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昆明冶金高等专科学校学报 ›› 2019, Vol. 35 ›› Issue (1): 1-.DOI: 10.3969/j.issn.1009-0479.2019.01.001

• 资源开发与测绘 •    下一篇

“锚杆护顶浅孔+中深孔留矿” 法在高井槽铁矿的应用

夏建波1,林友1,林吉飞1,沈旭1,赵明亮2   

  1. 1.昆明冶金高等专科学校矿业学院,云南 昆明 650033; 2.云南迪庆有色金属有限责任公司,云南 香格里拉 674400
  • 收稿日期:2018-10-22 出版日期:2019-02-28 发布日期:2019-02-28
  • 作者简介:夏建波 (1976-),男,重庆潼南人,副教授,工学硕士,主要从事采矿工程、安全工程专业教学与科研。
  • 基金资助:
    云南省高等职业教育科学研究项目:矿山安全评价模拟系统开发 (GZYB201404);全国有色金属教学指导委员会教学改革项目:高职金属与非金属矿开采技术专业教学标准修 (制)订开发研究 (YS2017006)。

Application of Shallow-hole & Medium-length-hole Shrinkage Stoping Mining Method with Bolting Roof in Iron Mine#br#

XIA Jianbo1,LIN You1,LIN Jifei1,SHEN Xu1,ZHAO Mingliang2   

  1. 1.Faculty of Mining Engineering,Kunming Metallurgy College,Kunming 650033,China;
    2.Yunnan Diqing Nonferrous Metals Co.,Ltd.,ShangriLa,Yunnan 674400,China)
  • Received:2018-10-22 Online:2019-02-28 Published:2019-02-28

摘要: 针对高井槽铁矿原采矿方法顶板维护难题,提出了锚杆护顶浅孔 +中深孔留矿法采矿方案,将矿体分为两层,上层用浅孔爆破回采,下层用平行中深孔落矿,上、下两层同时自下而上推进,利用锚杆对局部不稳固顶板进行加固。该采矿方案在矿山进行了采矿实验并取得成功,相对原开采方案,新方案千吨采切比减少了2.42m·kt-1,综合回收率提高了 5.2%,采矿工效提高了 2.3t·工-1·班-1,生产能力提升了 120t·d-1,大块率下降了 4.3%,采矿直接成本下降了 5.6元·t-1,该采矿方案具有较好的应用推广价值。

关键词: 急倾斜, 中厚矿体, 采矿方法, 锚杆护顶, 浅孔 +中深孔, 留矿法

Abstract: To solve the problem of roof maintenance in the original mining method in Gaojingcao iron mine,the paper put forward a mining scheme for shallow hole & mediumlengthhole shrinkage stoping method for roof protection with bolts.The orebody is divided into two layers,the upper layer is blasted by shallow hole while the lower layer is blasted by parallel mediumdeephole,andtheupperandlowerlayers are pushed from bottom to top simultaneously.The unstable roof is strengthened by an chorbolts.The mining scheme has been successfully applied to the mines:the miningcutting ratio of 1000 ton swas reduced by2.42m·kt-1,the comprehensive recovery was increased by5.2%,the mining efficiency up by 2.3t·shift-1,the production capacity increased by 120t·d-1,and the direct cost of mining has been reduced by5.6yuan·t-1.The improved scheme has higher practical value and economic benefits.

Key words: steeply inclined, medium thick orebody, mining method, bolting roof, shallow hole & medi
um-length-hole,
shrinkage stoping method

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