该矿井系78年投产的一对箕斗井,设计能力为30万t/年。绝对瓦斯量1.15m~3/min,相对瓦斯量1.18m~3/t,煤生爆炸指数42.8%,压入式通风。一、事故发生前后1980年12月29日11点,事故发生于该井+100水平集中大巷施工的105掘进工作面。105掘进工作面在二井+100水平集中大巷施工,80年10月15日开工,到12月29日进延米165m,19日新二班15点迎头遇到地质构造,煤冒顶,新三班工人作业时感到呼吸困难,20点左右把瓦斯检查员找来,检查结果发现:顶板 CH_4 10%以上,扒斗机 The mine was put into operation for 78 years and has a design capacity of 300,000 t / y. The absolute gas volume is 1.15m ~ 3 / min, the relative gas volume is 1.18m ~ 3 / t, and the coal explosion index is 42.8%. First, the accident occurred before and after December 11, 1980 at 11 o’clock on the 29th, the accident occurred in the well +100 horizontal tunnel construction 105 heading face. 105 heading face construction in the well +100 horizontal concentration of the lane construction, started on October 15, 80, to extend the 165 meters on December 29, on the 19th new class 15 at the head met geological structure, coal roof, the new three Class workers feel breathing difficulty when homework, gas inspector about 20 o’clock to find, check the results found: 10% above the roof CH_4, Scatcher