Drawer type rain garden typical greening box and using method thereof

Abstract

The invention relates to the field of hydraulic tests, in particular to a drawer type rain garden typical greening box. The drawer type rain garden typical greening box comprises a top-layer box body,middle-layer box bodies and a bottom-layer box body. The drawer type rain garden typical greening box can be applied to research in the directions of the thickness and the filler gradation ratio of arain garden by changing the number of the middle-layer box bodies and filler in the middle-layer box bodies and has the advantages of being high in reliability, simple in structure, good in integrityand simple and convenient in test process.

Description

technical field [0001] The invention relates to the field of hydraulic tests, in particular to a typical greening box of a drawer-type rain garden and a use method thereof. Background technique [0002] In September 2016, the General Office of the People's Government of Zhejiang Province issued the "Implementation Opinions on Promoting the Construction of Sponge City in the Province", pointing out that the goal of building "two beauties" Zhejiang and the guidance of "five major development concepts" should effectively change urban planning , construction concept, vigorously promote the construction of sponge city. At present, the main way to build sponge cities across the country is mostly low-impact development. The rain garden infrastructure in the LID facility has the functions of infiltration, absorption and purification of rainwater. It is also called "biological retention pond", which belongs to a method of stormwater runoff regulation and rainwater pollution control ...

AI Technical Summary

Problems solved by technology

[0005] (1) In terms of test repeatability and cost: in outdoor field tests, if it is necessary to obtain test results under typical hydrometeorological conditions, it cannot be controlled artificially, and it is difficult to repeat the test, which increases the test period and human financial investment; Usually a fixed-size box is used, and the filling needs to be laid layer by layer. When changing the group, it is necessary to increase the box or re-lay the packing, which is the same as the outdoor field test, which greatly increases the test cycle and the investment of human and financial resources;

[0006] (2) In terms of test instruments: outdoor field tests are affected by hydrology, meteorology, soil and other aspects, so the selection of instruments is limited, and the sampling needs to be brought back to the laboratory, which will inevitably affect the accuracy of the test results; Higher-level measuring instruments can be used in the test, but due to the influence of the thickness of the soil layer, it is difficult to measure the relevant indicators of the underlying soil, which cannot meet the needs of measuring the depth indicators of each soil layer;

[0007] (3) In terms of box packing selection: In the indoor test, only one set of proportioning tests can be carried out each time, and the thickness and order of each component packing must be determined in advance. The order and random replacement of a certain layer of filler formula require the replacement of the entire box filler, which greatly reduces the efficiency of the test

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