洪泽盐盆赵集矿区深部涌漏水的危害及防治水对策

The Hazards of the Deep Water Outflow of Zhaoji Mining Areain Hongze Salt Basin and Its Prevention Strategy

江苏淮安洪泽盐盆赵集矿区经30余年勘查开采,在地下深部出现淡卤水涌漏现象。文章对涌漏水机理进行分析,对涌漏水造成的危害进行评价,针对性地提出了消除或减小危害的技术措施。研究认为,在盐矿勘查开采过程中由于工艺、方法等多方面原因,使矿区内三垛组下部、戴南组上部原为干燥状态、成岩胶结不实的砂质岩层充水,由“透水层”转变为“储水层”,在具备泄压条件时发生涌漏,对矿产勘查开采造成影响,对地质环境安全造成威胁。采用优化井身结构、改进开采工艺等措施可消除或减小涌漏水的危害,实现开发矿产资源与保护地质环境的和谐统一。

After more than 30 years of exploring and mining Zhaoji Mining Area in Huai'an Hongze salt basin,there occurs a phenomenon that brine outflows in the deep underground.The article analyzed the mechanism of water outflow,evaluated its hazards,and contrapuntally put forward the technical measures to eliminate or reduce the hazards.According to researches,due to various reasons in the process of salt mine exploration and mining such as mining process,method,etc.The unsound cementation sandy strata in the diagenesis process between the lower part of E 2 s and the upper part of E 2 d,which were in dry state before,have became rich in water.These places have changed from permeable stratum into Water-bearing stratum,and water outflow happens in the pressure relief conditions,which impacts on mineral exploration and mining,and threatens the safety of geological environment.By adopting the measures such as optimizing well bore structure and improving mining technologies can eliminate or reduce the hazards of water outflow,and can also realize the harmonious unity of developing the mineral resources and protecting the geological environment.