Sand layer sludge overload pre-pressing device and method for soft soil foundation

Abstract

The invention discloses a sand layer sludge overload pre-pressing device for a soft soil foundation, and relates to the technical field of soft soil foundation solidification, the sand layer sludge overload pre-pressing device comprises a soft soil foundation body, two groups of drainage plates are laid on the outer wall of the top of the soft soil foundation body, a mounting cavity is defined by the two groups of drainage plates, a drainage pipe is clamped in the mounting cavity, water inlet holes are formed in the outer wall of one side of the drainage pipe and distributed in the circumferential outer wall of the drainage pipe at equal intervals, and the outer wall of the bottom of the drainage pipe makes contact with the outer wall of the top of the soft soil foundation body. The drainage pipe embedded under the non-woven fabric is connected with the exhaust pipe, and the vacuum pump is used for exhausting air, so that air in the membrane can be exhausted, air pressure difference is generated inside and outside the membrane, the air pressure difference is converted into load acting on a foundation, and a good solidification effect on a soft soil foundation body can be achieved.

Description

technical field [0001] The invention relates to the technical field of solidification of soft soil foundations, in particular to an overload preloading device and method for sand layer silt of soft soil foundations. Background technique [0002] The definition of soft soil foundation in my country's road industry standards refers to weak soil layers with low strength and high compression, most of which contain certain organic substances. Due to the low strength of soft soil and large amount of sinking, 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 roads. [0003] The Chinese invention patent with the publication number CN113322932A in the prior art discloses a method of vacuum preloading combined with a geomembrane bag device to load and strengthen the foundation, including: excavating a silt pond, filling the silt pond with silt and performing multiple vacuum preloading The geomembr...

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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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