摘要
本文依据作者实验部分成果,建立了瓦斯煤体的失稳数值模型,结合湖南红卫煤矿资料,分析了应力集中、瓦斯压对煤体失稳的影响,以此数值计算为依据,结合实验,对煤与瓦斯突出杌理进行了分析,并得出了突出煤层存在临界孔隙压力值以及突出发生前屏障区的存在。这样,为防止瓦斯与煤突出的卸压,抽放工艺找到了定量依据。图3,表2,参6。
On the basis of author's experiment results, this paper established instable numerical model of methane and coal. then, the influence of instability of methane and coal effected by methane pressure and concentrating stress are considered. Finally, bump coal existing the critical pore methane pressure and existing protective screen section are considered. These quantitive indexes guide scientific working and provide qnantitive foundation—why dowe unloading and dispatch methane for avoiding methane and coal bump. 3figs., 2tabs., 6refs.
出处
《湘潭矿业学院学报》
CAS
1993年第3期8-14,共7页
Journal of Xiangtan Mining Institute
关键词
煤突出
瓦斯突出
数值分析
bump
instability
critical methane pressure
concentrating stress
numerical analysis
