Sand layer silt overload preloading device and method for soft soil foundation

Abstract

The invention discloses a sand layer silt overload preloading device for a soft soil foundation, relates to the technical field of soft soil foundation solidification, and comprises a soft soil basic body, a drainage board is laid on the top outer wall of the soft soil basic body, and the drainage board The number is two groups, and the two groups of drainage boards are surrounded by an installation cavity, and a drain pipe is clipped inside the installation cavity, and a water inlet hole is opened on one side of the outer wall of the drain pipe, and the water inlet hole is in the The peripheral outer walls of the drainage pipes are equidistantly distributed, and the bottom outer walls of the drainage pipes are in contact with the top outer walls of the soft soil basic body. In the present invention, the drainage pipe buried under the non-woven fabric is connected with the air suction pipe, and the air is pumped by a vacuum pump, so that the air in the membrane can be discharged, thereby causing a pressure difference between the inside and outside of the membrane, and the air pressure difference is transformed into a force acting on the foundation. load, so that it can have a good curing effect on the soft soil basic body.

Description

technical field [0001] The invention relates to the technical field of soft soil foundation solidification, in particular to a sand layer silt overload preloading device for soft soil foundation and a method thereof. Background technique [0002] The definition of soft soil foundation in my country's highway industry standard refers to the soft soil layer with low strength and high compression, most of which contain certain organic substances. Due to the low strength of soft soil and the large amount of subsidence, it often brings great harm to road engineering. If it is not handled properly, it will have a great impact on the construction and use of highways. [0003] In the prior art, the Chinese invention patent with the publication number of CN113322932A discloses a method for stacking and reinforcing the foundation with a vacuum pre-pressing combined geomembrane bag device. Pressing and pumping, laying the geomembrane bag device above the soft mud layer treated by vacu...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a sand layer silt overload preloading device and method for soft soil foundation, so as to solve the problem that the accurate area of ​​the pipeline air leakage cannot be detected in time in the prior art, and provide the staff with a lot of trouble in the follow-up leak detection work. It brings great inconvenience, increases the staff's leak checking time, and has technical problems with high potential safety hazards

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