伪斜柔性支架工作面通风方式对采空区自然发火影响

The Study of the Inlluence of Pseudo-slope Soft Shield Support Working-face on the SpontaneousIgnition in the Gob

在水模拟实验及示踪显影实验的基础上,研究了上、下行通风方式对急倾斜煤层伪斜柔性支架工作面采空区自然发火的不同影响,得出结论:下行通风对防止急倾斜伪斜柔性支架工作面采空区自然发火极为有利;另外,上行通风在坡道与工作面汇交处存在增加自然发火危险性的“气动闸阀”效应,而下行通风不存在.

On the basis of water simulation experiment and trace developing-out experiment, the paper studies comparatively the different effect of the ascensional ventilation and descentional ventilation system of the steep coal-seam pseudo-slope soft shield support workig-face on the spontaneous ignition in the gob and draws to some conclusions: the descentional ventilation system is most favourable for the prevention of spontaneous ignition in the worked-out area of the pseudo slope soft shield support working-face. In addition, the ascensional ventilation system has the ' gas-valve' effect at the intersecting place of the ramp and the working-face increases the danger of spontaneous ignition, which the descentional ventilation system does not have.