Civil airport enclosure groove and construction method thereof

In order to overcome the defects that an existing enclosure is low in height and easy to climb and external water flow easily intrudes into a flying area in the enclosure, the invention provides the civil airport enclosure groove capable of indirectly heightening the enclosure, increasing the climbing difficulty and preventing the water flow from intruding into the flying area on the inner side of the enclosure and the construction method thereof. The groove is arranged around the outer side of the enclosure, the groove is a groove dug downwards from the ground, the height from the lowest point of the groove to the ground is not less than 2.5 m, and the width of the groove is not less than 2.5 m. The groove is dug around the enclosure on the ground on the outer side of the enclosure, the width of the groove is large, external personnel are difficult to cross, the height of the enclosure is indirectly increased through the deep groove, and the difficulty of climbing the enclosure is increased. Secondly, the gr