November tenth，State Railway Group held“Look at the changes along the railway”Theme Publicity Conference on Accelerating Railway Construction in Western China，The Chengdu-Lanzhou Railway is introduced in the form of video.、Chengdu-Chongqing Middle Line high-speed railway.、Xi'an-Chongqing high-speed railway、Construction of Chongqing-Kunming high-speed railway and other projects。
Chengdu-Chongqing Middle Line high-speed railway.——After completion, the direct travel time between Chengdu and Chongqing will be shortened to one hour.
▲Schematic Diagram of Chengdu-Chongqing Middle Line。 Map provided by Chengdu Bureau Group Company。
The newly-built Chengdu-Chongqing Middle Line is located in Chongqing Municipality and Sichuan Province.，It is an important part of the Shanghai-Chongqing-Chengdu high-speed railway.，It is a high-speed railway undertaking inter-regional long-distance passenger flow and Chengdu-Chongqing direct inter-city passenger flow.。The line is drawn westward from Chongqing North Station, the hub of Chongqing.，Via the west(Chongqing)Science City、Copper beam、Dazu enters Sichuan Province，By Anyue、Lezhi、Introduction of Jianzhou New Town into Chengdu Hub Chengdu Station。Length of main line 291.315 kilometers，Among them, the length of Chongqing is 102.698 kilometers，Chang188 in Sichuan Province.617 kilometers。6 new stations on the main line，Respectively for the west(Chongqing)Science City、Copper beam、Dazu Rock Carvings、Anyue、Lezhi、Jane State，Introduce 2 existing stations，Chongqing North Railway Station、Chengdu station，A new Shiling South Station is set up in the general speed relocation project.。
Wang Weigao, Commander of Chengdu-Chongqing Middle Line Railway Command of Sichuan Railway Group along the Yangtze River, introduced.，The Chengdu-Chongqing Middle Line will be the highest construction standard in China at present.、The fastest running high-speed railway。After the completion of the project，The direct travel time between Chengdu and Chongqing will be further shortened to less than one hour.，It only takes about 6 hours from Chongqing to Shanghai.。Strategy for serving the country，Construction of Sichuan-Chongqing Integrated Transportation System，Strengthen the dual-core leadership of Chengdu and Chongqing、Regional linkage，Co-construction“The Belt and Road”And that development of the Yangtze riv economic belt，Promoting the Development of the Western Region in the New Era and Forming a New Pattern，It is of great significance.。
Xi'an-Chongqing high-speed railway——It will optimize the layout of regional road network and promote regional economic and social development.
▲Sketch Map of high-speed railway in Western Chongqing。Map provided by Chengdu Bureau Group Company。
The line of Kangyu section of Xiyu high-speed railway is drawn from Ankang West Station of Xikang high-speed railway under construction.，After passing through Langao, it crosses Daba Mountain and enters Chongqing.，After passing through Chengkou, it enters Sichuan Province.，By Xuanhan、Dazhou、Big Bamboo、Guang'an returned to Chongqing，After passing through Hechuan、Beibei is introduced into Chongqing West Railway Station, the hub of Chongqing。
Kangyu Section of West Chongqing high-speed railway is located in Ankangxi、Langao、Chengkou、Fan Kuai、Xuan Hannan、Dazhou South、Big Bamboo、Guang'andong、Hechuan East、Beibei South、Chongqing West and other 11stations，Among them, Chongqing West、Ankang West is an existing station.，Others are new stations。
Wang Junlou, Chief Engineer of Dazhou Command of Xikun Company of Beijing-Kunming high-speed railway, introduced.，The line mainly passes through the Ankang Basin.、Daba Mountain area、Three Geomorphological Units in the Parallel Ridge-Valley Region of Eastern Sichuan，It is the first railway crossing the hinterland of Daba Mountain so far.。
Simultaneous construction of Wanzhou connecting line，It links up with the Zhengzhou-Wanzhou high-speed railway which has been put into operation and the Chongqing-Wanzhou high-speed railway which has already started construction.，The interconnection of the high-speed rail network will be realized.，To optimize the layout of regional road network、It is of positive significance to promote regional economic and social development.。After the completion of the project，It will further improve the national comprehensive three-dimensional transportation network.，Strengthening the Chengdu-Chongqing Two-city Economic Circle and Guanzhong、Linkage between Urban Agglomerations in Central Yunnan，To form a high-speed railway corridor with the Beijing-Tianjin-Hebei Economic Zone，Enhance the radiation-driven role of the central city in the surrounding areas，Promote regional economic and social coordination and high-quality economic and social development along the line.。
Chongqing-Kunming high-speed railway——The Chongqing-Yibin section has completed all subgrade earthwork construction.
▲Sketch map of Chongqing-Kunming high-speed railway.。Map provided by Chengdu Bureau Group Company。
The Chongqing-Kunming high-speed railway line is 699 kilometers long.，379 mainline bridges/210 kilometers，85 tunnels/348 kilometers，The ratio of bridge to tunnel is 80%。Chongqing to Yibin section and Yibin to Kunming section。
Wang Junlou introduced，Construction of the Chongqing-Yibin section will commence in December 2020.，Duration 4.5 years。This section has completed all subgrade earthwork construction.;194 bridges/About 110 kilometers，97 km completed，About 89% of the design%，2090 holes completed for beam fabrication，70%%;1678 holes completed for beam erection，About 56%;There are 10 tunnels/About 16.Six kilometers，Completed about 12.Four kilometers，About 75% of the design amount%，Six tunnels have been completed.。
The construction of the Yibin-Kunming section started in September 2021.，The construction period is 6 years。328 construction sites have been started.，Accounting for 70% of the planned construction site%。Earthwork completed 606.400,000 cubic meters，About 20% of the design amount%;185 bridges/About 81 kilometers，Complete 13700 linear meters，About 17%;33 holes for fabrication and erection of beam，1% of design.8%;75 tunnels/About 361 kilometers，Complete about 4.Seven kilometers，Accounting for 13 of the design quantity%，Two tunnels have been completed.。【Source：Chongqing Daily】
