abstract
Yongshun-Jishou expressway (referred to as Yongji Expressway) is an important inter-provincial passage in the northwest of Hunan Province, and it is the seventh vertical important part of "seven verticals and nine horizontals" in the planning of expressway network in Hunan Province. The starting point is Luohai Hub, located in Luohai Village, Zejia Town, Yongshun County. At this starting point, there are three expressway at the intersection of Zhanghua Expressway, Yonglong Expressway and this project. This project starts from Yongshun and connects with Baomao expressway via furong town, Luoyixi, Guzhang and Jishou. It is an important inter-provincial passage from the northwest of Hunan Province to Hubei Province, a expressway that Hunan Province has been brought into the category of western development, a United bond to promote national development, and an important infrastructure to build a golden tourist corridor in western Hunan. The destination is Jishou West Interchange, which is located in the southeast of dawn village, Jishou City, and connects with Jicha Expressway.
Project overview
Yongji Expressway passes through the scenic spot, and the geological conditions are extremely complicated. At the time of feasibility study, the proportion of corridor bridges and tunnels was 60%, which was still as high as 43% after repeated optimization, including: 72 bridges /2 1.06km, 3 tunnels1/5.45km, which is a typical expressway in mountainous areas, with a relatively long design period; Land along the line is precious and cultivated land resources are in short supply; The project is arduous and there are many high piers; The main control points are Mengdong River, furong town Bridge and Luoyixi Extra-long Tunnel. Great interference to existing roads; Difficulties in construction organization and service road construction; Environmental protection and high landscape requirements.
(1) design standard: the total length of the main line is 84.492km, the technical standard is two-way four-lane expressway, the subgrade width is 24.5m, the running speed is 80km/h, and the total length of the connecting line between Luoyi West, Jishou North and Jishou West is19.438+0km. ..
(2) Service facilities: there are 1 monitoring and communication toll center (Jishou West), 3 maintenance work areas (furong town, Guzhang and Jishou West), 2 service areas (furong town and Jishou North), 1 parking area, 2 tunnel monitoring stations (Luoyi West and Jishou North) and 5 ramp toll stations (furong town and Jishou North).
(III) Project Investment: The estimated total amount of this project is 9.447 billion yuan, and the total construction period is 48 months.
Chronicle of events
20 10,10/0 On the morning of October 28th, the groundbreaking ceremony for Longshan to Yongshun expressway and Yongshun to Jishou expressway was held in Longshan County, which will not only end the history that there is no expressway in the county, but also add an exit channel for the western regions of Hunan and Hubei provinces, which is of great strategic significance for improving the imbalance of regional economic development and speeding up the western development.
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