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神东矿区综采特点是高产高效,推进速度快,工作面长(240m),回采距离大(3000～5000m)。为保证综采面的快速安全高效开采,减少工作面搬家次数,实现高产目的,关键是要解决浅埋煤层条件下大断面、超长距离回采巷道的安全维护问题,即应设计适宜的巷道支护方式与支护参数,选择合理的回采巷道煤柱宽度。本文针对神东矿区的典型浅埋煤层条件,用现场实测煤柱支承压力分布方法,分析给出了榆家梁矿、补连塔矿和大柳塔矿主采煤层回采巷道的合理煤柱宽度范围,对今后回采巷道布置、煤柱宽度以及巷道支护设计,具有工程实用价值和决策指导作用。
Shendong Mining Area is characterized by high yield and high efficiency, fast propulsion, long working face (240m), large mining distance (3000 ~ 5000m). In order to ensure the quick and safe mining of fully mechanized mining face, reduce the frequency of face moving and achieve high yield, the key is to solve the problem of safe maintenance of large section and ultra-long distance mining tunnel under shallow seam conditions, that is to say, Support methods and support parameters, choose a reasonable mining roadway coal pillar width. In this paper, according to the typical shallow coal seam conditions in Shendong Mining Area, the reasonable coal pillar width of mining roadway in Yujialiang Mine, Range, for the future mining roadway layout, pillar width and roadway support design, with practical value and decision guidance role.