供水井经常由于滤水管部分和沉砂管内充满来自上部岩层的或含水层的砂而停止出水。这一般发生在滤水管的结构与含水岩层的粒度成分不相适应和套管护壁没满足要求的情况下。现介绍一个在复杂地质技术条件下所钻的供水井修复的经验。它钻于1981年,为某企业供水用,井深230米。其地质剖面中0—179米含水砂层(至60米深)、黑粘土 Water supply wells are often stopped due to flooding of the strainer section and settling tank with sand from the upper formation or aquifer. This typically occurs when the structure of the filter pipe is not compatible with the grain size composition of the aquifer and casing casing does not meet the requirements. Here is a description of the experience of repairing a water supply well drilled under complex geological conditions. It was drilled in 1981, for an enterprise water supply, depth of 230 meters. Its geological section 0-179 meters of water-bearing sand (up to 60 meters deep), black clay