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[1]潘泱波,刘泽功.含硬夹矸高瓦斯低透气性煤层多向聚能爆破技术研究[J].中国安全生产科学技术,2019,15(11):144-150.[doi:10.11731/j.issn.1673-193x.2019.11.023]
　PAN Yangbo,LIU Zegong.Study on multidirection shaped charge blasting technology for coal seam containing hard dirt band with high gas and low permeability[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(11):144-150.[doi:10.11731/j.issn.1673-193x.2019.11.023]
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含硬夹矸高瓦斯低透气性煤层多向聚能爆破技术研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年11期
页码:
144-150
栏目:
职业安全卫生管理与技术
出版日期:
2019-11-30

文章信息/Info

Title:
Study on multidirection shaped charge blasting technology for coal seam containing hard dirt band with high gas and low permeability
文章编号:
1673-193X(2019)-11-0144-07
作者:
潘泱波; 刘泽功
（1.安徽理工大学 能源与安全学院，安徽 淮南 232001；
2.安徽理工大学 煤矿安全高效开采省部共建教育部重点实验室，安徽 淮南 232001）
Author(s):
PAN Yangbo;  LIU Zegong
(1.School of Energy and Safety,Anhui University of Science and Technology,Huainan Anhui 232001,China;
2.Key Laboratory of Safety and HighEfficiency Mining of Ministry of Education,Huainan Anhui 232001,China)
关键词:
夹矸弱化; 煤层增透; 多向聚能爆破; 相似模拟; 数值模拟
Keywords:
dirt band weakening;  permeability enhancement of coal seam;  multidirection shaped charge blasting;  similar simulation;  numerical simulation
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2019.11.023
文献标志码:
A
摘要:
针对在含硬夹矸高瓦斯低透气性煤层开采时，一方面煤层瓦斯抽采困难，另一方面煤层中的坚硬夹矸难破碎的问题，开展含硬夹矸高瓦斯低透气性煤层多向聚能爆破研究。理论上，分析多向聚能装药对爆破的影响，引入多向聚能影响系数，计算得出了不同方向上裂隙的范围。通过相似模拟试验，验证了多向聚能爆破实际效果；利用LS-DYNA数值模拟软件，对不同装药方式爆破作用下煤与夹矸裂隙的发育特征及应力演化规律进行了数值模拟研究。研究结果表明：多向聚能爆破能够将爆破能量积聚在夹矸弱化和煤层增透的方向上，形成以导向裂隙为主，大量分支裂隙为辅的裂隙网，在夹矸弱化和煤层增透方向上的应力峰值分别为普通爆破的1.21倍和1.16倍。多向聚能爆破能够在提高破碎坚硬夹矸能力的同时提升煤体中裂隙的发育程度，从而大幅优化爆破效果。
Abstract:
In view of the difficulty of gas extraction in the coal seam on the one hand and the difficulty of crushing the hard dirt band in the coal seam on the other hand when mining in the coal seam containing hard dirt band with high gas and low permeability,the multidirection shaped charge blasting for this kind of coal seam was studied.In theory,the influence of multidirection shaped charge on the blasting was analyzed,then the influence coefficient of multidirection shaped charge was introduced,and the ranges of cracks in different directions were calculated.The actual effect of multidirection shaped charge blasting was verified by the similar simulation tests.The development characteristics of crack in the coal and dirt band and the stress evolution laws under the blasting effect of different charging modes were studied by using the LS-DYNA numerical simulation software.The results showed that the multidirection shaped charge blasting could accumulate the blasting energy in the directions of dirt band weakening and permeability enhancement of coal seam,and the crack network with the directional cracks as primary and large amount of branch cracks as supplement formed.The peak stress in the directions of dirt band weakening and permeability enhancement of coal seam was 1.21 and 1.16 times of that in the ordinary blasting respectively.The multidirection shaped charge blasting can not only improve the ability of crushing hard dirt band,but also improve the development degree of cracks in coal,thus optimize the blasting effect greatly.

参考文献/References:

［1］李以虎.承压水上含硬夹矸薄煤层工作面高产高效技术研究与应用［D］.青岛：山东科技大学,2011.
［2］袁亮.我国深部煤与瓦斯共采战略思考［J］.煤炭学报,2016,41(1):1-6. YUAN Liang.Strategic thinking of simultaneous exploitation of coal and gas in deep mining ［J］.Journal of China Coal Society,2016,41(1):1-6.
［3］袁亮,薛俊华.低透气性煤层群无煤柱煤与瓦斯共采关键技术［J］.煤炭科学技术,2013,41(1):5-11. YUAN Liang,XUE Junhua.Key technology of pillarless coal and gas simultaneous mining in low permeability seam group ［J］.Coal Science and Technology,2013,41(1):5-11.
［4］刘健.低透气煤层深孔预裂爆破增透技术研究及应用［D］.淮南：安徽理工大学,2008.
［5］刘健,刘泽功，高魁，等.深孔预裂爆破在深井高瓦斯低透气性煤层瓦斯抽采中的应用［J］.中国安全生产科学技术,2014,10(5):148-153. LIU Jian,LIU Zegong,GAO Kui，et al.Application of deep hole pre-splitting blasting to gas drainage at deep well and low permeability coal seam ［J］.Journal of Safety Science and Technology,2014,10(5):148-153.
［6］黄文尧,颜事龙，刘泽功，等.煤矿瓦斯抽采水胶药柱在煤层深孔爆破中的研究与应用［J］.煤炭学报,2012,37(3):472-476. HUANG Wenyao,YAN Shilong,LIU Zegong，et al.Research and application of water gel explosive grain on coal mine gas extraction in coal seam deep hole blasting ［J］.Journal of China Coal Society,2012,37(3):472-476.
［7］穆朝民,王海露，黄文尧，等.高瓦斯低透气性煤体定向聚能爆破增透机制［J］.岩土力学,2013,34(9):2496-2500. MU Chaomin,WANG Hailu,HUANG Wenyao，et al.Increasing permeability mechanism using directional cumulative blasting in coal seams with high concentration of gas and low permeability ［J］.Rock and Soil Mechanics,2013,34(9):2496-2500.
［8］吕鹏飞.聚能爆破煤体增透及裂隙生成机理研究［D］.北京：中国矿业大学（北京）,2014.
［9］吕鹏飞,豆孝星，朱同功，等.煤层深孔聚能爆破增透技术的应用［J］.煤炭科学技术,2013,41(12):35-38. LYU Pengfei,DOU Xiaoxing,ZHU Tonggong，et al.Application on permeability improved technology with deep borehole energy accumulation blasting in coal seam ［J］.Coal Science and Technology,2013,41(12):35-38.
［10］郭德勇,吕鹏飞，裴海波，等.煤层深孔聚能爆破裂隙扩展数值模拟［J］.煤炭学报,2012,37(2):274-278. GUO Deyong,LYU Pengfei,PEI Haibo，et al.Numerical simulation on crack propagation of coal bed deep-hole cumulative blasting ［J］.Journal of China Coal Society,2012,37(2):274-278.
［11］罗勇,沈兆武，崔晓荣，等.多面聚能线性切割器的研究［J］.爆破,2006,23(2):93-96，101. LUO Yong,SHEN Zhaowu,CUI Xiaorong，et al.Application of multiple linear cavity effect cutter ［J］.Blasting,2006,23(2):93-96，101.
［12］任广学,邵鹏，蔚立元，等.多向聚能爆破爆破漏斗实验研究［J］.工程爆破,2012,18(2):1-4，21. REN Guangxue,SHAO Peng,WEI Liyuan，et al.Experimental study on crater of multi-direction shaped charge blasting ［J］.Engineering Blasting,2012,18(2):1-4，21.
［13］郭德勇,裴海波，宋建成，等.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. GUO Deyong,PEI Haibo,SONG Jiancheng，et al.Study on splitting mechanism of coal bed deep-hole cumulative blasting to improve permeability ［J］.Journal of China Coal Society,2008,33(12):1381-1385.
［14］袁绍国，等.控制爆破理论与实践［M］.天津：天津大学出版社,2007:112-122.
［15］戴俊.岩石动力学特性与爆破理论(第2版) ［M］.北京：冶金工业出版社,2014:143-148.

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备注/Memo

备注/Memo:
收稿日期： 2019-08-27
* 基金项目： 国家自然科学基金项目(51474009，51604010，51674009)；安徽省自然科学基金项目(1708085QE111)
作者简介： 潘泱波，博士研究生，主要研究方向为矿井灾害与瓦斯防治。
更新日期/Last Update: 2019-12-25