Haivan Pass Tunnel
CONSTRUCTION PROJECT

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As of November 2002 - Home | Next

Unforeseen rock deformation at right side walls Main tunnel Sta 3+483.75 to 3+500.25, additional IBO rockbolts, wiremesh & shotcrete t=5cm

Biến dạng đá trên tường bên phải, bổ sung neo thép IBO, khuôn thép và bê tông phun dày 5cm 

Tháng 11/2002 - Trở về


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