Experimental device and method for study on best mode for constructing vegetation buffer strips with different slopes
A technology of vegetation buffer strips and experimental devices, which is applied in the field of experimental devices to study the best way to construct vegetation buffer strips with different slopes, and can solve problems such as experimental errors, lack of impact factors of buffer strips, and failure to consider factors affecting slopes
Inactive Publication Date: 2018-08-07
BEIJING FORESTRY UNIVERSITY
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Problems solved by technology
[0010] The experimental device is mainly suitable for submersion experiments. The scour test does not consider the energy dissipation of the scour water flow, so when studying the interception effect of the vegetation buffer zone, the force of the water flow itself will cause a large experimental error.
Moreover, the device does not take into account the main influencing factor of slope, and the most important influencing factors in the study of the buffer zone are lacking.
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[0043] Such as figure 2 , image 3 As shown, the experimental device includes a water distribution tank (with an automatic stirring system in the tank), a water pump, a water delivery pipe, a turbulent flow tank to reduce the force of the water flow, a flow meter to control the flow rate, two experimental soil tanks with the same specifications, and A water outlet, a number of small buckets for receiving runoff water samples, and a hydraulic device that can adjust the slope of the soil tank.
[0044] The size of the distribution pool is a cuboid (length x width x height) 1.0m x 1.0m x 0.50m, and the automatic agitators in the distribution pool are all made of iron impellers. The specifications of the two soil tanks are the same, and the specifications are (length×width×height) 5.0m×1.0m×0.50m cuboid soil tank, and the size of the soil tank is designed according to the needs of the experimental design. A turbulent flow pool is designed at the front end of the soil tank, and ...
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The invention discloses an experimental device and a method for study on a best mode for constructing vegetation buffer strips with different slopes. The experimental device comprises two experimentalsoil grooves with same specification and side-by-side arrangement, wherein the tail ends and the outer sides of the two experimental soil grooves are respectively provided with water outlets; a turbulent-flow pool is arranged at the front ends of the two experimental soil grooves and is connected with a water distributing system; the two experimental soil grooves are connected with a slope-adjusting hydraulic device. The experimental device also comprises a plurality of small barrels for receiving runoff water samples. The water distributing system is provided with a water distributing pool with proportioned and simulated cultivated-land rainfall runoffs, a water pump, a water delivery pipe and a flow meter for controlling the flow rate; a stirring device is arranged in the water distributing pool. The experimental device and method disclosed by the invention have the beneficial effects that different types of buffer strips are constructed in the soil grooves with adjustable slopes, and then a washout experiment is carried out so as to study the best mode with best intercepting effect under different slopes and study the best mode for constructing the vegetation buffer strips withdifferent slopes indoors.
Description
technical field [0001] The invention relates to an experimental device for studying the best way to construct a vegetation buffer zone with different slopes, in particular to an experimental device and method for studying the best way to build a vegetation buffer zone with different slopes. Background technique [0002] At present, agricultural source pollution has surpassed industrial pollution and domestic pollution to become the main source of environmental pollution. Agricultural non-point source pollution has become the most important problem endangering the quality of water body environment. Vegetation buffer zone can effectively intercept most non-point source pollutants (nitrogen, Phosphorus, sediment), can effectively prevent non-point source pollutants from entering the water body and threatening the health of the water environment. [0003] At present, the research on vegetation buffer zone mostly adopts the method of field slope observation, but the field slope e...
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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 王云琦付婧梁丹丁雪坤
Owner BEIJING FORESTRY UNIVERSITY