Refrigeration structure of power transmission tower foundation in permafrost region
A technology for permafrost areas and tower bases, applied in infrastructure engineering, soil protection, protection devices, etc., can solve the problems of particle size, thickness and material type restrictions, to ensure long-term thermal stability, good promotion prospects, structure simple effect
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[0018] Below in conjunction with accompanying drawing, the technical scheme of the patent of the present invention is further described by following embodiment:
[0019] In this embodiment, the porous medium 3 is slag. The internal porosity of the slag is relatively large, with a porosity of 0.35. Air is diffused in it, and the voids are connected to each other. Natural convection and forced convection occur in the slag layer in the cool season, which makes the lower soil temperature lower; in the warm season, the slag layer has a low effective thermal conductivity and plays the role of heat conduction and heat insulation.
[0020] Such as figure 1 As shown, a refrigeration structure of a power transmission tower base in a permafrost region includes a natural surface 1, a tower base 2, a porous medium layer 3 and a geotextile 4. Tower base 2 is a perfusion cone-column foundation. In excavating the foundation pit of the transmission tower on the natural surface 1, a porous ...
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