Roof greening water retention test apparatus and test method of flat roof

Abstract

The invention relates to roof greening water retention test apparatus and test method of a flat roof. The test apparatus includes a rainwater simulation module, a roof greening module, a test module,a water purifying module, a support platform, a rectangular bearing frame, a main water pump, a sub-water pump, and a water tank. The roof greening module is placed on the support platform which is mounted on the rectangular bearing frame; the water tank and the water purifying module are arranged in the rectangular bearing frame; the main water pump is arranged in the water tank and is connectedto the rainwater simulation module; the sub-water pump is disposed in the water purifying module and is connected to the water tank; the rainwater simulation module is disposed above the roof greeningmodule; the test module includes a measuring cylinder, a rain gauge sensor, and a soil humidity sensor. Compared with the prior art, the test apparatus can test the retention and accumulation effectof roof greening with different planting substrates and plants during application at different rainfalls. The test apparatus and method have simple control method and can bring huge convenience to roof greening researching.

Description

technical field [0001] The invention relates to a test device and method, in particular to a test device and test method for the water retention of green roofs with flat 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 ecological environment prob...

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

Images