摘要
条带开采煤柱的稳定与否是条带开采成败的关键.其破坏失稳是典型的偏离平衡态的非线性过程.应用突变理论建立了条带煤柱突变破坏失稳的尖点突变模型,导出了条带煤柱破坏失稳的充要条件表达式.并根据模型对条带煤柱破坏失稳的机理进行了分析,认为条带煤柱核区率≤11.92%时,满足了条带煤柱突变失稳的必要条件,存在突变破坏失稳的可能性.
Whether the strip coal pillar is stable or not is one of the key problems of strip-partial mining. The instability of strip coal pillar is a typical nonlinear process. By applying catastrophic theory, a cusp catastrophic model for failure instability of strip coal pillar was set up. The formula of fully essential condition for instability failure of strip coal pillar was derived. Furthermore, the instability mechanism of strip coal pillar was analyzed according to the cusp catastrophic model. The model indicates that when the kernel pillar ratio is less than 11.92%, there is the probability of catastrophic instability.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2005年第1期77-81,共5页
Journal of China University of Mining & Technology
基金
国家自然科学基金项目(50474064)
河南省自然科学基金项目(041105020)
