| 预裂爆破成缝机制及其影响因素的探讨 |
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| 引用本文： | 唐海,梁开水,游钦峰. 预裂爆破成缝机制及其影响因素的探讨[J]. 爆破, 2010, 27(3): 41-44. DOI: 10.3963/j.issn.1001-487X.2010.03.011 |
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| 作者姓名： | 唐海 梁开水 游钦峰 |
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| 作者单位： | 湖南科技大学,煤矿安全开采技术湖南省重点实验室,湘潭,411201;武汉理工大学,资源与环境工程学院,武汉,430070;四川省泸州市徐永鑫福煤业有限公司,后山煤矿,泸州,646415 |
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| 基金项目： | 湖南省教育厅资助科研项目 |
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| 摘 要： | 通过对预裂爆破成缝理论及岩石断裂模型的探讨,并结合断裂力学和损伤力学的有关理论,从岩石爆生裂缝的成缝机理上分析了裂缝的起裂方位、起裂条件、裂缝扩展与止裂.同时,从炸药性质、装药结构、炮孔间距、岩石物理力学性质、地质条件、孔径和岩体初始应力等方面的因素探讨了其对岩石预裂爆破成缝的影响.
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| 关 键 词： | 预裂爆破 裂缝 成缝机理 影响因素 |
Discussion on Mechanism and Effect Factors of Cracks Resulted from Pre-splitting Blasting |
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| TANG Hai,LIANG Kai-shui,You qin-feng. Discussion on Mechanism and Effect Factors of Cracks Resulted from Pre-splitting Blasting[J]. Blasting, 2010, 27(3): 41-44. DOI: 10.3963/j.issn.1001-487X.2010.03.011 |
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| Authors: | TANG Hai LIANG Kai-shui You qin-feng |
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| Affiliation: | TANG Hai1,LIANG Kai-shui2,You qin-feng3(1.Hunan University of Science , Technology,Hunan Provincial Key Laboratory of Safe MiningTechniques of Coal Mines,Xiangtan 411201,China,2.School of Resources , Environmental Engineering,Wuhan University of Technology,Wuhan 430070,3.Houshan coal mine of Sichuan Luzhou Xuyong Xinfu coal industry Co Ltd,Luzhou 646415,China) |
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| Abstract: | The paper discusses on the theory of cracks resulted from pre-splitting blasting and fracture model of rock.Using theory of Fracture Mechanics and Damage Mechanics,the paper also analyses orientation,beginning,widening and ceasing of crack caused in the process of blasting,from mechanism of blast-induced cracks in rock.And the major factors which effect development of cracks resulted from pre-splitting blasting are studied,from characteristics of detonator,charging construction,interval of holes,physical an... |
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| Keywords: | pre-splitting blasting crack cracking mechanism effect factors |
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