Model test device and model test for injecting flocculating agent during dredger fill construction

Abstract

The invention discloses a model test device for injecting a flocculating agent during dredger fill construction. A flocculating agent conveying pump is arranged in an agent distribution bin of the model test device and communicated with an intense stirring bin through a first conveying pipe, and a first flow control valve is arranged on the first conveying pipe. A slurry conveying pump is arranged in a dredger fill sample loading bin and communicated with the intense stirring bin through a second conveying pipe, and a second flow control valve is arranged on the second conveying pipe. An electric stirrer is arranged in the intense stirring bin, the intense stirring bin is communicated with a dredger fill sample collecting bin through a third conveying pipe, and a third flow control valve is arranged on the third conveying pipe. The invention further discloses a model test for injecting the flocculating agent during dredger fill construction. The model test device for injecting the flocculating agent during dredger fill construction is simple in structure and practical and can simulate a test model for injecting the flocculating agent during dredger fill construction completely and accurately.

Description

technical field [0001] The invention relates to a model test device for injecting flocculant in the construction process of dredging filling soil, which is used for indoor simulation of the blown filling soft soil foundation after the reaction between the flocculant and the vacuum preloading treatment. The invention also relates to the model test of injecting the flocculant during the construction of the dredging and filling soil by using a model test device for injecting the flocculant during the construction of the dredging and filling the soil. Background technique [0002] With the continuous expansion of construction scale in my country's coastal areas, the supply of land resources has become increasingly tense, and tidal flat reclamation has become the main way to obtain land resources. The reclamation of tidal flats often adopts the method of dredging land reclamation, but the dredged fill silt has high moisture content, high fluidity, and extremely low bearing capaci...

AI Technical Summary

Problems solved by technology

There are two main problems in the vacuum preloading method currently used: one is that during the vacuuming process, the vertical drainage plate is seriously clogged, and the vacuum degree is greatly lost in the soil; The coefficient gradually decreases, and the drainage in the later stage is quite difficult

However, in actual engineering, the diameter of the dredger filling soil delivery pipeline is often large and the flow rate of the mud in the pipeline is relatively fast. It is difficult for the flocculant slurry injected through the grouting port to mix evenly with the mud in the pipeline, which may easily cause incomplete flocculation reaction. As a result, the vacuum preloading in the later stage cannot produce obvious treatment effects, and the advantages of flocculation combined with vacuum preloading cannot be exerted.

In addition, the application of the above method is limited to large-area dredger fill construction sites, and the cost of experimental research is high, and it is time-consuming and laborious. How to simulate the process flow of this method in the indoor laboratory, conduct indoor model tests, and further study and improve the flocculation combined with vacuum The theory and technical support related to preloading, such a model test device that injects flocculant at the same time during the construction of dredger fill has not yet appeared.

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