基于损伤–能量协同演化的煤动态破坏剧烈程度评价方法与分级标准研究

doi:10.3724/1000-6915.jrme.2025.0110

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摘要深部煤炭资源开发对保障国家能源安全具有重要意义，但深部环境下工程强扰动引发的煤岩动力灾害已成为制约煤炭资源安全开采的关键瓶颈。科学预测和评估煤体冲击破坏剧烈程度对其安全开发至关重要。为此，利用分离式霍普金森压杆（SHPB）试验系统对煤体进行动态冲击试验，得到煤体损伤–能量协同演化特征，定义广义储能性能指标k1与广义能量耗散性能指标k2，揭示应变率对煤体储能和耗散性能的响应机制。结合煤体宏、微观破坏特征，探讨煤冲击破坏剧烈程度，建立煤动态破坏剧烈程度评价标准。结果表明：煤体损伤–能量协同演化规律呈现显著的应变率效应。同时，应变率的增加加剧了煤体储能性能和耗散性能。煤体冲击破坏剧烈程度可由煤体破碎块度和碎块弹射程度综合表征，碎块弹射程度可依据k1值变化规律科学地划分为无弹射现象、轻微弹射、中等弹射和剧烈弹射4个等级；煤体破碎程度可依据k2值变化规律科学地划分为轻微破碎、中等破碎以及严重破碎3个等级。研究成果能够为深部煤炭开采扰动过程中的煤岩动力灾害预测与防控提供理论支撑与参考依据。

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	白云1
	高峰1
	钮月1
	2
	罗宁3
	张志镇3
	苏善杰4
	滕腾5
	侯鹏6

关键词 ：采矿工程；煤岩动力灾害；损伤&ndash, 能量协同演化；动态破坏烈度；应变率效应；储能性能与耗散性能

Abstract：The development of deep coal resources is of great strategic significance to ensure national energy security. However, the coal-rock dynamic disaster caused by intense engineering disturbance in deep environment has become a key bottleneck restricting the safe mining of coal resources. Accurate prediction and assessment of coal impact failure intensity becomes crucial for secure resource extraction. Therefore, in this paper, the dynamic impact test of coal was carried out by using the split Hopkinson pressure bar (SHPB) test system, and the damage-energy co-evolution characteristics were obtained. The generalized energy storage performance index k1 and the generalized energy dissipation performance index k2 were defined, and the response mechanism of strain rate to energy storage and dissipation performance of coal was revealed. Combined with the macro and micro failure characteristics, the coal impact failure intensity was discussed, and the dynamic failure intensity evaluation standard was established. The results show that the damage-energy co-evolution law of coal presents a significant strain rate effect. At the same time, the increase of strain rate enhances the energy storage performance and dissipation performance of coal. The coal impact failure intensity can be comprehensively characterized by the fragmentation and ejection degree of coal. Based on the variation of k1 value, the ejection degree of coal fragments can be scientifically divided into four grades: no ejection phenomenon, slight ejection, medium ejection and severe ejection. The degree of coal crushing can be scientifically divided into three grades: slight crushing, medium crushing and severe crushing according to the variation law of k2 value. These findings provide theoretical support and reference for the prediction and prevention of coal-rock dynamic disasters in the process of deep coal mining disturbance.

Key words： mining engineering coal-rock dynamic disaster damage-energy co-evolution dynamic failure intensity strain rate effect energy storage performance and dissipation performance

引用本文:

白云1，高峰1，钮月1，2，罗宁3，张志镇3，苏善杰4，滕腾5，侯鹏6. 基于损伤–能量协同演化的煤动态破坏剧烈程度评价方法与分级标准研究[J]. 岩石力学与工程学报, 2025, 44(7): 1869-1884.
BAI Yun1, GAO Feng1, NIU Yue1, 2, LUO Ning3, ZHANG Zhizhen3, SU Shanjie4, TENG Teng5, HOU Peng6. Evaluation method and classification standard of coal dynamic failure intensity based on damage-energy co-evolution#br#. , 2025, 44(7): 1869-1884.

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https://rockmech.whrsm.ac.cn/CN/10.3724/1000-6915.jrme.2025.0110 或 https://rockmech.whrsm.ac.cn/CN/Y2025/V44/I7/1869

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