Vacuum prepressing method of sand-free cushion layer of secondary circulation line system
A pipeline system and secondary cycle technology, applied in soil protection, construction, infrastructure engineering, etc., can solve the problems of long construction period, heavy repetitive workload, high cost, etc., to reduce project cost, protect pipeline system, The effect of reducing pressure
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[0035] The present invention relates to a method for vacuum pre-pressing treatment of a sand-free cushion layer capable of secondary recycling of super soft soil foundation pipelines. The method includes the following technological processes (see figure 1 with figure 2 ):
[0036] Step 1. Shallow vacuum rapid consolidation:
[0037] a) Spread plastic woven cloth or geotextile in the area to be treated, apply vertical plastic drainage short board, and arrange horizontal plastic drainage short board (about 0.5m). The length of the vertical plastic drainage short board is 1-5m, the length of the vertical plastic drainage board connected with the horizontal plastic drainage short board is 1m, the length of other vertical plastic drainage short boards is 3-5m, and the vertical plastic drainage is short The spacing between the plates is 0.6-0.9m, arranged in a plum blossom shape.
[0038] b) Laying the main drainage pipe and branch drainage pipe. The drainage main pipe and the branch o...
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