论文部分内容阅读
在我国,随着新建矿井的增加和老矿井的延深,煤与瓦斯突出等动力现象发生的次数愈来愈多,强度愈来愈大。在所有煤与瓦斯突出的动力现象中,石门揭煤时发生的煤与瓦斯突出是强度最高和危险性最大的。如1975年8月8日在四川天府矿务局三汇坝一矿所发生的12,730吨煤突出就是在石门揭煤时发生的。分析有关资料可知,石门揭煤时发生的煤与瓦斯突出的
In our country, with the increase of new mines and the deepening of old mines, the number of dynamic phenomena such as coal and gas outburst is more and more frequent and the intensity is getting bigger and bigger. Among all the coal and gas outbursts, coal and gas outbursts occurred during the uncovering of Shimen are the strongest and most dangerous. For example, 12,730 tons of coal that occurred at the Sanhuiba Mine in Sichuan Tianfu Mining Bureau on August 8, 1975 were highlighted at the time of exposing the coal in Shek Mun. Analysis of the relevant information shows that the coal and gas outburst occurred when the stone door uncovering coal