摘要
在建立的支承压力分布黏弹性损伤模型基础上,对工作面煤壁前方及侧向实体煤的支承压力分布进行了解析.研究结果表明,支承压力分布与一次开采煤层厚度相关,其峰值大小与一次采厚成反比,峰值距煤壁的距离与一次采厚成正比,即随一次采厚的增加,支承压力分布范围增大,而峰值强度降低;侧向支承压力分布与时间具有一定的相关性.
Based on the model of abutment pressure distribution viscoelastic damage, analyzed the distribution of the abutment pressure that be forward of or side of the working face. Results of the research show that the distribution of abutment pressure correlates on the thickness of the coal seam. The size of the abutment pressure peak is inversely proportional to the first mining thickness, and the distance between peak and working face is proportional to the first mining thickness, that is to say peak intensity falls as soon as the distribution range spreads. The distribution of side abutment pressure has correlation with time someway.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2008年第4期361-363,共3页
Journal of China Coal Society
基金
国家自然科学基金资助项目(50674003)
"十一五"国家科技支撑计划资助项目(2006BAK03B06)
国家重点基础研究发展计划(973)资助项目(2005CB221503)
关键词
支承压力
采厚
黏弹性
损伤
abutment pressure
mining thickness
viscoelasticity
damage
