A spraying equipment for sand boards in the construction of strong discharge type controllable sand board composite structure

Abstract

The invention discloses a forced drainage type controllable sand plate composite structure which comprises a plastic drainage plate. At least three sand plates are evenly distributed around the plastic drainage plate in the radial direction with the plastic drainage plate as the center. A vacuum pre-pressing pump drainage mechanism or a preloading pump drainage mechanism is arranged at the upper end of the plastic drainage plate. The plastic drainage plate is connected with a drainage pipe of the vacuum pre-pressing pump drainage mechanism or the preloading pump drainage mechanism. The invention further provides injection equipment of a construction sand plate and a soft foundation treatment method adopting the forced drainage type controllable sand plate composite structure. In the forced drainage type controllable sand plate composite structure, the multiple radially-distributed sand plates radiate a pumping drainage area towards the periphery, the contact area of the vertical faces of the sand plates and a soil body can be increased to a larger degree, and therefore water, within a wider range, in the soil body is conveyed into the plastic drainage plate in the center through the sand plates; and the pump drainage efficiency is enhanced, and the plastic drainage plate use level on unit area is reduced.

Description

technical field [0001] The invention relates to a composite structure of strong discharge type controllable sand board. The present invention also relates to the spraying equipment for constructing the sand board in the above-mentioned forced discharge type controllable sand board composite structure. The present invention also relates to a soft foundation treatment method using the above-mentioned forced-discharge controllable sand plate composite structure. Background technique [0002] Traditional high water content soils, such as dredger fill soil drainage consolidation method pumping, a large number of vacuum preloading method or surcharge preloading method combined with plastic drainage boards, sand wells and other pumping channels driven into the soil to achieve Pumping, but plastic drainage boards or sand wells can only extract water from the soil in the surrounding limited area, so it is necessary to increase the number of drainage boards or sand wells, even if the...

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Problems solved by technology

[0002] Traditional high water content soils, such as dredger fill soil drainage consolidation method pumping, a large number of vacuum preloading method or surcharge preloading method combined with plastic drainage boards, sand wells and other pumping channels driven into the soil to achieve Pumping, but plastic drainage boards or sand wells can only extract water from the soil in the surrounding limited area, so it is necessary to increase the number of drainage boards or sand wells, even if the number is increased, the drainage efficiency is not high

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