基于瞬变电磁法在晋牛煤矿采空区积水的探测应用

Research on detection of water accumulation in Goaf Based on transient electromagnetic method

本文针对晋牛煤矿2#及9+10+11#采空区积水等问题,通过现场调查和应用瞬变电磁法对井下采空区积水分布特征进行探测。本次勘查区面积1.38km^(2),测网密度40m×20m,完成物探测线28条,测点1785个;通过分析结果可知测区2#煤层采空积水区2处;9+10+11#煤层异常区5处;为下一步制定合理的探放水措施,解除采空区积水对矿井生产造成的影响,确保安全生产奠定了基础。

In this paper,aiming at the problems of water accumulation in goaf of Jinniu coal mine,such as 2#and 9+10+11#goaf,through field exploration and application of transient electromagnetic method to detect the distribution characteristics of underground goaf water.The area of the exploration area is 1.38km^(2),the survey network density is 40×20m,28 geophysical survey lines and 1785 survey points have been completed;the analysis results show that there are 2 goaf water accumulation areas in 2#coal seam;5 abnormal areas in 9+10+11#coal seam;which lays a solid foundation for the next reasonable water exploration and drainage method,relieving the influence of water accumulation in goaf on mine production and ensuring safe production.