混凝土面板堆石坝面板脱空检测及分析  

Void Detection and Analysis of Concrete Face Slab of Rockfill Dam

作　　者：韦斯 WEI Si(Guizhou Institute of Water Resources and Hydropower Survey and Design CO.LTD.,Guiyang 550002,China)

机构地区：[1]贵州省水利水电勘测设计研究院有限公司,贵州贵阳550002

出　　处：《河南水利与南水北调》2022年第4期60-62,共3页Henan Water Resources & South-to-North Water Diversion

摘　　要：混凝土面板堆石坝因施工方便、运行稳定的特点,在水利水电工程项目中得到广泛应用。混凝土面板是面板堆石坝防渗的关键,而面板脱空会恶化面板的受力状况,严重时会引起面板开裂,破坏坝体防渗体系,危及大坝安全,因此对面板脱空的检测尤为重要。地质雷达是一种电磁类物探方法,主要用于探测地下介质分布情况及地层分界面的电磁波技术。地质雷达作为一种高效率、高精度的检测手段,在混凝土面板堆石坝面板脱空检测中广泛应用。近年来,贵州省水利建设事业得到了快速发展,结合贵州省平坝县石朱桥水库工程实例,介绍地质雷达技术在混凝土面板堆石坝面板脱空检测中应用情况,并结合混凝土面板堆石坝面板脱空位置的分布情况简要分析面板脱空的主要特点。Concrete face rockfill dam is widely used in hydraulic and hydropower projects due to its convenient construction and stable operation. Concrete face slab is the key to seepage prevention of face rockfill dam. However, void of the face plate will deteriorate the stress condition of plate, and even cause the cracking of the plate, which will destroy the seepage control system of the dam body and endanger the dam safety. Therefore, the detection of the face plate is particularly important. Geological radar is an electromagnetic geophysical method, which is mainly used to detect the distribution of underground media and electromagnetic wave technology of stratum interface. As a high efficiency and high precision detection method, geological radar is widely used in the slab void detection of concrete face rockfill dam. In recent years, water conservancy construction in Guizhou Province has developed rapidly. Based on the engineering examples of Shizhuqiao Reservoir Project in Pingba County, Guizhou Province, the application of geological radar technology in slab void detection of concrete face rockfill dam is introduced in this paper, and the main characteristics of slab void in combination with the distribution of slab void position of concrete face rockfill dam is briefly analyzed.

关 键 词：混凝土 面板堆石坝 垫层 面板脱空 地质雷达 

分 类 号：TV512[水利工程—水利水电工程]