马兰矿近距离采空区下巷道内错距离的研究

Study on the Internal staggered Distance in the Roadway Under the Close Distance Goaf of Malan Mine

针对马兰矿10606工作面近距离采空区下回采巷道稳定性较差、顶板易冒落等问题,结合工程地质条件,采用数值模拟的方法,确定了1^(#)煤层和2^(#)煤层近距离采空区回采巷道内错10~20 m的合理距离,并通过现场实践以及围岩变形监测验证了数值计算结果的合理性。

Aiming at the problems such as poor stability and the roof is easy to fall of the mining roadway under the close distance goaf of the 10606 working face in Malan Coal Mine,combined with the engineering geological conditions,the method of numerical simulation is adopted,the reasonable distance of internal staggered 10-20 m in the close distance goaf of the 1^(#)coal seam and the 2^(#)coal seam is determined,and the rationality of the numerical calculation results is verified by field practice and surrounding rock deformation monitoring.