August 3，The open type of Xixiang Expressway jointly built by Railway Construction Heavy Industry and Sichuan Road and BridgeTBM“Shuchang No.1”Offline in Changsha, Hunan。“Shuchang No.1”The whole machine is about 170 meters long.，Excavation diameter up to 8.53 meters，It is the first synchronous parallel guide multi-support open type in southwest China.TBM。

Party Secretary of Sichuan Road and Bridge Construction Group Co., Ltd.、 Chairman Xiong Guobin delivered a speech

Secretary of the Party Committee of China Railway Construction Heavy Industry、Chairman、General Manager Zhao Hui delivered a speech

It is understood that，“Shuchang No.1”It will be applied to the parallel heading of Yanyuan Tunnel of Xichang-Shangri-La Expressway in Yanyuan County, Liangshan Prefecture, Sichuan Province.，“Yanyuan tunnel”As Xixiang Expressway“Nine super projects”One of them，The extremely unfavorable geology is diverse and changeable.，High requirements for ecological environment protection，The difficulty of construction can be called industry.“The ceiling”。

According to the geological characteristics of the project，Railway construction heavy industry combined with more than 100 setsTBMExperience in design and use，As well as the construction experience of similar projects at home and abroad，In the existing mature open typeTBMOn the basis of manufacturing，For“Shuchang No.1”Tailor-made steel segment support、Auxiliary propulsion、Innovated design of floor arch roofbolter etc.，To adapt to the fault fracture zone.、Large deformation of soft rock、Mud burst and water gushed、Low gas and other unfavorable geology，Ensure that the equipment is in suitable geological condition，Sustained、Equilibrium、Fast tunneling；In case of unfavorable geology，Pass safely and steadily，And that open type is greatly improve.TBMAbility to deal with complex geological excavation of highway tunnel。

The first synchronous parallel guide multi-support open type in southwest ChinaTBM“Shuchang No.1”

It is reported that，Xixiang Expressway Project，It is a happy line to improve the transportation conditions in ethnic minority areas.，It is the golden line to promote the development of regional superior resources and economic and social development.。“Shuchang No.1”Open typeTBMSuccessful development of，It combines a number of pioneering technologies that challenge world-class geological problems.，It's high-end、Intelligent、A Model Sample of Greening。Railway Construction Heavy Industry will continue to conduct safe and efficient excavation for Xixiang Expressway Project、Provide strong service guarantee for intelligent construction。