张建华,梁伟韬,黄刚,郝成磊

• 1:武汉理工大学资源与环境工程学院
• 2:易普力-武汉理工绿色与智慧矿山联合研发中心
• 3:北方爆破科技有限公司

摘要(Abstract)：

针对矿山预裂爆破尚无专用炸药，常用的32 mm成品乳化炸药爆速过高且威力过大的问题，提出通过减小炸药直径来降低其爆速与威力的施工方法。基于临界直径理论，采用数值模拟与试验验证相结合的分析方法:通过LS-DYNA软件建立PVC管装药三维模型，结合点火增长反应速率方程和流固耦合算法模拟爆轰波的传播过程，根据爆轰曲线判定炸药是否稳定爆轰;使用BSS-1型智能十段爆速仪对不同直径乳化炸药进行爆速现场实测，根据测得的爆速确定乳化炸药的临界直径。结果表明模拟与实验数据基本吻合:炸药直径14 mm时可实现稳定爆轰，12 mm时爆轰中断，临界直径位于12～14 mm区间，直径14 mm以上时，爆速随直径增大而递增。本研究通过数值模拟与现场试验相互印证，确定了矿山用成品乳化炸药的临界直径范围，为其预裂爆破参数优化与安全控制提供了数据支撑。

关键词(KeyWords)： 乳化炸药;爆轰特性;临界直径;爆速;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年项目(No.52109165)~~

作者(Author): 张建华,梁伟韬,黄刚,郝成磊

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