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随着矿井向深部开采,高应力软岩巷道支护问题日益突出,淮北矿区桃园煤矿深部开采水平位于-800 m标高左右,特别是二水平泵房和变电所作为矿井深部水平延深的核心硐室,围岩条件差,地压显现明显,支护困难。研究应用以锚杆主动支护为主的“锚网注”联合支护技术,围岩强烈形得到有效控制,取得了良好的支护效果。
With the mining to the deep, the support of high stress and soft rock roadway has become increasingly prominent. The deep mining of Taoyuan coal mine in Huaibei Mining Area is located at the level of -800 m. In particular, the two-level pumping station and substation are at the core of the deep horizontal depth of the mine Cave, poor rock conditions, pressure showed obvious support difficulties. Research and application of active support for the anchor-based “anchor network injection ” joint support technology, strong shape of the surrounding rock to be effectively controlled, and achieved good support effect.