石体荷载是海堤沉降的主要因素。The explosive compaction replacement method has been widely used in the treatment of shallow soft soil foundation for its mature technology.However,it is rare to use the method to treat deep soft soil foundation,especially in the suspended seawall structure in deep and thick silt,even less in the large scale application.According to measured data of a suspended seawall structure(over 5000 m in length)in over 40 m deep silt,the relationship between the amount of riprap and the amount of explosive,the influence range and degree of the explosion on the settlement of the seawall are analyzed by mathematical statistics.The results show that explosive is the trigger for seawall settlement and riprap load is the main factor.

关 键 词：爆炸挤淤 抛石体 海堤沉降 软基处理 

分 类 号：U656.31[交通运输工程—港口、海岸及近海工程]