Home Journals Articles Updates About
CN
image
收藏切换
Study on Deep Hole Loosening and Pre-Splitting Blasting Technology for Hard Rock Fault in Protective Layer Working Face
收藏切换
Zhanbiao YANG1, 2, Chengyang SHEN2, Shoude DUAN1, Xufeng WANG2, 3, 4, Xibing WANG2, Xin WANG2, Changxiong XIE2
Mining Research and Development | 2025, 45(2) : 97 - 105
Less
收藏切换
Mining Research and Development | 2025, 45(2): 97-105
Study on Deep Hole Loosening and Pre-Splitting Blasting Technology for Hard Rock Fault in Protective Layer Working Face
Full
Zhanbiao YANG1, 2, Chengyang SHEN2, Shoude DUAN1, Xufeng WANG2, 3, 4, Xibing WANG2, Xin WANG2, Changxiong XIE2
Affiliations
  • 1.Pingdingshan Tianan Coal Mining Co., Ltd., Pingdingshan, Henan 467000, China
  • 2.School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
  • 3.Jiangsu Engineering Laboratory of Mine Earthquake Monitoring and Prevention, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
  • 4.State Key Laboratory of Coking Coal Resources Green Exploitation, China Pingmei Shenma Group Co., Ltd., Pingdingshan, Henan 467000, China
Published: 2025-02-25
Outline
收藏切换

In the process of protective layer mining, hard rock faults and hard nodules are often encountered, which causes that it is difficult for the shearer to cut, the cutting parts are seriously worn, and the advancing speed of the working face is seriously restricted. In order to solve the above problems, based on the engineering background of Ji15−17−13070 soft rock protective layer working face in Pingmei Thirteenth Mine, the mechanism of ultra-deep hole loose pre-splitting blasting was clarified. The radius range of the fracture zone in the fault hard rock was calculated to be 0.7−1.2 m. The influences of aperture and hole spacing on blasting effect were studied by numerical simulation method, and aperture and hole spacing were determined to be 94 mm and 2.0 m respectively. The technical scheme of “advance drilling in two roadways+ ultra-deep hole loose pre-splitting blasting in working face”, which can realize the parallel operation of propulsion and blasting, was put forward and the industrial test was carried out. The test results show that after adopting the technical scheme, the fault hard rock is fully broken, the wear of the shearer pick is reduced by more than 40%, the advancing speed of the working face is increased by about 25%, and the blasting pre-splitting effect is remarkable.

Protective layer mining  /  Hard rock fault  /  Deep hole blasting  /  Numerical simulation
杨战标, 申成杨, 段守德, 王旭锋, 王袭冰, 王鑫, 谢昌雄. 保护层工作面过硬岩断层超深孔松动预裂爆破技术研究. 矿业研究与开发, 2025 , 45 (2) : 97 -105 .
Zhanbiao YANG, Chengyang SHEN, Shoude DUAN, Xufeng WANG, Xibing WANG, Xin WANG, Changxiong XIE. Study on Deep Hole Loosening and Pre-Splitting Blasting Technology for Hard Rock Fault in Protective Layer Working Face[J]. Mining Research and Development, 2025 , 45 (2) : 97 -105 .
Appendix
Less
Year 2025 volume 45 Issue 2
68
26
Cite this Article
BibTeX
Article Info
  • Receive Date：2024-03-28
  • Online Date：2026-10-29
  • Published：2025-02-25
Article Data
Affiliations
History
  • Received：2024-03-28
Affiliations
    1.Pingdingshan Tianan Coal Mining Co., Ltd., Pingdingshan, Henan 467000, China
    2.School of Mines, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
    3.Jiangsu Engineering Laboratory of Mine Earthquake Monitoring and Prevention, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
    4.State Key Laboratory of Coking Coal Resources Green Exploitation, China Pingmei Shenma Group Co., Ltd., Pingdingshan, Henan 467000, China
References
Share
https://castjournals.cast.org.cn/joweb/kyyjykf/EN/
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House