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Abstract

In the high-intensity dangerous mountainous areas of western China, the terrain is complex, and geological disasters are developing. Highway routes need to avoid major geological disasters and choose favorable terrain layout. Meanwhile, highway construction also faces difficulties in the approach of construction and emergency rescue during operation. In the design of the route scheme for Tongtou Gorge section of Leying–Baoxing Expressway in Sichuan Province, two Yonglin combined cableway bridges across the canyon were cleverly set up, making the laying of the route on the opposite bank of the existing road possible. It transformed one ultra-long tunnel into three long tunnels. Meanwhile, problems such as ventilation and emergency rescue during the construction approach and operation period were solved, and comprehensive disaster resistance was improved. It saved project investment and could provide a reference for similar projects in mountainous areas.

Publication Date

11-24-2023

DOI

10.14048/j.issn.1671-2579.2023.05.046

First Page

273

Last Page

276

Submission Date

March 2025

Reference

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