Cross-channel relay type drainage structure
By using a cross-ditch relay drainage structure, water-blocking units and unpressurized drainage tunnels, the problems of difficult construction of structures and soil erosion within drainage ditches are solved, achieving low-cost and efficient drainage and flood control effects.
Patent Information
- Application Number
- CN202520489658.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-03-19
AI Technical Summary
When existing technologies are used to arrange buildings in drainage ditches, the drainage tunnels are long and difficult to construct, the engineering investment is high, and there is a risk of soil erosion.
The system adopts a cross-ditch relay drainage structure, which includes a first water-blocking unit, a second water-blocking unit, a pressureless drainage tunnel, and a drainage ditch. By setting up permeable dams and concrete gravity dams in the drainage ditch, combined with the pressureless drainage tunnel and flood discharge channel, the system realizes the cross-ditch diversion and flood discharge of water flow.
It reduced construction difficulty and project investment, while protecting the environment, reducing the risk of soil erosion, and meeting drainage requirements and flood control standards.
Smart Images
Figure CN223880284U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of water conservancy and hydropower engineering ditch drainage, specifically relates to a cross ditch relay type drainage structure. BACKGROUND
[0002] In recent years, pumped storage power stations are promoted and implemented on a large scale, and reservoirs involved in major water conservancy projects of water-saving supply are under construction, and some abandoned slag fields and construction sites set by engineering construction will be arranged in drainage ditches. In the prior art, when the abandoned slag field, construction site and other buildings are arranged in the drainage ditch, the treatment measures taken are: a drainage hole is built outside the building occupying the position of the drainage ditch, the water inlet of the drainage hole is communicated with the position of the drainage ditch on the upstream side of the building, and the water outlet of the drainage hole is communicated with the position of the drainage ditch on the downstream side of the building, so as to ensure the drainage of the upstream water of the drainage ditch. However, with the increasing size of the buildings occupying the drainage ditch, the drainage hole to be built is very long, which has problems of great design and construction difficulty and great engineering investment. SUMMARY
[0003] In view of the defects in the prior art, the utility model provides a cross ditch relay type drainage structure, which can effectively solve the above problems.
[0004] The technical scheme adopted by the utility model is as follows:
[0005] The utility model provides a cross ditch relay type drainage structure, which comprises a first water blocking unit, a second water blocking unit, a non-pressure drainage hole (3), a drainage ditch (6) and a discharge ditch (7).
[0006] The first water blocking unit is arranged in the drainage ditch (6) and located at the upstream position of the occupied position; the discharge ditch (7) adjacent to the drainage ditch (6) is determined, and a drainage port with a lower terrain than the first water blocking unit is determined in the discharge ditch (7); the non-pressure drainage hole (3) is arranged between the first water blocking unit and the drainage port of the discharge ditch (7); the second water blocking unit is arranged in the discharge ditch (7) and located downstream of the drainage port.
[0007] Preferably, the discharge ditch (7) is a natural ditch; and the discharge ditch (7) has a drainage port communicated with a non-erosion and non-silt zone.
[0008] Preferably, the first water blocking unit comprises a water-blocking dam (1) and a first water dam (2); and the water-blocking dam (1) and the first water dam (2) are arranged in sequence along the water flow direction of the drainage ditch (6).
[0009] Preferably, the barrier water permeable dam (1) is a comb-shaped gabion barrier water permeable dam; and the primary water retaining dam (2) is a concrete gravity dam.
[0010] Preferably, the water inlet of the non-pressure drainage hole (3) is located between the barrier water permeable dam (1) and the primary water retaining dam (2).
[0011] Preferably, the second barrier water retaining unit comprises a secondary water retaining dam (4) and a flood discharge channel (5).
[0012] The secondary water retaining dam (4) is located downstream of the diversion port; the flood discharge channel (5) is arranged downstream of the secondary water retaining dam (4) and in the discharge channel (7); and the overflow gap of the secondary water retaining dam (4) is in communication with the flood discharge channel (5).
[0013] Preferably, the secondary water retaining dam (4) is a concrete gravity dam.
[0014] Preferably, the flood discharge channel (5) is a rectangular water section reinforced concrete flood discharge channel, and the end point of the flood discharge channel (5) is located in the non-erosion and non-silt zone downstream of the discharge channel (7).
[0015] Preferably, the non-pressure drainage hole (3) is provided with a reinforced concrete spillway and a reinforced concrete stilling basin at the position of the diversion port of the discharge channel (7).
[0016] Preferably, the non-pressure drainage hole (3) is a reinforced concrete lining non-pressure drainage hole.
[0017] The cross-channel relay type drainage structure provided by the present application has the following advantages:
[0018] The cross-channel relay type drainage structure provided by the present application has the following advantages: BRIEF DESCRIPTION OF DRAWINGS
[0019] Fig. 1 is a plane schematic view of the cross-channel relay type drainage structure of the present application;
[0020] Fig. 2 is a plane layout schematic view of the barrier water permeable dam, the primary water retaining dam and the water inlet of the non-pressure drainage hole in the present application;
[0021] Fig. 3It is the plane arrangement schematic view of the no-pressure drainage hole outlet, the two-stage water retaining dam and the flood discharge channel in the utility model.
[0022] In the figure: 1---the water retaining dam; 2---the first-stage water retaining dam; 3---the no-pressure drainage hole; 4---the second-stage water retaining dam; 5---the flood discharge channel; 6---the drainage channel; 7---the discharge channel.
[0023] The direction indicated by the arrow is the water flow direction of the drainage channel and the discharge channel. DETAILED DESCRIPTION
[0024] In order to make the technical problems, technical schemes and beneficial effects solved by the utility model more clearly and clearly, the utility model is further described in detail below by combining with the drawings and examples.It should be understood that the specific examples described herein are only used to explain the utility model and not used to limit the utility model.
[0025] The utility model provides a kind of across channel relay type drainage structure, by adopting water retaining, drainage measure relay arrangement, solve the needs of the drainage channel for protecting downstream building and crossing channel flood discharge of upstream water, while solve the problem that flood flow exceeds the original channel flood discharge flow when the discharge channel corresponds to flood control standard.The utility model structure construction is simple, and cost is low, while protecting the environment, reduce the risk of soil erosion.It can be widely applied in across channel drainage engineering.
[0026] Referring to Figs. 1-3 The utility model provides a kind of across channel relay type drainage structure, including first water retaining dam unit, second water retaining dam unit, no-pressure drainage hole 3, drainage channel 6 and discharge channel 7;
[0027] The first water retaining dam unit is arranged in the upstream position of the occupied position in the drainage channel 6;The discharge channel 7 adjacent to the drainage channel 6 is determined, and the drainage port lower than the first water retaining dam unit is determined in the discharge channel 7;The no-pressure drainage hole 3 is arranged between the first water retaining dam unit and the drainage port of the discharge channel 7;The second water retaining dam unit is arranged in the discharge channel 7, and the second water retaining dam unit is located in the downstream of the drainage port.
[0028] In the utility model, when a certain position in the drainage channel 6 is occupied by a large number of buildings such as spoil ground and construction site, according to the topographic features of mountain, an adjacent discharge channel 7 is selected outside the drainage channel 6, the discharge channel 7 is a natural channel, and the discharge channel 7 has a drainage port connected with the non-erosion and non-silt zone, for example, the drainage port of the discharge channel 7 is directly connected with the river collection point around the mountain.
[0029] Since the discharge channel 7 and the drainage channel 6 are adjacent, only one unpressurized drainage hole 3 needs to be built, the water inlet end of the unpressurized drainage hole 3 is communicated with the upstream position of the drainage channel 6, and the water outlet end of the unpressurized drainage hole 3 is communicated with the discharge channel 7, so that the upstream water of the drainage channel 6 can be introduced to the discharge channel 7 through the unpressurized drainage hole 3, and the construction is simple and convenient.
[0030] Further, the first water blocking unit is arranged at the upstream position of the drainage channel 6, and the structure of the first water blocking unit is designed, so that the upstream water of the drainage channel 6 can be effectively introduced into the unpressurized drainage hole 3.
[0031] Since the discharge channel 7 is introduced into water, in order to avoid the problem of water and soil loss caused by the impact of the introduced water on the discharge channel 7, the outlet position structure of the unpressurized drainage hole 3 is designed, and the second water blocking unit is arranged in the discharge channel 7.
[0032] The structures will be described in detail as follows:
[0033] The first water blocking unit comprises a blocking water permeable dam 1 and a first water retaining dam 2; the blocking water permeable dam 1 and the first water retaining dam 2 are arranged in sequence along the water flow direction of the drainage channel 6, and the blocking water permeable dam 1 is located upstream of the first water retaining dam 2.
[0034] The blocking water permeable dam 1 is a comb-shaped gabion blocking water permeable dam or other structural type; the blocking water permeable dam 1 is used for blocking large-volume flood floating objects upstream to avoid entering the unpressurized drainage hole 3 to block the drainage channel.
[0035] The first water retaining dam 2 is a concrete gravity dam or other structural type, which is arranged in the drainage channel 6 and downstream of the blocking water permeable dam 1. There needs to be enough space between the first water retaining dam 2 and the blocking water permeable dam 1, so as to leave enough arrangement space for the inlet of the unpressurized drainage hole 3.
[0036] The design water retaining standard of the first water retaining dam 2 is the flood volume upstream of the first water retaining dam 2 in the drainage channel 6 under the design standard.
[0037] The second water blocking unit comprises a second water retaining dam 4 and a flood discharge channel 5; the second water retaining dam 4 is located downstream of the drainage port; the flood discharge channel 5 is arranged in the discharge channel 7 downstream of the second water retaining dam 4; and the overflow gap of the second water retaining dam 4 is communicated with the flood discharge channel 5.
[0038] The secondary water retaining dam 4 is a concrete gravity dam or other structural type, and the overflow gap is arranged at a suitable position and elevation of the dam body and downstream of the stilling basin of the non-pressure drainage hole 3 arranged in the discharge channel 7.
[0039] The design water retaining standard of the secondary water retaining dam 4 is the sum of the upstream flood volume of the primary water retaining dam 2 in the drainage channel 6 and the upstream flood volume of the secondary water retaining dam 4 in the discharge channel 7 under the design standard.
[0040] The discharge channel 5 is a reinforced concrete discharge channel with a rectangular water section, or other water section type and other structural type, which corresponds to the shape and structure type of the overflow gap of the secondary water retaining dam 4, is arranged in the discharge channel 7, and the inlet is connected to the overflow gap of the secondary water retaining dam 4.
[0041] The water inlet of the non-pressure drainage hole 3 is located between the retaining water permeable dam 1 and the primary water retaining dam 2.
[0042] Therefore, the non-pressure drainage hole 3 is a reinforced concrete lining non-pressure drainage hole, which functions to drain the upstream water in the drainage channel 6 into the adjacent discharge channel 7, and the inlet of the non-pressure drainage hole 3 is arranged between the retaining water permeable dam 1 and the primary water retaining dam 2 of the drainage channel 6, and the outlet is provided with a reinforced concrete spillway and a reinforced concrete stilling basin.
[0043] The design drainage standard of the non-pressure drainage hole 3 is the upstream flood volume of the primary water retaining dam 2 in the drainage channel 6 under the design standard.
[0044] The cross-channel relay type drainage structure of the utility model adopts relay arrangement type of water retaining and drainage measures, is arranged in order, meets the needs of the drainage channel for draining the upstream water to protect the downstream building, solves the problem that the flood flow exceeds the original channel flood discharge flow when the discharge channel corresponds to the flood control standard, the utility model structure construction is simple, the cost is low, the environment is protected, and the risk of water and soil loss is reduced.
[0045] The following will be further described by taking a large-scale pumped storage power station project adopting the technical scheme of the utility model as an example in combination with the drawings.
[0046] As shown in FIG. 1, the drainage structure of the utility model comprises a retaining water permeable dam 1, a primary water retaining dam 2, a secondary water retaining dam 4, a discharge channel 7, a non-pressure drainage hole 3 and a discharge channel 5.Fig. 1 As shown, in a large pumped storage power station project, the upstream water cannot be discharged downstream along the drainage ditch 6 due to the presence of construction sites and other structures downstream. Therefore, an adjacent discharge ditch is selected for drainage. The cross-ditch relay drainage structure of this utility model includes a permeable dam 1, a primary dam 2, a pressureless drainage tunnel 3, a secondary dam 4, and a flood discharge channel 5. The permeable dam 1 and the primary dam 2 are sequentially arranged upstream of the drainage ditch 6. The pressureless drainage tunnel 3 connects the upstream of the primary dam 2 of the drainage ditch 6 to the discharge ditch 7. The secondary dam 4 is located downstream of the stilling basin of the pressureless drainage tunnel 3 in the discharge ditch 7. The flood discharge channel 5 connects to the overflow gap of the secondary dam 4 and discharges water downstream of the discharge ditch 7 to a non-scouring and non-silting area.
[0047] like Fig. 2 As shown, a permeable dam 1 is installed at a suitable location in drainage channel 6, upstream of the inlet of the unpressurized drainage tunnel 3. Its arrangement is designed to block floating debris, and the gap must be designed to allow for the passage of design floodwaters. The inlet of the unpressurized drainage tunnel 3 is designed with a favorable flow pattern. The inlet bottom elevation is determined based on the topography, and the backwater height at the design flood level is calculated based on the designed cross-sectional width, serving as the basis for determining the height of the inlet section of the unpressurized drainage tunnel 3. A primary retaining dam 2 is installed downstream of the inlet of the unpressurized drainage tunnel 3. This dam is a concrete gravity dam, and its crest elevation is determined by a combination of the backwater height at the inlet of the unpressurized drainage tunnel 3 and the corresponding height increase of the concrete gravity dam. The shape and layout of the primary retaining dam 2 must meet the stability requirements of the concrete gravity dam, including its resistance to sliding and overturning.
[0048] like Fig. 3 As shown, within the discharge channel 7, the outlet position and bottom elevation of the pressureless drainage tunnel 3 are determined. Based on the inlet position and bottom elevation of the pressureless drainage tunnel 3, the hydraulic gradient of the tunnel section of the pressureless drainage tunnel 3 is determined and corresponding hydraulic calculations are performed. The cross-sectional dimensions of the water passage of the tunnel section of the pressureless drainage tunnel 3 are optimized, and the outlet chute and stilling basin of the pressureless drainage tunnel 3 are designed.
[0049] The secondary dam 4 is located downstream of the outlet of the unpressurized drainage tunnel 3. The secondary dam 4 is a concrete gravity dam, designed with a water-retaining standard equal to the sum of the upstream flood volume of the primary dam 2 within the drainage channel 6 and the upstream flood volume of the secondary dam 4 within the drainage channel 7. Based on this and the corresponding increase in height of the concrete gravity dam, the crest elevation of the secondary dam 4 is comprehensively determined. The shape and layout of the secondary dam 4 must meet the stability requirements of the concrete gravity dam, including resistance to sliding and overturning.
[0050] The flood drainage channel 5 is a reinforced concrete flood drainage channel with a rectangular water passing section, arranged in the drainage channel 7, the inlet is connected with the overflow gap of the secondary water retaining dam 4, the water passing section size is designed according to the design standard flood volume, channel plane, longitudinal section arrangement and the like, the terminal point to the downstream of the drainage channel 7 satisfies the non-erosion and non-silt zone, generally the ditch mouth or the position near the normal water level elevation of the downstream main channel.
[0051] The utility model discloses adopt through this kind of across channel, water retaining, drainage structure's relay arrangement, effectively solved the drainage channel unable along the original channel drainage's requirement, the compact arrangement of various water retaining, drainage facilities structure on both sides of the inlet and outlet of the non-pressure drainage hole, reduced the construction difficulty of retaining, drainage structure, saved the project investment, greatly protected the construction site arranged on the downstream side of channel, satisfies the relevant requirements of water and soil conservation.
[0052] The above is only the preferred embodiment of the utility model, it should be pointed out, for ordinary skilled person in the art, without departing from the principle of the utility model, can also make a number of improvements and refinements, these improvements and refinements also should be regarded as the protection scope of the utility model.
Claims
1. A cross-channel relay drainage structure, characterized by, The first water blocking unit, the second water blocking unit, the non-pressure drainage hole (3), the drainage channel (6) and the discharge channel (7) are included. The first water blocking unit is arranged in the drainage channel (6) and at an upstream position of the occupied position; the discharge channel (7) adjacent to the drainage channel (6) is determined, and a drainage port lower than the first water blocking unit is determined in the discharge channel (7); the non-pressure drainage hole (3) is arranged between the first water blocking unit and the drainage port of the discharge channel (7); and the second water blocking unit is arranged in the discharge channel (7) and at a downstream position of the drainage port.
2. The cross-channel relay drainage structure according to claim 1, wherein, The discharge channel (7) is a natural channel; and the discharge channel (7) has a drainage port communicating with a non-erosion and non-deposition zone.
3. The cross-channel relay drainage structure according to claim 1, wherein The first water blocking unit includes a water blocking dam (1) and a primary water blocking dam (2); and the water blocking dam (1) and the primary water blocking dam (2) are arranged in sequence along the water flow direction of the drainage channel (6).
4. The cross-channel relay drainage structure according to claim 3, wherein The water blocking dam (1) is a comb-shaped gabion water blocking dam; and the primary water blocking dam (2) is a concrete gravity dam.
5. The cross-channel relay drainage structure according to claim 3, wherein The water inlet of the non-pressure drainage hole (3) is located between the water blocking dam (1) and the primary water blocking dam (2).
6. The cross-channel relay drainage structure according to claim 1, wherein The second water blocking unit includes a secondary water blocking dam (4) and a flood discharge channel (5). The secondary water blocking dam (4) is located at the downstream position of the drainage port; the flood discharge channel (5) is arranged at the downstream position of the secondary water blocking dam (4) and in the discharge channel (7); and the overflow gap of the secondary water blocking dam (4) communicates with the flood discharge channel (5).
7. The cross-channel relay drainage structure according to claim 6, wherein The secondary water blocking dam (4) is a concrete gravity dam.
8. The cross-channel relay drainage structure according to claim 6, wherein The flood discharge channel (5) is a rectangular cross-section reinforced concrete flood discharge channel, and the terminal point of the flood discharge channel (5) is located at the downstream non-erosion and non-deposition zone of the discharge channel (7).
9. The cross-channel relay drainage structure according to claim 1, wherein The non-pressure drainage hole (3) is provided with a reinforced concrete spillway and a reinforced concrete stilling basin at the drainage port position of the discharge channel (7).
10. The cross-channel relay drainage structure of claim 1, wherein, The non-pressure drainage hole (3) is a reinforced concrete lining non-pressure drainage hole.