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TheAnalysis bearing mechanism inclinedBearing mechanism wall rock-bolled abutment is a new type of support structure for underground space lifting systems, characterized by superior safety performance, flexible layout forms, and high economic benefits. By relying on 2–4 long inclined rock boltsRock-bolted abutment, the reinforced concreteConcrete abutment is anchored into stable rock masses, enabling the abutment, rock bolts, and rock mass to work together to bear the upper loads. Four auxiliary rock boltsRock-bolted abutment are arranged vertically at the contact surface, which can further enhance the shear resistance and overall stabilityStability of the structure. Analysis results show that with the increase of upper loads, the inclined wall rock-bolled abutment exhibits a progressive failure evolution pattern including contact surface strength failure, yielding of load-bearing rock boltsRock-bolted abutment, and instability of elastic rock foundations. Under specific conditions, by appropriately applying inclined load-bearing rock bolts and auxiliary rock boltsRock-bolted abutment, the load-bearing limit of a single inclined wall rock-bolled abutment structure can reach over 500 kN.

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Analysis on Bearing Mechanism of Inclined Wall Rock- Bolled Abutment Structures in Underground Powerhouses

  • 会议论文

  • 发表日期：

    2026年

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  • Feng Wang,
  • Ke Lu,
  • Hao Fang,
  • Fengwei Wu,
  • Xiaomu Liao,
  • Xingtao Ren,
  • Xinxing Chen

摘要

TheAnalysis bearing mechanism inclinedBearing mechanism wall rock-bolled abutment is a new type of support structure for underground space lifting systems, characterized by superior safety performance, flexible layout forms, and high economic benefits. By relying on 2–4 long inclined rock boltsRock-bolted abutment, the reinforced concreteConcrete abutment is anchored into stable rock masses, enabling the abutment, rock bolts, and rock mass to work together to bear the upper loads. Four auxiliary rock boltsRock-bolted abutment are arranged vertically at the contact surface, which can further enhance the shear resistance and overall stabilityStability of the structure. Analysis results show that with the increase of upper loads, the inclined wall rock-bolled abutment exhibits a progressive failure evolution pattern including contact surface strength failure, yielding of load-bearing rock boltsRock-bolted abutment, and instability of elastic rock foundations. Under specific conditions, by appropriately applying inclined load-bearing rock bolts and auxiliary rock boltsRock-bolted abutment, the load-bearing limit of a single inclined wall rock-bolled abutment structure can reach over 500 kN.