| 岩石中柱状装药爆炸能量分布 |
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| 引用本文： | 吴亮,卢文波,宗琦.岩石中柱状装药爆炸能量分布[J].岩土力学,2006,27(5):735-739. |
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| 作者姓名： | 吴亮 卢文波 宗琦 |
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| 作者单位： | 1. 武汉大学,水资源与水电工程科学国家重点实验室,武汉,430072
2. 安徽理工大学 土木工程系,淮南,232001 |
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| 基金项目： | 国家高技术研究发展计划(863计划);教育部优秀青年教师资助计划 |
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| 摘 要： | 岩石中装药爆炸产生的爆破能量可分为爆炸冲击波能量和爆生气体膨胀能量。对爆炸能量分布的理论分析有助于改善爆破效果，提高爆破质量。在柱状耦合装药情况下，分析了冲击波作用下岩石变形和破坏的特点、爆生气体对爆腔的扩腔作用，考虑了在岩体的损伤情况下爆生气体对裂纹的驱裂作用。计算结果表明：埋深在临界深度以下时，岩石中柱状装药爆破冲击波做功消耗的能量约占爆炸总能量的40 %，剩余爆生气体能量中用于扩腔和扩展主要裂隙的能量约占总能量的23 %，剩余大约37 %的能量中有小部分能量用于新增裂纹数目，而大部分损失掉了。
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| 关 键 词： | 岩石爆破 柱状装药 爆炸能量 冲击波 |
| 文章编号： | 1000-7598-（2006）05-0735-05 |
| 收稿时间： | 2004-08-23 |
| 修稿时间： | 2004-12-27 |
Distribution of explosive energy consumed by column charge in rock |
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| WU Liang,LU Wen-bo,ZONG Qi.Distribution of explosive energy consumed by column charge in rock[J].Rock and Soil Mechanics,2006,27(5):735-739. |
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| Authors: | WU Liang LU Wen-bo ZONG Qi |
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| Institution: | 1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 2.Department of Civil Engineering, Anhui University of Science and Technology, Huainan 232001, China |
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| Abstract: | The explosive energy of charge in rock is composed of shock wave energy and gaseous explosive energy. Analysis of the distribution of explosive energy can help to improve the blasting effect and blasting performance. During coupling column blasting, the features of deformation and destruction of rock by shock wave, the explosion of cavity by detonation gas, and moving of cracks by the detonation gas with considering advance damage are analyzed. The result calculated for several rocks shows that the shock wave energy consumed makes up about 40% of the total energy of the charge. The energy consumption in the course of the oayity and main cracks expansion accounts for about 23% of the total blasting energy. The spare energy among which most is consumed to increase the amount of cracks is lost. |
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| Keywords: | rock blasting column charge explosion energy shock wave |
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