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金属矿山 ›› 2012, Vol. 41 ›› Issue (04): 8-11.

• 采矿工程 • 上一篇    下一篇

预裂爆破成缝及参数计算原理

袁康   

  1. 中冶集团铜锌有限公司
  • 出版日期:2012-04-23 发布日期:2012-04-26

The Pre-split Blast's Gap Form and Parameters Calculation

Yuan Kang   

  1. MCC Tongsin Resources Co., Ltd
  • Online:2012-04-23 Published:2012-04-26

摘要: 预裂爆破起爆在一定时差范围内,先爆孔在邻爆孔产生的预应力作用能够控制定点定向初始裂纹的生成。把被爆介质看成是连续和间断的统一体,运用爆炸力学和断裂力学理论来研究预裂爆破成缝原理,推导出预裂爆破主要参数的计算公式。

关键词: 预裂爆破, 成缝原理, 初始裂纹, 参数计算

Abstract: During certain times, pre-stress that pre-blast hole produced to neighboring hole can control form of original crack in the fixed point and fixed direction, and it can consider blasted medium as uniformity of continuity and discontinuity body. Pre-split gap formed principle is researched using blasting mechanics and fracture mechanics. And the main parameters of pre-split blast's calculation formula are derived.

Key words: Pre-split, Theory of gap-formation, Initial gap, Parameter calculation