通过对 9# 煤层首采工作面进行矿压显现规律的研究 ,提出了较可靠合理的支护强度和加强顶板管理的措施 ,并对原支护密度进行了调整 ,明显降低了梁、柱折损 ,取得了较好的经济技术效果。 By studying the law of underground pressure in the first mining face of 9 # coal seam, some reasonable and reasonable support strength and measures to strengthen the roof management are put forward. The density of the original support is adjusted and the beam and column folding are obviously reduced Loss, and achieved good economic and technological results.