粉砂地基中薄壁塑性混凝土截渗墙施工  

Construction of thin plastic concrete impermeable wall in silty sand foundation

作　　者：华建飞 李同汉 鲁文妍[3] HUA Jian-fei;LI Tong-han;LU Wen-yan

机构地区：[1]浙江省第一水电建设集团股份有限公司,浙江杭州310051 [2]安徽省水利水电工程建设监理中心,安徽合肥230000 [3]南京水利科学研究院,江苏南京210029

出　　处：《东北水利水电》2022年第3期20-22,71,共4页Water Resources & Hydropower of Northeast China

摘　　要：塑性混凝土截渗墙因弹性模量小、防渗性好和工程造价低等特点被广泛应用于垂直防渗工程。但该结构在粉砂地基中的施工工艺及参数具有特殊性,由于粉砂具有结构稳定性较差、富水性较高等特征,导致截渗墙成槽施工时存在槽壁坍塌等问题。文中以涡河蒙城枢纽建设工程为例,通过现场试验和工程实践,总结提出了适用于粉砂性地基的薄壁塑性混凝土截渗墙施工工法及其质量控制参数,可为类似工程提供参考。Plastic concrete impermeable wall is widely used in vertical impermeable engineering because of its small elastic modulus,good impermeability and low project cost. However, the construction technology and parameters of the structure in the silty sand foundation are special. Because the silty sand has the characteristics of poor structural stability and high water content, there are some problems such as the collapse of the groove wall during the construction of the impermeable wall. Taking the construction project of Guohe Mengcheng Hub as an example, the construction method and quality control parameters of thin-wall plastic concrete impermeable wall suitable for silty foundation are summarized and put forward through field test and engineering practice, which can provide reference for similar projects.

关 键 词：粉砂地基 渗透性 塑性混凝土 薄壁截渗墙 蒙城枢纽工程 

分 类 号：TV543.8[水利工程—水利水电工程]