简约高效深孔拉底方法的研究与应用

金属矿山 ›› 2014, Vol. 43 ›› Issue (01): 13-15.

简约高效深孔拉底方法的研究与应用

李伟明^1,2,3

1.长沙矿山研究院有限责任公司，湖南长沙 410012；2.国家金属采矿工程技术研究中心，湖南长沙 410012；3.金属矿山安全技术国家重点实验室，湖南长沙 410012

出版日期:2014-02-14 发布日期:2014-02-25

Application and Study of Brief High Efficiency Deep Hole Undercutting Method

Li Weiming^1,2,3

1.Changsha Institute of Mining Research Co．，Ltd.，Changsha 410012，China；2.National Engineering Research Center for Metal Mining，Changsha 410012，China；3.State Key Laboratory of Safety Technology of Metal Mines，Changsha 410012，China

Online:2014-02-14 Published:2014-02-25

摘要/Abstract

摘要： 大尺度采场在拉底工程形成方面的传统施工办法是，先沿采场走向开掘1条拉底巷道，然后以拉底巷道为凿岩施工空间，施工上向扇形中深孔，再逐排爆破，最终形成一定高度的拉底空间（即底部结构）。然而这样却难以体现深孔采矿法的高效率的特点。为此，以安庆铜矿的深孔大采场为试验研究对象，通过优化凿岩爆破参数，改变传统的拉底方法，采用深孔可变大小断面球状药包挤压爆破技术、深孔压顶爆破技术、深孔侧向爆破崩矿技术，最终形成了稳定的、可供利用的底部结构，这样大大加快了拉底的速度，更大程度地提高了高效深孔采矿法的整体回采效率。办法很简约，具有较好的推广意义。

关键词: 拉底空间, 凿岩爆破参数, 挤压爆破, 压顶爆破, 高效深孔, 简约

Abstract: Taking the deep hole large stope in Anqing Copper Mine as research object， through optimizing the blasting parameters，and transferring the traditional undercutting method，the methods of the deep-hole variable cross-section spherical charges extrusion blasting technology，deep-hole coping blasting technology，deep-hole lateral caving technology are adopted to eventually form a stable and available bottom structure.This greatly accelerated the speed of undercutting and improved the overall recovery efficiency of long-hole mining method.Tests of undercutting in a stope indicated that each technical and economic indicator was better improved.At the same time，comparing with the traditional medium-deep hole undercutting method，the efficient deep-hole undercutting method saved about 15 d.So，it is very simple and has a significance of promotion.

Key words: Undercutting space, Drilling and blasting parameters, Extrusion blasting, Coping blasting, High efficiency deep hole, Brief

李伟明. 简约高效深孔拉底方法的研究与应用[J]. 金属矿山, 2014, 43(01): 13-15.

LI Wei-Ming. Application and Study of Brief High Efficiency Deep Hole Undercutting Method[J]. Metal Mine, 2014, 43(01): 13-15.

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