IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v13y2020i14p3564-d382929.html
   My bibliography  Save this article

Decreasing Mining Losses for the Room and Pillar Method by Replacing the Inter-Room Pillars by the Construction of Wooden Cribs Filled with Waste Rocks

Author

Listed:
  • Krzysztof Skrzypkowski

    (Faculty of Mining and Geoengineering, AGH University of Science and Technology, Mickiewicza 30 av., 30-059 Cracow, Poland)

Abstract

The article presents methods of securing mining excavations using wooden cribs. For the underground room and pillar method used to excavate zinc and lead ore body in the Olkusz-Pomorzany mine in Poland, model tests for the replacement of rock pillars by wooden cribs are presented. In the first stage of research, the results of laboratory strength tests carried out on models of four-point, six-point and eight-point cribs made of wooden beech beams at a 1:28 scale arranged horizontally were determined. For the first time, a concave round notch connection was used to connect the beams of the wooden cribs. The maximal capacity of cribs consisting only of beams and filled with waste rocks taken from underground mining excavations was determined. In addition, the vertical deformations of the cribs at maximal loading force and their specific deformations are presented. Additionally, on the basis of load-displacement characteristics, the range in variability of the stiffness of empty cribs and those filled with waste rocks was calculated as a function of their compressibility. In the second stage of research, the room and pillar method was designed in the Phase2 numerical program. The aim of the study was to determine the stresses in the inter-room pillars. Based on the results of laboratory and numerical tests, a factor of safety was determined, indicating that it is possible to reduce mining losses while maintaining the safe exploitation conditions of the ore body.

Suggested Citation

  • Krzysztof Skrzypkowski, 2020. "Decreasing Mining Losses for the Room and Pillar Method by Replacing the Inter-Room Pillars by the Construction of Wooden Cribs Filled with Waste Rocks," Energies, MDPI, vol. 13(14), pages 1-20, July.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:14:p:3564-:d:382929
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/13/14/3564/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/13/14/3564/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Hengjie Luan & Yujing Jiang & Huili Lin & Guofeng Li, 2018. "Development of a New Gob-Side Entry-Retaining Approach and Its Application," Sustainability, MDPI, vol. 10(2), pages 1-15, February.
    2. Krzysztof Skrzypkowski & Waldemar Korzeniowski & Krzysztof Zagórski & Anna Zagórska, 2019. "Flexibility and Load-Bearing Capacity of Roof Bolting as Functions of Mounting Depth and Hole Diameter," Energies, MDPI, vol. 12(19), pages 1-23, September.
    3. Yang Yu & Shen-en Chen & Ka-zhong Deng & Hong-dong Fan, 2017. "Long-Term Stability Evaluation and Pillar Design Criterion for Room-and-Pillar Mines," Energies, MDPI, vol. 10(10), pages 1-13, October.
    4. Krzysztof Skrzypkowski & Waldemar Korzeniowski & Krzysztof Zagórski & Anna Zagórska, 2020. "Adjustment of the Yielding System of Mechanical Rock Bolts for Room and Pillar Mining Method in Stratified Rock Mass," Energies, MDPI, vol. 13(8), pages 1-23, April.
    5. Krzysztof Skrzypkowski, 2019. "The Influence of Room and Pillar Method Geometry on the Deposit Utilization Rate and Rock Bolt Load," Energies, MDPI, vol. 12(24), pages 1-15, December.
    6. Kashi Vishwanath Jessu & Anthony J. S. Spearing & Mostafa Sharifzadeh, 2018. "A Parametric Study of Blast Damage on Hard Rock Pillar Strength," Energies, MDPI, vol. 11(7), pages 1-18, July.
    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. Karolina Adach-Pawelus & Daniel Pawelus, 2021. "Application of Hydraulic Backfill for Rockburst Prevention in the Mining Field with Remnant in the Polish Underground Copper Mines," Energies, MDPI, vol. 14(13), pages 1-17, June.
    2. Krzysztof Skrzypkowski, 2020. "Comparative Analysis of the Mining Cribs Models Filled with Gangue," Energies, MDPI, vol. 13(20), pages 1-18, October.
    3. Ming Li & Yueguan Yan & Huayang Dai & Zhaojiang Zhang, 2023. "Study on Rock and Surface Subsidence Laws of Super-High Water Material Backfilling and Mining Technology: A Case Study in Hengjian Coal Mine," Sustainability, MDPI, vol. 15(11), pages 1-22, May.
    4. Krzysztof Skrzypkowski, 2021. "3D Numerical Modelling of the Application of Cemented Paste Backfill on Displacements around Strip Excavations," Energies, MDPI, vol. 14(22), pages 1-17, November.
    5. Krzysztof Skrzypkowski, 2021. "Determination of the Backfilling Time for the Zinc and Lead Ore Deposits with Application of the BackfillCAD Model," Energies, MDPI, vol. 14(11), pages 1-19, May.

    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. Krzysztof Skrzypkowski & Waldemar Korzeniowski & Krzysztof Zagórski & Anna Zagórska, 2020. "Modified Rock Bolt Support for Mining Method with Controlled Roof Bending," Energies, MDPI, vol. 13(8), pages 1-20, April.
    2. Krzysztof Skrzypkowski, 2021. "An Experimental Investigation into the Stress-Strain Characteristic under Static and Quasi-Static Loading for Partially Embedded Rock Bolts," Energies, MDPI, vol. 14(5), pages 1-17, March.
    3. Krzysztof Skrzypkowski, 2020. "Case Studies of Rock Bolt Support Loads and Rock Mass Monitoring for the Room and Pillar Method in the Legnica-Głogów Copper District in Poland," Energies, MDPI, vol. 13(11), pages 1-20, June.
    4. Yongkang Yang & Xuecong Xu & Chenlong Wang, 2023. "Study on the Mechanism of Surrounding Rock Deformation and Its Control for Roof Cutting Retained Gob-Side Entry in Close-Distance Coal Seams Co-Mining," Energies, MDPI, vol. 16(11), pages 1-17, May.
    5. Krzysztof Lalik & Ireneusz Dominik & Paweł Gut & Krzysztof Skrzypkowski & Waldemar Korzeniowski & Krzysztof Zagórski, 2021. "Non-Destructive Acoustical Rock Bolt Testing System with Intelligent Filtering in Salt Mine ‘Wieliczka’," Energies, MDPI, vol. 14(17), pages 1-16, September.
    6. Krzysztof Skrzypkowski & Waldemar Korzeniowski & Krzysztof Zagórski & Anna Zagórska, 2020. "Adjustment of the Yielding System of Mechanical Rock Bolts for Room and Pillar Mining Method in Stratified Rock Mass," Energies, MDPI, vol. 13(8), pages 1-23, April.
    7. Paulina Gackowiec & Marta Podobińska-Staniec & Edyta Brzychczy & Christopher Kühlbach & Toyga Özver, 2020. "Review of Key Performance Indicators for Process Monitoring in the Mining Industry," Energies, MDPI, vol. 13(19), pages 1-20, October.
    8. Houqiang Yang & Changliang Han & Nong Zhang & Yuantian Sun & Dongjiang Pan & Changlun Sun, 2020. "Long High-Performance Sustainable Bolt Technology for the Deep Coal Roadway Roof: A Case Study," Sustainability, MDPI, vol. 12(4), pages 1-14, February.
    9. Yang Yu & Shen-En Chen & Ka-Zhong Deng & Peng Wang & Hong-Dong Fan, 2018. "Subsidence Mechanism and Stability Assessment Methods for Partial Extraction Mines for Sustainable Development of Mining Cities—A Review," Sustainability, MDPI, vol. 10(1), pages 1-21, January.
    10. Benedetta Antonielli & Alessandra Sciortino & Stefano Scancella & Francesca Bozzano & Paolo Mazzanti, 2021. "Tracking Deformation Processes at the Legnica Glogow Copper District (Poland) by Satellite InSAR—I: Room and Pillar Mine District," Land, MDPI, vol. 10(6), pages 1-20, June.
    11. Xiaowei Guo & Xigui Zheng & Peng Li & Rui Lian & Cancan Liu & Niaz Muhammad Shahani & Cong Wang & Boyang Li & Wenjie Xu & Guowei Lai, 2021. "Full-Stress Anchoring Technology and Application of Bolts in the Coal Roadway," Energies, MDPI, vol. 14(22), pages 1-24, November.
    12. Dong Wang & Yujing Jiang & Xiaoming Sun & Hengjie Luan & Hui Zhang, 2019. "Nonlinear Large Deformation Mechanism and Stability Control of Deep Soft Rock Roadway: A Case Study in China," Sustainability, MDPI, vol. 11(22), pages 1-20, November.
    13. Artur Kozłowski & Łukasz Bołoz, 2021. "Design and Research on Power Systems and Algorithms for Controlling Electric Underground Mining Machines Powered by Batteries," Energies, MDPI, vol. 14(13), pages 1-21, July.
    14. Krzysztof Skrzypkowski, 2021. "Determination of the Backfilling Time for the Zinc and Lead Ore Deposits with Application of the BackfillCAD Model," Energies, MDPI, vol. 14(11), pages 1-19, May.
    15. Jianhang Chen & Ziwei Ding & Saisai Wu & Junwen Zhang, 2022. "Studying the Bond Performance of Full-Grouting Rock Bolts Based on the Variable Controlling Method," Energies, MDPI, vol. 15(9), pages 1-15, April.
    16. Zhijun Tian & Zizheng Zhang & Min Deng & Shuai Yan & Jianbiao Bai, 2020. "Gob-Side Entry Retained with Soft Roof, Floor, and Seam in Thin Coal Seams: A Case Study," Sustainability, MDPI, vol. 12(3), pages 1-22, February.
    17. Yuanyuan Pu & Derek B. Apel & Stanislaw Prusek & Andrzej Walentek & Tomasz Cichy, 2021. "Back-analysis for initial ground stress field at a diamond mine using machine learning approaches," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 105(1), pages 191-203, January.
    18. Krzysztof Skrzypkowski, 2020. "Comparative Analysis of the Mining Cribs Models Filled with Gangue," Energies, MDPI, vol. 13(20), pages 1-18, October.
    19. Zhaowen Du & Shaojie Chen & Junbiao Ma & Zhongping Guo & Dawei Yin, 2020. "Gob-Side Entry Retaining Involving Bag Filling Material for Support Wall Construction," Sustainability, MDPI, vol. 12(16), pages 1-20, August.
    20. Yihe Yu & Liqiang Ma & Dongsheng Zhang, 2019. "Characteristics of Roof Ground Subsidence While Applying a Continuous Excavation Continuous Backfill Method in Longwall Mining," Energies, MDPI, vol. 13(1), pages 1-20, December.

    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:13:y:2020:i:14:p:3564-:d:382929. 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.