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Impact of Pressure-Relief Borehole on Stability of Deep Roadway and Determination of Drillings Parameters
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Xueqing WANG1, Shuaijun WU1, Hongping TANG2, Bo CHEN1
Mining and Metallurgical Engineering | 2023, 43(3) : 1 - 5
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Mining and Metallurgical Engineering | 2023, 43(3): 1-5
• MINING •
Impact of Pressure-Relief Borehole on Stability of Deep Roadway and Determination of Drillings Parameters
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Xueqing WANG1, Shuaijun WU1, Hongping TANG2, Bo CHEN1
Affiliations
  • 1.School of Mechanics & Civil Engineering, China University of Mining & Technology(Beijing, Beijing 100083, China
  • 2.State Key Laboratory of Exploitation and Utilization of Deep Sea Mineral Resources, Changsha 410012, Hunan, China
Published: 2023-06-01 doi: 10.3969/j.issn.0253-6099.2023.03.001
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The impact of large-diameter pressure-relief borehole arrangement and drilling parameters on roadway stability was studied. It is found that arrangement of boreholes in a two-row pattern, compared to boreholes in a single-row pattern, can benefit stress shift and control of roadway deformation. By adopting the arrangement of boreholes in a single-row pattern and a two-row pattern, the deformation at both sides was reduced by 6.05% and 15.44% respectively, and the original maximum stress was reduced from 39.61 MPa to 33.50 MPa and 32.70 MPa respectively. It is also found that boreholes should be arranged, as much as possible, near the center of two sides, penetrating the plastic zone to the place with the maximum stress. And the spacing between boreholes should be determined based on the horizontal distance of the plastic zone of boreholes, and the burden spacing should be less than the height of stress-relaxed zone.

deep roadway  /  roadway surrounding rock  /  pressure-relief borehole  /  surrounding rock control  /  stress shift  /  numerical simulation  /  roadway deformation  /  pressure relief for roadway
Xueqing WANG, Shuaijun WU, Hongping TANG, Bo CHEN. Impact of Pressure-Relief Borehole on Stability of Deep Roadway and Determination of Drillings Parameters[J]. Mining and Metallurgical Engineering, 2023 , 43 (3) : 1 -5 . DOI: 10.3969/j.issn.0253-6099.2023.03.001
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Year 2023 volume 43 Issue 3
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Article Info
doi: 10.3969/j.issn.0253-6099.2023.03.001
  • Receive Date：2022-12-06
  • Online Date：2026-03-05
  • Published：2023-06-01
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  • Received：2022-12-06
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Affiliations
    1.School of Mechanics & Civil Engineering, China University of Mining & Technology(Beijing, Beijing 100083, China
    2.State Key Laboratory of Exploitation and Utilization of Deep Sea Mineral Resources, Changsha 410012, Hunan, China
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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
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