The paper briefly introduces three kinds of support patterns applied receding from eyeframe passageway in the fully mechanized coal face and their scope applied,merit and shortcoming separately,even putting forward how to make sure reasonable of pay and protect technique parameter according to the actual circumstance of tunnel in Pinggang coal mine.

Some points including adjusting mining,mesh placement,upper port carrying framed timber constructing,support design of removing roadway,etc.

By means of describing the characters of manifold different ropeway man car in coal mine,this paper introduced the way to developing a new type long distance and high transporting capacity superterranean ropeway with suspending-chair device which can be hung and carried down in the narrow section and undulate tunnel underground coal mine.

A dynamic model of overhead cable for ropeway is developed, i.

A dynamic model of overhead cable for ropeway is developed together with differential equations of its vibration and initial and boundary conditions.

The analysis of shaking reason for the pedestrian bridge in chongqing and comparison of the reinforcement method;