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有色金属(矿山部分):2017,69(5):-
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软破难采矿体深孔凿岩控制技术
张连富,杨柳华,吴爱祥,王洪江,赵鑫
(北京科技大学 土木与资源工程学院,北京科技大学 土木与资源工程学院,北京科技大学 土木与资源工程学院,北京科技大学 土木与资源工程学院,北京红晶石投资咨询有限责任公司)
The control technology of deep drilling in weak broken and untouchable orebody
ZHANG Lianfu,YANG Liuhua,WU Aixiang,WANG Hongjiang and ZHAO Xin
(School of Civil and Resource Engineering,University of Science and Technology Beijing,School of Civil and Resource Engineering,University of Science and Technology Beijing,School of Civil and Resource Engineering,University of Science and Technology Beijing,School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing Balas Investment Consultion Co.)
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投稿时间:2017-04-07    修订日期:2017-04-10
中文摘要: 某铜矿属沉积型矿床,其矿岩硬度系数f=2~5,节理裂隙发育属软破难采岩体,且具有显著遇水泥化特征。为实现对资源的高效回采,矿山改用大直径深孔落矿,但受限于矿山没有联通地表的斜坡道,且地下巷道变形严重有效断面小,只能选用小型深孔凿岩设备。在现场深孔凿岩试验过程中,应用钻孔测斜技术绘制钻孔轨迹,深孔凿岩其钻孔偏斜严重,极大地影响了落矿效果。通过对钻头受力分析,建立钻头受力作用模型,揭示钻孔轨迹偏斜机理,提出了提高钻孔精度技术措施,通过增大导向杆直径及增设稳杆器等措施,使得钻孔合格率从40%提高至93.3%,应用效果显著,有效地解决了该矿山深孔凿岩技术难题。
Abstract:The copper mine is sedimentary deposit, whose ore-bearing rock hardness coefficient f is between 2 and 5. It is a kind of weak broken orebody which is difficult to exploit because of joint fissures and has the nature of cement. To achieve the effective mining of resources, the mine applied major diameter deep hole mining as an alternative. However, with the restriction of lacking ramp that connects the underground to surface in the mine and of small effective section as a result of serious deformation of underground drifts, the mine has to choose small-type deep hole drilling equipment. During the field test of deep hole drilling, it was found that the drill holes deflected significantly with the application of surveying and mapping drilling technology to draw the track of holes, which influenced the result of mining badly. By analyzing the stress forced on the drills, we built load-bearing model of drills to indicate the mechanism of deflection of drill holes’ track. As a result, it was proposed that with the measurements of enlarging the diameter of guide bar and adding stabilizer to improve the accuracy of drilling, the rate of qualified holes increased from 40% to 93.3%, which demonstrated that the measurements were effective and helping to solve the problems of deep hole drilling in the mine.
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基金项目:国家自然科学基金项目(51374034),“十二五”国家科技支撑计划项目(2012BAB08B02),教育部长江学者和创新团队发展计划项目(IRT0950
引用文本:
张连富,杨柳华,吴爱祥,王洪江,赵鑫.软破难采矿体深孔凿岩控制技术[J].有色金属(矿山部分),2017,69(5):.
ZHANG Lianfu,YANG Liuhua,WU Aixiang,WANG Hongjiang,ZHAO Xin.The control technology of deep drilling in weak broken and untouchable orebody[J].NONFERROUS METALS(Mining Section),2017,69(5):.

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