超深土工膜复合防渗墙施工技术概述及应用  

Overview and Application of Construction Technology of Ultra-deep Geo-membrane Composite Impermeable Wall

作　　者：丁玲 DING Ling

机构地区：[1]上海远方基础工程有限公司,上海市200436

出　　处：《城市道桥与防洪》2023年第2期165-168,共4页Urban Roads Bridges & Flood Control

摘　　要：土工膜复合防渗墙施工技术是一种防渗性能高、环保的施工工艺。其关键技术包括成槽、垂直铺膜、填充料的回填、防渗墙的接头施工。成槽施工设备包括液压抓斗、铣槽机、TRD、锯槽机等,铺膜方法有重力沉膜法、振动插入法、插入式,填充料有土与膨润土的混合填充、低标号混凝土、自凝灰浆、塑性混凝土等。接头形式有搭接式和锁扣式。介绍了三种土工膜复合防渗墙的施工工艺,并介绍了其应用范围。The construction technology of geo-membrane composite impermeable wall is a high impermeable and environmental construction technology. Its key technologies include the grooving,vertical membrane laying, stuffing backfill and joint construction of impermeable wall. The grooving construction equipment includes the hydraulic grab, slot milling machine, TRD, groove sawing machine and so on. The membrane laying methods are the gravity membrane deposition method and vibrating insertion method. The stuffing is the soil mixed with bentonite, low-grade concrete, self-solidified mortar and plasticity concrete. The joint type includes the overlap joint and latch joint. Three construction technologies of geomembrance composite impermeable wall are introduced and the application ranges are also introduced.

关 键 词：土工膜复合防渗墙 重力沉膜法 振动插入法 TRD工法 自凝灰浆 

分 类 号：TU473.6[建筑科学—结构工程]