The invention provides a construction method of an air
curtain wall. The construction method specifically comprises the following steps that 1, a plurality of air injection hole units are arranged onthe periphery of the side of a mine pit; 2, an air injection sleeve and an air injection
pipe are connected in a welded mode, a
pipe opening of the air injection sleeve is sealed, and a connector connected with an air conveying
pipe is arranged on the air injection sleeve; 3, the air injection hole units are subjected to hole washing with clear water, and well wall mud is washed away; and 4, the air injection pipe is connected with the air conveying pipe, the air conveying pipe is connected with an
air compressor, and the rest can be done in the same manner, so that the plurality of air injection hole units in rows are connected according to the steps to form the air
curtain wall. The air
curtain wall is used for preventing and treating mine pit underground water, the underground
water level around the mine pit cannot be decreased, the underground
water level around the mine pit can be increased instead, and the surrounding
ecological environment can be protected; and meanwhile, a large amount of underground water can be prevented from flowing into the mine pit, the effect of preventing and treating the mine pit underground water is achieved, the cost is low, construction is easy,and the construction method can be popularized within a
large range.