Recently, the bidding results for the survey and design project of the Guizhou section of the Dacun Zunyi Railway were officially announced. The consortium formed by China Railway Engineering Design Consulting Group Co., Ltd. and China Railway Sixth Survey and Design Institute Group Co., Ltd. successfully won the bid, marking the official start of the preliminary survey and design work for this important railway project spanning Sichuan and Guizhou provinces. This has laid a solid foundation for the smooth and orderly progress of the project in the future.

Determination of the route direction of the new channel of the Sichuan Guizhou Railway

It is reported that the Dacun Zunyi Railway is a key transportation infrastructure project connecting Zunyi City in Guizhou Province and Luzhou City in Sichuan Province. The line runs through the core areas of Sichuan and Guizhou provinces, starting from Gelaoba South Station on the Wengma North Extension Line in Zunyi area in the south, passing through Bozhou District and Renhuai City in Zunyi City in the northwest direction, crossing the Chishui River and entering Sichuan Province, passing through Maoxi Town in Gulin County, and finally connecting to Dacun Station on the Xuda Railway. The total length of the project is about 140 kilometers, including about 107 kilometers in Guizhou and about 33 kilometers in Sichuan; The total investment of the project is about 19.1 billion yuan, with an investment of about 14.3 billion yuan in the Guizhou section and about 4.8 billion yuan in the Sichuan section. After completion, the project will become an important link for interconnection between Sichuan and Guizhou.

Comprehensive and clear technical standards for the project

According to the feasibility study report of the project, the main technical standards of the railway have been clarified: the railway level is Grade II, the number of main lines is single track, and the designed running speed is 120 kilometers per hour; The minimum curve radius is 1200 meters for general road sections and 800 meters for difficult road sections; The slope restriction is divided into two sections, with 13 ‰ for the section from Gelaoba South to Maotai and 20 ‰ for the section from Maotai to Dacun; The traction type is electric traction, and the locomotive type is HXD type; In terms of traction quality, the section from Gelaoba South to Maotai weighs 4000 tons, while the section from Maotai to Dacun weighs 3000 tons up and 2700 tons down; The effective length of the arrival and departure lines is set according to the differences in road sections, which are 850 meters, 880 meters and 650 meters for dual machine situations, 680 meters for dual machine situations, 850 meters for some road sections, and 880 meters for dual machine situations; In terms of block types, the section from Gelaoba South to Maotai adopts automatic inter station block, while the section from Maotai to Dacun adopts semi-automatic block to ensure safe and efficient train operation.

Announcement of bidding content and winning results for survey and design

The scope of this bidding is the survey and design work of the Guizhou section of the Dacun Zunyi Railway, with a total investment of 14 billion yuan. The estimated contract price for this section is 262 million yuan, and the survey service period is a total of 2000 days. The specific bidding content is clear, and it is necessary to strictly follow the current standards of the railway industry, as well as the project approval requirements of relevant national and Guizhou provincial authorities, to fully complete all survey and design work in the preliminary design and construction drawing design stages of the project, including engineering geological survey, location survey, supplementary location survey, hidden karst detection, preliminary design and construction drawing design document preparation, including the design of large temporary projects, relocation of power lines of 10 kV and above, relocation of oil and gas pipelines and water supply and drainage pipelines with a diameter of 100 mm and above, and other related designs. At the same time, it is responsible for the preparation of sub standard budget estimates, on-site design cooperation, design changes, budget cleaning and other work, and cooperates with the construction unit to carry out project related approval and review, prerequisite processing, information construction, scientific research projects and other matters.

After a standardized bidding process, the consortium formed by China Railway Engineering Design Consulting Group Co., Ltd. and China Railway Sixth Survey and Design Institute Group Co., Ltd. was finally determined as the winning bidder for the project, with a bid price of 254.14 million yuan. The two winning bidders are both backbone enterprises in the field of railway survey and design in China, with rich industry practical experience, strong technical strength, and a complete service system. They are able to efficiently and high-quality complete the various tasks of this survey and design, ensuring the orderly progress of the preliminary work of the project. Keywords: Dacun Zunyi Railway, Railway Construction, Transportation Hub

The construction of the Dacun Zunyi Railway is of great significance for further improving the railway network layout in the Sichuan Guizhou region, strengthening economic and cultural exchanges between Zunyi and Luzhou, and opening up regional logistics transportation channels. At the same time, it can effectively assist in the development of resources and industrial upgrading along the line, provide strong support for the coordinated development of adjacent areas in Sichuan and Guizhou, consolidate the achievements of poverty alleviation, and promote rural revitalization. The successful bidding of this survey and design project has laid a solid foundation for the subsequent promotion of the project. In the next step, the winning consortium will strictly follow the bidding requirements and industry standards, carry out various survey and design work in an orderly manner, and make every effort to promote the early landing, construction, and opening of the project, and give full play to the comprehensive benefits of the project.Editor/Gong Ziwei