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Study on the Stress Distribution and Stability Control of Surrounding Rock of Reserved Roadway with Hard Roof

Author

Listed:
  • Yuxi Hao

    (School of Architectural Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China)

  • Mingliang Li

    (School of Architectural Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China)

  • Wen Wang

    (College of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China)

  • Zhizeng Zhang

    (School of Architectural Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China)

  • Zhun Li

    (School of Architectural Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China)

Abstract

According to field observation and theoretical analysis, the failure of the 1523103 reserved roadway is mainly affected by the lateral support pressure, rock mass strength, and support mode. With the mining of the 152309 working face, the lateral pressure of coal pillars on both sides of the reserved roadway increases, and since the lithology of the two sides and the floor of the roadway is weak, the reserved roadway experiences spalling and floor heave. Through numerical simulation, the distribution law of surrounding rock stress and the displacement of surrounding rock are obtained after the roof cutting and pressure relief of the reserved roadway with hard roof. According to the cause of surrounding rock failure of a reserved roadway, the combined control technology of roof cutting and pressure relief, grouting anchor cable support, and bolt support is put forward. After cutting the roof and releasing the pressure on the working face, the lateral support pressure of the two sides of the roadway is significantly reduced, the deformation of the two sides of the roadway is small, the maximum shrinkage rate of the section is reduced from 70% to 11%, and the deformation of the surrounding rock of the 1523103 reserved roadway is effectively controlled. The successful control of the surrounding rock in the 1523103 tunnel reduces the number of coal pillars to be installed, improves the coal extraction rate, and is conducive to the sustainable utilization of limited natural resources and the sustainable development of the coal industry.

Suggested Citation

  • Yuxi Hao & Mingliang Li & Wen Wang & Zhizeng Zhang & Zhun Li, 2023. "Study on the Stress Distribution and Stability Control of Surrounding Rock of Reserved Roadway with Hard Roof," Sustainability, MDPI, vol. 15(19), pages 1-21, September.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:19:p:14111-:d:1246299
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    References listed on IDEAS

    as
    1. Xizhan Yue & Min Tu & Yingfu Li & Guanfeng Chang & Chen Li, 2022. "Stability and Cementation of the Surrounding Rock in Roof-Cutting and Pressure-Relief Entry under Mining Influence," Energies, MDPI, vol. 15(3), pages 1-18, January.
    2. Hiroto Hashikawa & Pisith Mao & Takashi Sasaoka & Akihiro Hamanaka & Hideki Shimada & Ulaankhuu Batsaikhan & Jiro Oya, 2022. "Numerical Simulation on Pillar Design for Longwall Mining under Weak Immediate Roof and Floor Strata in Indonesia," Sustainability, MDPI, vol. 14(24), pages 1-13, December.
    3. Shengrong Xie & Hui Li & Dongdong Chen & Shaohua Feng & Xiang Ma & Zaisheng Jiang & Junqi Cui, 2022. "New Technology of Pressure Relief Control in Soft Coal Roadways with Deep, Violent Mining and Large Deformation: A Key Study," Energies, MDPI, vol. 15(23), pages 1-26, December.
    4. Dong Xu & Mingshi Gao & Xin Yu, 2022. "Dynamic Response Characteristics of Roadway Surrounding Rock and the Support System and Rock Burst Prevention Technology for Coal Mines," Energies, MDPI, vol. 15(22), pages 1-17, November.
    5. Dongdong Qin & Xufeng Wang & Dongsheng Zhang & Xuyang Chen, 2019. "Study on Surrounding Rock-Bearing Structure and Associated Control Mechanism of Deep Soft Rock Roadway Under Dynamic Pressure," Sustainability, MDPI, vol. 11(7), pages 1-15, March.
    6. Houqiang Yang & Nong Zhang & Changliang Han & Changlun Sun & Guanghui Song & Yuantian Sun & Kai Sun, 2021. "Stability Control of Deep Coal Roadway under the Pressure Relief Effect of Adjacent Roadway with Large Deformation: A Case Study," Sustainability, MDPI, vol. 13(8), pages 1-14, April.
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