Apparatus for reinforcing hydraulically filled soft soil by means of horizontal vacuum preloading and electroosmosis combined mode and method

Abstract

The invention belongs to the technical field of geotechnical engineering and hydraulic engineering research, and discloses an apparatus for reinforcing hydraulically filled soft soil by means of a horizontal vacuum preloading and electroosmosis combined mode and a method. The apparatus comprises horizontal drainage boards, a drainage pipe, drainage branch pipes, an electroosmotic power source, a valve, a water vapor separator, a vacuum pressure gauge, a vacuum pump and a drainage pump; the horizontal drainage boards are laid into different layers along a vertical direction; by means of the electroosmosis solidification of the electroosmotic power source, and the vacuum load of the vacuum pump, the vacuum field, the electroosmotic field and the gravity field of a site can be consistent, sothat energy offset between the vacuum field, the electroosmotic field and the gravity field can be avoided, and therefore, solidification efficiency can be improved, and energy consumption can be reduced. The method is based on the above apparatus. With the method adopted, a hydraulic fill process and a drainage solidification process can be simultaneously performed, and therefore, the bending ofthe vertical drainage boards and the disturbance of insertion boards can be avoided, which are characteristics unavailable for an existing hydraulically filled soft soil drainage and solidification mode, construction time can be significantly shortened, and a reinforcing effect for deep soft soil can be improved.

Description

technical field [0001] The invention belongs to the related technical fields of geotechnical engineering and water conservancy engineering research, and in particular relates to a device and a method for horizontal vacuum preloading combined with electroosmosis reinforcement of blown-fill soft soil with high moisture content. Background technique [0002] With the development of national engineering construction, sea reclamation projects, river and lake water treatment projects, and tailings and sludge treatment projects are increasing, involving dredging, reclamation and reinforcement of soft soil (silt). The saturated soft soil involved in this type of project has the characteristics of high water content, high fine particle content, large void ratio, high compressibility, and low permeability. How to quickly realize the drainage reinforcement of such saturated soft soil is of great significance to the scientific planning, design and construction of subsequent sites and la...

AI Technical Summary

Problems solved by technology

[0005] (1) During the drainage and consolidation process of the soil, the drainage plate is often bent, the vacuum transmission efficiency is low, and the deep soft soil treatment cannot meet expectations;

[0006] (2) During the process of electroosmosis, cracks appear in the soil, resulting in an increase in resistance, a decrease in electroosmosis efficiency, and an increase in power consumption;

[0007] (3) The energy of the vacuum pressure field and the electric field cancels out, resulting in low drainage efficiency and increased energy consumption, etc.

There is no effective method or measure to solve the above problems

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