Abstract:

Based on a median strip irrigation project at the Zaozhuang section of National Highway No.3, the application problem of irrigation technology in highway median strip irrigation was experimentally studied. Dripping performance of micro-porous pipe laboratory test and the physical model test of soil water movement under the irrigation condition were put forth. The dripping law of the pipe and the movement of soil water were studied in these experiments. And then, the irrigation design parameters were given. In consideration of the flow rate, the stability and the limited time, the proper water stress was 6m and the proper length of the rubber pipe was 50m for the 2.5L／h pipes, the proper water stress  was 5m  and the proper length of the rubber pipe was 35m for the 6.0L／h ones. The proper depth of dripping pipes was 45cm, and the proper layout spacing was 1m.

Key words: highway, environment engineering, drip irrigation, median strip