济三煤矿53下12顺槽支护技术研究

摘要

Considering supporting effect and economic cost, the entry of 5312 working face in Jining II coal mine, determined to use the rectangular section, and the support scheme with a spacing of 750 × 800mm bolt and rhombus metal net. After pressure testing in site, achieved good supporting effect and economic beneift.%济三煤矿53下12顺槽综合考虑支护效果及经济成本，确定采用矩形巷道断面，间排距为750×800mm的锚杆加菱形金属网的支护方案。经过现场矿压检验，取得了良好的支护效果及经济效益。