Skip to content Skip to sidebar Skip to footer
Home / Coal Seam Continuity Was Interpreted From Borehole to Borehole Ç…å±‚è¿žç» §

Coal Seam Continuity Was Interpreted From Borehole to Borehole Ç…å±‚è¿žç» §

Post a Comment

Abstract

To numerically investigate the stress distribution and deformation failure level of gas drainage boreholes in deep soft coal seams, ABAQUS is applied to numerical simulations based on the effective stress principle, under various conditions of compressive strengths, in-situ stresses, borehole diameters, gas pressures, and other factors. Simulation results indicate that the occurrence of vertical stress peak and position vary with the geo-stress, compressive strength of the coal mass, and gas pressure of the coal, accordingly the displacement and deformation of the borehole wall emerge. The maximum vertical stress of the coal mass is increased to 35.11 MPa while the imposed geo-stress is 25 MPa. Correspondingly, the displacement and deformation of the borehole wall reach 17.16 mm. Although the compressive strength of the coal mass increases from 2.6 to 5.2 MPa, the displacement and deformation of the borehole wall decreases from 17.3 to 5.19 mm. Nevertheless, the change in the borehole diameter will not trigger dramatic variations on the stress and deformation failure of the borehole. Research results provide theoretical support required to effectively address the stuck and collapse of long inseam boreholes while drilling in deep and soft coal seams. In addition, research results demonstrate a positive influence on the gas drainage with long and large inseam boreholes in highly gassy coal mines.

Article highlights

  • The stress distribution and deformation failure of boreholes in deep gassy coal seams have been numerically investigated on the basis of effective stress principle.

  • The occurrence position of vertical peak stress of boreholes in gassy coal seam will gradually shift away from the borehole center as the geo-stress and the gas pressure of the coal seam increase.

  • The variation of the borehole diameter negligibly influence the stability of the borehole in gassy and soft coal seams.

Access options

Buy single article

Instant access to the full article PDF.

39,95 €

Price includes VAT (Indonesia)

References

  • CAE Technical Alliance (2017) ABAQUS 2016 finite element analysis from beginner to master. Tsinghua University Press, Beijing

    Google Scholar

  • Chen Ji (2019) Simulation of coal and gas outburst process based on ABAQUS. Chongqing University, Chongqing. https://doi.org/10.27670/d.cnki.gcqdu.2019.003200

    Book  Google Scholar

  • Fan Z, Shen B-H, Hu B-N et al (2014) Coalbed methane development and technical access in china coal mining area. Coal Sci Technol 42(1):44–49, 75. https://doi.org/10.13199/j.cnki.cst.2014.01.012

    Article  Google Scholar

  • Gao F, Xue Y, Gao Y, Zhang Z, Teng T, Liang X (2016) Fully coupled thermo-hydro-mechanical model for extraction of coal seam gas with slotted boreholes. J Nat Gas Sci Eng. https://doi.org/10.1016/j.jngse.2016.03.002

    Article  Google Scholar

  • Guohui L, Jingjing C (2011) Tribological explanation of effective stress controlling shear strength of saturated geo-materials. Chin J Geotech Eng 33(10):1517–1525. https://doi.org/10.1111/j.1759-6831.2010.00113.x

    Article  Google Scholar

  • Huang C (2020) Characteristics of hole circle coal body deformation and cuttings generating in deep soft coal seam drilling. Coal Eng 52(4):92–96. https://doi.org/10.11799/ce202004018

    Article  Google Scholar

  • Jasinge D, Ranjith PG, Choi SK (2011) Effects of effective stress changes on permeability of latrobe valley brown coal. Fuel 90:1292–1300. https://doi.org/10.1016/j.fuel.2010.10.053

    Article  Google Scholar

  • Ji C, Jian K, Hao Z (2020) Finite element simulation of coal body failure in coal and gas outburst process. J Chongqing Univ 43(4):85–93. https://doi.org/10.11835/j.issn.1000-582X.2020.04.009

    Article  Google Scholar

  • Jiang B, Kong X, Luo Y (2016) ABAQUS detailed engineering examples. Posts and Telecom Press, Beijing

    Google Scholar

  • Karacan CÖ, Diamond WP, Schatzel SJ (2007) Numerical analysis of the influence of in-seam horizontal methane drainage boreholes on longwall face emission rates. Int J Coal Geol 72(1):15–32. https://doi.org/10.1016/j.coal.2006.12.007

    Article  Google Scholar

  • Li Z, Tu M, Yao X (2011) Numerical analysis of stability and hole-forming control of gas drainage borehole in deep mine. China Coal 37(03):85–89. https://doi.org/10.19880/j.cnki.ccm.2011.03.023

    Article  Google Scholar

  • Lin H, Yang Z, Fan Y (2011) Analysis and simulation on the stress field of the borehole surrounding in coal seam. J Henan Polytech Univ (natural Science) 30(02):137–144

    Google Scholar

  • Liu Z, Cheng Y, Jiang J, Li W, Jin K (2017) Interactions between coal seam gas drainage boreholes and the impact of such on borehole patterns. J Nat Gas Sci Eng 38:597–607. https://doi.org/10.1016/j.jngse.2017.01.015

    Article  Google Scholar

  • Liu P, Ju Y, Feng Z et al (2021) Characterization of hydraulic crack initiation of coal seams under the coupling effects of geostress difference and complexity of pre-existing natural fractures. Geomech Geophys Geo-Energy Geo-Resour. https://doi.org/10.1007/s40948-021-00288-9

    Article  Google Scholar

  • Liu C (2014) Study on mechanism and controlling of borehole collapse in soft coal seam. China University of Mining and Technology. https://kns.cnki.net/KCMS/detail/detail.aspx?dbname=CDFDLAST2015&filename=1015007453.nh

  • Min G, Yihua H, Desheng W, Donghai Li (2008) Numerical simulation of mechanical characteristics of deep hole presplitting blasting in soft coal bed. Chin J Rock Mech Eng 27(8):1674–1681. https://doi.org/10.1016/S1872-5791(08)60057-3

    Article  Google Scholar

  • Mingguo H, Guicheng Q, Chen J et al (2019) Deformation law of borehole under different stress state. Coal Eng 51(9):127–131. https://doi.org/10.11799/ce201909028

    Article  Google Scholar

  • Niu Y, Zhang X, Wang E, Li Z, Cheng Z, Duan X, Li H, Wei Y, Qian J, Cai G, Lin S, Li B (2020) A new method of monitoring the stability of boreholes for methane drainage from coal seams. Measurement. https://doi.org/10.1016/j.measurement.2020.107521

    Article  Google Scholar

  • Papamichos E (2010) Analysis of borehole failure modes and pore pressure effects. Comput Geo-Tech 37(1–2):141–152. https://doi.org/10.1016/j.compgeo.2009.08.006

    Article  Google Scholar

  • Qin Y, Wu J, Shen J et al (2018) Frontier research of geological technology for coal measure gas joint-mining. J China Coal Soc 43(6):1504–1516

    Google Scholar

  • Rahimi R, Nygaard R (2018) Effect of rock strength variation on the estimated borehole breakout using shear failure criteria. Geomech Geophys Geo-Energ Geo-Resour 4:369–382. https://doi.org/10.1007/s40948-018-0093-7

    Article  Google Scholar

  • Ranjith PG, Liu Y, Wei J et al (2019a) Effect of abrasive mass flow on the abrasive acceleration and erosion rates of abrasive gas jets. Rock Mech Rock Eng 52:3085–3102. https://doi.org/10.1007/s00603-019-01746-3

    Article  Google Scholar

  • Ranjith PG, Zhang CP, Zhang ZY (2019b) Experimental study of fracturing behaviour in ultralow permeability formations: a comparison between CO2 and water fracturing. Eng Fract Mech 217:106541. https://doi.org/10.1016/j.engfracmech.2019.106541

    Article  Google Scholar

  • Suian Z, Diankun Z, Chuan P, Yuan Yu (2019) Obstacles to the development of CBM industry and countermeasures in China. Nat Gas Ind 39(04):118–124. https://doi.org/10.3787/j.issn.1000-0976.2019.04.016

    Article  Google Scholar

  • Sławomir K (2009) Accumulation of coal-bed methane in the south-west part of the Upper Silesian Coal Basin (southern Poland). Int J Coal Geol 80(1):20–34. https://doi.org/10.1016/j.coal.2009.08.003

    Article  Google Scholar

  • Tezuka K, Niitsuma H (2000) Stress estimated using microseismic clusters and its relationship to the fracture system of the Hijiori hot dry rock reservoir. Eng Geol 56(1–2):47–62. https://doi.org/10.1016/s0013-7952(99)00133-7

    Article  Google Scholar

  • Thomas G (2009) Stability analysis of a horizontal coalbed methane well in the Rocky Mountain front ranges of southeast British Columbia. Can Int J Coal Geol 77(3–4):328–337. https://doi.org/10.1016/j.coal.2008.05.016

    Article  Google Scholar

  • Wei G, Men J, Jia A, Jia T (2012) Gas enrichment area identification methods by the overlying bedrock characteristic for Zhaogu No. 1 coal mine. J China Coal Soc 37(8):1315–1319

    Google Scholar

  • Weiqin Z, Yapeng B, Mingju L (2016) Space-time evolution laws of the aperture of bedding borehole under the mining stress. J Henan Polytech Univ Nat Sci 35(4):476–481. https://doi.org/10.16186/j.cnki.1673-9787.2016.04.006

    Article  Google Scholar

  • Wen G, Sun H, Cao J et al (2020) Simulation experiment system of coal and gas dynamic disaster in deep mine and its application in accident analysis. J China Coal Soc 45(1):223–231

    Google Scholar

  • Whittles DN, Lowndes IS, Kingman SW, Yates C, Jobling S (2007) The stability of methane capture boreholes around a long wall coal panel. Int J Coal Geol 71(2–3):313–328. https://doi.org/10.1016/j.coal.2006.11.004

    Article  Google Scholar

  • Xie J, Gao M, Yu B et al (2015) Coal permeability model on the effect of gas extraction within effective influence zone. Geomech Geophys Geo-Energ Geo-Resour 1:15–27. https://doi.org/10.1007/s40948-015-0002-2

    Article  Google Scholar

  • Xinfu L, Chunhua L, Guoqiang L (2019) Dynamic behavior of coalbed methane flow along the annulus of single-phase production. Int J Coal Sci Technol 6(4):547–555. https://doi.org/10.1007/s40789-019-00276-1

    Article  Google Scholar

  • Xu S (2013) Seam drilling stability analysis based on UDEC and D- P standards. Coal Saf 44(03):160–162

    Google Scholar

  • Xu H, Wang G, Yang Guo Y, Chang B, Hu Y, Fan J (2020) Theoretical, numerical, and experimental analysis of effective extraction radius of coalbed methane boreholes by a gas seepage model based on defined criteria. Energy Sci Eng 8:880–897. https://doi.org/10.1002/ese3.557

    Article  Google Scholar

  • Yang J, Lei J, Zou Y et al (2017) Preliminary analysis on initial stress balance method of composite foundation with cap pile based on ABAQUS. J Nanchang Hangkong Univ Nat Sci 31(04):73–78. https://doi.org/10.3969/j.issn.1001-4926.2017.04.012

    Article  Google Scholar

  • Yang S-Q, Ranjith PG, Jing H-W et al (2017) An experimental investigation on thermal damage and failure mechanical behavior of granite after exposure to different high temperature treatments. Geothermics 65:180–197. https://doi.org/10.1016/j.geothermics.2016.09.008

    Article  Google Scholar

  • Yi E, Zhang Y (2021) Composite hazards prevention with breaking coal seam and roof by super high pressure water jet. J China Coal Soc 46(4):1271–1279. https://doi.org/10.13225/j.cnki.jccs.DY20.0290

    MathSciNet  Article  Google Scholar

  • Yougang W, Hongyan Li, Qingxin Qi et al (2010) The evolution of permeability and gas extraction technology in mining coal seam. J China Coal Soc 35(3):406–410. https://doi.org/10.1016/S1876-3804(11)60004-9

    Article  Google Scholar

  • Zhang X, Gao J (2017) Study on deformation characteristics of drainage borehole in soft coal seam with deep mining. J Saf Sci Technol 13(08):152–158. https://doi.org/10.11731/j.issn.1673-193x.2017.08.024

    Article  Google Scholar

  • Zhang J, Li G, Meng Z et al (2020) Key technology of surface extraction for coalbed methane wells crossing goaf. J China Coal Soc 45(7):2552–2561. https://doi.org/10.13225/j.cnki.jccs.dz20.0726

    Article  Google Scholar

  • Zhou B, Hao J, Zhang C (2016) Analysis on borehole instability under coupled multiple stress and dynamic sealing technology in soft coal seam. Coal Geol Explor 44(4):161–166. https://doi.org/10.3969/j.issn.1001-1986.2016.04.031

    Article  Google Scholar

  • Zhou B, Xu J, Peng SJ et al (2020) Influence of geo-stress on dynamic response characteristics of coal and gas outburst. Rock Mech Rock Eng 53:4819–4837. https://doi.org/10.1007/s00603-020-02154-8

    Article  Google Scholar

  • Zhu L, Pan Y, Li Z, Xu L (2018) Mechanisms of rockburst and outburst compound disaster in deep mine. J China Coal Soc 43(11):3042–3050

    Google Scholar

Download references

Acknowledgements

The authors gratefully acknowledge the financial support provided by the National Natural Science Foundation of China <Grant No. 52104118>, the Natural Science Foundation of Chongqing Province, China<Grant No. cstc2019jcyj-msxmX0633>, and the Special Project funded by Chongqing Postdoctoral Science Foundation <Project No. Xm2017068>. The authors also express their deep gratitude to Prof. Hu Qianting, Li Quangui and the anonymous reviewers for their invaluable supports.

Author information

Authors and Affiliations

  1. State Key Laboratory of Coal Mine Disaster Dynamics and Control, College of Resources and Safety Engineering, Chongqing University, Chongqing, 400030, China

    He Jiangfu, He Wenchao, Zhang Chengpeng, Sun Zhongguang & Sun Xiaoyi

  2. State Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling, China Coal Technology and Engineering Group Chongqing Research Institute, Chongqing, 400039, China

    Sun Zhongguang

Corresponding author

Correspondence to Zhang Chengpeng.

Ethics declarations

Conflict of interest

No conflict of interest exits in the submission of this manuscript, and manuscript is approved by all authors for publication. I would like to declare on behalf of my co-authors that the work has not been published previously, and not under consideration for publication elsewhere, in whole or in part.

Additional information

Publisher's Note

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

Rights and permissions

About this article

Verify currency and authenticity via CrossMark

Cite this article

Jiangfu, H., Wenchao, H., Chengpeng, Z. et al. Numerical simulation on the deformation characteristics of borehole failure in gas-bearing coal seams considering the effective stress principle under complicated stress path conditions. Geomech. Geophys. Geo-energ. Geo-resour. 8, 95 (2022). https://doi.org/10.1007/s40948-022-00406-1

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI : https://doi.org/10.1007/s40948-022-00406-1

Keywords

  • Soft coal seam
  • Numerical simulation
  • Deformation
  • Borehole failure
  • Stress characteristics

beardcitter.blogspot.com

Source: https://link.springer.com/content/pdf/10.1007/s40948-022-00406-1.pdf

Post a Comment for "Coal Seam Continuity Was Interpreted From Borehole to Borehole Ç…å±‚è¿žç» §"