Device and method for simulating permeable pavement stormwater runoff approximate test

A technology of permeable pavement and simulation device, which is applied in the direction of measurement device, permeability/surface area analysis, suspension and porous material analysis, etc., and can solve problems affecting surface runoff water depth and flow velocity, and affecting runoff carrying sediment, etc.

Active Publication Date: 2014-12-10
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These complex effects affect the water depth and flow velocity of surface runoff, and will greatly affect the ability of runoff to carry sed...

Method used

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  • Device and method for simulating permeable pavement stormwater runoff approximate test
  • Device and method for simulating permeable pavement stormwater runoff approximate test
  • Device and method for simulating permeable pavement stormwater runoff approximate test

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0053] Four groups of slopes (S 0 ) to test the influence of the road surface slope on the stormwater runoff on the permeable pavement, which are: 0.0035, 0.0105, 0.0175 and 0.0244, the inflow flow (Q) is fixed at 6.00l / min, the infiltration flow (Q 1 ) is 5% of the inflow flow.

[0054] Figure 4 The flow velocity distribution curves of the permeable pavement runoff with different slopes are given. Obviously, larger slopes will result in higher flow velocities at the fluid / pervious pavement interface and in the turbulent flow region. Therefore, the use of gentle slopes in the design of permeable pavements can effectively reduce the velocity of storm runoff. according to Figure 4 The water depth change under different slopes can also be obtained, and the water depth obtained in the test decreases with the increase of the slope.

example 2

[0056] In this experiment, four groups of inflow flows (Q) were selected to test the influence of inflow flows on the stormwater runoff on the permeable pavement, respectively: 3.20L / min, 4.50L / min, 6.00L / min, and 6.80L / min, The slope is fixed at 0.0105, the infiltration flow (Q 1 ) is 5% of the inflow flow.

[0057] Figure 5 The flow velocity distribution curves of permeable pavement runoff with different inflow flows are given, and the test flow velocity increases significantly with the increase of inflow flow; according to Figure 5 The variation trend of water depth increasing with the increase of inflow flow can also be obtained under different inflow flows.

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Abstract

The invention discloses a device and method for simulating a permeable pavement stormwater runoff approximate test. The device comprises a water trough, wherein a support capable of regulating the slope of a permeable pavement model is arranged at the bottom of the water trough; the permeable pavement model is arranged inside the water trough; supporting plates extending to the head part and the tail part of the water trough are arranged at the head part and the tail part of the permeable pavement model; water draining pipes are arranged at the bottoms of the supporting plate; a device for reducing vortexes and bubbles caused by water flow state change is arranged on the supporting plate at the inlet of the water trough; the device is formed by a suction pipe array; a constant-water head water tank I communicated with the interior of the water trough is arranged at the head part of the water trough; a water tank II communicated with the interior of the water trough is arranged at the tail part of the water trough; water in the water tank I and the water tank II flow circularly in a test simulating system through a water pump; a set of particle velocity field instrument for measuring the velocity field is arranged above the permeable pavement model.

Description

technical field [0001] The invention relates to the determination of an approximate test simulation method for stormwater runoff on a permeable pavement, and belongs to the field of civil engineering. Background technique [0002] Permeable pavement is also called porous pavement, including permeable concrete pavement and OGFC (open graded anti-skid wear layer) asphalt pavement, etc. There are a large number of penetrating pores inside the coarse aggregate skeleton. The high-porosity structure of the permeable pavement allows rainwater to infiltrate effectively into the ground, reducing urban surface runoff. Under the guidance of the concept of sustainable development, the research and application of permeable pavement engineering in my country has developed rapidly in recent years, which will play a huge role in solving the problem of poor drainage in metropolitan cities. A rough permeable pavement has a strong influence on the free surface runoff over it as well as the fl...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 张炯崔新壮侯飞黄丹汤潍泽
Owner SHANDONG UNIV
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