Sewage reservoir overflow structure

Abstract

The utility model provides a sewage reservoir overflow structure which comprises an upstream sewage collecting pipe, an overflow pool, a reservoir inlet pipe, an overflow port and a spillway, the sewage collecting pipe is arranged in the upstream water incoming direction, and the tail end of the sewage collecting pipe is connected with the overflow pool; the overflow pool is arranged on a dam abutment foundation of the sewage reservoir, upwards receives sewage in an upstream area, and is downwards butted with the reservoir inlet pipe and the overflow port; the storage pipe is communicated with the sewage storage, and the bottom elevation of the storage pipe is lower than that of the overflow port and the sewage collecting pipe; the tail end of the overflow port is connected with a downstream spillway, and the bottom elevation of the overflow port is higher than that of the storage pipe; the spillway is connected with the external environment. The overflow structure of the sewage reservoir not only can prevent over-standard flood from entering the sewage reservoir, but also can reduce the risk that high-concentration sewage in the reservoir overflows, and can reduce the storage amount of silt.

Description

Technical Field

[0001] The utility model relates to the technical field of spillways, in particular to an overflow structure of a sewage reservoir. Background Art

[0002] With the mining of mines, unnatural piles such as spoil dumps and tailings dumps are inevitably formed. The current mineral processing technology and mineral processing concept are still at the stage of single mineral processing, and natural ore veins are mostly composite veins of metal elements and non-metallic elements. Only extracting a single element means that other elements can only enter the spoil dump or tailings dump. Under natural rainfall conditions, pollutants in the spoil dump or tailings dump will leach into the water to form sewage, which will enter the downstream sewage reservoir. Over time, the sewage in the sewage reservoir will accumulate pollutants, resulting in an increase in the concentration of pollutants in the sewage in the reservoir. In recent years, with the increasing frequency of extreme weather, the probability of rainfall exceeding flood control standards has also increased. The general operation mode of the current sewage reservoir is that the upstream sewage directly enters the reservoir through the sewage collection ditch. When rainfall exceeding flood control standards occurs, the sewage containing high concentrations of pollutants in the sewage reservoir is discharged through the spillway, causing pollution to the downstream environment. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide an overflow structure for reducing the discharge of high-concentration sewage in the reservoir, so as to solve the shortcomings of the existing technology, so that super-standard floods will not enter the sewage reservoir, thereby reducing the risk of sewage overflow in the reservoir, and also reducing the amount of sediment entering the reservoir.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A sewage reservoir overflow structure comprises an upstream sewage collecting pipe, an overflow tank, an inlet pipe, an overflow port and a spillway, wherein the sewage collecting pipe is arranged in the upstream water direction, and the end of the sewage collecting pipe is connected to the overflow tank; the overflow tank is arranged on the dam shoulder foundation of the sewage reservoir, the overflow tank receives the sewage in the upstream area upward, and the overflow tank connects to the reservoir pipe and the overflow port downward; the inlet pipe is connected to the sewage reservoir, and the bottom elevation of the inlet pipe is lower than the overflow port and the sewage collecting pipe; the end of the overflow port is connected to the downstream spillway, and the bottom elevation of the overflow port is higher than the inlet pipe; the spillway is connected to the external environment.

[0006] A further solution is that the upstream sewage collection pipe includes a HDPE pipe or a reinforced concrete ditch.

[0007] A further solution is that the overflow pool is cast with a reinforced concrete layer, a concrete pad is arranged at the bottom of the reinforced concrete layer, and the surrounding area of ​​the reinforced concrete layer is backfilled with a backfill soil layer.

[0008] A further solution is that the inlet pipe can be a reinforced concrete culvert or a HDPE pipe or a cast-in-place box culvert, and the installation bottom elevation of the inlet pipe should be 0.5m~1.0m higher than the bottom wall of the overflow tank.

[0009] A further solution is that the overflow port is located on the downstream side wall of the overflow tank, the bottom elevation of the overflow port is greater than the top elevation of the inlet pipe, and the overflow capacity of the overflow port is greater than the flow capacity of the upstream sewage collection pipe.

[0010] A further solution is that the spillway is made of reinforced concrete, the upstream of the spillway is connected to the overflow port, and the downstream is connected to the natural external environment, and the flow capacity of the spillway is not lower than the flow capacity of the overflow port.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model sets up an overflow pool to transfer upstream sewage. When a flood comes, if the sewage reservoir cannot continue to store sewage, the upstream flood is directly discharged to the downstream of the reservoir. Compared with the discharge to the downstream after entering the reservoir, the impact of pollutants on the downstream is reduced. The utility model can not only prevent super-standard floods from entering the sewage reservoir, but also reduce the risk of sewage overflow in the reservoir, and reduce the amount of sediment entering the reservoir. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 A schematic diagram of a planar structure of a sewage reservoir overflow structure provided by an embodiment of the utility model;

[0014] Figure 2 For this utility model Figure 1 AA cross-sectional structure diagram;

[0015] Figure 3 For the utility model Figure 1 Schematic diagram of the cross-sectional structure of the middle BB;

[0016] Figure 4 For the utility model Figure 1 Schematic diagram of the CC cross-section structure.

[0017] Figure numerals: 1-upstream sewage collection pipe, 2-overflow tank, 3-inlet pipe, 4-overflow port, 5-spillway, 6-backfill soil layer, 7-concrete cushion layer, 8-reinforced concrete layer. DETAILED DESCRIPTION

[0018] In order to make the technical solution and advantages of the utility model clearer, the following is further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. For ordinary technicians in the technical field to which the utility model belongs, all other embodiments made without departing from the concept of the utility model belong to the scope of protection of the utility model.

[0019] This embodiment provides a sewage reservoir overflow structure, which can be used for sewage inflow and flood overflow. Figure 1~Figure 4 As shown, it is set on the solid foundation of the sewage reservoir dam shoulder, including upstream sewage collection pipe 1, overflow pool 2, inlet pipe 3, overflow port 4, spillway 5, backfill soil layer 6, concrete cushion layer 7 and reinforced concrete layer 8. The sewage collection pipe 1 is set in the upstream water direction, and the end is connected to the overflow pool 2; the overflow pool 2 is set on the solid foundation of the sewage reservoir dam shoulder, the overflow pool 2 receives the sewage from the upstream area upward, and connects to the storage pipe 3 and the overflow port 4 downward; the inlet pipe 3 is connected to the sewage reservoir, and the inlet pipe 3 is set to have a bottom elevation lower than the overflow port 4 and the sewage collection pipe 1; the end of the overflow port 4 is connected to the downstream spillway 5, and the bottom elevation of the overflow port 4 is higher than the top elevation of the inlet pipe 3; the spillway 5 is connected to the external environment.

[0020] In this embodiment, the upstream sewage collection pipe 1 can be a HDPE pipe, a reinforced concrete trench or other sewage collection facilities, and the cross-sectional dimensions are determined according to the catchment area of ​​the upstream sewage area and the flood control standards.

[0021] In this embodiment, the overflow pool 2 is cast with a reinforced concrete layer 8, a concrete cushion layer 7 is arranged at the bottom of the reinforced concrete layer 8, the pool body size and wall thickness are determined according to the amount of water and sand carried, and the reinforced concrete layer 8 is backfilled with a backfill soil layer 6 around it.

[0022] In this embodiment, the inlet pipe 3 can be a reinforced concrete culvert, a HDPE pipe or a cast-in-place box culvert. Its cross-sectional size and flow capacity are determined according to the flood control standard of the sewage reservoir and the upstream catchment area. The installation bottom elevation of the inlet pipe 3 should be 0.5m~1.0m higher than the bottom wall of the overflow tank.

[0023] In this embodiment, the overflow port 4 is located on the downstream side wall of the overflow tank 2, the bottom elevation of the overflow port 4 should be greater than the top elevation of the inlet pipe 3, and the overflow capacity of the overflow port 4 should be greater than the overflow capacity of the upstream sewage collection pipe 1. The spillway 5 is made of a reinforced concrete layer 8, connected to the overflow port 4 upstream and connected to the natural external environment downstream, and the overflow capacity should not be lower than the overflow capacity of the overflow port 4.

[0024] It should be noted that when the sewage reservoir of the prior art uses a spillway, when a flood comes, the sewage in the sewage reservoir will flow down. Generally speaking, the water in the sewage reservoir, under the action of evaporation and precipitation, will have a higher concentration of pollutants than the upstream water; therefore, when a flood comes, the sewage reservoir of this embodiment can no longer store sewage, and the upstream flood is directly discharged to the downstream of the reservoir, which will reduce the impact of pollutants on the downstream compared to discharging it to the downstream after entering the reservoir. In addition, due to the arrival of the flood, the amount of water from the upstream increases, and the concentration of pollutants carried by the upstream water will also decrease.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0026] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A sewage reservoir overflow structure, characterized in that: The invention comprises an upstream sewage collection pipe (1), an overflow tank (2), an inlet pipe (3), an overflow outlet (4) and a spillway (5), wherein the sewage collection pipe (1) is arranged in the upstream water direction, and the end of the sewage collection pipe (1) is connected to the overflow tank (2); the overflow tank (2) is arranged on the foundation of the sewage reservoir dam shoulder, the overflow tank (2) receives sewage from the upstream area upward, and the overflow tank (2) is connected to the inlet pipe (3) and the overflow outlet (4) downward; the inlet pipe (3) is connected to the sewage reservoir, and the bottom elevation of the inlet pipe (3) is lower than the overflow outlet (4) and the sewage collection pipe (1); the end of the overflow outlet (4) is connected to the downstream spillway (5), and the bottom elevation of the overflow outlet (4) is higher than the inlet pipe (3); the spillway (5) is connected to the external environment.

2. A sewage reservoir overflow structure according to claim 1, characterized in that: The upstream sewage collection pipe (1) comprises a HDPE pipe or a reinforced concrete trench.

3. A sewage reservoir overflow structure according to claim 1, characterized in that: The overflow pool (2) is cast by a reinforced concrete layer (8), a concrete pad (7) is arranged at the bottom of the reinforced concrete layer (8), and the periphery of the reinforced concrete layer (8) is backfilled with a backfill soil layer (6).

4. A sewage reservoir overflow structure according to claim 1, characterized in that: The inlet pipe (3) may be a reinforced concrete culvert, a HDPE pipe or a cast-in-place box culvert. The installation bottom elevation of the inlet pipe (3) should be 0.5m to 1.0m higher than the bottom wall of the overflow tank (2).

5. A sewage reservoir overflow structure according to claim 1, characterized in that: The overflow port (4) is located on the downstream side wall of the overflow tank (2), the bottom elevation of the overflow port (4) is greater than the top elevation of the inlet pipe (3), and the flow capacity of the overflow port (4) is greater than the flow capacity of the upstream sewage collection pipe (1).

6. A sewage reservoir overflow structure according to claim 1, characterized in that: The spillway (5) is made of reinforced concrete. The upstream of the spillway (5) is connected to the overflow port, and the downstream is connected to the natural external environment. The flow capacity of the spillway (5) is not less than the flow capacity of the overflow port (4).

Images