深井冲击煤层充填工作面区段煤柱宽度研究

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摘要为提高深井冲击煤层充填工作面防冲可靠性，保障采场围岩结构稳定和实现安全开采，以山东某深井超高水嗣后充填工作面为研究背景，采用理论分析、数值模拟、现场实测相结合方法，研究沿空充填开采“采空区–煤柱–关键层”T型覆岩空间结构模型及其稳定性，探讨兼顾防冲与充填体保水的合理区段煤柱宽度。结果表明：(1) 满足煤柱顶板岩层断裂线因素和支承强度因素情况下，煤柱能够“隔离”充填采空区并对关键岩层及其覆岩空间结构形成支撑作用；(2)“采空区–煤柱–关键层”形成近似呈T型的覆岩空间结构，该T型模型的水平和竖直结构分别发生挠曲和压缩为主的变形，煤柱是控制T型模型稳定性的主要结构；(3) 充填工作面煤柱稳定性主要与静(动)态平均支承应力和自身承载强度R有关，建立煤柱整体冲击失稳的或力学判据，以此为基础确定合理区段煤柱宽度为10 m。通过现场微震、应力、地面沉降等监测分析，验证理论模型合理性以及分析结果可靠性，成果对深井冲击煤层充填工作面煤柱留设与防冲研究具有一定的理论和应用价值。

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	张明1
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	魏凯祥1
	年宾3
	姜福兴4
	王昆3
	朱海虎1
	胡浩1

关键词 ：采矿工程, 深井开采, 覆岩空间结构, 冲击地压, 区段煤柱, 充填工作面

Abstract：To improve the reliability of rockburst prevention in the filling face of a deep coal seam and to ensure the stability of the surrounding rock structure in the stope and achieve safe mining，this study focuses on a filling face in a deep well with super-high water content in Shandong，China. Through a combination of theoretical analysis，numerical simulation，and field measurement，the spatial structure model and stability of the“goaf-coal pillar-key strata”T-type overlying rock structure during gob-side entry retaining mining were investigated. Furthermore，the reasonable coal pillar width considering both rockburst prevention and water-retaining performance of the filling body was explored. The results indicate that：(1) the coal pillar can effectively“isolate”the goaf and provide support to the key strata and their overlying spatial structure，under the conditions that meet the fracture line of the roof strata and the supporting strength factors. (2) The“goaf-coal pillar-key strata”forms an approximately T-shaped overlying rock spatial structure. The horizontal and vertical structures of this T-shaped model primarily undergo flexural and compressive deformation，respectively，with the coal pillar being the main structure controlling the stability of the T-type model. (3) The stability of the coal pillar in the filling face is mainly related to the static(dynamic) average supporting stress and its own bearing strength R. The overall impact-induced instability criterion or was established，based on which the reasonable width of the coal pillar was determined to be 10 meters. The theoretical model?s validity and the reliability of the analysis results were verified through field monitoring of microseismic activity，stress，and surface subsidence. The findings provide theoretical and practical value for the design of coal pillar width and rockburst prevention in the filling face of deep coal seams.

Key words： mining engineering deep mining spatial structure of overburden rock rock burst section coal pillar filling working face

引用本文:

张明1，2，3，魏凯祥1，年宾3，姜福兴4，王昆3，朱海虎1，胡浩1. 深井冲击煤层充填工作面区段煤柱宽度研究[J]. 岩石力学与工程学报, 2025, 44(2): 316-330.
ZHANG Ming1，2，3，WEI Kaixiang1，NIAN Bin3，JIANG Fuxing4，WANG Kun3，ZHU Haihu1，HU Hao1. Study on the width of section coal pillar in filling face of coal seam with rockburst hazards in deep mine. , 2025, 44(2): 316-330.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2025/V44/I2/316

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