朱建波,郑福润,谢和平,周宏伟,张茹,马斌文,张修峰,公维国

• 1:深圳大学深地工程智能建造与健康运维全国重点实验室
• 2:深圳大学广东省深地科学与地热能开发利用重点实验室
• 3:深圳大学深地科学与绿色能源研究院
• 4:中国矿业大学(北京)力学与土木工程学院

摘要(Abstract)：

矿震应力波传播衰减规律是准确评估矿震致灾性的重要理论基础。为明确煤矿矿震的震动效应,并为矿震风险评估提供理论依据,开展了矿震应力波传播衰减理论模型及其应用的研究。首先,建立考虑几何衰减系数、材料衰减系数和地应力影响的矿震应力波传播衰减理论模型。随后,以石拉乌素煤矿为工程背景,采取室内试验与现场监测相结合的方法,测定了地层材料衰减系数,研究地应力对传播衰减模型的影响,构建了适用于该矿的矿震应力波传播衰减模型,并将该模型应用于现场矿震震级的估算,验证了模型的可靠性。研究结果表明:模型中几何衰减系数与矿震震级、波阵面的扩散以及应力波在非连续面中的散射相关;材料衰减系数与地层介质黏弹性、地层波速和应力波频率有关,地应力对传播衰减模型材料衰减系数有显著影响。基于提出的矿震应力波传播衰减模型,估算了石拉乌素煤矿矿震震级,与地震局预报的震级结果具有较好的一致性,验证了该模型在实际应用中的可靠性。根据应力波传播衰减理论模型和震级能量关系,得到了不同震级矿震的应力波传播衰减规律的预测结果。研究结果为理解矿震应力波传播衰减规律提供了理论基础,对评价矿震风险具有指导意义。

关键词(KeyWords)： 矿震;应力波;传播衰减模型;地应力;峰值振动速度

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划资助项目(2022YFC3004602);; 国家自然科学基金资助项目(52325404);; 珠江人才计划引进创新创业团队资助项目(2019ZT08G315);; 山东能源集团2022年揭榜挂帅资助项目(SNKJ2022A01-R26);; 深圳市基础研究资助项目(JCYJ20220818095605012);; 深圳大学2035卓越研究计划资助项目(2022B001)

作者(Author): 朱建波,郑福润,谢和平,周宏伟,张茹,马斌文,张修峰,公维国

DOI: 10.13532/j.jmsce.cn10-1638/td.2024-1409

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