Present situation and developing prospects of mining under primary road

With the study of `mining under buildings, railways and water-bodies´, this paper summarized the actual state of mining under primary road at home and abroad, introduced the damage to primary road which effected by mining underground, recommend the design formulas of damage to primary road and the protecting standard and protective measures of primary road which effected by mining underground. Aiming at the shortage of research on mining under primary road at home and abroad in current, this paper proposed the research directions of mining under primary road in the future deeply with the actual needs of the fabricating yard.