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首页> 外文期刊>Shock and vibration >Study on Presplitting Blasting the Roof Strata of Adjacent Roadway to Control Roadway Deformation
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Study on Presplitting Blasting the Roof Strata of Adjacent Roadway to Control Roadway Deformation

机译：邻近巷道顶板地层预爆爆破控制巷道变形的研究

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摘要

In order to solve the problem of roadway deformation based on the theory of short cantilever beam by roof cutting, the method of pressure relief by roof cutting in the adjacent roadway is proposed. Through presplitting blasting the roadway hard rock layer, the stress propagation path is cut off, and the surrounding rock stress environment of the roadway is improved, to achieve the purpose of controlling the deformation of the roadway caused by stress. Through theoretical analysis, it is determined that the depth of the presplitting blasthole is 17m, and the angle with the vertical direction is 10 degrees. Based on in situ measurements and tests, by presplitting blasting the roof strata of the adjacent roadway, the maximal value of the working resistance of the hydraulic support in the presplitting blasting side of the working face decreased by 24.9%, and the average volumes of the maximum floor heave, the maximum roof subsidence, and the maximum ribs displacement were reduced by 50.1%, 34.9%, and 41.7%, respectively. This method completely changes the traditional thought patterns of reinforcing support to control roadway deformation from strong support to pressure relief. It provides a new idea for controlling the roadway deformation.
机译：为了解决基于顶板短悬臂梁理论的巷道变形问题，提出了相邻巷道顶板切割卸压的方法。通过对巷道硬岩层进行预裂爆破，切断了应力传播路径，改善了巷道围岩应力环境，达到了控制应力引起巷道变形的目的。通过理论分析，确定预裂爆孔深度为17m，与垂直方向的夹角为10度。根据现场测量和测试，通过对相邻巷道顶板层进行预裂爆破，工作面预裂爆破侧液压支架的工作阻力最大值降低了24.9％，平均体积最大地面起伏，最大屋顶沉降和最大肋骨位移分别减少了50.1％，34.9％和41.7％。这种方法完全改变了传统的加固支座的思维方式，以控制巷道从强力支护到卸压的变形。它为控制巷道变形提供了新思路。

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  • 来源
    《Shock and vibration》 |2019年第1期|3174898.1-3174898.16|共16页
  • 作者

    Yang Xiaojie; Hu Chaowen; He Manchao; Wang Haohao; Zhou Yubo; Liu Xiaoyu; Zhen Enze; Ma Xingen;

  • 作者单位

    China Univ Min & Technol, State Key Lab GeoMech & Deep Underground Engn, Beijing 100083, Peoples R China|China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, Peoples R China;

    China Univ Min & Technol, State Key Lab GeoMech & Deep Underground Engn, Beijing 100083, Peoples R China|China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, Peoples R China;

    China Univ Min & Technol, State Key Lab GeoMech & Deep Underground Engn, Beijing 100083, Peoples R China;

    China Univ Min & Technol, State Key Lab GeoMech & Deep Underground Engn, Beijing 100083, Peoples R China;

    China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, Peoples R China;

    China Univ Min & Technol, State Key Lab GeoMech & Deep Underground Engn, Beijing 100083, Peoples R China|China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, Peoples R China;

    China Univ Min & Technol, State Key Lab GeoMech & Deep Underground Engn, Beijing 100083, Peoples R China|China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, Peoples R China;

    China Univ Min & Technol, State Key Lab GeoMech & Deep Underground Engn, Beijing 100083, Peoples R China|China Univ Min & Technol, Sch Mech & Civil Engn, Beijing 100083, 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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