西北半干旱地区大水矿床成因机制--以锦界煤矿为例

摘要

Taking Jinjie Coal Mine as an example ,on the basis of the hydrogeological analysis of the deposit ,the struc-ture and influencing factors of mine water inflow are studied here in detail .The research results show that Jinjie Coal Mine’s mining destroys the water-resisting roof layer ,and then conducts the water channels .As a result ,the original mode of hydrological cycle is changed ,resulting in the pore water ,fissure water and surface water flow into the goaf and working surface through the water channels ,which would help the water inflow be quite large(even reach 5 300 m3 /h) , then the heavy-water deposit would be formed .Based on this ,the protection measures of the mine aquifer are put for-ward ,and the scientific basis could be provided for the mine safety in production and the water resource protection in this area .%以锦界煤矿为例，通过矿床水文地质分析，研究矿坑涌水量的构成及其影响因素，结果表明：锦界煤矿开采破坏了顶板隔水层，导通了充水通道，改变了原有的水循环模式，使孔隙水与裂隙水通过充水通道进入采空区和工作面，涌水量达到5300 m3/h ，从而形成了大水矿床。在此基础上，提出矿区含水层的保护措施，为矿井安全生产和该地区水资源保护提供科学依据。