综放大断面煤巷锚网支护矿压规律

Rock pressure regularity of bolting with wire mesh in large section coal roadway with top-caol caving mining

通过现场实测研究 ,分析了服务于年产 40 0万 t高产高效综放面的大断面煤巷锚网支护围岩变形及支承压力分布规律。指出超前支护方式 ,距离及支护强度的改变不能影响超前支承压力峰值的位置 ,仅影响巷道的围岩变形量值。

Based on the field observation, this paper analyzes the deformation of surrounding rock and distribution of abutement in large section coal roadway bolted with wire mesh in fully mechanized mining face with top coal caving, which production is 4 million tons pe year with high output and high efficiency. The fore support's patterns, distances and strength can only influence the surrounding rock deformation value of roadway. The fore abutement peak value position can't be influenced by them.