摘要
底板突水过程实际上是水压驱动下岩层裂纹萌生、扩展、贯通,直到最后断裂导致失稳破裂的过程。本文通过正交试验法设计了9个计算模型,并对UDEC数值模拟结果进行极差分析,从而得出采场底板岩体裂隙发育深度影响因素的敏感性顺序为:隔水层强度>原岩应力>原生裂隙度>采面长度>承压水压>采高。该结果对承压水体上采煤的底板裂隙发育能够定性判别,从而实现安全生产。
Floor water invasion process actually is rock crack Initiation and extended and transfixion by water drive,and until Fracture lead to Instability.this paper design 9 calculation models by orthogonal test,and do range analysis about UDEC calculation results,and obtain the sensitivity sequence that is on influencing factors of the fracture development depth in coal bed floor rock is aquifuge strength rock stress preexisting fissures degree mining faces length artesian pressure mining height.The result can qualitative discriminate the fracture development depth in Coal bed floor rock on the Top of water-pressured.
出处
《华北科技学院学报》
2011年第4期27-29,共3页
Journal of North China Institute of Science and Technology
关键词
采场底板
裂隙
影响因素
敏感性
Stope Floor
Fracture
Influencing Factors
Sensitivity
