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[1]齐庆杰,赵尤信,周新华,等.装药位置对深孔聚能爆破数值模拟与应用研究[J].中国安全生产科学技术,2018,14(11):33-38.[doi:10.11731/j.issn.1673-193x.2018.11.005]
 QI Qingjie,ZHAO Youxin,ZHOU Xinhua,et al.Study on numerical simulation and application of deephole cumulative blasting under effect of charging positions[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(11):33-38.[doi:10.11731/j.issn.1673-193x.2018.11.005]
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装药位置对深孔聚能爆破数值模拟与应用研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
14
期数:
2018年11期
页码:
33-38
栏目:
学术论著
出版日期:
2018-11-30

文章信息/Info

Title:
Study on numerical simulation and application of deephole cumulative blasting under effect of charging positions
文章编号:
1673-193X(2018)-11-0033-06
作者:
齐庆杰12赵尤信12周新华12沈志远12贾新雷12
(1.辽宁工程技术大学 安全科学与工程学院,辽宁 阜新 123000;2.矿山热动力灾害与防治教育部重点实验室,辽宁 阜新 123000)
Author(s):
QI Qingjie12 ZHAO Youxin12 ZHOU Xinhua12 SHEN Zhiyuan12 JIA Xinlei12
(1. College of Safety Science and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China;2. Key Laboratory of Mine Thermodynamic Disasters & Control of Ministry of Education, Fuxin Liaoning 123000, China)
关键词:
深孔聚能爆破不同装药位置数值模拟应力分析裂隙发育抽采效果
Keywords:
deephole cumulative blasting different charging positions numerical simulation stress analysis fracture development drainage effect
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2018.11.005
文献标志码:
A
摘要:
为研究不同装药位置对深部聚能爆破增透的效果,构建了不同装药位置的数值模型,运用理论分析、数值模拟和现场应用相结合的方法,分析了深孔聚能爆破不同装药位置周围的应力分布和裂隙发育状态,开展工程试验考察了周围抽采钻孔瓦斯浓度和瓦斯纯量的变化。研究结果表明:不同装药位置相比,中端装药时爆破有效影响范围较大、应力作用时间较长,里端装药时较小,外端装药时最小;聚能爆破中端装药,其爆轰波和应力波作用于煤体的时间较长且应力值更大,爆破产生的裂隙深度主要在轴向上加深,轴向裂隙和径向裂隙比其他装药方式均有增加;爆炸产生的爆生气体与空气波二次作用产生反射波,延长了作用时间,有助于裂隙扩展,加速了赋存瓦斯解吸和流动,爆破效果更好;深部聚能爆破中部装药能够有效地提高煤层的透气性和瓦斯抽采率。
Abstract:
In order to study the effect of different charging positions on the permeability improvement of deephole cumulative blasting, a numerical model of different charging positions was constructed. Based on the combination of theoretical analysis, numerical simulation and field application,, the stress distribution and fissure development around different charging positions of the deephole cumulative blasting were analyzed, and the engineering tests were carried out to investigate the change of gas concentration and gas pure quantity in the surrounding drainage boreholes. The results showed that under different charging positions, the effective influence range of blasting under the middle end charging was larger with a longer action time of stress, those under the inner end charging were smaller, and those under the outer end charging were the smallest. For the middle end charging of cumulative blasting, the action time of detonation wave and stress wave on the coal body was longer with a larger stress value, the fissure depth generated by the blasting mainly deepened on the axial direction, and both the axial fissure and radial fissure increased compared with other charging ways. The blasting gas generated by the blasting had a secondary action with the air wave and generated the reflected wave, which prolonged the action time, helped the expand of fissure, and accelerated the desorption and flow of the occurrence gas, so the blasting effect was better. The charging at the middle part in the deephole cumulative blasting can effectively improve the gas permeability and gas drainage rate of the coal seam.

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相似文献/References:

备注/Memo

备注/Memo:
收稿日期: 2018-09-26;数字出版日期:2018-11-23
基金项目: 国家自然科学基金项目 (51704147);辽宁省教育厅科学研究一般项目(LJYL005)
作者简介: 齐庆杰,博士,教授,主要研究方向为矿井灾害防治、洁净煤燃烧技术等。
通信作者: 赵尤信,博士研究生,主要研究方向为矿井灾害防治。
更新日期/Last Update: 2018-12-03