Prevention method for disasters caused by "pot effect" of airport runway

A technology of roads and tunnels, which is applied in the field of prevention and control of disasters caused by road foundations and "pot cover effects", can solve problems such as inapplicability, and achieve the effect of preventing road foundations from muddying

Active Publication Date: 2015-11-18
BEIHANG UNIV
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Problems solved by technology

[0010] However, the above-mentioned control methods can only solve the disasters caused by the increase of water content at the bottom of the pavement caused by capillary water transport, and are not suitable for disasters caused by the increase of water content caused by condensation
Therefore, the above method is not suitable for the prevention and control of disasters caused by the "pot lid effect" in arid and semi-arid areas with low groundwater levels.

Method used

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  • Prevention method for disasters caused by "pot effect" of airport runway
  • Prevention method for disasters caused by "pot effect" of airport runway
  • Prevention method for disasters caused by "pot effect" of airport runway

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Embodiment Construction

[0017] Embodiments of the present invention will be described below with reference to the drawings. Elements and features described in one drawing or one embodiment of the present invention may be combined with elements and features shown in one or more other drawings or embodiments. It should be noted that representation and description of components and processes that are not related to the present invention and known to those of ordinary skill in the art are omitted from the drawings and descriptions for the purpose of clarity.

[0018] see figure 1 As shown, it is a schematic flow chart of the method for preventing and treating the "pan lid effect" according to an embodiment of the present application.

[0019] Specifically, in step 110, a vertical tunnel is excavated from the ground surface. The depth of the vertical tunnel can be relatively deep, for example, it can be significantly greater than the first depth corresponding to the dew point temperature.

[0020] Next...

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Abstract

The invention relates to a prevention method for disasters caused by the "pot effect" of an airport runway. The method comprises the step of paving a drainage gas insulation layer on the position, below the depth corresponding to the dew-point temperature, of a road foundation. The purpose of gas insulation is to guarantee that condensate water near the road foundation only comes from a soil body above the dew-point line, to reduce the condensate water amount to keep the moisture content of the upper soil body basically constant, and the purpose of drainage is to drain water possibly existing on the upper soil body in time. By adopting the scheme, engineering disasters of frost boiling of the road foundation and the like caused by the "pot effect" can be effectively prevented.

Description

technical field [0001] The present application relates to the technical field of civil engineering, in particular to a road foundation and a method for preventing and controlling disasters caused by the "pan lid effect". Background technique [0002] As one of the engineering disasters prone to occur on airport runways in arid and semi-arid cold regions, the "pot lid effect" has attracted widespread attention in the engineering field. "Pot cover effect" refers to the phenomenon that the water content of the shallow layer of the road foundation increases and the strength decreases due to the airtightness of the road surface, which prevents the water from the upper part of the road foundation from being discharged. In arid areas, the groundwater level is low, and the capillary action of groundwater has a limited range of upward water transfer, so it is almost impossible to directly supplement the soil moisture in the upper part of the road foundation. The moisture in the shall...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C3/04E02D3/10
Inventor 姚仰平王琳王乃东贾峻峰
Owner BEIHANG UNIV
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