Breakthrough! Completion of the First Tunnel of Jinjian Railway

Recently，The first tunnel of Jinjian Railway——Successful completion of Zixiwu No.1 Tunnel，It marks a breakthrough in the construction of the railway.。

There are 22 tunnels on the main line of Jinjian Railway.，The total length is about 21.5 kilometers，Among them, there are 14 double-track tunnels, totaling about 20.Three kilometers；8 single-track tunnels, about 1.2 km。

The total length of Zixiwu No.1 Tunnel is 115.9 meters，It is a single-track tunnel。The tunnel passes through a gentle denudation hill.，The terrain is undulating.，The mountain is mostly covered by Quaternary soil.，The vegetation is luxuriant；The whole tunnel isⅤGrade surrounding rock，Ring excavation with reserved core soil method is adopted for construction.。

During construction，For geological problems，Adopt advanced geological prediction(TPS)、Strengthen monitoring and measurement management and other technical means.，According to“Short footage、Weak disturbance、Strong support、Early closure”Construction principles，Efficiently promote the construction of each process，The safe and smooth penetration of the tunnel was realized.。

Jinjian Railway is located in the southwest of Zhejiang Province.，Total length 64.51 kilometers，It is a double-track railway with a design speed of 250 kilometers per hour.。The line is led out from the existing Jinhua Station.，To the north through Lanxi City、Jiande City，Connect to Hangzhou-Huanghai high-speed railway at Jiande Station.，Jinhua is located along the line、Lanxi East、Ocean、Jiande and other 4 stations，Among them, Lanxi East Station and Dayang Station are new stations.。

Jinjian Railway is located in the central Zhejiang urban agglomeration.，Yes“Huangshan to Jinhua”Components of the railway corridor，Constructing the Framework of Railway Network in Zhejiang Province，Improve the layout of the Yangtze River Delta road network，Improving the flexibility of railway transportation plays an important role.。

At the same time，After the completion of the railway, the Yangtze River Delta region will“Wanjiang Economic Belt”“Huangshan Tourism Economic Circle”“Central Zhejiang Urban Agglomeration”“Wenzhou Economic Circle”And other economic circles are closely linked.，To realize the linkage development of multiple economic circles、It is of positive significance to integrate regional tourism resources.。

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