Research on refuge escape model and equipment for large mine field of Shendong

In order to change the present situation that the existing refuge escape model can't meet the refuge escape needs of Shendong with large mine field, the paper analyzed the problems existing in the front, middle and end of the escape route and promoted the refuge escape model“ movable lifesaving transition station + permanent refuge chamber + escape channel" , caleculated the key parameters of escape route and matched equipment for the key nodes. Based on the escape time and the level of construction technology , the equipment selection method for escape channel was promoted. The paper researched the large diameter pre-bored technology which mainly composed by borehole verticality integrated control technology and longtime stable protecting technology for large diameter hole. Vehicle rescue lifting system was developed and demonstration project was constructed in Daliuta mine of Shenhua Shendong Coal Group.The result showed that the pre-bored hole connected the refuge chamber smoothly for the inclination was only 0. 102% , the vehicle rescue lifting system worked well, the escape route covering the whole course from the mining face to the surface was formed and meet the refuge escape needs of large well, the escape route covering the whole course from the mining face to the surface was formed and meet the refuge escape needs of large mine field.