急倾斜层状破碎矿体锚注一体支护技术研究  

Research on the Bolting and Grouting Combination Support Technology on the Steeply Layered Broken Orebody

作　　者：刘晓辉[1] 吴爱祥[1] 王贻明[1] 焦华喆[1] 张晋军[1,2] 施发伍[1,2] 

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [2]中色非洲矿业有限责任公司谦比希铜矿,赞比亚基特韦22592

出　　处：《矿业研究与开发》2014年第5期52-54,98,共4页Mining Research and Development

基　　金：国家自然科学基金项目(50934002;51104011;51074013);"十二五"国家科技支撑计划课题(2012BAB08B02);高等学校博士学科点专项科研基金项目(20160300)

摘　　要：针对谦比希铜矿急倾斜层状破碎矿岩基本性质,基于传统锚固和裂隙注浆理论,采用将裂隙注浆工艺融入长锚索安装工艺中的锚注一体支护技术,控制了上盘围岩的冒落,改善了采矿作业的贫化、损失指标。工业实验表明,在注浆压力0.6 MPa,水灰比0.4时,水泥浆液沿急倾斜裂隙向下扩散范围可达10m左右,减少上盘围岩冒落约40%,采场矿石损失率降低12.2个百分点,贫化率减小,提高出矿品位0.06个百分点。Focus on the characteristic of steeply layered broken rock of Chambishi Copper Mine,the bolt-grouting support technology was adopted based on the traditional anchorage and fracture grouting theory.The art of fracture grouting was integrated into the cable installation in this technology.Thereby,the falling of hanging wall rocks was controlled and the mining loss and dilution rates were improved.Industrial experiments results showed that under the grouting pressure at 0.6MPa and water cements ratio at 0.4,the cements slurry can diffuse 10 mdownward along the deeply inclined joint,the falling of hanging wall rock would reduce by 40%,the ore loss rate could decrease by 12.2percent,the dilution rate might decline,and the mining grade of ore could increase by 0.06 percent.

关 键 词：急倾斜矿体 裂隙注浆 联合支护 锚注支护 

分 类 号：TD353.6[矿业工程—矿井建设]