Measure for enhancing electric transmission line tower footing frozen soil foundation stability
A technology for foundation stability and power transmission lines, applied in infrastructure engineering, protection devices, buildings, etc., can solve the problems of difficult compaction of backfill, influence of frozen soil stability, frost heave, etc., to reduce construction difficulty and adverse phenomena. and the effect of reducing engineering investment
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[0036] Example 1 Measures to enhance the stability of the permafrost foundation of transmission line tower foundations, the measures refer to:
[0037] (1) In the site where the foundation construction of the transmission line has been completed, drill and insert one gravity heat pipe 2 at the corner position of the foundation pit of each square tower foundation 1 of the transmission line, insert four gravity heat pipes 2 into each foundation pit, and insert 4 gravity heat pipes 2 into each foundation pit. 16 gravity heat pipes 2 are embedded in the tower foundation 1 .
[0038] (2) Dig a pit to a depth of 0.5m within a range of 3m × 3m around each tower leg, and then lay a 10cm-thick XPS insulation material 3 horizontally on the bottom of the flat pit close to the foundation 1 of the tower.
[0039] (3) Foaming the thermal insulation material 3 on the pile end of the tower foundation 1 above the XPS thermal insulation material 3 on site, so that the thermal insulation mater...
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