Skip to main content
SpringerLink
Log in

Investigation of key techniques on floor roadway support under the impacts of superimposed mining: theoretical analysis and field study

  • Original Article
  • Published:
Environmental Earth Sciences Aims and scope Submit manuscript

Abstract

Various sizes of coal pillars will be formed after the mining of close-distance coal seams. The concentrated stress formed on the coal pillars can cause serious deformation and failure to the roadway below (floor roadway). Wantian coal mine in Guizhou was taken as an example to study the stress propagation and distribution of roadway by Kirsch equations. Based on the stope condition, a numerical model was established to analyze the changes of stress, displacement, and plastic zones around roadways, and the cause for roadway deformation during the mining of the upper coal seams. The new support scheme was designed and applied at the study site. The results show that the vertical stress, the maximum shear stress, and the plastic zones of the rock surrounding the roadway increase with the mining of the upper working faces. Roadway deformation and failure mainly occurs at floor, sides, and corners. The key of roadway support was to control floor heave, and then to recover the integrity and strength of the surrounding rock of two sides. The developed omnidirectional rotatable drilling equipment can guarantee the success rate of floor drilling. The broken surrounding rock of floor was enhanced through grouting. The high prestress cable was used to support the roof and two sides, and the birdcage cable was for the floor. By the new support system, the roadway deformation was controlled, which could meet the support requirements.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15
Fig. 16
Fig. 17
Fig. 18
Fig. 19
Fig. 20
Fig. 21

Similar content being viewed by others

References

  • Ao X, Wang X, Zhu X et al (2016) Grouting simulation and stability analysis of coal mine goaf considering hydromechanical coupling. J Comput Civil Eng 31(3):04016069

    Article  Google Scholar 

  • Bell FG, Jermy CA (2002) A geomechanical survey of some different facies in relation to stability at a mine in the Eastern Transvaal Coalfield, South Africa. Eng Geol 64(1):19–39

    Article  Google Scholar 

  • Brady BHG, Brown ET (2004) Rock mechanics for underground mining. Kluwer Academic Publishers, London

    Google Scholar 

  • Chen S, Wu A, Wang Y et al (2018) Study on repair control technology of soft surrounding rock roadway and its application. Eng Fail Anal 92:443–455

    Article  Google Scholar 

  • Ghasemi E, Shahriar K (2012) A new coal pillars design method in order to enhance safety of the retreat mining in room and pillar mines. Safety Sci 50(3):579–585

    Article  Google Scholar 

  • Gong P, Ma Z, Ni X et al (2017) Floor heave mechanism of gob-side entry retaining with fully-mechanized backfilling mining. Energies 10(12):2085

    Article  Google Scholar 

  • Guo G, Kang H, Qian D et al (2018) Mechanism for controlling floor heave of mining roadways using reinforcing roof and sidewalls in underground coal mine. Sustainability 10(5):1413

    Article  Google Scholar 

  • Horyl P, Šňupárek R (2012) Reinforcing measures of steel roadway support in rockburst prone areas/Wzmacnianie stalowych obudów chodnikowych w obszarach zagrożonych tąpnięciami. Arch Min Sci 57(1):193–208

    Google Scholar 

  • Hou CJ (2017) Key technologies for surrounding rock control in deep roadway. J Chin Univ Min Technol 46(5):970–978

    Google Scholar 

  • Islam MR, Shinjo R (2009) Mining-induced fault reactivation associated with the main conveyor belt roadway and safety of the Barapukuria Coal Mine in Bangladesh: constraints from BEM simulations. Int J Coal Geol 79(4):115–130

    Article  Google Scholar 

  • Jiang YD, Zhao YX, Liu WG et al (2004) Research on floor heave of roadway in deep mining. Chin J Rock Mech Eng 23(14):2396–2401

    Google Scholar 

  • Jiang B, Wang L, Lu Y et al (2015) Failure mechanism analysis and support design for deep composite soft rock roadway: a case study of the Yangcheng coal mine in China. Shock Vib 2015(3)

  • Kang HP (2014) Support technologies for deep and complex roadways in underground coal mines: a review. Int J Coal Sci Technol 1(3):261–277

    Article  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 

  • Kang Y, Liu Q, Gong G, Wang H (2014) Application of a combined support system to the weak floor reinforcement in deep underground coal mine. Int J Rock Mech Min 71:143–150

    Article  Google Scholar 

  • Kang HP, Wang JH, Lin J (2011) Reinforcement technique and its application in complicated roadways in underground coal mines. J Eng Mater 117(3):255–259

    Google Scholar 

  • Khalymendyk I, Baryshnikov IA (2018) The mechanism of roadway deformation in conditions of laminated rocks. J Sustain Min 17(2):41–47

    Article  Google Scholar 

  • Li Q, Shi W, Qin Z (2016) Effect of bolting on roadway support in extremely weak rock. Springerplus 5(1):1355

    Article  Google Scholar 

  • Liu X, Li X, Pan W (2016) Analysis on the floor stress distribution and roadway position in the close distance coal seams. Arab J Geosci 9(2):83

    Article  Google Scholar 

  • Liu J, Wang E, Song D et al (2015) Effect of rock strength on failure mode and mechanical behavior of composite samples. Arab J Geosci 8(7):4527–4539

    Article  Google Scholar 

  • Ma ZQ, Jiang YD, Liu Y et al (2018) Investigation on support pattern of a coal mine roadway under dynamic pressure of mining-a case study. Int J Oil Gas Coal T 18(3–4):402–422

    Article  Google Scholar 

  • Majcherczyk T, Niedbalski Z, Małkowski P et al (2014) Analysis of yielding steel arch support with rock bolts in mine roadways stability aspect. Arch Min Sci 59(3):641–654

    Google Scholar 

  • Nierobisz A (2012) Investigation of mine roadway support load during seismic events. J Min Sci 48(2):298–307

    Article  Google Scholar 

  • Pan R, Wang Q, Jiang B et al (2017) Failure of bolt support and experimental study on the parameters of bolt-grouting for supporting the roadways in deep coal seam. Eng Fail Anal 80:218–233

    Article  Google Scholar 

  • Qian D, Zhang N, Pan D et al (2017a) Stability of deep underground openings through large fault zones in argillaceous rock. Sustainability 9(12):2153

    Article  Google Scholar 

  • Qian D, Zhang N, Zhang M et al (2017b) Application and evaluation of ground surface pre-grouting reinforcement for 800-m-deep underground opening through large fault zones. Arab J Geosci 10(13):285

    Article  Google Scholar 

  • Shimada H, Hamanaka A, Sasaoka T et al (2014) Behaviour of grouting material used for floor reinforcement in underground mines. Int J Min Reclam Environ 28(2):133–148

    Article  Google Scholar 

  • Singh R, Mandal PK, Singh AK et al (2011) Coal pillar extraction at deep cover: with special reference to Indian coalfields. Int J Coal Geol 86(2):276–288

    Article  Google Scholar 

  • Wang WJ, Hou CJ, Bai JB et al (2001) Mechanical deformation analysis and principle of floor heave of roadway driving gob in fully mechanized sub-level caving face. Rock Soil Mech 22(3):319–322

    Google Scholar 

  • Wang C, Wang Y, Lu S (2000) Deformational behaviour of roadways in soft rocks in underground coal mines and principles for stability control. Int J Rock Mech Min 37(6):937–946

    Article  Google Scholar 

  • Yang SQ, Chen M, Jing HW et al (2017b) A case study on large deformation failure mechanism of deep soft rock roadway in Xin'An coal mine, China. Eng Geol 217:89–101

    Article  Google Scholar 

  • Yang R, Li Q, Li Q et al (2017a) Assessment of bearing capacity and stiffness in new steel sets used for roadway support in coal mines. Energies 10(10):1581

    Article  Google Scholar 

  • Yu Y, Deng KZ, Chen SE (2018) Mine size effects on coal pillar stress and their application for partial extraction. Sustainability 10(3):792

    Article  Google Scholar 

  • Yuan L, Gao ZN, Meng XR (2013) Viscoelastic analysis of stress concentration coefficient in rectangular roadway based on complex variable function. Saf Coal Mine 44(2):196–203

    Google Scholar 

  • Zhang M, Shimada H, Sasaoka T et al (2014) Evolution and effect of the stress concentration and rock failure in the deep multi-seam coal mining. Environ Earth Sci 72:629–643

    Article  Google Scholar 

  • Zhang Z, Shimada H, Sasaoka T et al (2017) Stability control of retained goaf-side gateroad under different roof conditions in deep underground Y type longwall mining. Sustainability 9(10):1671

    Article  Google Scholar 

  • Zhang Z, Shimada H, Sciubba E (2018) Numerical study on the effectiveness of grouting reinforcement on the large heaving floor of the deep retained goaf-side gateroad: a case study in China. Energies 11(4):1001

    Article  Google Scholar 

  • Zheng X, Feng X, Zhang N et al (2014) Serial decoupling of bolts in coal mine roadway supports. Arab J Geosci 8(9):1–14

    Google Scholar 

  • Zhu W, Xu J, Li Y (2017) Mechanism of the dynamic pressure caused by the instability of upper chamber coal pillars in Shendong coalfield, China. Geosci J 21(5):1–13

    Article  Google Scholar 

Download references

Acknowledgements

This work is supported by the National Natural Science Foundation of China (51764010, 51874109), the Science and Technology Support Plan of Guizhou Province (Science Support of Guizhou Province [2019] 2861), and the Science and Technology Project for Outstanding and Young Talents of Guizhou (Talents of Science Platform in Guizhou [2019] 5655).

Author information

Authors and Affiliations

  1. Institute of Mining Engineering, Guizhou Institute of Technology, Guiyang, 550003, Guizhou, China

    Youlin Xu

  2. State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400030, China

    Kairui Pan

  3. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, 454000, Henan, China

    Hui Zhang

Authors
  1. Youlin Xu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Kairui Pan
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Hui Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Hui Zhang.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Xu, Y., Pan, K. & Zhang, H. Investigation of key techniques on floor roadway support under the impacts of superimposed mining: theoretical analysis and field study. Environ Earth Sci 78, 436 (2019). https://doi.org/10.1007/s12665-019-8431-9

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s12665-019-8431-9

Keywords

Search

Navigation