The first main tunnel of changjinghuang railway has been successfully completed

On December 31, Zhaishan tunnel, the first main tunnel in the whole line of changjinghuang railway, was successfully completed, marking that the construction of changjinghuang railway has achieved phased results and laid a solid foundation for the completion of the whole line on schedule.

it is understood that the changjinghuang railway starts from Nanchang East Station and ends at Huangshan north station. The main line is about 286km long and the design speed is 350km / h. After the completion and opening of the railway, it can connect five high-speed rail lines, i.e. Shanghai Kunming, Beijing Jiulong, Hangzhou Huanglong, Chihuang and Hangzhou Linji, which will further improve the construction of regional high-speed rail network and promote regional economic development.

it is reported that the Zhaishan tunnel of changjinghuang railway is located in jinzipai Town, Qimen County, Anhui Province. It is a single hole double line tunnel with a total length of 401.78 meters and a maximum buried depth of 56.38 meters. It is constructed by the first company of China Railway Eighth Bureau. The terrain of the tunnel is fluctuant, there are various adverse factors such as traffic difficulties and no road at the exit. During the construction, the first company of China Railway No.8 Engineering Group Co., Ltd. adjusted the drilling and blasting parameters in time, combined the advanced geological prediction and monitoring measurement to carry out real-time monitoring, ensuring the excavation efficiency and blasting safety of conglomerate surrounding rock.