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首页> 外文期刊>Shock and vibration >Surrounding Rock Deformation Mechanism and Control Technology for Gob-Side Entry Retaining with Fully Mechanized Gangue Backfilling Mining: A Case Study
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Surrounding Rock Deformation Mechanism and Control Technology for Gob-Side Entry Retaining with Fully Mechanized Gangue Backfilling Mining: A Case Study

机译：煤Gang石回采采空区围岩变形机理与控制技术研究

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摘要

To counter the technical difficulties faced by gob-side entry retaining (GER) under multiple complex mining geological conditions in China, this paper introduces a GER method with fully mechanized gangue backfilling mining. A similar materials simulation experiment was conducted to simulate the gob-backfilled GER process by using the similar model test system containing an independently developed horizontal pushing load device. The experimental results show that the compaction speed of the backfilling area (BFA) can be improved, and the main roof subsidence can be reduced by increasing the horizontal pushing load and reducing the attenuation rate of the stress in BFA. The designed roadside backfill body (RBB) containing a flexible cushion is adaptive to the given deformation of the main roof, thus reducing the stress concentration of the RBB. The field test results show that when a 2 MPa horizontal pushing load is exerted in the BFA, arranging a 200 mm high-water-material flexible cushion can cause the BFA to swiftly change to the compaction stage. After stabilized deformation, the roadway section satisfies the design and application requirements. The feasibility and rationality of the GER with the fully mechanized gangue backfilling mining are proved, providing a safe, efficient, and environmentally friendly mining method without using a coal pillar.
机译：为解决中国在多种复杂矿山地质条件下采空区留守（GER）所面临的技术难题，本文提出了一种采用全煤石回填开采的GER方法。通过使用包含独立开发的水平推动载荷装置的相似模型测试系统，进行了相似的材料模拟实验，以模拟采空区回填的GER过程。实验结果表明，通过增加水平推挤载荷和减小BFA中应力的衰减率，可以提高回填区（BFA）的压实速度，并可以减少主顶板沉降。设计的路边回填体（RBB）包含柔性垫层，可适应主屋顶的给定变形，从而降低了RBB的应力集中。现场测试结果表明，当在BFA上施加2 MPa的水平推力载荷时，布置200 mm高水材料柔性垫层会导致BFA迅速进入压实阶段。稳定变形后，巷道断面满足设计和应用要求。煤the石回采的机械化实践证明了GER的可行性和合理性，提供了一种不使用煤柱的安全，高效，环保的开采方法。

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  • 来源
    《Shock and vibration》 |2017年第3期|6085941.1-6085941.15|共15页
  • 作者

    Gong Peng; Ma Zhanguo; Zhang Ray Ruichong; Ni Xiaoyan; Liu Fei; Huang Zhimin;

  • 作者单位

    China Univ Min & Technol, Sch Mech & Civil Engn, Sch Sci, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Sch Mech & Civil Engn, Sch Sci, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China;

    Colorado Sch Mines, Dept Mech Engn, Golden, CO 80401 USA;

    China Univ Min & Technol, Sch Mech & Civil Engn, Sch Sci, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Sch Mech & Civil Engn, Sch Sci, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China;

    China Univ Min & Technol, Sch Mech & Civil Engn, Sch Sci, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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