Pump drainage type vacuum preloading soft foundation strengthening method
A vacuum and soft foundation technology, which is applied in infrastructure engineering, soil protection, construction, etc., can solve the problems of low vacuum degree and inability to improve the vacuum degree deep in the soft foundation, so as to reduce the impact, shorten the transmission path, reduce the The effect of transmission loss
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[0038] Utilize the extraction type vacuum preloading method step of the present invention to reinforce the soft ground as follows:
[0039] (1) Determine the depth, spacing and other layout parameters of the drainage board according to the soil properties and design requirements of the stratum;
[0040] (2) Level the site and lay the working cushion 7 (sand and gravel cushion or sand cushion) on the surface of the foundation to improve the bearing capacity of the foundation so that the construction equipment can enter the operation;
[0041] (3) Plug-in plate, drive the drainage plate 11 with air guide channel into the design depth, after the drainage plate is installed, a hole will be formed in the surface working cushion, this hole must be backfilled with sand in time, otherwise it will affect its drainage Effect: the exposed length above the working cushion on the surface of the drainage board is not less than 200mm, so as to be connected with the tube-sheet connector 10; ...
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