tailieunhanh - INTRODUCTION OF HAI VAN PASS TUNNEL CONSTRUCTION PROJECT IN VIETNAM

Xây dựng đường hầm đèo Hải Vân, một đường hầm đường cao tốc dài , đang được thực hiện để cải thiện chính đường hành lang Bắc-Nam tại miền Trung Việt Nam, đặt tên là quốc lộ số 1. Hải Vân hiện có khoảng Dài 20km, với sự thay đổi độ cao 475m, đường cao tốc tiêu chuẩn thấp với nhiều uốn cong chặt chẽ và một gradient dốc. Đường hầm dự án là ứng dụng đầu tiên của phương pháp mới Tunneling Áo (NATM), hệ thống thông gió theo chiều dọc với Lắng tĩnh điện (EP), kiểm soát kiểm soát và thu nhận. | www. INTRODUCTION OF HAI VAN PASS TUNNEL CONSTRUCTION PROJECT IN VIETNAM - Longest Highway Tunnel in South-East Asia - Ichizuru ISHIMOTO 1 and Tran Ngoc NGUYEN 2 1 Nippon Koei Co. Ltd. Tokyo Japan 2 Project Management Unit Ministry of Transport Vinh Vietnam Abstract The Hai Van Pass Tunnel construction a long highway tunnel is being implemented to improve the main north-south road corridor in Central Vietnam named National Highway . The existing Hai Van Pass is approximately 20km long with 475m elevation change of low standard highway with numerous tight bends and a steep gradient. The tunnel project is the first application of the New Austrian Tunneling Method NATM longitudinal ventilation system with the Electrostatic Precipitator EP Supervisory Control And Data Acquisition SCAD A for a highway tunnel in Vietnam. The construction started 1st October 2000 the tunnel breakthrough was celebrated on 7th November 2003 and the traffic opening will be early 2005. This paper introduces the general view of the project as a record of turning point project of civil engineering field in Vietnam. Key words Highway Tunnel NATM Longitudinal Ventilation System Vietnam 1 BACKGROUND The Hai Van Pass located in coastal Central Vietnam is the biggest traffic bottleneck on the National Highway which is the most important North-south longitudinal arterial linking the capital Hanoi with Ho Chi Minh. The Pass rises to an elevation of 475 m for approximately 20 km with continuous small curves and steep grade. From the late 1990 s the rapid development of national economy has increased the logistic volume through the Pass however the Fig. 1 Project Layout heavy tracks have been forced to run slowly and fatal traffic accidents increased year by year. In addition the road is often blocked due to the landslide and slope failure during the rainy seasons. Under such circumstances the .