Haivan Pass Tunnel
CONSTRUCTION
PROJECT
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Progress Report > Package IA - North Tunnel Section
Drilling Holes Water Flowing on the Cutting Face at Evacuation Tunnel at Station 4+120.1 (measured: 35L/sec)
Nước thoát ra từ lỗ khoan bề mặt hầm cứu hộ
Tháng 05/2003 - Trở về
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