基于不同空气间隔装药结构的爆破效果动力响应研究  

Research on dynamic response of blasting effect based on different air-deck charge structures

作　　者：梁瑞[1] 解丽娜 周文海 陈必港 LIANC Rui1, XIE Lina1, ZHOU Wenhai1, CHEN Bigang2(1. School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou Gansu 730050, China; 2. Fujian Provincial Institute of Transportation Science and Technology, Fuzhou Fujian 350116, Chin)

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050 [2]福建省交通科学技术研究所,福建福州350116

出　　处：《中国安全生产科学技术》2018年第7期175-180,共6页Journal of Safety Science and Technology

基　　金：国家自然科学基金项目(51076061);甘肃省自然基金项目(B061709);甘肃省自然科学基金项目(1610RJZA029)

摘　　要：研究了不同空气间隔装药结构对光面爆破效果的影响,利用ANSYS/LS-DYNA动力分析软件建立实体模型,对5种不同空气间隔装药结构进行数值模拟,并对应力云图及有效应力时程曲线比较分析。研究结果表明:数值计算结果和模拟结果基本吻合,下部装药结构孔口应力集中,基本不采用;短进尺掘进宜采用上部空气间隔装药;中等长度掘进宜采用中部空气间隔装药;在不拒爆条件下长进尺掘进宜采用分段空气间隔装药或小药卷直径装药。The influence of different air-deck charge structures on the smooth blasting effect was studied. A solid model was established by using the ANSYS/LS-DYNA dynamic analysis software,then the numerical simulation was carried out on five different air-deck charge structures,and the stress cloud maps and the effective stress time-history curves were analyzed and compared. The results showed that the results of numerical calculation were basically consistent with the simulation results.The lower charge structure should not be adopted basically due to the stress concentration in the orifice. The upper air-deck charge was preferred for the short footage excavation,the middle air-deck charge was preferred for the medium-length excavation,and the divided air-deck charge or small cartridge diameter charge was preferred for the long footage excavation under the non-misfire condition.

关 键 词：空气间隔 孔壁压力 有限元分析 装药结构 有效应力时程曲线 

分 类 号：X936[环境科学与工程—安全科学] TU45[建筑科学—岩土工程]