龙首渠
Longshou Canal / Tunnel Through Mountains
A tunnel aqueduct through mountains to convey water — one of the world's earliest hydraulic tunnels. Employed the shaft construction method, excavating simultaneously from both sides of the mountain.
龙首渠
Scientific Principle
Shaft-and-drift method: multiple working faces shorten construction time. Surveying: shaft positioning requires precision to ensure the tunnel axis does not deviate.