Deep-hole water injection technology of strong impact tendency coal seam—a case study in Tangkou coal mine

  • Zhigang LiuEmail author
  • Anye CaoEmail author
  • Xiaosheng Guo
  • Jinxiu Li
Original Paper


The implementation of coal-seam water injection can change the physical and mechanical properties of coal, can improve the coal storage limit, prevent and control rock burst, prevent coal and gas outburst, and reduce dust concentration in underground operations. However, there are still many shortcomings such as the poor sealing effect and the lack of coal seam permeability. In order to study coal softening through water injection and its effect of reducing the coal’s impact tendency, we examine the impact tendency, coal seam injection, water injection additive, water injection hole sealing, and coal seam stress-relief effect of coal seam on LW5304 experimentally and through engineering application. The results show that this method can be used to reduce the coal’s impact tendency, if the samples are soaked. Triton X-100 additive can effectively reduce the polarity of water and the surface tension, while improving the coupling effect of water and coal and the wettability of coal. The “pure polyurethane + cement slurry + cement mortar” sealing process can be used to avoid water injection leaking. The water content of LW5304 coal seam is 3.2~4.2% after water injection, and the average increase of moisture content is 1~2.5%. In addition, the number of coal-stress early warning is reduced, and micro-seismic monitoring shows that the average energy is reduced as well. Therefore, water injection in coal seam is considered a good method for relieving stress.


Coal seam water infusion Water injection additive Stress relief of water injection Water injection parameters Rock burst 


Funding information

We gratefully acknowledge the financial support for this work provided by the Fundamental Research Funds for the Central Universities [No. 2017XKQY046] and the Project of PADD funded by the Priority Academic Programme Development of Jiangsu Higher Education Instruction [No. SZBF2011-6-B35].


  1. Cai W, Dou LM, Cao AY, Gong SY, Li ZL (2014) Application of seismic velocity tomography in underground coal mines: a case study of Yima mining area Henan China. J Appl Geophys 109:140–149. CrossRefGoogle Scholar
  2. Cao AY, Dou LM, Cai W, Gong SY, Liu S, Jing GH (2015) Case study of seismic hazard assessment in underground coal mining using passive tomography. Int J Rock Mech Min Sci 78:1–9Google Scholar
  3. He J, Dou LM, Gong SY, Li J, Ma ZQ (2017) Rock burst assessment and prediction by dynamic and static stress analysis based on micro-seismic monitoring. Int J Rock Mech Min Sci 93:46–53. Google Scholar
  4. He MC, Nie W, Han LQ, Ling LJ (2010) Microcrack analysis of Sanya grantite fragments from rockburst tests. Int J Min Sci Technol 20:238–243Google Scholar
  5. Hu GZ, Xu JL, Ren T, Dong YW, Qin W, Shan ZJ (2014) Field investigation of using water injection through inseam gas drainage boreholes to control coal dust from the longwall face during the influence of abutment pressure. Int J Min Reclam Environ 30:1–16Google Scholar
  6. Huang, Z.A., Zhang, E.M., Zhang, Y.H., and Gao, Y.K., 2010, Development of a new hole packer used for both gas drainage and coal seam water infusion, Proceedings of the 4th International Conference on Bioinformatics and Biomedical Engineering, June 18–20, 7, pp. 1–5Google Scholar
  7. Jiang FX, Wang B, Zhai MH, Guo XS, Huang GW, Huang JR (2015) Field tests on fixed-point hydraulic fracture with extra-high pressure in coal seam for rock burst prevention. Chin J Geotech Eng 37:526–531 (in Chinese with English abstract)Google Scholar
  8. Li JB, Chen XX, Wang XM (2012) Mechanism analysis on concentrated stress in front of mining face moving forward occurred by water injection in seam. Coal Sci Technol 4:56–59 (in Chinese with English abstract)Google Scholar
  9. Li J, Zhou F, Liu H (2015) The selection and application of a compound wetting agent to the coal seam water infusion for dust control. Int J Coal Prep Util 36:192–206CrossRefGoogle Scholar
  10. Liu ZG, Cao AY, Zhu GA, Wang CB (2017) Numerical simulation and engineering practice for optimal parameters of deep-hole blasting in sidewalls of roadway. Arab J Sci Eng 42(9):3809–3818. CrossRefGoogle Scholar
  11. Lu Y, Zuo SG, Ge ZL, Xiao SQ, Cheng YG (2016) Experimental study of crack initiation and extension induced by hydraulic fracturing in a tree-type borehole array. Energies 9(7):514. CrossRefGoogle Scholar
  12. Mazaira A, Konicek P (2015) Intense rockburst impacts in deep underground construction and their prevention. Can Geotech J 52(10):1426–1439. CrossRefGoogle Scholar
  13. Manshad AK, Nowrouzi I, Mohammadi AH (2017) Effects of water soluble ions on wettability alteration and contact angle in smart and carbonated smart water injection process in oil reservoirs. J Mol Liq 244:440–452. CrossRefGoogle Scholar
  14. Qin WG, Zhang YS (2000) Relation of pore distribution of coal with water infusion increment in seams. J China Coal Soc 5:514–517 (in Chinese with English abstract)Google Scholar
  15. Wold MB, Connell LD, Choi SK (2008) The role of spatial variability in coal seam parameters on gas outburst behaviour during coal mining. Int J Coal Geol 75(1):1–14. CrossRefGoogle Scholar
  16. Xiao ZG, Wang ZF (2009) Status and progress of studies on mechanism of preventing coal and gas outburst by coal seam infusion. China Saf Sci J 10:150–158 (in Chinese with English abstract)Google Scholar
  17. Xu J, Jiang JD, Xu N, Liu QS, Gao YF (2017) A new energy index for evaluating the tendency of rockburst and its engineering application. Eng Geol 230:46–54. CrossRefGoogle Scholar
  18. Yan P, Zhao ZG, Lu WB, Fan Y, Chen XR, Shan ZG (2015) Mitigation of rock burst events by blasting techniques during deep-tunnel excavation. Eng Geol 188:126–136. CrossRefGoogle Scholar
  19. Zhang MT, Song WY, Pan YS (2003) Study on water pouring into coal seam to prevent rock-burst. China Saf Sci J 10:73–76 (in Chinese with English abstract)Google Scholar
  20. Zhang ZB, Wang EY, Li N (2017) Temporal and spatial characteristics of coal-mine microseism based on single-link cluster. Geosci J 2:1–11Google Scholar
  21. Zhou AT, Wang LP, Kiryaeva TA (2017a) Gas-solid coupling laws for deep high-gas coal seams. Int J Min Sci Technol 27(4):675–679. CrossRefGoogle Scholar
  22. Zhou, G., Yu, Y., Wen, J., Nie, W., and Wang, H., 2015, Numerical simulation of seepage pressure field of coal seam water-injection in high and low pressure with one-way and bi-directional drilling holes. Proceedings of the 5th International Conference on Industrial Electronics and Engineering, October 25–27, 47(4), p. 155–162Google Scholar
  23. Zhou PL, Zhang YH, Huang ZA, Gao YK, Wang H, Luo Q (2017b) Coal and gas outburst prevention using new high water content cement slurry for injection into the coal seam. Int J Min Sci Technol 27(4):669–673. CrossRefGoogle Scholar
  24. Zhou XH, Xu K, Qi QJ, Wu X (2014) Fuzzy clustering analysis and application of the degree of difficulty of coal seam water injection. Adv Mater Res 962–965:939–945CrossRefGoogle Scholar

Copyright information

© Saudi Society for Geosciences 2018

Authors and Affiliations

  1. 1.Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of MinesChina University of Mining and TechnologyXuzhouChina
  2. 2.Shandong Tangkou Coal Mining Co., LtdJiningChina
  3. 3.Shandong College of Mining TechnicalZiboChina

Personalised recommendations