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中等稳定围岩煤巷掘进工作面协同锚固与支护可行性研究

Feasibility study of synergistic anchoring and supporting in coal entry heading faces with moderately stable surrounding rock.

作者信息

Wang Qi, Wang Xuecheng, Wang Yun, Yuan Xiaoming, Ma Zhao, Ye Tian, Shi Zhiyuan, Wang Jindong

机构信息

Taiyuan Research Institute, China Coal Technology and Engineering Group Co. Ltd., Taiyuan, 030006, Shanxi, China.

Shanxi Tiandi Coal Machinery Co. Ltd, Taiyuan, 030006, Shanxi, China.

出版信息

Sci Rep. 2025 May 6;15(1):15794. doi: 10.1038/s41598-025-95274-6.

DOI:10.1038/s41598-025-95274-6
PMID:40328928
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12056054/
Abstract

The support method in coal entry heading faces significantly impacts the stability of surrounding rock and heading efficiency. To enhance heading efficiency while ensuring the stability of surrounding rock, this study takes the 011813 headgate heading face in Jinfeng Mine. Addressing the technical conditions and the demand for rapid heading, an innovative partitioned support approach of "local anchoring + non-repeated temporary support" and "rapid reinforcement anchoring" is proposed. Field investigation, theoretical analysis, and numerical experiments are employed to systematically study the synergistic effect of anchoring and supporting in heading faces. The technical principles of synergistic anchoring and supporting are detailed, the mechanical model of surrounding rock under this system is established, and the strength of temporary support under this system is established. By using a systematic analysis method, parameters for local anchoring, temporary support, and reinforcement anchoring are proposed. Numerical experiments are conducted to comparatively analyze the stress evolution, damage and deformation characteristics of surrounding rock under conditions of no support, timely one-time anchoring, and synergistic anchoring and supporting. The influence of synergistic anchoring and supporting on the stability of surrounding rock is examined, the mechanism of synergistic anchoring and supporting is revealed, and the rapid heading process using this approach is optimized. Based on the findings, the feasibility of synergistic anchoring and supporting is evaluated from the perspectives of technical principles, surrounding rock stability characteristics, support mechanism, and rapid heading processes. The research indicates that the proposed approach holds great potential for field application in Jinfeng Mine. In subsequent heading practices, it is recommended to adjust the unsupported roof distance and unsupported roof distance based on actual conditions, fine-tune the partitioned anchoring parameters, focus on the effective control of surrounding rock through local anchoring, and enhance both the load-bearing capacity and cooperative deformation ability of temporary supports.

摘要

煤巷掘进工作面的支护方式对围岩稳定性和掘进效率有显著影响。为提高掘进效率并确保围岩稳定性，本研究以金凤煤矿011813回风巷掘进工作面为对象。针对其技术条件和快速掘进需求，提出了“局部锚固+非重复临时支护”和“快速加强锚固”的创新性分区支护方法。采用现场调研、理论分析和数值试验等方法，系统研究了掘进工作面锚固与支护的协同效应。详细阐述了协同锚固与支护的技术原理，建立了该系统下围岩的力学模型，确定了该系统下临时支护的强度。通过系统分析方法，提出了局部锚固、临时支护和加强锚固的参数。进行数值试验，对比分析无支护、及时一次性锚固以及协同锚固与支护条件下围岩的应力演化、损伤及变形特征。考察协同锚固与支护对围岩稳定性的影响，揭示协同锚固与支护的机理，并优化采用该方法的快速掘进工艺。基于研究结果，从技术原理、围岩稳定性特征、支护机理和快速掘进工艺等方面评估协同锚固与支护的可行性。研究表明，所提出的方法在金凤煤矿具有很大的现场应用潜力。在后续掘进实践中，建议根据实际情况调整空顶距和无支护段长度，微调分区锚固参数，注重通过局部锚固有效控制围岩，并提高临时支护的承载能力和协同变形能力。

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