Requirements for airport topographic mapping

Requirements for airport topographic mapping:

1. Runway measurement: Set the selected main flight runway on site, determine the runway length according to the airport grade, bury permanent signs at both ends, and establish a main grid parallel to the runway axis, 400 meters long, vertical and cross section on site.

2. Measure and map the clearance area, determine the plane position of all obstacles in the clearance area by forward intersection method or electromagnetic wave range finder, measure the height of obstacles by trigonometric leveling method, plot them on the topographic map with the scale of 1: 5000, and draw the clearance profile.

3. The survey contents in the construction stage include the construction lofting and completion survey of earthwork, concrete works, special roads, water pipelines, power transmission lines, water collection pipelines and buildings.

4. Measuring runways and taxiways poured on concrete pavement are generally poured in rectangular or hexagonal plates. The survey work includes foundation lofting, concrete block formwork lofting, track installation of grader, joint lofting and concrete pouring inspection.

5. After the completion of the construction, collect the completion survey data of the runway, underground pipe network, oil depot, office building and other ancillary buildings (command post, aviation dispatching, receiving station, launch pad, weather station, long-distance lidar navigation station, ultrashort wave directional station, short-range navigation station, radar station, blind descending antenna, hangar, etc.) of the airport. ).