摘要
为便于利用尖点突变理论对小浪底库区附近采空区的稳定性、失稳临界条件及失稳时能量释放机制进行计算分析,将采空区顶板、煤柱、底板看成一个系统,建立简化力学模型。在研究过程中,引入水致弱化函数,确立了尖点突变理论模型,导出了小浪底库区附近采空区在库水渗透及软化作用下失稳的充要条件表达式,并根据模型对采空区失稳时的释能机制进行了分析,研究表明:采空区失稳时能量释放只与系统本身特性相关,与外部条件作用没有关系。
In this paper,to soundly calculate and analyze the stability,the instability critical conditions and the energy release mechanisms in instability of the mined out area around Xiaolangdi reservoir according to cusp catastrophic theory,the roof,coal pillar and the bottom of the mined-out area is considered as a system and the simplified mechanical model is established. In the study process,the water weakening function is introduced to determine the cusp catastrophic model,deducing the formula of fully essential condition for destabilization under penetration and softening effect of the mined-out areas around the flood areas of the Xiaolangdi reservoir and furthermore the energy release mechanism of the mined-out sudden instability is analyzed according to the cusp catastrophic model. The research indicates that the energy release due to instability of the mined-out areas is only dependent on its internal conditions and independent of the external function.
作者
高鹏翔
GAO Pengxiang(Institute of Architecture and Surveying,Shanxi Datong University Datong,Shanxi 03700)
出处
《工业安全与环保》
2018年第6期32-35,共4页
Industrial Safety and Environmental Protection
基金
国家自然科学基金(51474205)
关键词
稳定性
尖点突变模型
释能机制
采空区
stability cusp
catastrophic model
energy release
mechanism mined
out area
