The Sunjiazhai Coalbed Tunnel Of Zhengsheng Expressway Construction Technology

The fast development constructs which along with the present domestic highway,the tunnel increases day by day in highway application,carried on the tunnel construction in the coal formation stratum land sector still the not mature construction safety control measure,this article in detail Sunji- azhai coat bed tunnel succeeded the construction control technology,will have certain model function to the next similar project construction.