急倾斜极薄矿脉破碎软岩支护技术研究  

Study on support technology of broken soft rock in steeply inclined and extremely thin ore vein

作　　者：吴枝亮 任玉东 周乐 周佳琦 Wu Zhiliang;Ren Yudong;Zhou Le;Zhou Jiaqi(China National Gold Group Corporation Jiapigou;Changchun Gold Research Institute Co.,Ltd.)

机构地区：[1]中国黄金集团夹皮沟矿业有限公司 [2]长春黄金研究院有限公司

出　　处：《黄金》2024年第5期5-8,共4页Gold

基　　金：国家重点研发计划项目(2022YFC2905003)。

摘　　要：针对某矿山采场片帮频发、超挖严重和采矿损失贫化较大等问题,结合极薄矿脉作业空间受限等问题,提出了采用锚杆+双筋条的支护技术,其实质是双筋条支护的时效性和柔韧性,在支护过程中使整排的锚杆群在托板作用下协同起作用,从而使可能冒落的关键块体处于稳定状态。该支护技术很好地解决了极薄矿脉支护难题,有利于提高采场安全性,并降低矿石贫化率,从而提高矿山的经济效益。To address the frequent occurrence of roof caving,severe over-excavation,and significant ore loss in a mine stope,combined with the limited operating space due to extremely thin ore veins,a bolt+double reinforcing bar support technology is proposed.The essence lies in the timeliness and flexibility of double reinforcing bar support,which allows the entire row of bolt groups to act collectively under the action of the support board during the support process,thereby stabilizing critical rock blocks that may cave in.This support scheme effectively solves the problem of supporting extremely thin ore veins,improves stope safety,and reduces ore dilution,thus enhancing the economic benefits of the mine.

关 键 词：急倾斜 极薄矿脉 破碎软岩 围岩支护 锚杆 双筋条 

分 类 号：TD353[矿业工程—矿井建设]