Research on deep hole pre-splitting loosening blasting technology of hard roof cutting seam charge pack

Yin Zhongchang; Song Junsheng; Hu Shaoyin; Gao Quanchen

doi:10.19606/j.cnki.jmst.2021.06.008

Volume 6 Issue 6

Nov. 2021

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Article Navigation > Journal of Mining Science and Technology > 2021 > 6(6): 696-702

Yin Zhongchang, Song Junsheng, Hu Shaoyin, Gao Quanchen. Research on deep hole pre-splitting loosening blasting technology of hard roof cutting seam charge pack[J]. Journal of Mining Science and Technology, 2021, 6(6): 696-702. doi: 10.19606/j.cnki.jmst.2021.06.008

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Research on deep hole pre-splitting loosening blasting technology of hard roof cutting seam charge pack

doi: 10.19606/j.cnki.jmst.2021.06.008

1.
School of Mechanics and Civil Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
2.
Huaihe Energy Group Corp.Huainan Minging Corp., Huainan Anhui 232001, China

Received Date: 2021-02-10
Rev Recd Date: 2021-08-06
Publish Date: 2021-12-01

Abstract

Abstract

This research studies the key control technology in the process of hard roof loosening blasting, with Zhangji Mine of Huainan, Anhui as the background of the field test, combined with numerical simulation.Numerical simulation of the deep hole loosening blasting of the slitting charge was carried out.The field comparison test of the ordinary charge control blasting and the slitting charge was conducted.The results show that the proposed combined technology of loosening pre-splitting of ultra-deep holes in the huge and hard roof and directional fracture of the slitting charge can increase the directional expansion range of blasting cracks and solve the problem of excessively large bottom hole spacing in ultra-deep hole loosening pre-splitting blasthole blasting and so as to achieve precise control of the blasting fracture surface and the collapse position of the hard roof; artificially regulate the interval of periodic weighting, so that the hard roof can collapse in time and safely, and the working face can mine continuously and safely.
- hard roof,
- loose blasting,
- numerical simulation,
- slotted cartridge

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References

[1]	何满潮, 钱七虎. 深部岩体力学基础[M]. 北京: 科学出版社, 2010: 2-3.
[2]	何满潮, 谢和平, 彭苏萍, 等. 深部开采岩体力学研究[J]. 岩石力学与工程学报, 2005;24(16): 2803-2813. doi: 10.3321/j.issn:1000-6915.2005.16.001 He Manchao, Xie Heping, Peng Suping, et al. Study on rock mechanics in deep mining engineering[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(16): 2803-2813. doi: 10.3321/j.issn:1000-6915.2005.16.001
[3]	王明洋, 周泽平, 钱七虎. 深部岩体的构造和变形与破坏问题[J]. 岩石力学与工程学报, 2006, 25(3): 448-455. doi: 10.3321/j.issn:1000-6915.2006.03.002 Wang Mingyang, Zhou Zeping, Qian Qihu. Tectonic, deformation and failure problems of deep rock mass[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(3): 448-455. doi: 10.3321/j.issn:1000-6915.2006.03.002
[4]	王明洋, 宋华, 郑大亮, 等. 深部巷道围岩的分区破裂机制及"深部"界定探讨[J]. 岩石力学与工程学报, 2006, 25(9): 1771-1776. doi: 10.3321/j.issn:1000-6915.2006.09.006 Wang Mingyang, Song Hua, Zheng Daliang, et al. On mechanism of zonal disintegration within rock mass around deep tunnel and definition of"deep rock engineering"[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(9): 1771-1776. doi: 10.3321/j.issn:1000-6915.2006.09.006
[5]	Alber M, Heiland J. Investigation of a limestone pillar failure part 2: stress history and application of fracture mechanics approach[J]. Proceedings of the National Academy of Sciences of the United States of America, 1991, 21(3): 30-38.
[6]	Jayanthu S, Singh T N, Singh D P. Stress distribution during extraction of pillars in a thick coal seam[J]. Rock Mechanics & Rock Engineering, 2004, 37(3): 171-192. http://www.onacademic.com/detail/journal_1000034475394310_6300.html
[7]	王银涛. 坚硬顶板深孔预裂爆破技术研究及应用[D]. 太原: 太原理工大学, 2015.
[8]	刘长友, 杨敬轩, 于斌, 等. 覆岩多层坚硬顶板条件下特厚煤层综放工作面支架阻力确定[J]. 采矿与安全工程学报, 2015, 32(1): 7-13. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL201501003.htm Liu Changyou, Yang Jingxuan, Yu Bin, et al. Support resistance determination of fully mechanized top-coal caving face in extra thick seam under multi-layered hard strata[J]. Journal of Mining & Safety Engineering, 2015, 32(1): 7-13. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL201501003.htm
[9]	王朋, 赵玉成, 魏锋. 坚硬岩体双孔预裂爆破裂隙发育与弱化机理研究[J]. 煤炭技术, 2016, 35(11): 49-51. https://www.cnki.com.cn/Article/CJFDTOTAL-MTJS201611020.htm Wang Peng, Zhao Yucheng, Wei Feng. Research on twohole pre-splitting blasting weakening mechanism of hard roof[J]. Coal Technology, 2016, 35(11): 49-51. https://www.cnki.com.cn/Article/CJFDTOTAL-MTJS201611020.htm
[10]	赵英顺, 关建国. 瓦斯综合抽放技术在大黄山煤矿一号井的应用[J]. 中州煤炭, 2008(3): 111-112. doi: 10.3969/j.issn.1003-0506.2008.03.055 Zhao Yingshun, Guan Jianguo. Application of comprehensive gas drainage technology in no. 1 shaft of dahuangshan coal mine[J]. Zhongzhou Coal, 2008(3): 111-112. doi: 10.3969/j.issn.1003-0506.2008.03.055
[11]	王金国. 浅析煤矿综采工作面强制放顶时应注意的几个问题[J]. 神华科技, 2009, 7(5): 14-17. doi: 10.3969/j.issn.1674-8492.2009.05.003 Wang Jinguo. Brief analysis of the issues needing to be paid attention when forced caving of full-mechanized mining face of coal mine[J]. Energy Science and Technology, 2009, 7(5): 14-17. doi: 10.3969/j.issn.1674-8492.2009.05.003
[12]	陈兴民. 强制放顶措施在火成岩顶板工作面回采中的应用[J]. 煤矿现代化, 2006(5): 14. doi: 10.3969/j.issn.1009-0797.2006.05.011 Chen Xingmin. The application of compulsory roof caving measures in the mining face of igneous rock roof[J]. Coal Mine Modernization, 2006(5): 14. doi: 10.3969/j.issn.1009-0797.2006.05.011
[13]	杨相海, 张杰, 余学义. 强制放顶爆破参数研究[J]. 西安科技大学学报, 2010, 30(3): 287-290, 323. doi: 10.3969/j.issn.1672-9315.2010.03.007 Yang Xianghai, Zhang Jie, Yu Xueyi. Blasting parameter of compulsive roof cave-in[J]. Journal of Xi'an University of Science and Technology, 2010, 30(3): 287-290, 323. doi: 10.3969/j.issn.1672-9315.2010.03.007
[14]	姜耀东, 潘一山, 姜福兴, 等. 我国煤炭开采中的冲击地压机理和防治[J]. 煤炭学报, 2014, 39(2): 205-213. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201402001.htm Jiang Yaodong, Pan Yishan, Jiang Fuxing, et al. State of the art review on mechanism and prevention of coal bumps in China[J]. Journal of China Coal Society, 2014, 39(2): 205-213. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201402001.htm
[15]	王传兵, 丁晨曦, 张继兵. 张集煤矿北区原岩应力实测与分析[J]. 中国煤炭, 2017, 43(5): 43-46. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGME201705010.htm Wang Chuanbing, Ding Chenxi, Zhang Jibing. Field test and analysis of in-situ stress in the north district of zhangji mine[J]. China Coal, 2017, 43(5): 43-46. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGME201705010.htm
[16]	窦波洋, 宋俊生, 李学彬. 张集煤矿14131工作面合理支护强度与面长分析[J]. 煤炭技术, 2019, 38(1): 1-4. https://www.cnki.com.cn/Article/CJFDTOTAL-MTJS201901002.htm Dou Boyang, Song Junsheng, Li Xuebin. Reasonable supporting strength and face length analysis on 14131 working face in zhangji coal mine[J]. Coal Technology, 2019, 38(1): 1-4. https://www.cnki.com.cn/Article/CJFDTOTAL-MTJS201901002.htm
[17]	Fourney W J, Dally J W, Holloway D C. Fracture Plane Control with a Ligamented Split-Tube Charge[C]// The 17th U.S. Symposium on Rock Mechanics (USRMS), Snow Bird, Utah, 1976.
[18]	申涛, 和中庆, 罗宁, 等. 切缝药包爆破技术的发展、应用及作用机理探讨[J]. 煤矿爆破, 2016(4): 25-29. doi: 10.3969/j.issn.1674-3970.2016.04.008 Shen Tao, He Zhongqing, Luo Ning, et al. Development and application of split-tube charge holder blasting technology[J]. Coal Mine Blasting, 2016(4): 25-29. doi: 10.3969/j.issn.1674-3970.2016.04.008
[19]	蒲传金, 郭学彬, 张志呈, 等. 切缝药包爆破机理分析与试验研究[J]. 爆破, 2006, 23(1): 33-35, 41. doi: 10.3963/j.issn.1001-487X.2006.01.008 Pu Chuanjin, Guo Xuebin, Zhang Zhicheng, et al. Mechanism analysis of cutting seam cartridge blasting[J]. Blasting, 2006, 23(1): 33-35, 41. doi: 10.3963/j.issn.1001-487X.2006.01.008
[20]	鞠杨, 环小丰, 宋振铎, 等. 损伤围岩中爆炸应力波动的数值模拟[J]. 爆炸与冲击, 2007, 27(2): 136-142. doi: 10.3321/j.issn:1001-1455.2007.02.008 Jü Yang, Huan Xiaofeng, Song Zhenduo, et al. Numerical analyses of blast wave stress propagation and damage evolution in rock masses[J]. Explosion and Shock Waves, 2007, 27(2): 136-142. doi: 10.3321/j.issn:1001-1455.2007.02.008

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Research on deep hole pre-splitting loosening blasting technology of hard roof cutting seam charge pack

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