摘要
本文采用三维有限元法分析了周期来压不同工作面长度对底板影响的应力分布规律,计算结果与井下压力作用符合。最后根据分析结论提出了防治底板承压水的建议。
In this paper, the three dimeusional finite element method is applied to analyse the stress distribution laws of periodic weighting of different face lengths on the floor. The computation result is highly in accord with the pressure action of the floor. Lastly, the suggestions of the prevention of the floor confined water irruption is presented to combine the on—the—spot materials
出处
《山东矿业学院学报》
CAS
1989年第2期9-13,共5页
Journal of Shandong University of Science and Technology(Natural Science)
关键词
煤层底板
应力分布
有限元法
finite element method
seam floor
stress concentration
security coefficient
