IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v11y2018i5p1116-d144168.html
   My bibliography  Save this article

Effects of Water and Brine Saturation on Mechanical Property Alterations of Brown Coal

Author

Listed:
  • Xiaogang Zhang

    (Deep Earth Energy Research Laboratory, Building 60, Monash University, Melbourne, VIC 3800, Australia)

  • Ranjith Pathegama Gamage

    (Deep Earth Energy Research Laboratory, Building 60, Monash University, Melbourne, VIC 3800, Australia)

  • Mandadige Samintha Anne Perera

    (Deep Earth Energy Research Laboratory, Building 60, Monash University, Melbourne, VIC 3800, Australia
    Department of Infrastructure Engineering, Building 176, The University of Melbourne, Melbourne, VIC 3010, Australia)

  • Ashani Savinda Ranathunga

    (Department of Civil Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka)

Abstract

The adsorption of moisture or brine into coal causes the coal mass mechanical properties to be significantly altered, which can greatly affect the coal mining and coal seam gas extraction process. A study was therefore initiated to investigate the influence of moisture and brine saturations (5–25%) on brown coals’ strength through a series of unconfined compressive strength tests, with the aid of acoustic emission, optical 3-D deformation analysis and scanning electron microscopy. According to the results, the coal mass is weakened by up to 26% upon the adsorption of moisture and water saturated samples show no crack propagation, whereas brine saturation enhances coal strength by up to 21% and delays crack propagation due to the crystallization of sodium chloride. Besides, a high brine concentration (25%) greatly improves coal mass strength but impairs the increase of Young’s modulus due to its corrosive nature, which is consistent with the values of maximum strain at failure of the tested samples (3.9%, 3.1% and 3.6% for 5%, 15% and 25% brine saturated samples, respectively). In addition, because of the precipitation of sodium chloride in coal and the increase of conductivity of pore fluid, more acoustic emission signals are detected for brine saturated samples, while water saturated samples exhibit mush less acoustic release compared to the unsaturated samples.

Suggested Citation

  • Xiaogang Zhang & Ranjith Pathegama Gamage & Mandadige Samintha Anne Perera & Ashani Savinda Ranathunga, 2018. "Effects of Water and Brine Saturation on Mechanical Property Alterations of Brown Coal," Energies, MDPI, vol. 11(5), pages 1-17, May.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1116-:d:144168
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/11/5/1116/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/11/5/1116/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Yan-Hua Huang & Sheng-Qi Yang & Matthew R. Hall & Yuan-Chao Zhang, 2018. "The Effects of NaCl Concentration and Confining Pressure on Mechanical and Acoustic Behaviors of Brine-Saturated Sandstone," Energies, MDPI, vol. 11(2), pages 1-17, February.
    2. Mandadige Samintha Anne Perera & Ashani Savinda Ranathunga & Pathegama Gamage Ranjith, 2016. "Effect of Coal Rank on Various Fluid Saturations Creating Mechanical Property Alterations Using Australian Coals," Energies, MDPI, vol. 9(6), pages 1-15, June.
    3. Haochen Zhao & Rennie B. Kaunda, 2018. "Numerical Assessment of the Influences of Gas Pressure on Coal Burst Liability," Energies, MDPI, vol. 11(2), pages 1-13, January.
    4. Paul E. Hardisty & Tom S. Clark & Robert G. Hynes, 2012. "Life Cycle Greenhouse Gas Emissions from Electricity Generation: A Comparative Analysis of Australian Energy Sources," Energies, MDPI, vol. 5(4), pages 1-26, March.
    5. Fangtian Wang & Cun Zhang & Ningning Liang, 2017. "Gas Permeability Evolution Mechanism and Comprehensive Gas Drainage Technology for Thin Coal Seam Mining," Energies, MDPI, vol. 10(9), pages 1-18, September.
    6. Perera, M.S.A. & Ranjith, P.G. & Peter, M., 2011. "Effects of saturation medium and pressure on strength parameters of Latrobe Valley brown coal: Carbon dioxide, water and nitrogen saturations," Energy, Elsevier, vol. 36(12), pages 6941-6947.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Huping Wang & Zhao Wang & Haikui Yin & Chao Jin & Xiaogang Zhang & Langtao Liu, 2023. "CO 2 Flow Characteristics in Macro-Scale Coal Sample: Effect of CO 2 Injection Pressure and Buried Depth," Sustainability, MDPI, vol. 15(10), pages 1-20, May.
    2. Isaka, B.L. Avanthi & Ranjith, P.G. & Rathnaweera, T.D. & Perera, M.S.A. & Kumari, W.G.P., 2019. "Influence of long-term operation of supercritical carbon dioxide based enhanced geothermal system on mineralogical and microstructurally-induced mechanical alteration of surrounding rock mass," Renewable Energy, Elsevier, vol. 136(C), pages 428-441.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Federica Cucchiella & Idiano D’Adamo & Paolo Rosa, 2015. "Industrial Photovoltaic Systems: An Economic Analysis in Non-Subsidized Electricity Markets," Energies, MDPI, vol. 8(11), pages 1-16, November.
    2. Bo Wang & Sitao Zhu & Fuxing Jiang & Jinhai Liu & Xiaoguang Shang & Xiufeng Zhang, 2020. "Investigating the Width of Isolated Coal Pillars in Deep Hard-Strata Mines for Prevention of Mine Seismicity and Rockburst," Energies, MDPI, vol. 13(17), pages 1-18, August.
    3. Gürsan, C. & de Gooyert, V., 2021. "The systemic impact of a transition fuel: Does natural gas help or hinder the energy transition?," Renewable and Sustainable Energy Reviews, Elsevier, vol. 138(C).
    4. Nasvi, M.C.M. & Ranjith, P.G. & Sanjayan, J. & Haque, A., 2013. "Sub- and super-critical carbon dioxide permeability of wellbore materials under geological sequestration conditions: An experimental study," Energy, Elsevier, vol. 54(C), pages 231-239.
    5. Jose Miguel Riquelme-Dominguez & Jesús Riquelme & Sergio Martinez, 2022. "New Trends in the Control of Grid-Connected Photovoltaic Systems for the Provision of Ancillary Services," Energies, MDPI, vol. 15(21), pages 1-11, October.
    6. Eleanor Stephenson & Karena Shaw, 2013. "¨ A Dilemma of Abundance: Governance Challenges of Reconciling Shale Gas Development and Climate Change Mitigation," Sustainability, MDPI, vol. 5(5), pages 1-23, May.
    7. Gilbert, Alexander Q. & Sovacool, Benjamin K., 2018. "Carbon pathways in the global gas market: An attributional lifecycle assessment of the climate impacts of liquefied natural gas exports from the United States to Asia," Energy Policy, Elsevier, vol. 120(C), pages 635-643.
    8. De Silva, P.N.K. & Simons, S.J.R. & Stevens, P., 2016. "Economic impact analysis of natural gas development and the policy implications," Energy Policy, Elsevier, vol. 88(C), pages 639-651.
    9. Hansi Liu & Sheng Zhou & Tianduo Peng & Xunmin Ou, 2017. "Life Cycle Energy Consumption and Greenhouse Gas Emissions Analysis of Natural Gas-Based Distributed Generation Projects in China," Energies, MDPI, vol. 10(10), pages 1-14, October.
    10. Ayal Wanniarachchi & Ranjith Pathegama Gamage & Qiao Lyu & Samintha Perera & Hiruni Wickramarathne & Tharaka Rathnaweera, 2018. "Mechanical Characterization of Low Permeable Siltstone under Different Reservoir Saturation Conditions: An Experimental Study," Energies, MDPI, vol. 12(1), pages 1-21, December.
    11. Maruf Rahman Maxim & Kerstin K. Zander, 2020. "Green Tax Reform in Australia in the Presence of Improved Environment-Induced Productivity Gain: Does It Offer Sustainable Recovery from a Post-COVID-19 Recession?," Sustainability, MDPI, vol. 12(16), pages 1-18, August.
    12. Ding, Ning & Liu, Jingru & Yang, Jianxin & Yang, Dong, 2017. "Comparative life cycle assessment of regional electricity supplies in China," Resources, Conservation & Recycling, Elsevier, vol. 119(C), pages 47-59.
    13. Nesrine Kefif & Bachir Melzi & Mehran Hashemian & Mamdouh El Haj Assad & Siamak Hoseinzadeh, 2022. "Feasibility and optimal operation of micro energy hybrid system (hydro/wind) in the rural valley region [Energy revolution: from a fossil energy era to a new energy era]," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 17, pages 58-68.
    14. Mandadige Samintha Anne Perera & Kadinappuli Hewage Suresh Madushan Sampath & Pathegama Gamage Ranjith & Tharaka Dilanka Rathnaweera, 2018. "Effects of Pore Fluid Chemistry and Saturation Degree on the Fracability of Australian Warwick Siltstone," Energies, MDPI, vol. 11(10), pages 1-15, October.
    15. Yiyu Lu & Yugang Cheng & Zhaolong Ge & Liang Cheng & Shaojie Zuo & Jianyu Zhong, 2016. "Determination of Fracture Initiation Locations during Cross-Measure Drilling for Hydraulic Fracturing of Coal Seams," Energies, MDPI, vol. 9(5), pages 1-13, May.
    16. Isaka, B.L. Avanthi & Ranjith, P.G. & Rathnaweera, T.D. & Perera, M.S.A. & Kumari, W.G.P., 2019. "Influence of long-term operation of supercritical carbon dioxide based enhanced geothermal system on mineralogical and microstructurally-induced mechanical alteration of surrounding rock mass," Renewable Energy, Elsevier, vol. 136(C), pages 428-441.
    17. Perera, M.S.A. & Ranjith, P.G. & Viete, D.R., 2013. "Effects of gaseous and super-critical carbon dioxide saturation on the mechanical properties of bituminous coal from the Southern Sydney Basin," Applied Energy, Elsevier, vol. 110(C), pages 73-81.
    18. Díaz-Trujillo, Luis Alberto & Nápoles-Rivera, Fabricio, 2019. "Optimization of biogas supply chain in Mexico considering economic and environmental aspects," Renewable Energy, Elsevier, vol. 139(C), pages 1227-1240.
    19. Alatorre, José Eduardo & Peres Núñez, Wilson & Bárcena Ibarra, Alicia & Samaniego, Joseluis, 2020. "The climate emergency in Latin America and the Caribbean: The path ahead – resignation or action?," Libros de la CEPAL, Naciones Unidas Comisión Económica para América Latina y el Caribe (CEPAL), number 45678 edited by Eclac.
    20. Zhang, Jinrui & Meerman, Hans & Benders, René & Faaij, André, 2021. "Techno-economic and life cycle greenhouse gas emissions assessment of liquefied natural gas supply chain in China," Energy, Elsevier, vol. 224(C).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1116-:d:144168. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.