IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v16y2024i4p1489-d1336591.html
   My bibliography  Save this article

The Effects of Coal Floor Brittleness on the Risk of Water Inrushes from Underlying Aquifers: A Numerical Study

Author

Listed:
  • Zhichao Li

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China)

  • Zhuangzhuang Yang

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China)

  • Shuren Wang

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China
    International Joint Research Laboratory of Henan Province for Underground Space Development and Disaster Prevention, Henan Polytechnic University, Jiaozuo 454003, China)

  • Lianwei Ren

    (School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454003, China)

  • Jun Fang

    (Haida Construction Group Co., Ltd., Ningbo 315000, China)

Abstract

Karst water in coal floors is the most common hazard in the coal fields of North China. Water inrush disasters always occur due to reductions in the efficacy of a coal floor’s water resistance ability, and have brought huge casualties and losses. The floor damage zone during mining disturbance is crucial to the formation of the water inrush pathway and is considered to be closely related with floor rock brittleness. To investigate the effects of coal floor brittleness on the hazard of water inrushes from underlying aquifers, four groups of numerical simulations are conducted in this study based on a finite-element method. These numerical simulations especially concern the contrastive analysis of brittle rock’s properties regarding the failure characteristics of rock samples, fracture development in layered rocks, the damage zone of the floor during mining disturbance, and the hazard of water inrush from the floor during mining. The results show that brittle rock is easier to destroy in comparison with ductile rock. Brittle layers are more likely to develop denser natural fractures than ductile layers. The more brittle the floor rock is, the larger the depth of floor damage will be. The brittle floor is verified to induce water inrush from an underlying aquifer more easily than the ductile floor. This study revealed the relationship between the brittle property of coal floors and the depth of mining-induced floor damage zones, providing a reference for hazard evaluation of water inrush from coal floors and control measures.

Suggested Citation

  • Zhichao Li & Zhuangzhuang Yang & Shuren Wang & Lianwei Ren & Jun Fang, 2024. "The Effects of Coal Floor Brittleness on the Risk of Water Inrushes from Underlying Aquifers: A Numerical Study," Sustainability, MDPI, vol. 16(4), pages 1-15, February.
  • Handle: RePEc:gam:jsusta:v:16:y:2024:i:4:p:1489-:d:1336591
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/16/4/1489/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/2071-1050/16/4/1489/
    Download Restriction: no
    ---><---

    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:jsusta:v:16:y:2024:i:4:p:1489-:d:1336591. 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.

    We have no bibliographic references for this item. You can help adding them by using 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.