华北东部平原浅层高矿化弱渗透地下水的开发技术示范研究

Development and Utilization Mode of High Salinity Shallow Groundwater from Low Permeability Aquifer in Eastern North China Plain

开发利用华北东部低海拔平原浅层弱渗透含水层地下水,是挖掘水土资源潜力与提高光热生物环境资源利用水平的关键问题。通过借鉴国内外经验和现场勘查设计施工,在天津、沧州、衡水和济阳等地成功建立了'抽咸换淡辐射井'、'河水-雨洪水-潜水循环利用井'、'虹吸连通增采井'等不同类型示范工程,取得了在低成本条件下的良好效果。这既解决了淡水、微咸水、甚至是咸水地区的农业灌溉用水问题,也使浅层咸水大规模改造利用成为可能,为合理开发利用水土资源开辟了一条可行的途径。

Development and utilization of shallow groundwater from low permeability aquifer in low altitude plain of the eastern North China is the key issue to excavate resources potential of water and soil and increase resource utilization of light-heat biological environment. Based on the lessons from home and overseas study and investigation and construction in situ, different types of demonstration projects were successfully implemented in Tianjin, Cangzhou, Hengshui and Jiyang, such as ＂radial well of pumping salt water and replacing fresh water＂, ＂recycling well of river water-rain floods-phreatic water＂, ＂enhancing pumpage well by siphone-conectivity way＂and has achieved good results under the condition of low-cost. It has not only solved the problem of irrigation water shortage in fresh water, brackish water, even salt water distribution areas, but also made large-scale utilization of shallow salt water become possibility, and provide a feasible way for reasonable development and utilization of soil and water resources.