THE UNDERGROUND MINING EFFECT ON NO.301 NATIONAL HIGHWAY OF DAYAN SECOND COAL MINE

Through the effect results prediction on the road when coal mining under the national highway,combining with the geological and hydrological condition,the effect of underground coal mining on the national highway was analyzed in this paper.and thinking from the point of technical,that coal mining can do normally without leaving coal column under the national highway,and the feasible fafety measures were praised.