王涛,任高峰,汪祯,康普林,王其洲,赵明生

• 1:武汉理工大学资源与环境工程学院
• 2:宏大爆破工程集团有限责任公司

摘要(Abstract)：

为了揭示压渣爆破中爆速与填塞长度对爆破效果的影响机制，优化爆破参数设计，提升炸药能量利用效率与作业安全性。通过建立模糊数学-熵权-层次分析体系，分析出符合现场施工要求的最优爆速、填塞长度区间;借助离散元软件PFC构建压渣爆破力学模型，分析不同爆速与填塞长度组合下的应力波传播、裂隙扩展及能量传递规律，通过现场实时采集爆破振动参数、岩体破碎块度分布、爆堆形态特征等核心技术指标，与模拟结果的对比分析，验证最优参数区间的工程适配性及数值模拟结果的准确性与可信度。结果表明:压渣爆破下现场混装乳化炸药爆速存在最优区间，位于4500 m/s左右时与花岗岩较为匹配，爆速过低炸药能量释放不足导致大块率升高，爆速过高则因应力波峰值压力高导致粉矿率升高;填塞长度与台阶高度存在临界匹配关系，填塞长度为台阶高度20%～26%时，可平衡上下部破碎效果;通过采取针对性技术措施、推行精细化爆破施工，合理调整炸药爆速与填塞长度，可有效改善台阶爆破在既有孔网参数下爆破效果。研究明确了爆速-填塞长度的耦合作用机制，为露天矿山压渣爆破参数优化提供理论依据与工程参考。

关键词(KeyWords)： 露天矿山;压渣爆破;数值模拟;岩体损伤

Abstract:

Keywords:

基金项目(Foundation): 非煤露天矿山安全智能开采国家矿山安全监察局重点实验室重点专项课题(项目编号:2024-K09)非煤露天矿山节理化高陡边坡爆破累积损伤特性及缓冲减损机理;; 国家自然科学基金(52174087)~~

作者(Author): 王涛,任高峰,汪祯,康普林,王其洲,赵明生

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