| 煤层深孔聚能爆破致裂增透机理研究 |
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| 引用本文： | 郭德勇,裴海波,宋建成,秦法秋,刘祥兵.煤层深孔聚能爆破致裂增透机理研究[J].煤炭学报,2008,33(12):1381-1385. |
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| 作者姓名： | 郭德勇 裴海波 宋建成 秦法秋 刘祥兵 |
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| 作者单位： | 中国矿业大学（北京）资源与安全工程学院，北京，100083 |
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| 基金项目： | 国家自然科学基金资助项目(40772098);;教育部新世纪优秀人才资助项目(NECT-05-0214) |
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| 摘 要： | 针对高瓦斯低透气性煤层钻孔瓦斯抽放效率低的问题，以郑州煤炭工业（集团）有限责任公司大平煤矿为例，提出了煤层深孔聚能爆破致裂增透方法.利用爆破特殊装药结构积聚爆炸能量，驱使聚能罩侵彻煤体形成初始裂隙，并在爆生气体的二次驱动下扩大煤体断裂带范围.现场爆破试验及瓦斯抽放效果证明，煤层深孔聚能爆破裂隙有效影响半径为5~6 m,钻孔瓦斯抽放浓度平均提高200%~300%.
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| 关 键 词： | 聚能爆破 爆破致裂 裂隙 煤层透气性 |
Study on spliting mechanism of coal bed deep-hole cumulative blasting to improve permeability |
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| GUO De-yong,PEI Hai-bo,SONG Jian-cheng,QIN Fa-qiu,LIU Xiang-bing.Study on spliting mechanism of coal bed deep-hole cumulative blasting to improve permeability[J].Journal of China Coal Society,2008,33(12):1381-1385. |
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| Authors: | GUO De-yong PEI Hai-bo SONG Jian-cheng QIN Fa-qiu LIU Xiang-bing |
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| Affiliation: | School of Resource and Safety Engineering, China University of Mining and Technology(Beijing), Beijing ，100083,China |
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| Abstract: | Based on the low borehole gas drainage rate in high gas seam with low permeability, deep hole cumulative blast cracking technology in coal bed was presented to improve the permeability. Denotation products and shaped covers with high kinetic energy penetrated coal seam under special charge structure, and subsequent fracturing progress by denotation gas enlarged the fracture range. The cumulative blasting is applied in Daping Coal Mine in the result of improving the gas concentration by 200%~300% equally with 5~6 m effective influencing fracuture radius. |
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| Keywords: | cumulative blasting blast cracking fracture coal seam permeability |
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