Filter cake freezing device of slurry shield test system
A test system and freezing device technology, which is applied in the field of mud film freezing devices, can solve problems such as difficult detection, and achieve the effects of keeping the shape intact, convenient for later observation, and short freezing time
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[0017] figure 1 Show, a kind of specific embodiment of the present invention is, a kind of mud film freezing device of mud-water shield test system, its composition is:
[0018] A mud film freezing device for a mud-water shield test system is characterized in that: a freezing pipe 2 is distributed in a model box 1 for simulating a tunnel structure; the inlet end of the freezing pipe 2 is connected with a liquid nitrogen tank 4 through a connecting pipe 3, and the outlet end Stretch out of the model box 1; the inlet and outlet ends of the freezing pipe 2 are connected to the model box 1 in a sealed connection; the top wall of the model box 1 is sealed with a pressurized pipe 7; one side of the model box 1 is provided with The shield machine cover opening 8; the model box 1 is filled with soil, a layer of foam 5 is placed between the soil and the wall of the model box 1, and a temperature sensor 6 is embedded in the soil.
[0019] The distribution of the freezing pipe 2 in this...
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