IMECH-IR  > 流固耦合系统力学重点实验室
Alternative TitleAcoustic Emission Warning Signals Change Law Research during Deformation and Failure of Gassy Coal Rock
肖晓春; 朱洪伟; 潘一山; 徐军; 罗浩; 吕祥锋
Source Publication中国安全科学学报
Other AbstractIn order to improve the mine gas outburst prediction accuracy, AE warning signal variation in the process of gas-coal deformation and fracture was studied using laboratory experimental methods and standard coal samples. The study results show that after the confining pressure of coal increases, coal crack changes gradually from brittle failure under low confining pressure to ductile failure under high surrounding stress, that by the AE signal can predict the time of coal failure in advance, that the mechanical and non-mechanical effect of gas on the coal mechanical properties and deformation characteristics increase with the gas pressure increasing, that when gas pressure increases, coal cracks more rapidly, AE energy accumulated releases rapidly, time coverage period of AE signal high ring count value becomes longer, and that the AE warning signal can reflect gas-coal instability timely.
Keyword瓦斯煤岩 变形破裂 声发射(Ae) 振铃计数 预警信号
Subject Area岩体力学和土力学
Indexed ByCSCD
Funding Organization国家自然科学基金青年项目资助(51004061);2011年辽宁省教育厅科学研究一般项目资助(L2011049);国家大学生创新创业训练计划项目(201210147011)
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Document Type期刊论文
Corresponding Author肖晓春
Recommended Citation
GB/T 7714
肖晓春,朱洪伟,潘一山,等. 瓦斯煤岩变形破裂过程声发射预警信号变化规律研究[J]. 中国安全科学学报,2013,23(6):122-127.
APA 肖晓春,朱洪伟,潘一山,徐军,罗浩,&吕祥锋.(2013).瓦斯煤岩变形破裂过程声发射预警信号变化规律研究.中国安全科学学报,23(6),122-127.
MLA 肖晓春,et al."瓦斯煤岩变形破裂过程声发射预警信号变化规律研究".中国安全科学学报 23.6(2013):122-127.
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