Rapid treatment system and rapid treatment method for soft soil foundation

Abstract

A rapid treatment system for a soft soil foundation comprises a plurality of drainage plates vertically inserted into a soft soil stratum; the drainage plates are connected with a drainage pipe through hand-shaped joints; the drainage pipe is connected into a gas-liquid dispersion tank; a self-controlled drainage pump is arranged in the tank; above the tank, a vacuum-pumping pipeline system is connected with a high-vacuum pump; pressurization pipes are arranged in the soft soil stratum between the drainage plates; and the pressurization pipes are connected with a booster pump. According to the technology and a method adopted by the invention, adverse effects of well resistance and a smearing effect on drainage consolidation can be obviously reduced, blocking of a drainage channel is reduced, a dead zone of a traditional vacuum preloading drainage channel can be eliminated, dependence on sand resources in the traditional technology can be eliminated, vacuum-pumping time is shortened and vacuum-pumping units are reduced, and 100 percent of operation rate is realized; moreover, the drain pipe is recovered, so that power consumption is reduced, engineering cost is reduced, and the construction period is shortened.

Description

technical field [0001] The invention relates to the technical field of foundation engineering, in particular to the engineering field of deep soft foundation or foundation treatment of dredged silt. Background technique [0002] For soft soil foundation, when adopting methods such as vacuum preloading or surcharge preloading for treatment and reinforcement, generally vertical sand wells or plastic drainage boards are drilled in the soft soil foundation as drainage channels, and the self-weight load of the piled material or vacuum Drainage consolidation occurs under load preloading, pore water pressure slowly dissipates, effective stress increases slowly, foundation strength gradually increases, and most of the foundation consolidation settlement is eliminated during the construction period, thereby improving the bearing capacity of the soft soil foundation. get improved. However, due to the low drainage efficiency and small preload of the above-mentioned technologies and me...

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Problems solved by technology

However, due to the low drainage efficiency and small preload of the above-mentioned technologies and methods, a large number of pumping and drainage equipment and thicker medium-coarse sand cushions are used, resulting in low treatment efficiency for soft soil foundations, long construction periods, and high costs. After the load capacity is not high

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