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Numerical Simulation Study on Abutment Pressure and Energy Evolution of Super-Thick and Hard Strata Stope
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Bin XU1, Yan ZHANG1, Boyu LUAN1, Beibei LI2, Guangmin WANG3
Mining Research and Development | 2025, 45(3) : 101 - 110
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Mining Research and Development | 2025, 45(3): 101-110
Numerical Simulation Study on Abutment Pressure and Energy Evolution of Super-Thick and Hard Strata Stope
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Bin XU1, Yan ZHANG1, Boyu LUAN1, Beibei LI2, Guangmin WANG3
Affiliations
  • 1.Mining Engineering Research Institute, Shandong University of Science and Technology, Taian, Shandong 271000, China
  • 2.Shandong Energy Group Luxi Mining Co., Ltd., Heze, Shandong 274700, China
  • 3.Yankuang Group Coal Mine Rock Burst Research Center, Jining, Shandong 273599, China
Published: 2025-03-25
Outline
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In order to reveal the influences of super-thick and hard strata on abutment pressure and the evolution law of energy distribution in stope, a typical mining area of Yangliu Coal Mine was taken as the research object, and the variation law of abutment pressure and energy evolution process were simulated by numerical simulation method. The results are concluded as follows. (1) When there are super-thick and hard strata in the overlying strata, the advance abutment pressure in the middle and both sides of the working face is increased by about 9% and 5% respectively compared with that without super-thick and hard strata. This shows that when there are super-thick and hard strata in the overlying strata, the middle and both sides of the stope are in a high stress state for a long time. When the stope is disturbed by external force, it is more likely to lead to the occurrence of dynamic disasters such as mine earthquake and rock burst. (2) When there are super-thick and hard strata in the overlying strata, the change curve of the advance abutment pressure of the stope shows a cliff-like decline after breaking. When there are no super-thick and hard strata in the overlying strata, the change curve of the advance abutment pressure of the stope is gentler than that of the former. (3) With the continuous advancement of the working face distance, the peak value of the abutment pressure of the free side is increased by 3.60 MPa and 3.39 MPa respectively compared with the peak value of the abutment pressure of the mining side when there are or are not super-thick and hard strata in the overlying strata. The change trend of the side abutment pressure of the two is basically the same, but the side abutment pressure of the free side of the roadway is obviously larger than the lateral abutment pressure of the mining side of the roadway. This shows that the existence of super-thick and hard strata makes the stress concentration, roadway mining will be more prone to damage. (4) The super-thick and hard strata will cause great impact on the stope after breaking. Compared with the stope without super-thick and hard strata, the damage degree is more severe, the elastic energy released is more, and the influence range is more extensive.

Super-thick and hard stratum  /  Abutment pressure  /  Energy distribution  /  Numerical simulation
许斌, 张沿, 栾博宇, 李贝贝, 王光民. 巨厚坚硬岩层采场支承压力与能量演化数值模拟研究. 矿业研究与开发, 2025 , 45 (3) : 101 -110 .
Bin XU, Yan ZHANG, Boyu LUAN, Beibei LI, Guangmin WANG. Numerical Simulation Study on Abutment Pressure and Energy Evolution of Super-Thick and Hard Strata Stope[J]. Mining Research and Development, 2025 , 45 (3) : 101 -110 .
Year 2025 volume 45 Issue 3
72
38
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Article Info
  • Receive Date:2024-04-24
  • Online Date:2026-10-29
  • Published:2025-03-25
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  • Received:2024-04-24
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Affiliations
    1.Mining Engineering Research Institute, Shandong University of Science and Technology, Taian, Shandong 271000, China
    2.Shandong Energy Group Luxi Mining Co., Ltd., Heze, Shandong 274700, China
    3.Yankuang Group Coal Mine Rock Burst Research Center, Jining, Shandong 273599, China
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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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