Quantitative research on sensitive factors of coal wall rib spalling in full mechanized caving face with large mining height

IF 4.2 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL Bulletin of Engineering Geology and the Environment Pub Date : 2025-01-24 DOI:10.1007/s10064-025-04103-7

Bo Xue, Yuyang Wang, Chen Wang, Wenshuai Zhang, Xiaoxiao Lu

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Abstract

With the advancement of equipment technology, the mining height of coal mine working faces has been increasing year by year. In thick coal seams with high mining heights, the frequent occurrence of rib spalling in coal faces has become a prominent issue, leading to unclear mechanisms and increased difficulty in controlling rib spalling. This paper employs a comprehensive approach combining theoretical analysis, physical experiments, numerical simulation, and mathematical statistics to investigate the influencing factors of rib spalling in coal faces. An orthogonal experimental model for coal face rib spalling is established, quantifying each influencing factor and ranking their sensitivity. Consequently, control strategies for rib spalling in fully mechanized top coal caving faces of thick coal seams are proposed. These findings provide valuable insights for managing rib spalling in similar conditions with high mining heights and offer guidance for selecting control factors against rib spalling.

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大采高综放工作面煤壁肋剥落敏感因素定量研究

随着装备技术的进步，煤矿工作面开采高度逐年增加。在开采高度高的厚煤层中，工作面肋剥落的频繁发生已成为一个突出问题，导致肋剥落机理不清，控制难度加大。本文采用理论分析、物理实验、数值模拟和数理统计相结合的综合方法，对煤层工作面肋层剥落的影响因素进行了研究。建立了工作面肋剥落的正交试验模型，量化了各影响因素，并对其敏感性进行了排序。在此基础上，提出了厚煤层综放工作面肋层剥落的控制策略。这些发现为在类似的高开采高度条件下控制肋骨剥落提供了有价值的见解，并为选择防止肋骨剥落的控制因素提供了指导。

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来源期刊

Bulletin of Engineering Geology and the Environment 工程技术-地球科学综合

CiteScore

7.10

自引率

11.90%

发文量

445

审稿时长

4.1 months

期刊介绍： Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces: • the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations; • the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change; • the assessment of the mechanical and hydrological behaviour of soil and rock masses; • the prediction of changes to the above properties with time; • the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.