| 岩石中浅孔爆破特性的数值模拟 |
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| 引用本文： | 李云,刘霁. 岩石中浅孔爆破特性的数值模拟[J]. 中南大学学报(自然科学版), 2012, 43(4): 1519-1522 |
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| 作者姓名： | 李云 刘霁 |
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| 作者单位： | 湖南城市学院土木工程学院,湖南益阳,413000 |
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| 基金项目： | 湖南省科技计划项目(2011SK3128) |
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| 摘 要： | 采用某工程现场岩石力学、爆破参数,建立柱状装药、微差爆破数值计算模型,研究岩石中浅孔爆破应力特征和速度变化规律,考虑介质的重力、分段爆破影响.研究结果表明:最大主应力在几何形状变化处最大；有效应力最大值出现在距离爆源最近处；速度计算结果与现场爆破振动速度监测结果相吻合.
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| 关 键 词： | 岩石 浅孔爆破 爆破特性 数值模拟 |
Numerical simulation on mechanical properties of shallow-hole blasting in rocks |
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| LI Yun , LIU Ji. Numerical simulation on mechanical properties of shallow-hole blasting in rocks[J]. Journal of Central South University:Science and Technology, 2012, 43(4): 1519-1522 |
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| Authors: | LI Yun LIU Ji |
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| Affiliation: | (College of Civil Engineering,Hunan City University,Yiyang 413000,China) |
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| Abstract: | Using the rock mechanics and blasting parameters in a certain field engineering,the numerical calculation model of cylindrical charge and segmented blasting was built,and the stress features and velocity laws in the shallow-hole blasting were researched.The factors of gravity for the medium and sub-blasting effect were considered.The results show that the effective stresses of geometry shape diversification are maximum,and the maximum principal stresses of the nearest station from the explosion source are maximum.The computation velocities are in good agreement with those obtained by monitoring vibration. |
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| Keywords: | rocks shallow-hole blasting blasting properties numerical simulation |
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