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.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
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
关键词
咸水区
人饮水井
成井工艺
技术问题
salt-water area
drinking-water well
well completion technologies
technical problems
作者简介
付东林（1970-）,男,本科,主要从事水文地质工程地质野外勘查工作. E-mail：fdl700224@sina.com
