狭窄煤柱岩爆的影响因素分析  

Analysis on Influence Factors of Rock Burst in Narrow Coal Pillar

作　　者：赵志刚[1] 谭云亮[1] 潘岳[2] 王勇 

机构地区：[1]山东科技大学资源与环境工程学院 [2]青岛理工大学土木工程学院,山东青岛市266520 [3]胶南市建管处质检站,山东青岛市266400

出　　处：《矿业研究与开发》2006年第4期23-25,43,共4页Mining Research and Development

基　　金：国家自然科学基金重点项目(50534080);教育部重点实验室开放基金资助

摘　　要：将顶板视为中点有支承的弹性固结梁,将煤柱视为支座,形成了顶板-煤柱系统。在煤岩体本构关系中考虑应变梯度的影响,得到了煤柱的失稳判据,进而分析了煤柱岩爆的影响因素。分析表明,顶板的跨径、顶板的抗弯刚度、煤柱的尺寸、煤柱的脆性、煤岩材料的均匀性和矿物颗粒的大小是煤柱岩爆的重要影响因素。The roof of cavern is regarded as an elastic beam with support at the midpoint and the coal pillars are regarded as bearings so as to establishing a cavern roof- coal pillar system. The influence of strain gradient is taken into account in the constitutive relation of coal or rock, the instability criterion of coal pillar is given, the influence factors of rock burst in coal pillar are analyzed. It is indicated that the span and flexural stiffness of cavern roof, the dimension and brittleness of coal pillar, the uniformity of coal material and the size of mineral grain are the important factors influencing rock burst of coal pillar.

关 键 词：应变梯度理论 煤柱 岩爆 

分 类 号：TD324[矿业工程—矿井建设]