Abstract:

According to the technological mining conditions of the roof and bottom pillar in Xincheng gold mine , the calculation formula of maximum deformation and horizontal critical load on artificial roof have been deduced by applying limit analytical method. The stability of the roof and bottom pillar has been monitored. During the test , the YZYof drilling hole st ress sensor with st rain and rigidity and the ast rictive meter have been used and tested separately the variation of st ress in the rock and the cooling strain in the drift road. A effective method has been t racked out for monitoring the stability of the analogical pillars.

Key words: artificial roof, stability, maximum deformation, ext reme load, monitoring