【摘要】 介绍了鸡西矿业集团杏花煤矿采用PA-膨胀注浆锚杆支护巷道机理、施工工艺及其支护效果。实践表明,该锚杆在加固巷道松动围岩方面效果很好,不仅能够提高破碎顶帮的整体强度,增加围岩自身的承载力,而且注浆浆液充填压密裂隙,可防止漏风,避免发火,并具有堵水作用。更多还原

【Abstract】 Introduced west the Heilongjiang Province chicken the mining industry group apricot blossom coal mine used the PA-inflation note thick liquid bolt support tunnel mechanism,the construction craft and its support the effect.The practice indicates,this bolt is reinforcing the tunnel becomes less crowded Surrouding rock the aspect effect is very good,has the promoted application value.更多还原