摘要
本文分析了恩洪矿C_9煤层304工作面矿压动态变化与瓦斯涌出规律,阐述了无坚硬厚岩层顶板工作面的周期性矿压显现的原因。
By analysing and studying the underground pressure dynamic change and methane emission regularity at working face 302 in seamC_9 of Enhong colliery, this paper presents thatthe methane emission in the superjacent seamshows a periodic variation with the dynamicchange of ground pressure at face. It also anal-ysed the caving procedure of superjacent strataand expounded that the periodic ground pres-sure of the roof strata without thick competentbed is resulted from the breakage of the overly-ing cantilevered built-up rock beam. To makeuse of the regularity of gas emisson that de-pends upon the ground pressure dynamics is re-markable significant to the roof control and tothe prevention and treatment of gas.
出处
《矿山压力与顶板管理》
1992年第3期35-39,79-81,共5页
Ground Pressure and Strata Control
