煤与瓦斯突出危险性综合判识方法研究.pdfVIP

2016年 第 9 期 中州煤炭 总 第 249期 煤与瓦斯突出危险性综合判识方法研究 楊 守 孺 ,李：E祿1 _，2，金躁伟1 (1.西安科技大学，陕 西 西 安 _7_10054 ; 2 .西部矿井开采及灾害餘治教育部重点实验家,_酶西西安710054 ) 摘要：针对我厘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，基于媒与瓦斯突出的演fc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媒体 虽度、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。结合典型的媒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fE ,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。 关键词：煤与瓦斯突出；突出机理；综合判琪;数值模拟 中图分类号:TD713.2 文献标志码 : A 文章编号 = 1003-0506 (2016) 09-0016-04 Research on comprehensive judgment method of coal and gas outburst danger Y an g Shouguo1,2 ,L i Z henglu1,2, Jin Hongvrei1,2 ( l.X ia n University of Science and Technology ,X ir an 710054, CAma ； 2.Key Laboratory of Western Mine Exploitation and Disaster Prevention and Control of Ministry of Education,Xiran 110054, China) Abstract According to ： the coal and gas outburst identification method M-hich is used in our countiy, it is not accurate to detennine M-hether 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 M-as established, M-hich show-s 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 M-ith typical coalbed physical mechanics and gas parameters, the cuiTent outburst risk identification method and the comprehensive identification method M-ere used to calculate respectively, and numerical simulation method was also used, M^hich