煤与瓦斯突出危险性综合判识方法研究  

Research on comprehensive judgment method of coal and gas outburst danger

作　　者：杨守国[1,2] 李正禄[1,2] 金洪伟[1,2] 

机构地区：[1]西安科技大学,陕西西安710054 [2]西部矿井开采及灾害防治教育部重点实验室,陕西西安710054

出　　处：《中州煤炭》2016年第9期16-19,共4页Zhongzhou Coal

基　　金：国家自然科学基金青年项目(51404190);陕西省科技计划经费资助项目(2013K11-20);陕西省教育厅科研计划项目资助(2013JK0868);中国博士后基金资助项目(2013M542366)

摘　　要：针对我国现采用的煤与瓦斯突出鉴定方法不能准确判定煤层是否具有煤与瓦斯突出危险性的问题,基于煤与瓦斯突出的演化过程,建立了煤与瓦斯突出激发过程的极限平衡方程,推导出了激发突出的判据关系式,表明突出发生与否直接与煤体强度、瓦斯压力、煤层方向应力和顶板支承压力相关,并与采高、支护作用等因素间接关联。结合典型的煤层物理力学和瓦斯参数,采用现有突出危险性鉴定方法和所建立的综合判识方法分别进行计算,并利用数值模拟方法进行验证,得出的综合判识方法对煤与瓦斯突出危险性的评价更为准确。a According to the coal and gas outburst identification method which is used in our country, it is not accurate to determine whether the coal seam has the danger of coal and gas outburst.In this paper,based on the evolution of coal and gas outburst,the limit e？quilibrium equation of coal and gas outburst was established, which shows that the coal and gas outburst is directly related to the strength of coal,the gas pressure,the direction of the pressure in coal seam,the support pressure of the roof,thickness of coal seam and support manner.Combined with typical coalbed physical mechanics and gas parameters,the current outburst risk identification method and the comprehensive identification method were used to calculate respectively,and numerical simulation method was also used,which all approved the comprehensive judgment method for identification of coal and gas outburst risk evaluation more accurate.

关 键 词：煤与瓦斯突出 突出机理 综合判识 数值模拟 

分 类 号：TD713.2[矿业工程—矿井通风与安全]