The invention discloses a construction process of an airport
runway anti-
frost heaving
composite structure cooperatively regulated and controlled by water, heat and steam, and relates to the technical field of airport runways in alpine regions. Comprising the following steps that S1, an original foundation
silt layer is laid, specifically, a deep foundation pit is excavated at the site of a
runway, then a foundation layer at the bottom of the foundation pit is laid, in the laying process, the filler
humidity can be controlled in an airing and watering mode, and when the foundation layer at the bottom of the foundation pit is laid, a soil-rock mixture is laid on the lower layer firstly; the method comprises the following steps: S1, paving a water-proof
geotextile with two pieces of cloth and one piece of film, then performing rough leveling by using a bulldozer or a land
leveler, paving soil after rough leveling is completed, and performing
grinding and fine leveling after the soil is paved, S2, paving the two pieces of cloth and one piece of film water-proof
geotextile; through the efficient anti-seepage performance (the
water seepage rate is lower than 0.01 cm / s) of the two-cloth and one-film waterproof
geotextile and the arrangement of the heat preservation plate,
water vapor and
liquid water are effectively prevented from moving upwards, the freezing depth is reduced by 50% or above, and therefore
frost heaving deformation in winter is remarkably reduced.