复杂条件下综采沿空巷道稳定性协同响应机制分析

Analysis of Collaborative Response Mechanism for Stability of Roadway Along Goaf in Fully Mechanized Mining under Complex Conditions

  • 摘要: 针对郭屯煤矿113上01工作面复杂地质条件与深部高应力环境导致的顶板稳定性差、支护失效频发等难题,构建了支护-矿压监测-通风系统协同响应模型,融合现场多源监测数据,量化分析了地应力分布、煤层结构及采掘进度等多因素对围岩稳定的复合作用机理。基于耦合机制,引入动态调控策略,实现了支护参数与矿压反馈的实时闭环联动。工程应用表明,优化后,工作面顶板稳定性合格率由60%提升至90%,支护系统失效率由3%降至0.5%,矿井安全事故率由2.5%降至1.25%,年均煤炭产量提升12%。该协同响应机制显著增强了工作面稳定性与生产连续性,为冲击地压威胁下的深部矿井安全高效开采提供了技术支撑与实践路径。

     

    Abstract: In view of the difficult problems of poor roof stability, frequent support failures and others caused by complex geological conditions and deep high stress environment in the 113 upper 01 working face of Guotun Coal Mine, a collaborative response model of support - mine pressure monitoring - ventilation system is constructed, which integrates on-site multi-source monitoring data and quantitatively analyzes the composite action mechanism of multi-factor such as geostress distribution, coal seam structure, mining and excavation progress and others on surrounding rock stability. Based on the coupling mechanism, a dynamic regulation and control strategy is introduced to achieve real-time closed-loop linkage between support parameters and mine pressure feedback. The engineering application shows that after optimization, the roof stability qualification rate of the working face is improved from 60% to 90%, the failure rate of the support system is decreased from 3% to 0.5%, the mine safety accident rate is decreased from 2.5% to 1.25%, and the annual average coal production is improved by 12%. This collaborative response mechanism significantly enhances the working face stability and production continuity, and provides technical support and practical path for safe and efficient mining of deep mines under the threat of rock burst.

     

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