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一、概述近年来,随着综合机械化采煤(简称综采)的应用和推广,大大地加快了回采工作面推进速度,使产量成倍增长.但在沼气含量较大的煤层采用综采时,必将导致工作面沼气涌出量急剧地增长,沼气局部集聚机会增多,从而给矿井安全生产带来严重威胁.在这种情况下,因受到沼气因素的限制从技术上可能达到的产量而受到影响.
I. Overview In recent years, with the application and promotion of mechanized coal mining (referred to as fully mechanized coal mining), the advancing speed of the mining face is greatly accelerated and the output is doubled. However, when the coal seam with large biogas content is fully mechanized mining , Which will inevitably lead to the rapid increase of methane emission on the working face and the increased chance of local gathering of biogas, thus posing a serious threat to the safety of coal mines.In this case, due to the technically possible output due to the limitation of biogas factor, affected.