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目前,缓斜及倾斜厚煤层分层下行开采时的巷道布置多采用内错布置形式。我矿大煤层平均采厚5.6m,分三层下行开采,分层采高1.8m。分层巷道布置一般为顶、中层内错,底层外错。巷道支护使用水平梯形工字钢棚子。巷道掘进形式为下帮摸顶或摸网,上帮留顶煤。以前,巷道规格较小,无论何种形式的巷道布置,动工作面开采一般无较大影响。但在实行巷道支护改革、采用大断面支护后,对大倾角厚煤层分层开采的工作面却带来一些新的问题。
At present, the inclined and inclined thick seam stratification down the roadway when the use of more internal layout of the wrong layout. The average coal mining thickness of mine is 5.6m, which is mined in three layers and stratified mining height is 1.8m. Stratified roadway layout is generally top, the middle of the fault, the bottom of the outer fault. Roadway support using horizontal trapezoidal I-beam shed. Roadway heading form to help touch the top or touch the net, to help stay top coal. In the past, the laneway specifications were small, no matter what form of roadway layout, moving face mining generally no significant impact. However, the implementation of roadway support reform, the use of large cross-section support, the large dip thick seam mining face has brought some new problems.