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Mechanism and Prevention of Bottom Heave in Large Cross-section Inclined Shaft Roadways in Swelling Soft Rocks
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Zhuo-yue DENG1, Qin-jie LIU2, 3, *, Wen-hao TANG1, Xing-rui BAO1, Ya-xin XIU1
Science Technology and Engineering | 2025, 25(11) : 4489 - 4495
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Science Technology and Engineering | 2025, 25(11): 4489-4495
• Papers·Agricultural Science •
Mechanism and Prevention of Bottom Heave in Large Cross-section Inclined Shaft Roadways in Swelling Soft Rocks
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Zhuo-yue DENG1, Qin-jie LIU2, 3, *, Wen-hao TANG1, Xing-rui BAO1, Ya-xin XIU1
Affiliations
  • 1 School of Mining Engineering, Anhui University of Science and Technology, Huainan 232001, China
  • 2 Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230031, China
  • 3 Anhui Engineering Research Center of Exploitation and Utilization of Closed/Abandoned Mine Resources, Huainan 232001, China
Published: 2025-04-18 doi: 10.12404/j.issn.1671-1815.2403671
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To investigate the mechanisms of floor heave and support methods for large-section inclined shafts in highly expansive and weak rock, a case study was conducted on the main inclined shaft of a mine in the Yaojie Coal and Electricity Group. Through field surveys and laboratory tests, characteristics such as low rock mass strength, poor integrity, high clay content, and softening and swelling upon water exposure were identified. A Flac3D numerical model was established to simulate the deformation patterns of the tunnel under actual engineering conditions, elucidating the mechanisms of floor heave deformation in large-section soft rock inclined shafts. Three optimized prevention strategies were summarized, and an optimized support scheme of “inverse floor arch and anchor cable” was proposed based on the original support design. Field measurement data indicated that the optimized support scheme significantly improved the floor heave control in soft rock tunnels, enhanced the bearing capacity of the surrounding rock, reduced floor heave deformation, and achieved stability control of the tunnel surrounding rock. This provides an important reference for the control of floor heave in large-section shallow soft rock inclined shafts.

highly expansive rock  /  floor heave  /  numerical simulation  /  inverse floor arch
Zhuo-yue DENG, Qin-jie LIU, Wen-hao TANG, Xing-rui BAO, Ya-xin XIU. Mechanism and Prevention of Bottom Heave in Large Cross-section Inclined Shaft Roadways in Swelling Soft Rocks[J]. Science Technology and Engineering, 2025 , 25 (11) : 4489 -4495 . DOI: 10.12404/j.issn.1671-1815.2403671
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Year 2025 volume 25 Issue 11
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Article Info
doi: 10.12404/j.issn.1671-1815.2403671
  • Receive Date：2024-05-17
  • Online Date：2025-07-09
  • Published：2025-04-18
Article Data
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History
  • Received：2024-05-17
  • Revised：2024-08-10
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Affiliations
    1 School of Mining Engineering, Anhui University of Science and Technology, Huainan 232001, China
    2 Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230031, China
    3 Anhui Engineering Research Center of Exploitation and Utilization of Closed/Abandoned Mine Resources, Huainan 232001, 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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