Approximate simulation device and method for particle transport and permeable pavement blockage under runoff
A permeable pavement and simulation device technology, which is applied in the field of civil engineering, can solve problems such as shortened service life, difficult drainage function of permeable pavement, and reduced permeability of permeable concrete, so as to achieve the effect of optimal design
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specific example 1
[0052] In this test, four groups of inflow flow Q were selected to test the influence of inflow flow on particle transport and permeable pavement blockage, respectively: 3.20L / min, 4.50L / min, 6.00L / min, and 6.80L / min, slope It is fixed at 0.0105, the infiltration flow rate Q1 is 5% of the inflow flow rate, and the particle size is 630-800 μm.
[0053] t=0s indicates that the particles have just started reaching the collection device. The particles collected in the device are the particles added to the water flow through the adding device, and these particles are not blocked in the pores of the permeable pavement but are carried out of the water tank by the runoff. The influence of inflow flow rate on the quality of particles collected by the collection device is as follows: Figure 4 shown. Weighing results show that most of the particles will be transported to the end of the tank under a large inflow flow, while a small part of the particles will be blocked in the permeable...
specific example 2
[0055] In this test, four sets of slope S0 were selected to test the influence of road surface slope on particle transport and permeable pavement blockage, which were: 0.0035, 0.0105, 0.0175 and 0.0244, the inflow flow Q was fixed at 6.00L / min, and the infiltration flow Q 1 It is 5% of the inflow flow, and the particle size is 630-800 μm.
[0056] The influence of road slope on the quality of particles collected by the collection device is as follows: Figure 6 As shown, the single-width transport rate of particles with different road slopes is as Figure 7 shown. Both figures show that more particles can be transported to the end of the pavement at larger pavement slopes, i.e., fewer particles will be clogged in the pores of the permeable pavement, and the single-width transport rate of the particles in the runoff will be greater.
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