Testing device for roof greening rainwater detention storage performance of sloping roof and testing method

Abstract

The invention relates to a testing device for the roof greening rainwater detention storage performance of a sloping rood, which comprises a rainwater simulation module, a sloping roof greening simulation module, a testing module, a water purification module, a support platform, a rectangular load-bearing frame, a main water pump, secondary water pump and a water storage tank, wherein the slopingroof greening simulation module is placed on the support platform, the support platform is installed on the rectangular load-bearing frame, the rainwater simulation module is arranged above the sloping roof greening simulation module, the sloping roof greening simulation module includes a structure frame, a plurality of replaceable module layers, a lifting mechanism and an angle meter, the liftingmechanism is arranged between the structure frame and the support platform, and the angle meter is arranged in the structure frame; and the testing module includes a measuring cylinder, a rain gaugesensor and a soil moisture sensor. Compared with the prior art, the testing device realizes real-time measurement for a detention storage effect imposed on different rainfalls by different slopes anddifferent roof greening applications, the control mode is simple and convenient, and great convenience can be brought to the roof greening research.

Description

technical field [0001] The invention relates to a test device and method, in particular to a test device and a test method for the rainwater storage performance of roof greening of sloping roofs. Background technique [0002] With the rapid development of urbanization, the impervious area of ​​the city increases, which increases the runoff of rainwater on the surface, the peak flow on the surface increases and the time is advanced, and the city is more prone to sudden rainstorms. At present, the drainage capacity of most cities in my country is limited, which makes the Cities are more prone to rain and floods. Urban green roofs can use plants and growth substrates to retain rainwater, reduce surface runoff, and reduce urban rainfall peak runoff, thereby reducing the pressure on the urban drainage network and reducing the occurrence of urban floods. In addition, roof greening is also an effective measure to increase urban green coverage and alleviate urban energy and ecologic...

AI Technical Summary

Problems solved by technology

[0003] Although roof greening is a research hotspot in mitigating stormwater runoff, there are large deviations in the quantification of intercepted rainwater, even among different experiments in the same area.

On the one hand, the results are not conducive to the comparability of research results, it is difficult to synthesize multiple experimental results to obtain general conclusions, and the repeatability is poor; on the other hand, it is difficult to establish clear quantitative indicators when formulating specific stormwater runoff control targets for a city system

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