蒙陕接壤区深埋煤层开发过程中矿井涌水量变化特征

发布时间：2018-03-23 01:16

本文选题：矿井涌水量　切入点：蒙陕接壤区　出处：《煤田地质与勘探》2017年04期 　论文类型：期刊论文

【摘要】：蒙陕接壤区侏罗系深埋煤层开采过程中,掌握不同阶段矿井涌水量变化规律,是保障煤矿安全的关键。从含水层发育特征、巷道掘进进尺、采空区半径等方面开展了相关研究,结果表明:蒙陕接壤区煤层顶板导水裂缝带范围内的3层复合含水层,富水性差异较大,分别对巷道掘进阶段和工作面回采阶段涌水量影响较大。煤矿建井阶段,矿井涌水量随着巷道掘进进尺增加而增加,但单位进尺涌水量变化不大,平均涌水量为0.008 32 m~3/(h·m)。工作面回采前将钻孔水量降至5.0m~3/h以下,水压降至1.0 MPa左右,实现了顶板含水层静储量充分疏放目标。首采面和接续面回采阶段,矿井涌水量呈"阶梯式"平稳增加,矿井涌水量与采空区半径呈线性正相关关系。通过对侏罗系深埋煤层开采过程中矿井涌水量变化规律和影响因素的研究,可以为其他矿井建设和工作面回采提供安全保障和科学依据。
[Abstract]:In the process of deep buried coal seam mining of Jurassic system in the bordering area of Mongolia and Shaanxi, it is the key to ensure the safety of coal mine to master the changing law of mine water discharge at different stages. The relevant research is carried out from the aspects of aquifer development characteristics, roadway driving ruler, goaf radius and so on. The results show that the water-rich water content of the three layers of composite aquifer in the fracture zone of the roof of coal seam in the contiguous area of Inner Mongolia and Shaanxi is quite different, which has a great influence on the water inflow in the roadway excavation stage and the mining face stage, respectively, and in the coal mine construction stage. The mine water inflow increases with the increase of roadway driving scale, but the average water inflow is 0.008 32 mm2 / 3 / h 路m1.The water pressure is reduced to about 1. 0 MPa before the coal face is mined, and the borehole water quantity is reduced to below 5.0m~3/h, and the water pressure is decreased to about 1. 0 MPa, and the water pressure decreases to about 1. 0 MPa before mining. The static reserves of the roof aquifer are fully sparse. In the stage of mining of the first mining face and the connecting surface, the water inflow of the mine increases steadily as a "step by step". There is a linear positive correlation between mine water inflow and the radius of goaf. Through the study of the variation law and influence factors of mine water discharge in the process of deep buried coal seam mining in Jurassic system, this paper discusses the relationship between mine water discharge and mine goaf radius. It can provide safety guarantee and scientific basis for other mine construction and face mining.
【作者单位】：中煤科工集团西安研究院有限公司;陕西省煤矿水害防治技术重点实验室;
【基金】：国家自然科学基金项目(41302214,41402220) 国家重点研发计划项目(2016YFC0501104) 中煤科工集团西安研究院有限公司科技创新基金项目(2015XAYMS18)~~
【分类号】：TD742

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