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Laboratory and field investigations of different bolting configurations for coal mine roadways in weak coal strata

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Abstract

The underground mining roadways are composed of different strata in southern China mining areas. In the rock-coal composite roadways (RCCRs), surrounding rock comprises coal seam and other strata, such as sandstone, mudstone and siltstone. In this paper, a systematic laboratory experimental study was carried out in which uniaxial compressive strength test was used to investigate the reinforcement of fabricated rock-coal composite (RCC) specimens possessing different anchoring (bolting) setups: no bolt, one horizontal bolt in the coal, two horizontal bolts in the coal and one horizontal bolt in the coal together with an inclined bolt crossing the coal-rock interface. The results show that the failure of RCC specimens with no bolts initially occurs in the coal. Bolting improves the mechanical behaviour of the RCC specimens and the level of improvement is related to the number and orientation of the bolts. Using one horizontal bolt in the coal together with a 30° inclined bolt crossing the coal-rock interface results in the highest strength and the most effective reduction of differential deformation of the RCC specimens. Based on the experimental laboratory results, a field study was carried out to demonstrate further the effectiveness of the inclined bolting and anchoring crossing the coal-rock interface in the stress compression zone for restraining the uneven deformation of the RCCR.

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References

  • Chen YL, Zuo JP, Liu DJ et al (2018) Deformation failure characteristics of coal–rock combined body under uniaxial compression: experimental and numerical investigations. Bull Eng Geol Environ 78(5):3449–3464

    Article  Google Scholar 

  • Fairhurst CE, Hudson JA (1999) Draft ISRM suggested method for the complete stress-strain curve for intact rock in uniaxial compression. Int J Rock Mech Min Sci Geomech Abstr 36(3):281–289

    Google Scholar 

  • Freeman TJ (1978) The behavior of fully bonded rock bolts in the Kielder experimental tunnel. Tunn Tunn Int 10(5):37–40

    Google Scholar 

  • Gale WJ, Blackwood RL (1987) Stress distributions and rock failure around coal mine roadways. Int J Rock Mech Min Sci Geomech Abstr 24(3): 165-173

    Article  Google Scholar 

  • Gong FQ, Yan JY, Li XB et al (2019) A peak-strength strain energy storage index for bursting proneness of rock materials. Int J Rock Mech Min Sci 117:76–89

    Article  Google Scholar 

  • Gong FQ, Wu C (2020) Identifying crack compaction and crack damage stress thresholds of rock using load–unload response ratio (LURR) theory. Rock Mech Rock Eng 53:943–954

    Article  Google Scholar 

  • Grasselli G (2005) 3D behaviour of bolted rock joints: experimental and numerical study. Int J Rock Mech Min Sci 42(1), 13-24

    Article  Google Scholar 

  • ISRM (1981) Rock characterization testing and monitoring—ISRM suggested methods. Pergamon, Oxford

    Google Scholar 

  • Kang HP, Lin J, Fan MJ (2015) Investigation on support pattern of a coal mine roadway within soft rocks—a case study. Int J Coal Geol 140(1):31-40

    Article  Google Scholar 

  • Li Y, Zhou H, Zhang L, Zhu WS, Li SC, Liu J (2016) Experimental and numerical investigations on mechanical property and reinforcement effect of bolted jointed rock mass. Constr Build Mater 126:843–856

    Article  Google Scholar 

  • Li ZH, Wang EY, Ou JC, Liu ZT (2015) Hazard evaluation of coal and gas outbursts in a coal-mine roadway based on logistic regression model. Int J Rock Mech Min Sci 80:185–195

    Article  Google Scholar 

  • Lu CP, Dou LM, Liu B, Xie YS, Liu HS (2012) Microseismic low-frequency precursor effect of bursting failure of coal and rock. J Appl Geophys 79(79):55–63

    Article  Google Scholar 

  • Lu T, Zhao Z, Hu H (2011) Improving the gate road development rate and reducing outburst occurrences using the waterjet technique in high gas content outburst-prone soft coal seam. Int J Rock Mech Min Sci 48(8):1271–1282

    Article  Google Scholar 

  • Mogi K (2006) Experimental rock mechanics. Taylor & Francis, Wales

    Book  Google Scholar 

  • Özgen Karacan C (2015) Analysis of gob gas venthole production performances for strata gas control in longwall mining. Int J Rock Mech Min Sci 79:9–18

    Article  Google Scholar 

  • Pan B, Yu WJ, Shen WB (2021) Experimental study on energy evolution and failure characteristics of rock-coal-rock combination with different height ratios. Geotech Geol Eng 39:425–435

    Article  Google Scholar 

  • Petukhov IM, Linkov AM (1979) The theory of post-failure deformations and the problem of stability in rock mechanics. Int J Rock Mech Min Sci Geomech Abstr 16(2):57–76

    Article  Google Scholar 

  • Song HQ, Zuo JP, Liu HY, Zuo SH (2021) The strength characteristics and progressive failure mechanism of soft rock-coal combination samples with consideration given to interface effects. Int J Rock Mech Min Sci 138(1):104593

  • Tang CA, Yang WT, Fu YF, Xu XH (1998) A new approach to numerical method of modelling geological processes and rock engineering problems — continuum to discontinuum and linearity to nonlinearity. Eng Geol 49(3–4):207–214

    Article  Google Scholar 

  • Wang JH (2007) New development of rock bolting technology for coal roadway in China. J China Coal Soc 32(2):113-118

    Google Scholar 

  • Wang F, Tu S, Bai Q (2011) Practice and prospects of fully mechanized mining technology for thin coal seams in China. J South Afr Inst Min Metall 112(2):161–170

    Google Scholar 

  • Wang JC, Jiang FX, Meng XJ, Wang XY, Zhu ST, Feng Y (2016) Mechanism of rock burst occurrence in specially thick coal seam with rock parting. Rock Mech Rock Eng 49(5):1953–1965

    Article  Google Scholar 

  • Wang JC, Wang ZH, Yang SL (2017) A coupled macro- and meso-mechanical model for heterogeneous coal. Int J Rock Mech Min Sci 94:64–81

    Article  Google Scholar 

  • Wu GS, Yu WJ, Zuo JP, Li CY, Li JH, Du SH (2020a) Experimental investigation on rockburst behavior of the rock-coal-bolt specimen under different stress conditions. Sci Rep 10:7556

    Article  Google Scholar 

  • Wu GS, Yu WJ, Zuo JP, Du SH (2020b) Experimental and theoretical investigation on mechanisms performance of the rock-coal-bolt (RCB) composite system. Int J Min Sci Technol 30(6):759-768

    Article  Google Scholar 

  • Yin G, Li M, Wang JG, Xu J, Li W (2015) Mechanical behavior and permeability evolution of gas infiltrated coals during protective layer mining. Int J Rock Mech Min Sci 80:292–301

    Article  Google Scholar 

  • Yoon HS, Lim TK, Jeong SM, Yang KH (2020) Thermal transfer and moisture resistances of nano-aerogel-embedded foam concrete. Constr Build Mater 236:117575

  • Yu WJ, Liu FF (2018) Stability of close chambers surrounding rock in deep and comprehensive control technology. Adv Civ Eng 2018:6275941

    Google Scholar 

  • Yu WJ, Pan B, Zhang F, Yao SF, Liu FF (2019a) Deformation characteristics and determination of optimum supporting time of alteration rock mass in deep mine. KSCE J Civ Eng 23(11):4921–4932

    Article  Google Scholar 

  • Yu WJ, Wu GS, An BF, Wang P (2019b) Experimental Study on the Brittle-Ductile Response of a Heterogeneous Soft Coal Rock Mass under Multi Factors Coupling. Geofluids 2019:5316149

    Google Scholar 

  • Yu WJ, Wu GS, Pan B, Wu QH, Liao Z (2021) Experimental investigation of the mechanical properties of sandstone–coal–bolt specimens with different angles under conventional triaxial compression. Int J Geomech 21(6):04021067

    Article  Google Scholar 

  • Zhu W, Liu L, Liu J, Wei C, Peng Y (2018) Impact of gas adsorption-induced coal damage on the evolution of coal permeability. Int J Rock Mech Min Sci 101:89–97

    Article  Google Scholar 

  • Zuo JP, Wang JT, Jiang YQ (2019) Macro/meso failure behavior of surrounding rock in deep roadway and its control technology. Int J Coal Sci Technol 6(3):301–319

    Article  Google Scholar 

  • Zuo JP, Wang ZF, Zhou HW, Pei JL, Liu JF (2013) Failure behavior of a rock-coal-rock combined body with a weak coal interlayer. Int J Min Sci Technol 23(6):907–912

    Article  Google Scholar 

Download references

Acknowledgements

The authors would like to express appreciation to the editors and reviewers for their valuable comments and suggestions that helped improve the quality of the paper.

Funding

This study was supported by the National Natural Science Foundation of China (51974117; 52174076) and the Hunan Provincial Natural Science Foundation of China (2020JJ4027).

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Authors and Affiliations

  1. School of Resource & Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, China

    Weijian Yu, Bao Pan, Ke Li & Ze Liao

  2. Hunan Key Laboratory of Safe Mining Techniques of Coal Mines, Hunan University of Science and Technology, Xiangtan, 411201, Hunan, China

    Weijian Yu

  3. School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing, 100083, China

    Genshui Wu

  4. School of Energy and Mining Engineering, China University of Mining and Technology Beijing, Beijing, 100083, China

    Chunlai Wang

Authors
  1. Weijian Yu
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  2. Genshui Wu
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  3. Bao Pan
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  4. Chunlai Wang
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  5. Ke Li
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  6. Ze Liao
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Contributions

Weijian Yu: conceptualization; investigation; formal analysis; writing—original draft; writing—review editing. Genshui Wu: investigation; methodology; data curation; writing—original draft. Bao Pan: conceptualization, project administration, methodology, supervision, funding acquisition. Chunlai Wang: methodology, validation. Ke Li and Ze Liao: visualization. Genshui Wu and Weijian Yu contributed equally to this work.

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Correspondence to Genshui Wu.

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The authors declare no competing interests.

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Yu, W., Wu, G., Pan, B. et al. Laboratory and field investigations of different bolting configurations for coal mine roadways in weak coal strata. Bull Eng Geol Environ 80, 8995–9013 (2021). https://doi.org/10.1007/s10064-021-02477-y

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  • DOI: https://doi.org/10.1007/s10064-021-02477-y

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