Method and device for achieving analog-matching runoff with stable flow and sand content
A technology of stable flow and realization method, which is applied in the field of realization of the planned runoff with stable flow and sediment concentration, and can solve the problems of popularization and application of soil erosion tests, uneven mixing of water and sand in the proposed runoff, unstable runoff sediment concentration, etc. problem, to achieve the effect of eliminating sand deposits, overcoming sediment deposits, and ensuring scientificity and accuracy
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Embodiment 1
[0039] This embodiment provides a water and sand uniform mixing flow distribution device suitable for soil erosion tests, such as figure 1 As shown, it includes a tank body 1, a stirring shaft 2, a head control valve 3 and an outflow gate valve 4; the top 11 of the tank body 1 is provided with an opening; the stirring shaft 2 is arranged at the central position of the tank body 1, and it is from The top 11 of the tank body 1 penetrates to the bottom 12 of the tank body 1 and is fixedly connected with the top 11 and the bottom 12 of the tank body 1 respectively. The impeller 5 is arranged on the stirring shaft 2; the water head control valve 3 and the outflow gate valve 4 They are respectively arranged at the upper middle position and the bottom end position of the outer wall of the tank body 1; the bottom baffle plate 6 is arranged on the bottom inner wall of the tank body 1.
[0040] The tank body 1 in this embodiment is a cylindrical tank body. The use of a cylindrical tank...
Embodiment 2
[0051] Embodiment 2 Test method of the present invention
[0052] The device is designed with reference to the design idea of Embodiment 1 of the present invention. For the convenience of description, this embodiment is described with the following dimensional data.
[0053] 1) getting the device tank body diameter T of the present invention's design is 1.2m, and height h is 1.1m, and material is stainless steel;
[0054] 2) impeller diameter D=0.5T=0.55m, impeller installation height C=0.22m, operating liquid level H=0.6T=0.66m;
[0055] 3) A 50mm water head control ball valve is installed at the operating liquid level, and a 75mm die-casting copper alloy gate valve is connected at the bottom;
[0056] 4) Four stainless steel bottom baffles are welded to the bottom of the device symmetrically in a cross shape, and the specifications are all 0.10m×0.06m;
[0057] 5) According to the parameters of the stirred sediment particles, take the blade inclination angle as 25°, and...
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