Design method of airport stainless steel sewage interception and water guide

Abstract

The application discloses a design method of an airport stainless steel sewage intercepting and water guiding device, which comprises a longitudinal stainless steel water guiding groove, a slope stainless steel water guiding groove, an opening design, water guiding groove stability evaluation and a water guiding groove arrangement method. The longitudinal stainless steel water guiding groove and the slope stainless steel water guiding groove are connected at the joint of a slope rapid flow groove and a slope retaining wall. The application aims at reasonably improving rainwater utilization raw water quality and reducing the risk of drainage ditch blockage. The application reduces the artificial watering amount of a green belt in a slope grass planting area, realizes effective utilization of rainwater resources and reduces the water consumption of the green belt. The sewage intercepting device has the advantages of simple structure, adjustable shape, low price and convenient installation and dismounting.

Description

Technical Field

[0001] This invention relates to the field of sewage interception and water diversion technology, specifically to a design method for stainless steel sewage interception and water diversion in airports. Background Technology

[0002] For high-fill airports, slope stability is crucial for airport operation. The off-site drainage design for high-fill airports often involves tiered arrangements along the slope. During slope drainage, the upstream section is eroded by rainwater, and soil particles, garbage, bird droppings, mud, and other impurities are easily carried along the slope and flow into the downstream drainage ditch, causing blockages, poor water quality, siltation, and foul odors. Secondly, for high-fill airports in arid regions, rainfall is low and often discharged directly off-site; furthermore, the rainwater quality is poor and cannot be directly used for slope vegetation. A dedicated rainwater harvesting system is needed to meet certain water demands, increasing airport maintenance costs. Therefore, it is necessary to leverage the interception and drainage functions of high-fill airport slopes through flexible arrangement and use of intercepting and diverting structures, improving the quality of harvested rainwater and reducing investment in slope vegetation irrigation. This invention provides a stainless steel intercepting and diverting design method for airports to address this problem. Summary of the Invention

[0003] The purpose of this invention is to rationally improve the quality of raw water for rainwater utilization and reduce the risk of drainage ditch blockage. It also reduces the amount of water needed for manual irrigation in grassy areas on slopes, achieving effective utilization of rainwater resources while lowering water consumption for greening. The interception device is simple in structure, adjustable in shape, inexpensive, and easy to install and disassemble.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A design method for stainless steel intercepting and guiding water in airports includes a longitudinal stainless steel water guide channel, a slope stainless steel water guide channel, an opening design, a stability evaluation of the water guide channel, and a water guide channel layout method. The longitudinal stainless steel water guide channel and the slope stainless steel water guide channel are connected at the junction of the slope rapid flow channel and the slope retaining wall.

[0006] Longitudinal stainless steel water guide channel: Multiple stainless steel trapezoidal channels are spliced ​​and fixedly installed on both inner sides of the longitudinal drainage ditch on the slope, and extended along the length of the drainage ditch.

[0007] Slope stainless steel water guide channel: Multiple stainless steel trapezoidal channels are fixedly installed on the outside of the slope retaining wall and extend along the length of the slope retaining wall;

[0008] Opening design: The bottom surface of the stainless steel trapezoidal tank is provided with a bottom water guide hole, which is a round hole. The opening design method is as follows:

[0009] Calculate the outflow rate Q of a single orifice 孔 The calculation formula is: Q 孔 =μω×(2gh) 0.5 Where Q_orifice is the outflow rate of a single orifice, μ is the orifice flow coefficient with a value of 0.62, ω is the orifice area, and h is the local loss at the orifice.

[0010] The number of openings, n, in a water channel of a given length is calculated using the formula: n = Q 槽 / Q 孔 Where n is the number of openings in the water guide channel, which is a multiple of 10, Q 槽 The flow rate within the guide channel is determined by the cross-sectional area A of the guide channel and the flow velocity v within the channel, i.e., Q. 槽 =Av;

[0011] Water channel stability evaluation: The stability of the water channel is evaluated by the opening ratio f. To avoid the opening from causing a decrease in the stability of the water channel, the opening ratio f should be less than 2%. The formula for calculating the opening ratio f is: f=n·ω / (Lb)×100%, where f is the opening ratio, L is the length of the stainless steel water channel on the slope, and b is the width of the channel bottom.

[0012] Water guide channel arrangement: The water guide holes at the bottom of the channel are arranged in segments with equal spacing or with variable spacing.

[0013] Furthermore, the longitudinal section of the stainless steel trapezoidal groove is a right-angled trapezoidal groove, the bottom width of the stainless steel trapezoidal groove is 10cm, the inclination of the inclined surface of the stainless steel trapezoidal groove is 45°, and the thickness of the stainless steel trapezoidal groove is 0.5 to 1.0mm.

[0014] Furthermore, the stainless steel trapezoidal groove is provided with fixing holes, and fixing nails are inserted through the fixing holes to connect it to the longitudinal drainage ditch and retaining wall of the slope.

[0015] Furthermore, the local loss h at the orifice can be calculated using the formula: h = v 2 / 2g is determined, where v is the average flow velocity at the orifice.

[0016] Furthermore, a segmented, equally spaced arrangement is adopted: when the total length of the stainless steel trapezoidal channel does not exceed 100m; two apertures are distinguished according to the near and far ends, with the aperture in the near end area being 10-20mm and the aperture in the far end area being 20-30mm; when the total length of the stainless steel trapezoidal channel exceeds 100m; three apertures are distinguished according to the near, middle, and far ends, with the aperture in the near end area being 10-15mm, the aperture in the middle end area being 15-25mm, and the aperture in the far end area being 25-30mm.

[0017] A variable spacing arrangement is adopted: the size of the water guide holes at the bottom of the tank is 10-30mm in diameter, and the spacing between the water guide holes at the bottom of the tank gradually decreases with the direction of water flow.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The stainless steel intercepting and guiding water design method used in this airport effectively filters impurities. The reasonable placement of the stainless steel trapezoidal channel holes effectively reduces the risk of downstream drainage pipe blockage and avoids the instability of the guiding channel caused by openings, while ensuring uniform water distribution throughout the entire water distribution area. This improves the quality of collected rainwater, protects the airport slope, and effectively reduces engineering maintenance investment.

[0020] 2. Highly applicable and easy to install. It fully utilizes the high shear and tensile strength of stainless steel, providing excellent drainage and seepage prevention. It is reusable, removable, and easy to install, disassemble, and maintain, with low cost and high flexibility. Attached Figure Description

[0021] Figure 1 This is a top view showing the connection between the longitudinal stainless steel water guide channel and the slope stainless steel water guide channel.

[0022] Figure 2 This is a cross-sectional view of the longitudinal stainless steel water guide channel.

[0023] Figure 3 This is a cross-sectional view of the stainless steel water guide channel for the slope.

[0024] Figure 4 This is a schematic diagram of a stainless steel trapezoidal groove structure.

[0025] Figure 5 This is a schematic diagram of the longitudinal section of a stainless steel trapezoidal groove. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0027] A design method for stainless steel intercepting and guiding water in airports, characterized by including a longitudinal stainless steel water guide channel (9), a slope stainless steel water guide channel (8), an opening design, a water guide channel stability evaluation, and a water guide channel layout method, with reference to... Figure 1 As shown, the longitudinal stainless steel water guide channel (9) and the slope stainless steel water guide channel (8) are connected at the junction of the slope rapid flow channel (7) and the slope retaining wall (5). By arranging the longitudinal stainless steel water guide channel (9) and the slope stainless steel water guide channel (8) on the airport slope, the function of intercepting sewage and guiding water for slope drainage is realized.

[0028] refer to Figure 2As shown, the longitudinal stainless steel water guide channel (9) is configured by splicing and fixing multiple stainless steel trapezoidal channels (1) on both sides of the longitudinal drainage ditch (4) on the slope and extending along the length of the drainage ditch. Adjacent sections of stainless steel trapezoidal channels (1) are fixedly connected by screws.

[0029] refer to Figure 3 As shown, the stainless steel water guide channel (8) of the slope is configured by fixing multiple stainless steel trapezoidal channels (1) on the outside of the slope retaining wall (5) and extending along the length of the slope retaining wall (5). Adjacent sections of stainless steel trapezoidal channels (1) are fixedly connected by screws.

[0030] Opening design: The bottom surface of the stainless steel trapezoidal groove (1) is provided with a bottom water guide hole (10), which is a round hole. The opening design method is as follows:

[0031] Calculate the outflow rate Q of a single orifice 孔 The calculation formula is: Q 孔 =μω×(2gh) 0.5 Where Qorifice is the outflow rate of a single orifice, μ is the orifice flow coefficient (μ = 0.62), ω is the orifice area, and h is the local loss at the orifice, which can be calculated using the formula: h = vorifice 2 / 2g is determined, where v is the average flow velocity at the orifice, and this parameter is related to the water depth of the stainless steel guide channel on the slope, etc.

[0032] The number of openings, n, in a water channel of a given length is calculated using the formula: n = Q 槽 / Q 孔 Where n is the number of openings in the water guide channel, which is a multiple of 10, Q 槽 The flow rate within the guide channel is determined by the cross-sectional area A of the guide channel and the flow velocity v within the channel, i.e., Q. 槽 =Av;

[0033] With v = 2 m / s and A = 750 cm 2 For example, the results are shown in the table below:

[0034]

[0035] n = Q 槽 / Q 孔 =0.15 / 0.000219 = 685, take multiples of 10, n = 680;

[0036] Stability evaluation of the water guide channel: The stability of the water guide channel is evaluated by the opening ratio f. In order to avoid the opening causing the stability of the water guide channel to decrease, the opening ratio f should be less than 2%. The formula for calculating the opening ratio f is: f=n·ω / (Lb)×100%, where f is the opening ratio, L is the length of the slope stainless steel water guide channel (8), and b is the bottom width of the channel.

[0037] Based on the above data, we can conclude that:

[0038]

[0039] Considering the stability of the water guide channel, the ratio of the opening area to the bottom area of ​​the channel should be 1.2%. If the value is less than 2%, the opening diameter and number of openings are considered reasonable. Otherwise, the calculation should be repeated until the opening ratio is less than 2%.

[0040] Water guide channel arrangement: The water guide holes (10) at the bottom of the channel are arranged in segments with equal spacing or with variable spacing.

[0041] Example 2:

[0042] Based on the above embodiments, refer to Figure 4-5 As shown, the longitudinal section of the stainless steel trapezoidal groove (1) is a right-angled trapezoidal groove, the width of the bottom edge of the stainless steel trapezoidal groove (1) is 10cm, the inclination of the inclined surface of the stainless steel trapezoidal groove (1) is 45°, and the thickness of the stainless steel trapezoidal groove (1) is 0.5~1.0mm. The stainless steel trapezoidal groove (1) is provided with fixing holes (2), and fixing nails (3) are inserted into the fixing holes (2) to connect with the longitudinal drainage ditch (4) of the slope and the slope retaining wall (5).

[0043] Example 3:

[0044] Based on Example 1, a further arrangement of the water guide channel is as follows:

[0045] The arrangement is segmented and evenly spaced: When the total length of the stainless steel trapezoidal groove (1) does not exceed 100m; two apertures are distinguished according to the near end and the far end, with the aperture of the near end area being 10-20mm and the aperture of the far end area being 20-30mm; When the total length of the stainless steel trapezoidal groove (1) exceeds 100m: three apertures are distinguished according to the near end, middle end and the far end, with the aperture of the near end area being 10-15mm, the aperture of the middle end area being 15-25mm, and the aperture of the far end area being 25-30mm; the segmented and evenly spaced arrangement is shown in the table below:

[0046]

[0047] A variable spacing arrangement is adopted: the size of the bottom water guide hole (10) is 10-30mm in diameter. The spacing between the bottom water guide holes (10) gradually decreases with the direction of water flow. The water flow rate and velocity are small at the end of the water flow direction, so the water guide holes can be arranged more densely. The spacing between the two holes at the beginning is not less than 10mm.

[0048] Although the invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various modifications and improvements can be made to the components or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides modifications and improvements to the components or layout, other uses will be apparent to those skilled in the art.

Claims

1. A design method for stainless steel sewage interception and drainage systems in airports, characterized in that, The system includes a longitudinal stainless steel water guide channel (9), a slope stainless steel water guide channel (8), an opening design, a water guide channel stability evaluation, and a water guide channel layout method. The longitudinal stainless steel water guide channel (9) and the slope stainless steel water guide channel (8) are connected at the junction of the slope rapid flow channel (7) and the slope retaining wall (5). The longitudinal stainless steel water guide channel (9) consists of multiple stainless steel trapezoidal channels (1) spliced ​​and fixed on both sides of the longitudinal drainage ditch (4) of the slope, and extended along the length of the drainage ditch. The slope stainless steel water guide channel (8) consists of multiple stainless steel trapezoidal channels (1) fixed on the outside of the slope retaining wall (5), and extended along the length of the slope retaining wall (5). The opening design is as follows: the bottom surface of the stainless steel trapezoidal channel (1) is provided with a bottom water guide hole (10), which is a round hole. The opening design method is as follows: calculate the outflow rate Q of a single orifice. 孔 The calculation formula is: Q 孔 =μω×(2gh) 0.5 ; where Q 孔 Let ω be the flow rate of a single orifice, μ be the orifice flow coefficient (μ = 0.62), ω be the orifice area, and h be the local loss at the orifice. The number of orifices n in a given length of guide channel is calculated using the formula: n = Q 槽 / Q 孔 Where n is the number of openings in the water guide channel, which is a multiple of 10, and Q 槽 The flow rate within the guide channel is determined by the cross-sectional area A of the guide channel and the flow velocity v within the channel, i.e., Q. 槽 = Av; Stability evaluation of the water guide channel: The stability of the water guide channel is evaluated by the opening ratio f. In order to avoid the opening causing a decrease in the stability of the water guide channel, the opening ratio f should be less than 2%. The formula for calculating the opening ratio f is: f = n·ω / (Lb)×100%, where f is the opening ratio, L is the length of the slope stainless steel water guide channel (8), and b is the width of the bottom of the channel; Water guide channel arrangement: The water guide holes (10) at the bottom of the channel are arranged in segments with equal spacing or with variable spacing. The local loss h at the opening can be calculated by the formula: h=v 2 / (2g) is determined, where v is the average flow velocity at the orifice.

2. The airport stainless steel sewage interception and drainage design method according to claim 1, characterized in that, The longitudinal section of the stainless steel trapezoidal groove (1) is a right-angled trapezoidal groove, the bottom width of the stainless steel trapezoidal groove (1) is 10cm, the inclination of the inclined surface of the stainless steel trapezoidal groove (1) is 45°, and the thickness of the stainless steel trapezoidal groove (1) is 0.5~1.0mm.

3. The airport stainless steel sewage interception and drainage design method according to claim 1, characterized in that, The stainless steel trapezoidal groove (1) is provided with a fixing hole (2), and the fixing hole (2) is connected to the longitudinal drainage ditch (4) and the slope retaining wall (5) by passing a fixing nail (3).

4. The airport stainless steel sewage interception and drainage design method according to claim 1, characterized in that, The arrangement is divided into segments with equal spacing: when the total length of the stainless steel trapezoidal trough (1) does not exceed 100m; two types of apertures are distinguished according to the near end and the far end, with the aperture of the near end area being 10-20mm and the aperture of the far end area being 20-30mm; when the total length of the stainless steel trapezoidal trough (1) exceeds 100m: three types of apertures are distinguished according to the near end, middle end and the far end, with the aperture of the near end area being 10-15mm, the aperture of the middle end area being 15-25mm and the aperture of the far end area being 25-30mm; the arrangement is made with variable spacing: the size of the water guide hole (10) at the bottom of the trough is 10-30mm in diameter, and the spacing between the water guide holes (10) at the bottom of the trough gradually decreases with the direction of water flow.

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