Intermittent vacuum precompression device and soft foundation treatment method of intermittent vacuum precompression device
A technology of vacuum preloading method and soft foundation treatment, applied in vacuum preloading device and its soft foundation treatment, ultra-soft soil drainage and other similar engineering fields, can solve the problem of affecting the yard filling process and the effect is not obvious, etc. problems, to avoid rapid aggregation, reduce migration speed, and delay clogging time.
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Embodiment 1
[0031] Such as figure 1 As shown, an intermittent vacuum preloading device, which includes a vertical drain body (1), a straight connector (2) connected to the vertical drain body (1), and a connecting pipe connected to the straight connector (2) (3), the drainage branch pipe (4) connected to the connecting pipe (3), the drainage main pipe (5) connected to the drainage branch pipe (4), the jet pump (6) connected to the drainage main pipe (5), the drainage A valve (7) is installed between the main pipe (5) and the jet pump (6).
[0032] For the intermittent vacuum preloading device described above, 300g / m 2 geotextile (8) and double-layer sealing membrane (9).
[0033] The above-mentioned intermittent vacuum preloading device is characterized in that: the valve (7) is a waterproof high-frequency electric valve or a pneumatic valve. The valve control frequency is 5 seconds to 60 seconds, and the change form is the sinusoidal change or pulse change of the vacuum de...
Embodiment 2
[0037]The intermittent vacuum preloading method provided by the invention carries out the method for soft ground treatment, and it comprises the following steps:
[0038] a. Drainage channel connection: According to the design requirements, bury the vertical drainage body (1), then connect the straight joint (2) with the vertical drainage body (1), and then connect the connecting pipe (3) with the straight joint (2) ), and connect the drainage branch pipe (4) to the connecting pipe (3), then connect the drainage main pipe (5) to the drainage branch pipe (4), and then connect the jet pump (6) to one end of the drainage main pipe (5), And install a valve (7) on the pipeline between the drain main (5) and the jet pump (6);
[0039] b. Vacuum preloading and sealing treatment: Lay 300g / m on the horizontal pipes of the drainage branch pipe (4) and the drainage main pipe (5) in sequence 2 The geotextile (8) and the double-layer sealing film (9) are pressed into the adjacent ...
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