Rainwater outlet of landscape hydrophilic river channel

Abstract

The utility model belongs to the field of design of rainwater outlets of urban river channels, and provides a rainwater outlet of a landscape hydrophilic river channel, which comprises a water inlet pipe, a water outlet pipe, an inspection well and a vertical pipe, the rainwater inspection well is communicated with the water inlet pipe, the outer end of the water outlet pipe is communicated with the vertical pipe, and the inner end of the water outlet pipe extends to the inner side of the retaining wall and is communicated with the rainwater inspection well; the top end and the bottom end of the vertical pipe are open, a protective cover is arranged on the outer side of the vertical pipe in a covering mode, the protective cover is of an arc-shaped structure, the top end and the bottom end of the protective cover are open, and the vertical pipe and the protective cover are both fixed to the side wall of the retaining wall. On the one hand, rainwater can be directly drained to the lower portion of a landscape trestle or a clear water platform through the drainage port, a riverbed of the water outlet is protected, and impact of direct drainage of a traditional rainwater drainage port on landscape hydrophilic facilities is avoided. And on the other hand, the appearance design can be further carried out on the protection cover and is integrated into the whole ecological river channel construction.

Description

Technical Field

[0001] The utility model belongs to the field of rainwater outlet design for urban rivers, and in particular relates to a rainwater outlet for a landscape hydrophilic river. Background Art

[0002] With the development of urbanization in my country, people's demands for improving the water environment are increasing. Urban river management has also evolved from the traditional primary management goals of water safety and water resources to taking into account the ecological landscape effect. Under this situation, it has become an important measure to improve the water environment and recreate the ecosystem to build a water-friendly, ecological and regional urban river landscape.

[0003] At present, ecological governance of urban rivers in my country has become a trend and has achieved a lot of success. The outlets connecting the urban drainage network and the river are an important measure to ensure urban water safety. Under the current situation, the construction of outlets should pay more attention to its landscape effect while ensuring drainage safety. Traditional rainwater outlets include eight-shaped, one-shaped, and door-shaped outlets, which are difficult to meet the needs of current landscape hydrophilic rivers.

[0004] In addition, many urban rivers have built landscape trestle bridges, water-friendly trails and other facilities to achieve the goal of water-friendliness. However, the design and construction of these ecological rivers have made traditional rainwater outlets unable to meet current requirements, and it is necessary to introduce targeted outlet design and construction methods that are compatible with river ecological landscape pipes.

[0005] Therefore, in order to accelerate the goal of river ecological management, under the primary goal of ensuring urban water security, it is particularly important to build outlets that are compatible with the landscape. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a rainwater outlet for a landscape hydrophilic river channel, which can be integrated into the ecological landscape of the river channel while ensuring the normal discharge of rainwater, while taking into account the design of the river channel landscape hydrophilic platform.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a rainwater outlet for a landscape hydrophilic river, comprising an inlet pipe, an outlet pipe, a rainwater inspection well arranged on the inner side of a retaining wall, and a riser arranged on the outer side of the retaining wall;

[0008] The rainwater inspection well is connected to the water inlet pipe, the outer end of the water outlet pipe is connected to the vertical pipe, and the inner end of the water outlet pipe extends to the inner side of the retaining wall and is connected to the rainwater inspection well;

[0009] The top and bottom ends of the vertical pipe are open, and a protective cover is provided on the outer side cover of the vertical pipe. The protective cover is an arc-shaped structure, and the top and bottom ends of the protective cover are open. The vertical pipe and the protective cover are both fixed on the side wall of the retaining wall.

[0010] Preferably, the discharge port includes three outlet pipes which are arranged in a "pin" shape.

[0011] Preferably, a water outlet is provided on the side wall of the rain inspection well. The inner end of the outlet pipe is communicated with the water outlet, and a waterproof sleeve is sleeved at the water outlet.

[0012] Preferably, a cover plate is provided at the top opening of the rain inspection well, and the cover plate is flush with the road surface.

[0013] Preferably, the riser pipe is fixed to the side wall of the retaining wall by pipe clamps.

[0014] Preferably, the protective cover is fixed to the side wall of the retaining wall by expansion bolts.

[0015] Preferably, the bottom end of the protective cover is flush with the bottom end of the riser pipe, and the top end of the protective cover is higher than the top end of the riser pipe.

[0016] Preferably, the bottom end of the riser pipe extends into the gutter chute of the hydrophilic walkway.

[0017] Preferably, the bottom end of the riser pipe is lower than the landscape trestle, and the bottom end of the riser pipe is beveled at 45°.

[0018] Preferably, a grouted stone layer is provided below the riser pipe, and the grouted stone layer is laid in the riverbed.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] A rain discharge port for a landscape hydrophilic river provided by the present utility model, on the one hand, by arranging a riser pipe, rainwater can be directly diverted under the landscape trestle or the clear water platform to protect the riverbed of the discharge port and avoid the impact of traditional rain discharge ports on the landscape hydrophilic facilities. On the other hand, adding a protective cover outside the riser pipe can prevent the riser pipe from being washed and deformed and damaged by the river water flow. Moreover, setting the protective cover into an arc structure can weaken the impact of the water flow on the protective cover, ensure its safety and stability, and at the same time, the appearance design can be further carried out on the protective cover and integrated into the construction of the entire ecological river. In this way, the design of the riser pipe will not affect the pedestrians' sightseeing in the river, on the landscape trestle and the landscape walkway. The implementation difficulty is significantly reduced, the project investment is not increased, regular maintenance by personnel is not required, and the applicable range is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic side view structure diagram of a rain discharge port for a landscape hydrophilic river provided by an embodiment of the present utility model;

[0022] Figure 2A schematic diagram of a top view structure of a rainwater outlet for a landscape hydrophilic river provided in an embodiment of the utility model;

[0023] Figure 3 for Figure 2 Schematic diagram of the cross section at AA in the middle;

[0024] Figure 4 A schematic diagram of a top view structure of a protective cover for a rainwater outlet of a landscape hydrophilic river provided in an embodiment of the utility model;

[0025] Figure 5 A schematic diagram of the front view structure of a protective cover for a rainwater outlet of a landscape hydrophilic river provided in an embodiment of the utility model;

[0026] Figure 6 A side structural schematic diagram of a rainwater discharge outlet for a landscape hydrophilic river channel provided in an embodiment of the utility model.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Water inlet pipe; 2. Water outlet pipe; 3. Rainwater inspection well; 4. Retaining wall; 5. Waterproof casing; 6. Protective cover; 7. Tee; 8. Pipe clamp; 9. Expansion bolt; 10. Riser; 11. Landscape trestle; 12. Mortared stone layer; 13. Water-friendly trail; 14. Riverbed. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below in conjunction with specific embodiments so that those skilled in the art can understand the present invention more clearly.

[0030] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.

[0031] like Figure 1-5 As shown, this embodiment provides a landscape hydrophilic river rainwater outlet, including an inlet pipe 1, three outlet pipes 2, a rainwater inspection well 3 arranged on the inner side of a retaining wall 4, and a riser 10 arranged on the outer side of the retaining wall 4;

[0032] The rainwater inspection well 3 is connected to the water inlet pipe 1, the outer end of the water outlet pipe 2 is connected to the vertical pipe 10 through the tee 7, and the inner end of the water outlet pipe 2 extends to the inner side of the retaining wall 4 and is connected to the rainwater inspection well 3;

[0033] The top and bottom ends of the riser 10 are open, and a protective cover 6 is provided on the outer side of the riser 10 . The protective cover 6 is an arc-shaped structure, and the top and bottom ends of the protective cover 6 are open. The riser 10 and the protective cover 6 are both fixed on the side wall of the retaining wall 4 .

[0034] The landscape hydrophilic river rainwater outlet provided in this embodiment, on the one hand, the water inlet pipe 1 is connected with the upstream rainwater pipe, so that the upstream rainwater can pass through the rainwater inspection well 3, the water outlet pipe 2, and the riser 10 in sequence, and then directly flow into the landscape pier or the lower part of the clean water platform, avoiding the impact of traditional rainwater outlets on landscape hydrophilic facilities. At the same time, the riverbed of the outlet can be protected to avoid the scouring of the riverbed by water flow.

[0035] For example, if Figure 1 As shown, the bottom end of the riser 10 extends into the side ditch flow channel of the hydrophilic walkway 13. In this way, the riser 10 can directly drain rainwater into the side ditch flow channel of the hydrophilic walkway 13, thereby preventing rainwater from impacting the hydrophilic walkway 13 and preventing rainwater from affecting pedestrians.

[0036] For example, if Figure 6 As shown, the bottom end of the riser 10 is lower than the landscape trestle 11, and the bottom end of the riser 10 is beveled at 45°. In this way, the riser 10 can drain rainwater directly to the bottom of the landscape trestle 11, avoiding the impact of the traditional rainwater outlet on the landscape trestle 11, and the beveled structure can ensure the smooth flow of water. A mortar masonry layer 12 is provided under the riser 10, and the mortar masonry layer 12 is laid in the riverbed 14. The mortar masonry layer 12 can protect the riverbed 14 from the impact of the falling rainwater in the riser 10, and the mortar masonry layer 12 is not less than the plane size of the protective cover 6, for example, it can be set according to 1.5mx0.8m.

[0037] On the other hand, the protective cover 6 can protect the standpipe 10 from deformation and damage caused by scouring of the river flow, and at the same time, the appearance design can be performed on the protective cover 6 to be integrated into the entire ecological river construction, so that the design of the standpipe 10 will not affect pedestrians' sightseeing in the river, on the landscape trestle, and on the landscape trail. Moreover, the implementation difficulty is significantly reduced, the project investment is not increased, and frequent maintenance by personnel is not required, and the application range is wide.

[0038] In this embodiment, the rain inspection well 3 is mainly used to receive and transfer the water coming from the upstream rainwater pipe, and can also be used for the later operation and maintenance of the outlet pipe 2 and the riser pipe 10. The size of the well chamber of the rain inspection well 3 should be determined according to the pipe diameter and quantity of the inlet and outlet pipes. The outlet pipe 2 and the riser pipe 10 can adopt steel pipes with specifications of d325×8, 377x9, d426x9, 480x9, d530x9, and are mainly equivalently replaced according to the equal cross-sectional area method based on the size of the inlet pipe 1. The protective cover 6 can be a steel protective cover, such as a stainless steel protective cover, etc.

[0039] In this embodiment, as Figure 3 shown, the three outlet pipes 2 can be arranged in a "pin" shape, effectively ensuring the strength of the well chamber structure.

[0040] In this embodiment, an outlet is provided on the side wall of the rain inspection well 3. The inner end of the outlet pipe 2 is communicated with the outlet. A waterproof sleeve 5 is sleeved at the outlet. The waterproof sleeve 5 is sleeved on the outside of the inner end of the outlet pipe 2, which can prevent rainwater from seeping along the joint gap, causing soil erosion and affecting the structural safety.

[0041] In this embodiment, a cover plate is provided at the top opening of the rain inspection well 3. The cover plate is flush with the road surface, and the cover plate can prevent sundries from entering the rain inspection well 3.

[0042] In this embodiment, the riser pipe 10 can be fixed on the side wall of the retaining wall 4 through pipe clamps 8. The protective cover 6 can be fixed on the side wall of the retaining wall 4 through expansion bolts 9. This facilitates quick installation and disassembly.

[0043] In this embodiment, the bottom end of the protective cover 6 is flush with the bottom end of the riser pipe 10, and the top end of the protective cover 6 is higher than the top end of the riser pipe 10. In this way, the protective cover 6 can protect the entire riser pipe 10. The top opening of the protective cover 6 can be a circular structure.

[0044] In summary, for the rainwater outlet of the landscape hydrophilic river channel provided in this embodiment, the design steps can be divided into three parts, namely well chamber design, outlet pipe design, and protection device design.

[0045] 1. Outlet pipe design

[0046] For the pipe diameter D1 of the outlet pipe 2, steel pipes with specifications of d325×8, 377x9, d426x9, 480x9, d530x9 are adopted, and the number is n. It is mainly equivalently replaced according to the equal cross-sectional area method based on the size of the inlet pipe 1. The diameter D2 of the inlet pipe 1 is calculated and confirmed according to the drainage specification.

[0047] Then, according to the equal area method, the effective cross-sectional area of the outlet pipe 2 is not less than that of the inlet pipe 1:

[0048]

[0049] The water inlet pipe 1 can be normally connected with reference to the drainage inspection well atlas. The layout of the water outlet pipe 2 can be arranged in a "pin" shape according to the pipe diameter and quantity of the water outlet pipe 2. The horizontal clear distance between pipes should be not less than 10 cm to reserve space for fixing the pipe clamp. The vertical clear distance should also be guaranteed to be not less than 10 cm vertically, so that the water outlet pipes form a "pin" shape with vertical dislocation connection to ensure the strength of the well chamber structure.

[0050] The water outlet pipe 2 is connected to the riser 10 by a tee 7. The other end of the tee 7 opens upward and is used as a vent pipe to ensure smooth drainage in the pipe. To ensure the safety and stability of the water outlet pipe, the fixed interval of the pipe clamp can be determined according to the weight, length of the steel pipe, and the impact of the river water flow. It is recommended that the interval does not exceed 0.5 m.

[0051] A steel waterproof sleeve 5 is used at the connection between the water outlet pipe 2 and the rain inspection well 3 to prevent rainwater from seeping along the joint gap, causing soil erosion and affecting the structural safety.

[0052] The bottom of the riser 10 of the water outlet pipe of the landscape trestle is cut obliquely at 45° to ensure a stable flow pattern of the water flow; the bottom of the riser 10 of the water outlet of the landscape hydrophilic walkway is connected to the small gutter of the side ditch to avoid affecting the pedestrian passage.

[0053] For the river with a landscape trestle, the principles for setting the heights of the inlet and outlet pipes are as follows:

[0054] (1) The inner bottom elevation of the water inlet pipe 1 is not lower than the inner bottom elevation of the upper water outlet pipe 2:

[0055] h2≥h3

[0056] (2) The clear distance between the lower water outlet pipe 2 and the upper water outlet pipe 2 should be not less than 10 cm:

[0057] h4≤h3-D1-0.1m

[0058] (3) The bottom water outlet of the riser 10 should be about 0.5 m higher than the riverbed and about 0.3 m lower than the normal water level, so as to dissipate the water energy of the outlet to a certain extent and weaken the scouring of the riverbed.

[0059] h7=h6-0.3m, h7≥h8+0.5m

[0060] h2—the inner bottom elevation of the water inlet pipe 1;

[0061] h3—the inner bottom elevation of the upper water outlet pipe 2;

[0062] h4—the inner bottom elevation of the lower water outlet pipe 2;

[0063] h6—normal water level of the river;

[0064] h7—elevation of outlet pipe of riser 10;

[0065] h8—Riverbed elevation.

[0066] 2. Well chamber design

[0067] The rainwater inspection well 3 is mainly used to receive and transfer water from the upstream rainwater pipe, and is also used for the later operation and maintenance of the outlet pipe 2 and the riser 10. The size of the well chamber should be determined according to the diameter and quantity of the inlet and outlet pipes 2 and the bottom elevation of the pipe.

[0068] The specific determination method is as follows:

[0069] (1) The inner diameter length A of the inspection well is determined according to the diameter and number of the outlet pipes 2, the horizontal clearance between the pipes and the distance from the side wall. The horizontal clearance between the pipes shall not be less than 0.1m, and the clearance between the outlet pipes on both sides and the side wall shall not be less than 0.2m:

[0070] A=nD1+0.1(n-1)+0.4

[0071] (2) The inner diameter width B of the inspection well shall be appropriately selected according to the inner diameter length A and the drainage inspection well atlas;

[0072] (3) The height of the inspection well H is determined according to the ground elevation of the inspection well and the bottom elevation of the bottom outlet pipe:

[0073] H=h1-h4

[0074] n—Number of outlet pipes

[0075] D1—outlet pipe diameter

[0076] h1—ground elevation of the inspection well location

[0077] h4—Inner bottom elevation of the bottom outlet pipe

[0078] 3. Protection device design

[0079] The protection device of the whole system includes a protective cover 6 outside the outlet pipe and a mortar stone layer 12 at the bottom of the riser 10, which is mainly used to protect the riser 10 from being deformed and damaged by river water scouring, and at the same time protect the riverbed at the outlet to avoid scouring of the riverbed by water flow.

[0080] The protective cover 6 is made of stainless steel, and its size is determined according to the following principles:

[0081] (1) The length B is determined based on the diameter and number of the outlet pipes and the clearance between the two sides: the horizontal clearance between the pipes is not less than 0.1m, and the clearance between the outlet pipes and the side walls is not less than 0.1m:

[0082] B = nD1 + 0.1(n - 1) + 0.2

[0083] (2) The width L is determined according to the diameter of the outlet pipe and the clear distance on both sides: the clear distance between the outlet pipes on both sides and the side wall is not less than 0.1 m:

[0084] L = D1 + 0.2

[0085] (3) The height H is determined by the height difference between the upper and lower parts. The height of the top should be 0.2 m higher than the top of the tee of the outlet pipe 7, and the lower part is at the same elevation as the bottom of the riser 10, so that the vertical height of the protective cover can be calculated.

[0086] A circular ventilation hole with a height of 0.2 m is provided in the upper part of the steel protective cover 6.

[0087] The steel protective cover 6 is set as an arc structure to weaken the impact of the water flow on the protective cover 6 and ensure its safety and stability.

[0088] The wall thickness of the steel protective cover 6 can be set to 2 mm - 5 mm;

[0089] The steel protective cover 6 is installed and fixed by expansion bolts 9, and the effective anchoring length is not less than 150 mm.

[0090] The size of the rubble masonry layer 12 at the bottom of the riverbed can be the same as the plane size of the steel protective cover 6.

[0091] Based on the above design method, the specific implementation is as follows:

[0092] Taking a certain urban landscape river as the basis, vertical retaining walls are adopted on both sides of the river. The elevation of the road surface at the top of the riverbank is 53.42 m, the elevation of the riverbed is 45.06 m, the normal water level is 1.04 m, there is a landscape trestle in the river, the elevation of the trestle bridge deck is 49.54 m, and the newly built rainwater pipe in the riverbank community uses HDPE pipe with a diameter of DN500 and the elevation of the bottom of the pipe is 51.41 m.

[0093] According to the basic conditions, because the river is relatively deep and the trestle is located by the river, it is impossible to construct according to the traditional rainwater outlet. Therefore, the outlet pipe is set according to this scheme, and the diameter of the outlet pipe is a steel pipe of d325x8.

[0094] (1) Installation of the outlet pipe

[0095] According to the principle of equal cross-sectional area of flow, 3 steel pipes of d325x8 are required. The three steel pipes are arranged in a "pin" shape. The elevation of the bottom of the inner pipe of the upper outlet pipe is the same as that of the inlet pipe, which is 51.41 m. The clear distance between the outlet pipes is 10 cm, then the elevation of the bottom of the inner pipe of the lower outlet pipe is 51.01 m. The outlet of the outlet riser is set 0.4 m below the normal water level and 0.64 m above the riverbed, so the elevation of the bottom of the outlet riser is 45.70 m.

[0096] (2) Well chamber design

[0097] The net distance between the two sides of the well chamber outlet pipe and the side wall is set at 0.3m, its length A is 1.7m, width B is set at 1.1m, and the depth is 2.32m.

[0098] (3) Protection cover setting

[0099] The net distance between the protective cover and the water outlet riser is set at 10cm, so the size of the protective cover is BxL=1.3x0.5m, the upper part is 20cm higher than the top of the tee, the elevation is 51.76m, and the bottom elevation is the same as the bottom of the water outlet riser at 45.70m, so the vertical length of the protective cover is 6.06m.

[0100] The mortar masonry of the riverbed at the outlet shall not be smaller than the plane size of the protective cover and shall be set at 1.5mx0.8m.

[0101] The mechanisms, components and parts not specifically described in the present invention are all existing structures in the prior art and can be directly purchased from the market.

[0102] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0103] The above is only a preferred embodiment of the utility model, and is not intended to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rainwater outlet for a landscape hydrophilic river, characterized in that: It includes an inlet pipe (1), an outlet pipe (2), a rain inspection well (3) arranged inside the retaining wall (4), and a riser pipe (10) arranged outside the retaining wall (4); The rain inspection well (3) is communicated with the inlet pipe (1), the outer end of the outlet pipe (2) is communicated with the riser pipe (10), and the inner end of the outlet pipe (2) extends to the inside of the retaining wall (4) and is communicated with the rain inspection well (3); The top and bottom of the riser pipe (10) are open, a protective cover (6) is sleeved outside the riser pipe (10), the protective cover (6) is of an arc-shaped structure, the top and bottom of the protective cover (6) are open, and the riser pipe (10) and the protective cover (6) are both fixed on the side wall of the retaining wall (4).

2. A landscape hydrophilic river rainwater outlet according to claim 1, characterized in that: The discharge outlet includes three of the outlet pipes (2), and the three outlet pipes (2) are arranged in a "pin" shape.

3. A landscape hydrophilic river rainwater outlet according to claim 1, characterized in that: An outlet is formed on the side wall of the rain inspection well (3), the inner end of the outlet pipe (2) is communicated with the outlet, and a waterproof sleeve (5) is sleeved at the outlet.

4. A landscape hydrophilic river rainwater outlet according to claim 1, characterized in that: A cover plate is provided at the open top of the rain inspection well (3), and the cover plate is flush with the road surface.

5. The landscape hydrophilic river rainwater outlet according to claim 1, characterized in that: The riser pipe (10) is fixed on the side wall of the retaining wall (4) through a pipe clamp (8).

6. The landscape hydrophilic river rainwater outlet according to claim 1, characterized in that: The protective cover (6) is fixed on the side wall of the retaining wall (4) through an expansion bolt (9).

7. The landscape hydrophilic river rainwater outlet according to claim 1, characterized in that: The bottom end of the protective cover (6) is flush with the bottom end of the riser pipe (10), and the top end of the protective cover (6) is higher than the top end of the riser pipe (10).

8. The landscape hydrophilic river rainwater outlet according to claim 1, characterized in that: The bottom end of the riser pipe (10) extends into the gutter flow channel of the hydrophilic footpath (13).

9. The landscape hydrophilic river rainwater outlet according to claim 1, characterized in that: The bottom end of the riser pipe (10) is lower than the landscape trestle (11), and the bottom end of the riser pipe (10) is cut obliquely at 45°.

10. A landscape hydrophilic river rainwater outlet according to claim 9, characterized in that: A grouted stone layer (12) is provided below the riser pipe (10), and the grouted stone layer (12) is laid in the riverbed (14).

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