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含能材料  2006 

炮孔装药量与炮孔间距关系的研究

Keywords: 爆炸力学,岩石爆破,爆轰,爆破参数

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Abstract:

为了有效解决炮孔间距与炮孔用药量之间的合理性问题,运用爆炸力学理论和岩石力学理论,初步分析爆炸应力在岩体中产生破裂区的机制,并计算了炮孔中不耦合装药起爆后岩体中粉碎区和裂隙区的范围,建立了爆炸应力与裂缝区大小之间的关系,从理论上解决了炮孔装药量与炮孔间距之间的相互合理性问题。现场试验表明,对于一个掘进循环,炸药成本共减少约了17.8%;循环进尺增加了0.2m;周边炮孔眼痕率超过92%;巷道成形质量好,不平整度下降到100mm以内;取得了大块率小、巷道成型好、施工快的理想效果,既保证了工程质量,又降低了成本。

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