摘要
马脊梁矿14号层机轨合一巷断面大,巷道围岩应力大,煤层顶板属复合层顶板,顶板整体强度低,在原有的锚杆支护的基础上,选择合理的支护参数,以锚索组成锚、尼龙网、及锚索联合支护,提高了煤巷的支护效果。
In the No. 14 seam of Majiliang mine, surrounding rock stress is heavy and roof strength is low. With rational support parameters, bolt-rope composite support is used to raise the support effect and economic benefit.
出处
《山西煤炭》
2006年第3期16-18,共3页
Shanxi Coal
