浅埋深薄基岩超大断面切眼支护优化分析

The optimization analysis of the supporting for super large section open-off cut with shallow buried and thin bedrock

针对神南矿区红柳林煤矿5^(-2)煤层埋藏浅、基岩厚度较薄、切眼断面大、支护强度高的特点,现场采用顶板钻孔窥视实验和切眼位移监测实验对切眼围岩特点及支护设计进行了分析,并通过数值模拟研究对现有的支护方式进行了优化,经现场工业性试验验证支护安全可靠,技术经济效益明显,在类似条件下有较强的推广应用价值。

According to the characteristics of shallow buried and thin bedrock of 5- 2coal seam and large section and high supporting strength of open-off cut in Hongliulin coal mine,based on the results of roof drilling peep,displacement monitoring and numerical simulation analysis,the supporting optimization of large section open-off cut was carried out. The field industrial test shows that the supporting scheme is rational,technical and economic benefits is significant,which has a strong application value under similar conditions.