摘要
曹庄煤矿102煤层,上距9煤层采空区平均2m,9煤层开采造成102煤层顶板十分破裂,使得102煤层回采巷道锚杆支护十分困难,目前普遍采用工字钢棚支护。为提高巷道掘进速度,降低支护成本,在102煤层10804运中巷,进行锚杆桁架支护试验,取得了较好的支护效果,为类似条件的回采巷道支护提供了经验,具有很好的应用前景。
The 102 seam is 2. 0m under the gob of 9 seam in Caozhuang coal mine. The roof support for the roadway of 102 seam is not bolt but the steel beam sets because the roof strata of 102 seam are much broken due to 9 seam mined out. In order to speed the advance rate and lower the support cost, roof truss- bolt system test has been made in 10804 haulage roadway and achieved gratifying success.
出处
《中国矿业》
北大核心
2006年第6期50-51,64,共3页
China Mining Magazine
