Hillside road edge drainage system

Abstract

The utility model discloses a hillside road edge drainage system, relates to the field of hillside road drainage, and particularly aims to solve the problems that drainage efficiency is reduced, cleaning and maintenance frequency and cost are increased, safety of a road surface is affected and the like due to the fact that a traditional drainage ditch in the background technology is easy to block. In order to solve the problems that in the prior art, a slope road edge drainage system is designed, an additional edge connecting structure is designed at the junction of a slope and a road surface, the edge connecting structure is matched with the inclined road surface, the problem that a drainage ditch is blocked due to fallen leaves and soil accumulation is solved, the drainage efficiency is improved, and the service life of the drainage ditch is prolonged. The maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of mountain slope road drainage, specifically relates to a mountain slope road edge drainage system. BACKGROUND

[0002] Due to the influence of steep terrain and rainwater scouring, mountain slope roads often face the problem of large amounts of soil and fallen leaves accumulation, and traditional drainage ditch design is prone to blockage in these environments, resulting in reduced drainage efficiency. In densely vegetated areas, rainwater can carry a large amount of debris into the drainage ditch, causing water flow retention and poor drainage, not only increasing the frequency and cost of cleaning and maintenance, but also affecting road safety. Especially in heavy rain, the drainage ditch is difficult to cope with a large amount of water flow, and it is easy to form road surface water, further eroding the roadbed, and even causing landslides and other safety hazards.

[0003] Therefore, it is urgent to design a mountain slope road edge drainage system to solve the above problems. INVENTION CONTENTS

[0004] In view of the problems in the above-mentioned traditional drainage ditch design, such as easy blockage leading to reduced drainage efficiency, increased frequency and cost of cleaning and maintenance, and affecting road safety, especially in heavy rain, the utility model provides an innovative mountain slope road edge drainage system, which sets an edge structure with an inclination at the junction of the slope and the road surface to guide rainwater and debris to naturally collect and drain along the edge. Through this design, the scouring action of the water flow can achieve self-cleaning, reduce the deposition of debris in the drainage system, and effectively reduce the risk of drainage ditch blockage. The system has a simple structure and is convenient to construct, and is particularly suitable for mountain slope road environments with abundant rain and vegetation coverage, which can significantly improve the drainage efficiency and the service life of the road.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A mountain slope road edge drainage system, comprising a mountain slope, a tamped structure of asphalt or cement pavement, and a road surface arranged between two mountain slopes, further comprising an edge connecting structure arranged between the mountain slope and the road surface for collecting and guiding water flow and debris, wherein the road surface is inclined, and the longitudinal section of the edge connecting structure is a triangular structure.

[0007] Preferably, the inclination angle of the road surface is 3°-5°.

[0008] Preferably, one angle of the edge connecting structure is 10°, and the angle is in contact with the edge of the road surface.

[0009] Preferably, the length of the inclined surface of the edge connecting structure is 30 cm.

[0010] Preferably, the edge connecting structure has a side length of 10cm near the side of the hill slope.

[0011] Preferably, an asphalt or concrete layer is arranged on the slope of the edge connecting structure to increase the erosion resistance of the edge connecting structure.

[0012] Preferably, a non-slip coating is sprayed on the slope of the edge connecting structure to improve the durability of the edge connecting structure and increase the surface friction.

[0013] Preferably, an asphalt felt is arranged at the connection between the hill slope and the road surface to prevent water from penetrating into the foundation of the road surface.

[0014] The beneficial effects of the present application are as follows: The utility model discloses a kind of hill slope road edge drainage systems, compared with prior art, the improvement of the utility model is in that:

[0015] The utility model tilts the whole road surface, so that rainwater flows naturally to the inside edge under the action of gravity without additional guidance. The triangular edge connecting structure is arranged between the road surface and the hill slope, which can effectively collect water and debris left on the hill slope to one side of the road surface. The triangular edge connecting structure on the other side guides the water flow and debris along the edge of the road surface to drain, avoiding water retention. The drainage system formed by the road surface, the triangular edge connecting structure and the hill slope can achieve drainage effect in rainy season. The use of water flow scouring effect to drive debris out reduces the cleaning needs of the drainage system and maintenance costs.

[0016] Further, the inclination angle of the road surface and the angle of the edge connecting structure are determined and arranged without affecting the normal driving of vehicles. The natural collection and discharge of rainwater and debris in the actual hill slope environment are further satisfied, the deposition of debris in the drainage system is reduced, and the risk of drainage ditch blockage is effectively reduced. The system has a simple structure and is convenient to construct, and is particularly suitable for hill slope road environments with abundant rainwater and vegetation coverage, which can significantly improve drainage efficiency and road service life. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the hill slope road edge drainage system of the utility model;

[0018] Figure 2 It is a construction schematic diagram of the hill slope road edge drainage system of the utility model;

[0019] Wherein: 1. hill slope; 2. road surface; 3. edge connecting structure. DETAILED DESCRIPTION

[0020] In order to make ordinary skilled in the art better understand the technical scheme of the present application, the technical scheme of the present application will be further described below in conjunction with the drawings and examples.

[0021] Embodiment:

[0022] Referring to the drawings Figures 1-2 The slope 1, the road surface 2, and the edge connecting structure 3 are shown in a mountain slope road edge drainage system, the road surface 2 is arranged between the two slopes 1, and is a rammed structure asphalt or cement road surface, the edge connecting structure 3 is arranged between the slope 1 and the road surface 2, and is used to guide the rainwater and debris to naturally collect and drain along the edge of the slope 1 or the road surface 2; the road surface 2 is arranged obliquely, and the included angle with the horizontal plane is 3°-5°, the cross section of the edge connecting structure 3 is a triangular structure, preferably a right-angled triangle, and the material can be metal, stainless steel and concrete, and the inside can be hollow for transportation, the angle of the corner of the edge connecting structure 3 close to the road surface 2 is 10°, which can effectively drain water under the rainfall of 50mm / h, and avoid debris retention, the length of the inclined surface is 30cm, and the side length close to the slope 1 is 10cm; the setting of the drainage system realizes the self-guiding drainage of rainwater and debris, and does not depend on the traditional drainage ditch structure, thereby effectively reducing the risk of blockage;

[0023] 1. In the actual environment, the determination method of the inclination angle of the road surface 2 is:

[0024] The inclination angle of the road surface 2 is calculated according to the current rainfall intensity, the peak rainfall intensity and the road surface width, in the embodiment, the rainfall intensity is 50mm / h, the peak rainfall intensity can reach 100mm / h, and the road surface width is 4m (the general single lane width of mountain slope road);

[0025] The inclination angle of the road surface 2 is determined according to the Manning formula, to ensure that the target water flow velocity is reached, so that the water flow is smoothly drained, and the water flow velocity calculation formula is:

[0026]

[0027] Among them:

[0028] v is the water flow velocity, in the embodiment, the target is 0.3m / s;

[0029] n is the Manning roughness coefficient, in the embodiment, the road surface 2 is a concrete road surface, and the Manning roughness coefficient is 0.015;

[0030] R is the hydraulic radius, which is approximately equal to the water layer thickness, in the embodiment, the water layer thickness is 5mm, i.e. 0.005m;

[0031] S is the slope, equal to sin(θ);

[0032] The above data is brought into the water flow velocity calculation formula to obtain the range of the corresponding inclination angle of the road surface 2:

[0033]

[0034] The solution S ≈ 0.05 corresponds to an inclination angle of about 3°, so the road surface inclination angle is selected between 3° and 5° to meet the drainage requirements under different rainfall intensities.

[0035] 3 degrees is the theoretical value calculated by the Manning formula, ensuring that the water flow velocity meets the requirements under specific rainfall intensity and road surface conditions. However, to address different actual conditions such as changes in rainfall intensity, terrain diversity, and vehicle driving safety, a range of inclination angles needs to be set. 5 degrees as the upper limit ensures the effectiveness of the drainage system under higher rainfall intensity, while avoiding the impact of excessive angle on vehicle driving safety. Therefore, the range of 3-5 degrees is a balanced consideration of water flow velocity requirements, terrain factors, vehicle safety, and construction feasibility, ensuring drainage effectiveness and system stability under various actual conditions.

[0036] 2. Verify whether the determined road surface 2 inclination angle meets the flow requirements

[0037] In this embodiment, the rainfall is 50 mm / h, and the catchment area is 4 square meters, so the total drainage volume per hour is: Q = 0.05 m × 4 m 2 = 0.2 m 3 / h; Since 0.2 m / s is less than the target drainage volume 0.3 m / s in this embodiment, the 3°-5° inclination angle can meet this flow requirement.

[0038] 3. Verification of the drainage capacity of the edge connection structure 3

[0039] The water flow Q1 of the edge connection structure 3 is calculated by the formula Q1 = A × v, where A is the water flow cross-sectional area and v is the water flow velocity;

[0040] In this embodiment, the water flow thickness is 5 mm, so A = 0.3 × 0.05 = 0.0015 m 2 ; v is 0.3 m / s, so Q1 = 0.0015 × 0.3 = 0.00045 m 3 / s, the drainage volume is equivalent to 1.62 m 3 / h, the drainage volume 1.62 is greater than the rainfall 0.05, indicating that the drainage system can easily drain the rainfall and provide a margin for possible water fluctuations and additional requirements, so it can drain most of the rainfall.

[0041] That is, the inclined edge of the edge connecting structure 3 is set to 0.3 meters, and the angle of the corner close to the road surface 2 is set to 10°, which can meet the effective drainage under the rainfall of 50mm / h, and avoid the retention of sundries, at this time the water flow generates enough scouring force on the sundries, so that it is discharged with the water flow, and the accumulation is reduced.

[0042] Construction method of mountain slope road edge drainage system:

[0043] 1. Foundation treatment

[0044] Firstly, the mountain slope 1 and the road surface 2 of the mountain slope road are treated, to ensure that the foundation is flat and stable, and meets the design requirements. During construction, the sundries on the mountain slope 1 are cleaned, and the joint is reinforced to prevent uneven settlement or loose phenomenon in the future. During the foundation construction of the road surface 2, a 20cm-thick ordinary rammed layer is laid, and a layered ramming process is adopted to ensure the compactness and uniformity of the ordinary rammed layer, and to provide stable support for the upper layer. After the completion of the ordinary rammed layer, a 20cm-thick lime-soil rammed layer is laid, and a layered ramming process is also adopted to further improve the bearing capacity and compression resistance of the foundation, and to enhance the water resistance and durability of the foundation;

[0045] At the connection between the mountain slope 1 and the road surface 2, asphalt felt is specially used for treatment to enhance the water resistance and scouring resistance of the connection. The asphalt felt can effectively prevent water from penetrating into the foundation, avoid wear and tear and damage caused by long-term water scouring, and improve the durability and stability of the connection.

[0046] 2. Road surface inclination angle adjustment

[0047] When laying the road surface 2, precise measuring instruments such as electronic level are used for angle adjustment to make the road surface overall inclined at an angle of 3° to 5°. The inclination angle needs to be strictly controlled to ensure that the rainwater can naturally flow to the edge of the road surface under the action of gravity. To increase the durability of the inclined edge, the edge of the road surface can be thickened to increase the thickness to enhance the impact resistance, which can better withstand the scouring action of rainwater and sundries, thereby effectively reducing the need for later maintenance.

[0048] In the given Figure 1 , the road surface 2 is inclined to the left side of the mountain slope. However, according to the actual topographic conditions and drainage requirements, the inclination direction of the road surface 2 is not fixed, and the road surface 2 can be inclined to the right side of the mountain slope or to the left side of the mountain slope. The specific inclination direction needs to be determined comprehensively according to the topographic layout of the site, the overall design of the drainage system, and traffic safety and other factors.

[0049] 3. Edge connecting structure construction

[0050] An edge connecting structure 3 is arranged at the connection between the hillside 1 and the road surface 2, the length of the inclined edge (inclined layer) is 0.3 meters, the inclined edge needs to be accurately shaped according to the design angle during construction, to ensure that the water flow and sundries can be smoothly collected and naturally discharged, the material of the inclined layer is selected to be wear-resistant asphalt or cement concrete, so as to increase the erosion resistance of the edge area and avoid wear caused by long-term water flow erosion. After the construction is completed, an anti-skid coating can be sprayed on the surface of the inclined edge, to further improve the durability and increase the surface friction, and prevent sundries from affecting the drainage effect.

[0051] 4. Use effect

[0052] The hillside road edge drainage system is suitable for a hillside road environment with more rainfall, and through reasonable inclined structure, water flow and sundries are naturally guided and discharged during rainfall, and the risk of blockage of traditional drainage ditches by sundries such as fallen leaves and soil is reduced. Unlike the traditional drainage system, the system relies on the inclination of the road surface as a whole of 3° to 5° and the additional inclination of the edge of 10°, so that the rainwater is effectively self-guided and discharged in the road surface and edge area, thereby ensuring the flowability of the water flow.

[0053] Under the condition of moderate to heavy rain with a rainfall intensity of 50mm / h, through design optimization, the concentrated discharge speed of the water flow at the edge can reach 1.62m 3 / h, which can quickly drain rainwater and avoid the occurrence of road waterlogging, thereby improving the safety of the road. The flow process of the water flow along the inclined edge can drive the road sundries to be discharged with the water flow, to realize the self-cleaning function, reduce the accumulation of sundries, avoid blockage, and reduce the frequency of manual cleaning and maintenance cost. The system not only improves the drainage efficiency, but also prolongs the service life of the road, and provides a stable and reliable drainage solution for the hillside road with more rainfall and easy accumulation of sundries. Although the embodiments in the patent are mainly aimed at a specific road surface structure, it can be applied to other types of road surfaces by adjusting the design parameters.

[0054] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A mountain slope road edge drainage system comprising a mountain slope (1), a rammed structure asphalt or cement pavement (2), and the pavement (2) is arranged between two mountain slopes (1), characterized in that: The edge connecting structure (3) is arranged between the hillside (1) and the road surface (2) to collect and guide water flow and sundries, wherein the road surface (2) is arranged in an inclined manner, and the longitudinal section of the edge connecting structure (3) is in a triangular structure.

2. A mountain road edge drainage system according to claim 1, characterized in that: The inclination angle of the road surface (2) is 3-5°.

3. A mountain road edge drainage system according to claim 1, characterized in that: One of the angles of the edge connecting structure (3) is 10°, and the angle is in contact with the edge of the road surface (2).

4. A mountain road edge drainage system according to claim 1, characterized in that: The length of the inclined surface of the edge connecting structure (3) is 30 cm.

5. A mountain road edge drainage system according to claim 1, characterized in that: The side length of the edge connecting structure (3) close to the hillside (1) is 10 cm.

6. A mountain road edge drainage system according to claim 4, characterized in that: An asphalt or concrete layer is arranged on the inclined surface of the edge connecting structure (3) to increase the erosion resistance of the edge connecting structure (3).

7. A mountain road edge drainage system according to claim 6, characterized in that: A non-slip coating is sprayed on the inclined surface of the edge connecting structure (3) to improve the durability of the edge connecting structure (3) and increase the surface friction.

8. A mountain road edge drainage system according to claim 1, characterized in that: An asphalt felt is arranged at the joint of the hillside (1) and the road surface (2) to prevent water from penetrating into the foundation of the road surface (2).

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