云洞水库黏土心墙堆石坝黏土心墙填筑施工技术研究  

Research on Construction Technology of Clay Core Wall Filling for Rockfill Dam in Yundong Reservoir

作　　者：苏政宇 SU Zhengyu(POWERCHINA SINOHYDRO ENGINEERING BUREAU 14 CO.,LTD.,Kunming 650041,China)

机构地区：[1]中国水利水电第十四工程局有限公司,云南昆明650041

出　　处：《云南水力发电》2024年第1期28-34,共7页Yunnan Water Power

摘　　要：黏土心墙是以粘性土料作成的土石坝中央防渗体。常用黏土、壤土等材料碾压填筑成,要求其渗透系数值相当于坝壳材料渗透系数的1/1 000以下,且不大于10 Lu。水利工程工作条件复杂,建设工程在施工中难以准确的把握水文、地质、气象等自然条件,使项目工程施工难度增加。阐述了黏土心墙堆石坝心墙填筑施工技术,包括天然含水量高的降水处理、黏土料的碾压试验、黏土心墙的施工工艺和黏土料填筑的重点难点。Clay core wall is a central anti-seepage body of an earth rock dam made of cohesive soil material.It is commonly filled with materials such as clay and loam,and its permeability coefficient value is required to be less than 1/1000 of the permeability coefficient of the dam shell material,and not more than 10 Lu.The working conditions of water conservancy engineering are complex,and it is difficult to accurately grasp natural conditions such as hydrology,geology,and meteorology during construction,which increases the difficulty of project construction.This paper elaborates on the construction technology of filling the core wall of a clay core wall rockfill dam,including the treatment of high natural moisture content precipitation,compaction tests of clay materials,construction technology of clay core walls,and key and difficult points of clay material filling.

关 键 词：黏土 含水率 质量 压实度 施工 

分 类 号：TV541.1[水利工程—水利水电工程] TV641.41