煤炭工程 ›› 2013, Vol. 45 ›› Issue (11): 40-41.doi: 10.11799/ce201311014

• 施工技术 • 上一篇    下一篇

大断面硬岩巷道聚能爆破快速掘进技术的应用

杨战标   

  1. 中国平煤神马集团技术中心
  • 收稿日期:2013-06-25 修回日期:2012-12-19 出版日期:2013-11-10 发布日期:2013-11-11
  • 通讯作者: 杨战标 E-mail:yzb0309@126.com

Applications of Speedy Advancing Technique by Shaped Charge Blasting for Hard Rock Roadway with Large Section

  • Received:2013-06-25 Revised:2012-12-19 Online:2013-11-10 Published:2013-11-11

摘要:

针对平煤四矿岩巷断面大、岩石硬、应力高的特点及掘进中爆破效率和进尺低、超欠挖严重的问题,采用聚能爆破快速掘进技术,在掘进爆破作业中采用聚能装置,并设计了聚能爆破作业方案。现场聚能爆破工业性试验结果表明,该方案与原方案相比,可提高掘进进尺15%、降低巷道围岩超欠挖量50%、节约成本20%,能获得良好的技术经济效果。

关键词: 大断面, 硬岩巷道, 聚能爆破, 快速掘进

Abstract:

According to the characteristics of large section and hard rock and high stress, and problem of low advancing blasting efficiency and footage and serious overbreak and underbreak on rock roadway advancing in Fourth Mine of Pingdingshan TianAn Coal Co.,LTD, we adopted the speedy advancing technique by shaped charge blasting, and used shaped charge device in advancing blasting work, and then designed work program of shaped charge blasting. The shaped charge blasting engineering practice showed that, compared with original parameters, the new parameters could increase the footage by 15% and reduce the amount of overbreak and underbreak on roadway surrounding rock by 50% and save the cost by 20%, and achieve good technology economic results.

Key words: large section, hard rock roadway, shaped charge blasting, speedy advancing