摘要
针对硬煤顶煤冒放性问题 ,从理论上系统分析了顶煤破坏裂缝发展、传播条件 ,阐明了为提高顶煤冒放性 ,采用预松动措施促进煤体裂隙扩展能量补偿的设计原理和参数。通过两种实例分析 ,说明了能量补偿原理的应用效果和前景。
The development and propagation conditions of top coal damage crack are systematically analysed in theory. The design principle and parameters of prerelaxation are used to promote the energy compensation for fissure extension in order to improve the character of top coal fall. Finally, the application effects and prospects of energy compensation principle are illustrated with two practical examples.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2000年第4期440-443,共4页
Chinese Journal of Rock Mechanics and Engineering
基金
霍英东教育基金会资助!项目 (710 76 )
关键词
坚硬顶煤
冒放性
裂隙扩展
能量补偿
top hard coal, character of top coal fall, fissure extension, rate of recovery
