| 爆炸荷载作用下裂隙岩体内损伤范围的观测研究 |
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| 引用本文： | 夏红兵,徐颖,宗琦,傅菊根.爆炸荷载作用下裂隙岩体内损伤范围的观测研究[J].岩土力学,2007,28(4):795-798. |
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| 作者姓名： | 夏红兵 徐颖 宗琦 傅菊根 |
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| 作者单位： | 1. 中国科学技术大学,合豝,230026;安徽理工大学土木工程系,淮南,232001
2. 安徽理工大学土木工程系,淮南,232001 |
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| 基金项目： | 教育部跨世纪优秀人才培养计划;教育部科学技术研究重点项目;安徽省自然科学基金 |
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| 摘 要： | 通过电法CT成像技术，探测微量炸药爆炸前后裂隙岩体深孔之间电阻率的变化，查明探测切面内的岩体损伤裂隙发育形态和空间展布。通过实验可知：微量炸药爆炸后在裂隙岩体的炮孔深部可以形成一定范围、一定数量和一定宽度的裂隙，其中裂隙形成的区域主要集中在炮孔口深的2／3处，当炮孔深度3m，装药量为330g时，在眼深1．5～2．5m处裂隙较为发育，炮孔间距为1．2m～1．5m时，可在岩体内部形成贯通裂隙。
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| 关 键 词： | 电法CT成像 微量炸药 爆破损伤 裂隙扩展 |
| 文章编号： | 1000-7598-（2007）04-0795-04 |
| 收稿时间： | 2005-05-13 |
| 修稿时间： | 2005-05-13 |
Observation study of fissure rock damage range under blasting load |
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| XIA Hong-bing,XU Ying,ZONG Qi,FU Ju-gen.Observation study of fissure rock damage range under blasting load[J].Rock and Soil Mechanics,2007,28(4):795-798. |
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| Authors: | XIA Hong-bing XU Ying ZONG Qi FU Ju-gen |
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| Institution: | 1. University of Science and Technology of China, Hefei 230026, China; 2. Dept. of Civil Engineering, Anhui University of Science and Technology, Huainan 232001, China |
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| Abstract: | Detecing the changes of resistivity in deep holes of fissure rock before and after micro explosive blasting to the limestone in Luyuan Mountain Villa with electrical CT image, a certain range, number and width fissures could develop in deep blasting holes after micro explosive blasting, and areas which were caused by fissures mainly located at about 2/3 depth of the bottom of the blasting holes.when the depth of blasting hole is 3 m, and the explosive weighted 330g ,fissures developed easily at the depth of 1.5-2.5 m of the blasting hole.when the distance between the blasting holes is 1.2-1.5 m, penetration fissures could form in the internal rock, providing scientific basis for blasting engineering design and construction. |
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| Keywords: | electrical CT image projectile filling blasting damage fissure developing |
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