Since this year，Chongqing Railway Investment Group earnestly fulfills the main responsibility of railway construction enterprises in the whole city，As the owner of Chongqing Holding Project of Lushi Joint Venture Railway，Accelerating the Chongqing-Qianjiang Section of Chongqing-Hunan High-speed Railway、Chongqing-Wanzhou high-speed railway、Wanzhou-Fankuai Section of Western Chongqing High-speed Railway、Reconstruction Project of Chengdu-Chongqing Railway from Chongqing Station to Jiangjin Station、San Tin Port Railway Collection and Distribution Center、Construction of 6 projects such as Chongqing East Railway Station Railway Comprehensive Transportation Hub，1-Investment completed in March 44.6.3 billion yuan，Successfully completed the first quarter construction target，Year-on-year growth of 35.7%。At the same time, it serves as the actual manager of Chongqing's investment in railway projects.，Cooperate to promote the Chongqing-Kunming high-speed railway、Chengdu-Chongqing Middle Line High-speed Railway、Chongqing-Ankang Section of Western Chongqing High-speed Railway、Construction of 4 projects including Chengdu-Dawan High-speed Railway，1-Investment completed in March 17.400 million yuan，Year-on-year growth of 116%。

Chongqing-Qianjiang Section of Chongqing-Hunan High-speed Railway

First quarter，Chongqing-Qianjiang Section of Chongqing-Hunan High-speed Railway Project Completed a Total of 44 Subgrade Earthwork%、Bridge 80%、Main hole 75%；The delivery of land for the main line and house demolition have been completed.，Delivery of temporary land 98%，“Three electricity”And integrated pipeline accumulatively completed 88%；Kaili completed an investment of 21.6 billion yuan。

The early morning of March 24，After 28 months of hard work.，Builders overcome karst、Fault、Water and mud inrush、Collapse and other adverse conditions.，It passes through 19 karst caves successively.，The 5802-meter-long Liujiaping Tunnel was successfully completed.，It has become the first long tunnel over 5000 meters from Chongqing to Qianjiang.。

Chongqing-Wanzhou high-speed railway

By the end of the first quarter，Subgrade earthwork of Chongqing-Wanzhou High-speed Railway Project completed a total of 33.80,000 square meters，A total of 2,529 bridge pile foundations have been completed，A total of 18 piers and abutments have been completed，Tunnel engineering excavation completed accumulatively 858.6 meters，Cumulative completion of 851 auxiliary tunnels.9 meters。March 29，The pile foundation of the main tower of the Shituo Yangtze River Bridge, the control project of the Chongqing-Wanzhou High-speed Railway, has been completed.。

Wanzhou-Fankuai Section of Western Chongqing High-speed Railway

The construction of the Wanzhou-Fankuai section of the Western Chongqing High-speed Railway will begin in December 2022.，So far，The project has delivered a total of 529 mu of formal land.，Complete 54% of the total%；Deliver 1421 mu of temporary land，Completed 47% of the total%；House demolition completed 1.160,000 square meters。

March 23，Tiefengshan Tunnel Entrance Successfully Completed Pipe Shed Construction，Enter the excavation stage of the main tunnel。The total length of Tiefengshan Tunnel is 14.78 kilometers，It is the key control project of the whole line.，It is the longest tunnel within the scope of Sichuan and Chongqing in this project.。

Reconstruction Project of Chengdu-Chongqing Railway from Chongqing Station to Jiangjin Station

First quarter，Reconstruction Project of Chengdu-Chongqing Railway from Chongqing Station to Jiangjin StationⅠThe construction of the 30 km early construction section of the bid section has been accelerated in an all-round way.，Tunnel Monolithic Tunneling 145.5 meters，Bridge works completed 158.12 extension meters，22 million cubic meters of earth and stone works completed。Relocation of 4 high-grade pipelines completed，Pipeline completion acceptance and handover to the property right unit，Complete the preparation of 10 pipeline relocation construction drawings、Budget and Construction Group。

March 29，The first bridge of the project——Completion of pouring of the turnout bridge of the second line of the fourth substation in Huixikou；The new construction site is Dutouxi Bridge andK445+700、K448+Construction of 500 two roadbeds。

Chongqing East Railway Station Railway Integrated Transportation Hub

First quarter，Chongqing Railway Investment Group comprehensively promotes the construction of Chongqing East Railway Station building and supporting comprehensive transportation hub project，The main structure of the station building advances simultaneously at multiple elevations.，The overall progress of concrete pouring is more than half.，Among them, 270 meters of elevated floor has been completed 13%。

ProjectCTCThe main project starts construction at an elevation of 260 meters.，243 meters、249 meters、255 meters、The concrete pouring progress at the elevation of 260m is 90%、60%、34%、13%。Line 8 Section Tunnel Ming、The progress of the dark hole is 47%And 37%，Line 24 Section Tunnel Ming、The progress of the dark hole is 40%And 53%。

1 on the southwest floor of the comprehensive development house、Concrete pouring of the 2nd floor has been completed.，Access to the construction surface of Layer 3；The third floor of the underground main structure of the northwest building、Negative second floor、The concrete pouring progress of the negative first floor is 85%、79%、67%。

Source：Chongqing Railway Investment Group