Geomechanics and Engineering

  • 제18권4호
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  • Pages.439-448
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  • 2019
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Cooperative bearing behaviors of roadside support and surrounding rocks along gob-side

  • Tan, Yunliang (State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology) ;
  • Ma, Qing (College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Zhao, Zenghui (State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology) ;
  • Gu, Qingheng (College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Fan, Deyuan (College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Song, Shilin (College of Mining and Safety Engineering, Shandong University of Science and Technology) ;
  • Huang, Dongmei (State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology)
  • 투고 : 2018.11.17
  • 심사 : 2019.07.08
  • 발행 : 2019.07.20
⟨ 이전 논문 다음 논문 ⟩

초록

The bearing capacity of roadside support is the key problem in gob-side entry retaining technology. To study the cooperative bearing characteristics of the roof-roadside support-floor along the gob-side entry retaining, a mechanical model of the composite structure of the roof-roadside support-floor was first established. A method for determining the structural parameters of gob-side entry retaining was then proposed. Based on this model, adaptability analysis of roadside support was carried out. The results showed that the reasonable width of the gob-side entry roadway was inversely proportional to the mining height, and directly proportional to the bearing strength of the roof and floor. And the reasonable width of the "flexible-hard" roadside support was directly proportional to its own strength, and inversely proportional to the width of the gob-side entry retaining. When determining the position and size of the roadside support along the gob-side entry retaining, the surrounding rock environment should be fully considered. Measured results from case study also show the rationality of the model and calculation method.

키워드

과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, Shandong Province Natural Science Foundation, China Postdoctoral Science Foundation

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  2. Deviation Effect of Coaxiality on the Rock Brazilian Split vol.2020, 2019, https://doi.org/10.1155/2020/5782457
  3. Study on Failure Modes and Energy Evolution of Coal-Rock Combination under Cyclic Loading vol.2020, 2019, https://doi.org/10.1155/2020/5731721
  4. A caving self-stabilization bearing structure of advancing cutting roof for gob-side entry retaining with hard roof stratum vol.21, pp.1, 2019, https://doi.org/10.12989/gae.2020.21.1.023
  5. Analysis of Stress Removal Effect of Borehole Depth and Position on Coal-Rock with Shock Tendency vol.38, pp.4, 2020, https://doi.org/10.1007/s10706-020-01281-x
  6. Study on the Development Height of Overburden Water-Flowing Fracture Zone of the Working Face vol.2021, 2019, https://doi.org/10.1155/2021/5570884
  7. Effects of interface angles on properties of rock-cemented coal gangue-fly ash backfill bi-materials vol.24, pp.1, 2021, https://doi.org/10.12989/gae.2021.24.1.081