石羊河下游咸水区饮用水成井关键工艺分析与应用  

Application and analysis of the key well completion technologies for drinking-water supply in the salt-water area on the lower Shiyanghe River basin

作　　者：付东林[1] 薛斌义[1] 叶得金[1] 佟成利[1] 贾贵义[1] 李爱军[1] 刘如珍[1] 

机构地区：[1]甘肃省地质调查院,兰州730000

出　　处：《水文地质工程地质》2006年第6期104-106,共3页Hydrogeology & Engineering Geology

基　　金：甘肃严重缺水地区地下水勘查示范项目

摘　　要：文章分析了石羊河下游咸水区人饮水成井中存在降低井水含砂量,避免上部咸水与下部淡水相串两个关键性技术问题。通过孔径与管径的调配设计,增大环状粒料层和止水粘土层的厚度;滤水管外包尼龙纱网;粒料与止水粘土接触界面上设计反滤层;填粒后先行拉活塞利用水力夯实粒料层,再投粘土球止掉上部咸水等措施,在民勤县三口人饮水井施工中取得显著效果,证明了该套成井工艺的有效性和可行性,有望为同类地区人饮水井施工提供技术示范作用。The article suppling in salt-water mixing the upper salt analyzes the important problems existing in the well completion technologies for drinking-water area on the lower Shiyanghe river basin, which reduces sand content of well water and avoids water and the lower fresh water. Designning well tube and drill-hole diameter in order to increase thickness of both annular packing gravel and water-resisting clay, nylon net packing around well tube filters, designing filter layer on the boundary between packing gravel and water-resisting clay and ramming the gravel by working the piston into the well after gravel packing completion and the filling clay for salt-water resisting etc. we succeeded in constructing 3 drinking-water wells in Minqin County, proved the affectivity and feasibility of using it and giving a certain technical demonstration of aonstruction of drinking-water well in the same similar to this area.

关 键 词：咸水区 人饮水井 成井工艺 技术问题 

分 类 号：TV222.1[水利工程—水工结构工程]