流态固化土填充溶洞施工技术研究  

作　　者：林俊臣 赵亮 杨永光 

机构地区：[1]中国华西企业有限公司,广东深圳518048 [2]中国华西企业股份有限公司,成都610036

出　　处：《科技创新与应用》2024年第35期175-178,共4页Technology Innovation and Application

摘　　要：由溶洞与土洞共同组成的岩溶地基,经常会造成地基塌陷与不均匀沉降以及承载力不足等一系列变形破坏问题,如果不对其进行及时、有效的处理,会对建筑物的安全性造成严重影响,导致坍塌事故的发生。传统溶洞预处理主要采用灌注低标号混凝土、泡沫混凝土等以砂石料为原材料、水泥为胶凝材料的填充料对地下溶洞进行充填加固处理。流态固化土回填技术有效解决了传统溶洞处理成本较高、不利于可持续发展的问题,回填土料原地或就近取材,可选取基坑开挖土方、旋挖灌注桩弃土、灌注桩泥浆等作为土料原料,具有显著的经济效益及环境效益。The karst foundation composed of karst caves and soil caves often causes a series of deformation and damage problems such as foundation collapse,uneven settlement,and insufficient bearing capacity.If it is not treated in a timely and effective manner,it will affect the safety of buildings.Serious impact,leading to collapse accidents.Traditional pretreatment of karst caves mainly uses filling and reinforcing underground karst caves with low-grade concrete,foam concrete and other fillers using sand and gravel as raw materials and cement as cementitious materials.Liquid-state solidified soil backfilling technology effectively solves the problems of high treatment costs of traditional cave caves and is not conducive to sustainable development.Backfill materials are collected in situ.Foundation pit excavation earth,rotary excavation grouting pile waste soil,or grouting pile slurry can be chosen as soil raw materials.

关 键 词：岩溶地基 地基处理 流态固化土 可持续发展 回填技术 

分 类 号：TU475[建筑科学—结构工程]