Concrete gravity dam structure in river channel

Abstract

The utility model provides a concrete gravity dam structure in a river channel. The concrete gravity dam structure comprises a water retaining dam section, a water diversion and power generation dam section, a bottom hole flood discharge dam section and a surface hole flood discharge dam section. A plurality of water retaining dam sections are arranged, each water retaining dam section is of a gravity dam structure, and all the water retaining dam sections are arranged at the two ends and the middle area of the whole dam body and serve as a foundation dam section structure of the whole dam body; the at least one water diversion and power generation dam section is arranged between the two water retaining dam sections; the at least one bottom hole flood discharge dam section is arranged in a deep water area of the whole dam body; the number of the surface hole flood discharge dam sections is larger than that of the bottom hole flood discharge dam sections, and the surface hole flood discharge dam sections are arranged in a deep water area of the whole dam body. And the dam sections are matched, combined and connected to form a complete dam body. The concrete gravity dam structure in the river channel has the advantages of being high in dam body integration degree and high in structural stability.

Description

Technical Field

[0001] The utility model relates to the technical field of river channel water conservancy facility construction, in particular to a concrete gravity dam structure in a river channel. Background Art

[0002] At present, the concrete gravity dams in relevant rivers in China mainly use the dam body to retain water, and then build a special flood discharge tunnel inside the dam shoulder mountain to discharge the dam flood. At the same time, a water diversion and power generation tunnel is built inside the dam shoulder mountain on the other side to divert water to the downstream plant for power generation. This gravity dam structure system not only involves the construction of the river water retaining dam, but also involves the construction of the flood discharge tunnel and the water diversion and power generation tunnel, which is difficult to construct and expensive.

[0003] Existing literature materials such as application numbers CN201420230672.7_Layout structure of gravity dam plus riverbed-type plant, CN201420849284.7_A dam inlet structure and CN202311005636.0_Roller-compacted concrete gravity dam for water transmission, power generation and overflow discharge of plant top for roller compacted concrete gravity dam disclose the use of different methods to solve the problems of difficult construction and high cost by configuring different functional modules.

[0004] This application solves the problem of integrating the dam's multiple functions from the perspective of the dam's own structural composition, and ensures the structural stability and safety of the dam. Utility Model Content

[0005] The utility model aims to address the deficiencies of the prior art and thus provide a river channel concrete gravity dam structure with high dam body integration and high structural stability.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a concrete gravity dam structure in a river channel, including a water retaining dam section, a water diversion and power generation dam section, a bottom hole spillway dam section and a surface hole spillway dam section;

[0007] There are several water retaining dam sections, all of which are gravity dam structures. Each of the water retaining dam sections is arranged at both ends and the middle area of ​​the entire dam body, serving as the basic dam section structure of the entire dam body;

[0008] The number of the water diversion power generation dam section is at least one, and it is arranged between the two water retaining dam sections;

[0009] The number of the bottom hole spillway section is at least one, which is arranged in the deep water area of ​​the entire dam body;

[0010] The number of the surface spillway dam sections is greater than that of the bottom spillway dam sections, and the surface spillway dam sections are arranged in the deep water area of ​​the entire dam body;

[0011] The various dam sections are combined and connected to form a complete dam body.

[0012] Preferably, the water diversion power generation dam section includes a power generation dam body and a power generation water intake tower, a trash rack door assembly, a water diversion gate assembly, a water diversion flow channel gradient section, a water diversion pressure steel pipe and a steel pipe anchor pier arranged based on the power generation dam body;

[0013] A water inlet is arranged below the power generation water inlet tower, the trash rack door assembly is installed at the water inlet, a water diversion pipeline is arranged at the rear side of the water inlet, and the water diversion gate assembly is arranged at the front section of the water diversion pipeline;

[0014] The water diversion pipeline is provided with a water diversion flow channel gradient section and a water diversion pressure steel pipe in sequence behind the water diversion working gate, and a steel pipe anchor pier is provided above the water diversion pressure steel pipe.

[0015] Preferably, the trash rack door assembly comprises a water diversion trash rack and a trash rack door groove, and the water diversion trash rack is installed at the water diversion port through the trash rack door groove.

[0016] Preferably, the water diversion gate assembly includes a hoist platform, a water diversion gate hoist, a water diversion working gate slot and a water diversion working gate;

[0017] The water diversion working gate is intercepted in the front half of the water diversion pipeline, and the water diversion gate opening and closing machine, the water diversion grid gate opening and closing machine platform and the water diversion working gate groove are used to cooperate in opening and closing the water diversion working gate.

[0018] Preferably, the bottom hole flood discharge dam section is provided with a flood discharge water inlet hole, a bottom hole inspection gate assembly, a bottom hole opening and closing gate assembly, a bottom hole flow nose sill and a bottom hole outlet guide wall;

[0019] The number of the flood discharge water inlet hole is at least one and is arranged in the lower area of ​​the bottom hole flood discharge dam section;

[0020] The bottom hole inspection gate assembly is arranged at the front half of the flood discharge water inlet hole, and is used to intercept the flood discharge water inlet hole during inspection;

[0021] The bottom opening and closing gate assembly is arranged at the rear half of the flood discharge water inlet hole, and is used to intercept the flood discharge water inlet hole;

[0022] The bottom hole flow-diverting nose is arranged at the tail end of the flood discharge inlet hole, and is used to divert the water flow into the air;

[0023] The bottom hole outlet guide wall is arranged on both sides of the tail end of the flood discharge water inlet hole to form a water flow guide structure.

[0024] Preferably, the bottom hole inspection gate assembly includes a bottom hole inspection gate well and a bottom hole inspection gate, the bottom hole opening and closing gate assembly includes a bottom hole working gate well and a bottom hole working gate, and the bottom hole spillway section is also provided with a bottom hole gate opening and closing machine and an air hole gate opening and closing machine platform for driving the movement of the bottom hole inspection gate and the bottom hole working gate.

[0025] Preferably, the surface orifice spillway section includes a surface orifice spillway, a surface orifice inspection gate assembly, a surface orifice working gate assembly, a surface orifice working bridge, a surface orifice overflow surface, a surface orifice flow nose sill and a surface orifice diversion pier;

[0026] The surface orifice flood discharge outlet of the surface orifice flood discharge dam section is arranged in the upper area, and the surface orifice inspection gate assembly and the surface orifice working gate assembly are arranged in the surface orifice flood discharge outlet and used to close the surface orifice flood discharge outlet;

[0027] The surface hole working bridge is arranged at the top of the surface hole spillway section to form a traffic passage;

[0028] The surface hole overflow surface is arranged at the rear end of the surface hole flood discharge outlet, the surface hole flow nose is arranged at the tail end of the surface hole overflow surface for diverting water flow into the air, and the surface hole diversion pier is arranged on both sides of the tail end of the surface hole overflow surface for guiding water flow.

[0029] Preferably, the surface hole inspection gate assembly includes a surface hole inspection gate and a surface hole inspection gate slot, the surface hole working gate assembly includes a surface hole working gate and a surface hole working gate slot, the surface hole spillway section is provided with a surface hole gate opening and closing machine platform and a surface hole gate opening and closing machine for opening and closing the surface hole working gate, and the surface hole spillway section is provided with a surface hole inspection gate inverted electric hoist for opening and closing the surface hole inspection gate.

[0030] Preferably, a surface hole inspection gate garage is arranged in the outer area of ​​a group of the surface hole spillway sections as a whole.

[0031] Preferably, the number of the water retaining dam sections is six, the number of the water diversion power generation dam sections is one, the number of the bottom hole spillway dam sections is one, and the number of the surface hole spillway dam sections is three;

[0032] The arrangement order from one section to the other is: four sections of water retaining dam sections - water diversion and power generation dam section - one section of water retaining dam section - bottom hole spillway dam section - three sections of surface hole spillway dam section - one section of water retaining dam section.

[0033] The utility model has substantial features and progress compared to the prior art. Specifically, the utility model utilizes multiple dam sections with different functions to be built in the river channel and combined together to form a concrete gravity dam in the river channel. All dam sections are combined together to form a water retaining structure, in which the water diversion and power generation dam section is responsible for directing the water upstream of the dam into the power generation and water diversion pressure steel pipe, and directing the water to the power plant downstream for power generation. The bottom hole spillway dam section is responsible for discharging flood water. When the water upstream of the dam needs to be discharged, the bottom hole gate is opened to discharge the flood. At the same time, the silt deposited in the upstream riverbed can be discharged into the downstream together, reducing the silt deposition in the upstream reservoir area. The surface hole spillway dam section is composed of multiple dam sections. When the upstream flood is large and the bottom hole discharge cannot meet the flood discharge demand, the surface hole spillway dam section gate can be opened. The surface hole spillway dam section has multiple gates for control, and different numbers of gates are opened according to the flood volume to meet the flood discharge demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is one of the overall structural schematic diagrams of the concrete gravity dam structure in the river channel in the utility model.

[0035] Figure 2 This is the second overall structural schematic diagram of the concrete gravity dam structure in the river channel of the utility model.

[0036] Figure 3 It is a structural schematic diagram of the water diversion power generation dam section in the utility model.

[0037] Figure 4 It is a structural schematic diagram of the surface hole spillway section of the utility model.

[0038] In the figure: 1-water retaining dam section, 2-water diversion power generation dam section, 21-power generation water intake tower, 22-trash rack gate slot, 23-water diversion gate hoist platform, 24-water diversion gate hoist, 25-water diversion working gate slot, 26-water diversion trash rack, 27-water diversion working gate, 28-water diversion flow channel gradient section, 29-water diversion pressure steel pipe, 210-steel pipe anchor pier, 3-bottom hole spillway dam section, 31-flood discharge water inlet, 32-bottom hole maintenance gate well, 33-bottom hole working gate well, 34-bottom hole gate hoist platform, 35-bottom hole gate hoist, 36-bottom hole flow nose sill, 37-bottom hole outlet guide wall, 4-surface hole spillway dam section, 41-surface hole gate pier, 42-surface hole maintenance gate slot, 43 -surface hole inspection gate, 44-surface hole working gate slot, 45-surface hole working gate, 46-surface hole gate opening and closing machine platform, 47-surface hole gate opening and closing machine, 48-surface hole inspection gate inverted electric hoist, 49-surface hole working bridge, 410-surface hole overflow surface, 411-surface hole flow nose sill, 412-surface hole diversion pier, 5-surface hole inspection gate door warehouse. DETAILED DESCRIPTION

[0039] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0040] like Figure 1-Figure 4 As shown, a concrete gravity dam structure in a river channel includes a water retaining dam section, a water diversion and power generation dam section, a bottom hole spillway dam section and a surface hole spillway dam section;

[0041] In this embodiment, the number of the water retaining dam sections is six, the number of the water diversion and power generation dam sections is one, the number of the bottom hole spillway dam sections is one, and the number of the surface hole spillway dam sections is three; the water retaining dam sections are all gravity dam structures, and each of the water retaining dam sections is arranged at both ends and the middle area of ​​the entire dam body as the basic dam section structure of the entire dam body; the water diversion and power generation dam section is arranged between two water retaining dam sections; the bottom hole spillway dam section is arranged in the deep water area of ​​the entire dam body; the surface hole spillway dam section is arranged in the deep water area of ​​the entire dam body; and each dam section is matched, combined and connected to form a complete dam body.

[0042] Specifically, the arrangement order from one section to the other is: four sections of water retaining dam sections-water diversion and power generation dam section-one section of water retaining dam section-bottom hole spillway dam section-three sections of surface hole spillway dam section-one section of water retaining dam section.

[0043] Multiple dam sections with different functions are built in the river channel and combined together to form a concrete gravity dam in the river channel. The dam body has better integrity, higher structural stability, higher safety, and is also multifunctional.

[0044] Specifically:

[0045] The water diversion and power generation dam section 2 is provided with a power generation water intake tower 21 , a water diversion flow channel gradient section 28 , a water diversion pressure steel pipe 29 , and a steel pipe anchor pier 210 .

[0046] The power generation water intake tower 21 is provided with a trash rack gate slot 22 , a water diversion gate hoist platform 23 , a water diversion gate hoist 24 , a water diversion working gate slot 25 , a water diversion trash rack 26 , and a water diversion working gate 27 .

[0047] The power generation water intake tower 21 is the main water diversion control device, which introduces water into the water diversion pressure steel pipe 29 buried inside the dam body through the power generation water intake tower 21 and the water diversion flow channel gradient section 28 (square to round structure), and then introduces water into the power plant downstream of the dam through the water diversion pressure steel pipe 29 to generate electricity. In order to maintain the stability of the water diversion pressure steel pipe 29 at the downstream surface of the dam, a steel pipe anchor 210 is set to combine the steel pipe bend section with the dam body to resist the huge impact force caused by the change of water flow here, ensuring that the steel pipe is safely led out of the downstream of the dam. Inside the power generation water intake tower 21, trash rack door slots 22 and water diversion trash racks 26 are arranged upstream, water diversion working gate slots 25 and water diversion working gates 27 are arranged downstream, and a water diversion gate hoist platform 23 is arranged on the top of the power generation water intake tower. A total of 4 water diversion gate hoists 24 are installed on the water diversion gate hoist platform 23. The two upstream water diversion gate hoists 24 are connected to the lower water diversion trash racks through lifting wire ropes. Opening the two upstream water diversion gate hoists 24 can make the water diversion trash racks 26 slide up or down in the trash rack door slots 22. The water diversion trash racks 26 are mainly used to intercept floating objects in the process of diverting water downstream to prevent floating objects from entering the water diversion pressure steel pipe to damage the downstream hydropower generation equipment. The two downstream water diversion gate hoists 24 are connected to the lower water diversion working gate 27 through lifting wire ropes. Opening the two downstream water diversion gate hoists 24 can make the water diversion working gate 27 slide up or down in the water diversion working gate groove 25, and the water delivery for power generation is controlled through the water diversion working gate.

[0048] The bottom hole spillway section 3 is provided with a flood discharge water inlet hole 31, a bottom hole inspection gate well 32, a bottom hole working gate well 33, a bottom hole gate hoist platform 34, a bottom hole gate hoist 35, a bottom hole flow nose sill 36, and a bottom hole outlet guide wall 37.

[0049] Two flood discharge inlet holes 31 are arranged in the bottom hole flood discharge dam section. When the dam discharges through the bottom hole, the flood passes through the dam body through the two flood discharge inlet holes, and is discharged into the river channel downstream of the dam under the guidance of the bottom hole outlet guide wall on the downstream side. Under the diversion effect of the bottom hole diversion nose 36, the water flow is lifted into the air and then falls into the river channel for energy dissipation, so as to reduce the scouring of the riverbed by the flood.

[0050] Two bottom hole inspection gate wells 32 are arranged on the upstream side of the bottom hole spillway section, and a bottom hole gate hoist platform 34 is arranged on the upper part of the bottom hole inspection gate well 32, and four bottom hole gate hoists 35 are arranged on the bottom hole gate hoist platform 34. A bottom hole inspection gate is arranged in each bottom hole inspection gate well 32, and every two bottom hole gate hoists 35 are connected to a bottom hole inspection gate at the lower part through a wire rope. The bottom hole inspection gate can slide up and down in the bottom hole inspection gate well through the lifting of the bottom hole gate hoist 35 to control the water flow.

[0051] A bottom hole service gate well 33 is arranged on the downstream side of the bottom hole inspection gate well 32, and an arc-shaped hydraulic service gate is arranged in the bottom hole service gate well 33. Under normal circumstances, the bottom hole inspection gate on the upstream side is lifted and opened. When flood discharge is required, the arc-shaped hydraulic service gate on the downstream side is opened and lifted for flood discharge. When the service gate fails, the bottom hole inspection gate is lowered and closed to block water before the downstream service gate is inspected.

[0052] The surface spillway dam section 4 is composed of three dam sections in total. The two left dam sections each have two spillways, and the right dam section has only one spillway, and a surface spillway inspection gate 5 is arranged.

[0053] The surface orifice spillway section 4 is provided with a surface orifice overflow surface 410, and the water flows down to the downstream river channel along the overflow surface during flood discharge. A surface orifice gate pier 41 is arranged on the top of the surface orifice overflow surface 410, and a surface orifice maintenance gate slot 42 is arranged on the upstream side of the surface orifice gate pier 41. A surface orifice maintenance gate 43 is arranged in the surface orifice maintenance gate slot 42, and all surface orifice maintenance gate slots 42 share one surface orifice maintenance gate 43. A surface orifice working gate slot 44 is arranged on the downstream side of the surface orifice maintenance gate slot 42, and a surface orifice working gate 45 is arranged in the surface orifice working gate slot 44. Each gate hole is provided with one surface orifice working gate, for a total of 5 gates.

[0054] A surface hole gate hoist platform 46 is arranged on the upper part of the surface hole gate pier 41, and a surface hole gate hoist 47 is arranged on the surface hole gate hoist platform 46. Two surface hole gate hoists are arranged corresponding to one surface hole working gate. The surface hole gate hoist is connected to the surface hole working gate by a steel wire rope.

[0055] Two inverted electric hoists 48 for table hole inspection doors are arranged at the lower edge of the upstream of the table hole gate hoist platform 46, and the inverted electric hoists 48 for table hole inspection doors can move along the special track. The inverted electric hoists 48 for table hole inspection doors are connected with the table hole inspection gate 43 by steel wire ropes.

[0056] A surface hole working bridge 49 is arranged at the top of the downstream side of the surface hole gate pier to connect all the surface hole spillway sections to solve the problem of left and right traffic. Surface hole diversion piers 412 are arranged at both ends of the surface hole overflow surface downstream of the surface hole gate pier 41 to guide the downstream water flow. A surface hole flow nose sill 411 is arranged on the downstream side of the surface hole overflow surface 410 to lift the downstream water flow and dissipate energy.

[0057] Under normal circumstances, the surface hole inspection gate is lifted by the surface hole inspection gate inverted electric hoist and transported and lowered to the surface hole inspection gate door warehouse for storage. All the surface hole working gates are lowered to the bottom of the gate hole by the surface hole gate hoist and closed to block water and store water. When the surface hole flood discharge dam section needs to discharge flood, the surface hole gate hoist lifts the surface hole working gate to discharge water. The number and height of the surface hole working gate lifting are determined according to the flow rate required to be discharged. If a surface hole working gate fails, the surface hole inspection gate is lifted out of the surface hole inspection gate door warehouse by the surface hole inspection gate inverted electric hoist and transported to the gate hole where the failure occurs, and the surface hole inspection gate is lowered to the bottom along the surface hole inspection gate slot in a closed state to block water. The surface hole working gate with the failure can be inspected and repaired only after the surface hole inspection gate is closed.

[0058] Finally, it should be noted that: The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A concrete gravity dam structure in a river channel, characterized in that: It includes the retaining dam section, the water diversion and power generation dam section, the bottom hole spillway dam section and the surface hole spillway dam section; There are several water retaining dam sections, all of which are gravity dam structures. Each of the water retaining dam sections is arranged at both ends and the middle area of ​​the entire dam body, serving as the basic dam section structure of the entire dam body; The number of the water diversion power generation dam section is at least one, and it is arranged between the two water retaining dam sections; The number of the bottom hole spillway section is at least one, which is arranged in the deep water area of ​​the entire dam body; The number of the surface spillway dam sections is greater than that of the bottom spillway dam sections, and the surface spillway dam sections are arranged in the deep water area of ​​the entire dam body; The various dam sections are combined and connected to form a complete dam body.

2. The in-channel concrete gravity dam structure according to claim 1, characterized in that: The water diversion power generation dam section includes a power generation dam body and a power generation water intake tower, a trash rack door assembly, a water diversion gate assembly, a water diversion flow channel gradient section, a water diversion pressure steel pipe and a steel pipe anchor pier arranged on the power generation dam body; A water inlet is arranged below the power generation water inlet tower, the trash rack door assembly is installed at the water inlet, a water diversion pipeline is arranged at the rear side of the water inlet, and the water diversion gate assembly is arranged at the front section of the water diversion pipeline; The water diversion pipeline is provided with a water diversion flow channel gradient section and a water diversion pressure steel pipe in sequence behind the water diversion working gate, and a steel pipe anchor pier is provided above the water diversion pressure steel pipe.

3. The in-channel concrete gravity dam structure according to claim 2, characterized in that: The trash rack door assembly comprises a water diversion trash rack and a trash rack door groove, and the water diversion trash rack is installed at the water diversion port through the trash rack door groove.

4. The in-channel concrete gravity dam structure according to claim 2, characterized in that: The water diversion gate assembly includes a hoist platform, a water diversion gate hoist, a water diversion working gate slot and a water diversion working gate; The water diversion working gate is intercepted in the front half of the water diversion pipeline, and the water diversion gate opening and closing machine, the water diversion grid gate opening and closing machine platform and the water diversion working gate groove are used to cooperate in opening and closing the water diversion working gate.

5. The in-channel concrete gravity dam structure according to any one of claims 2 to 4, characterized in that: The bottom hole flood discharge dam section is provided with a flood discharge water inlet hole, a bottom hole inspection gate assembly, a bottom hole opening and closing gate assembly, a bottom hole flow nose sill and a bottom hole outlet guide wall; The number of the flood discharge water inlet hole is at least one and is arranged in the lower area of ​​the bottom hole flood discharge dam section; The bottom hole inspection gate assembly is arranged at the front half of the flood discharge water inlet hole, and is used to intercept the flood discharge water inlet hole during inspection; The bottom opening and closing gate assembly is arranged at the rear half of the flood discharge water inlet hole, and is used to intercept the flood discharge water inlet hole; The bottom hole flow-diverting nose is arranged at the tail end of the flood discharge inlet hole, and is used to divert the water flow into the air; The bottom hole outlet guide wall is arranged on both sides of the tail end of the flood discharge water inlet hole to form a water flow guide structure.

6. The in-channel concrete gravity dam structure according to claim 5, characterized in that: The bottom hole inspection gate assembly includes a bottom hole inspection gate well and a bottom hole inspection gate, the bottom hole opening and closing gate assembly includes a bottom hole working gate well and a bottom hole working gate, and the bottom hole spillway section is also provided with a bottom hole gate opening and closing machine and an air hole gate opening and closing machine platform for driving the movement of the bottom hole inspection gate and the bottom hole working gate.

7. The in-channel concrete gravity dam structure according to claim 6, characterized in that: The surface hole spillway section includes a surface hole spillway, a surface hole inspection gate assembly, a surface hole working gate assembly, a surface hole working bridge, a surface hole overflow surface, a surface hole flow nose sill and a surface hole diversion pier; The surface orifice flood discharge outlet of the surface orifice flood discharge dam section is arranged in the upper area, and the surface orifice inspection gate assembly and the surface orifice working gate assembly are arranged in the surface orifice flood discharge outlet and used to close the surface orifice flood discharge outlet; The surface hole working bridge is arranged at the top of the surface hole spillway section to form a traffic passage; The surface hole overflow surface is arranged at the rear end of the surface hole flood discharge outlet, the surface hole flow nose is arranged at the tail end of the surface hole overflow surface for diverting water flow into the air, and the surface hole diversion pier is arranged on both sides of the tail end of the surface hole overflow surface for guiding water flow.

8. The in-channel concrete gravity dam structure according to claim 7, characterized in that: The surface hole inspection gate assembly includes a surface hole inspection gate and a surface hole inspection gate slot, the surface hole working gate assembly includes a surface hole working gate and a surface hole working gate slot, the surface hole spillway section is provided with a surface hole gate opening and closing machine platform and a surface hole gate opening and closing machine for opening and closing the surface hole working gate, and the surface hole spillway section is provided with a surface hole inspection gate inverted electric hoist for opening and closing the surface hole inspection gate.

9. The in-channel concrete gravity dam structure according to claim 8, characterized in that: A surface hole inspection gate garage is arranged in the outer area of ​​the entire surface hole spillway section.

10. The in-channel concrete gravity dam structure according to claim 1, characterized in that: The number of the water retaining dam sections is six, the number of the water diversion and power generation dam sections is one, the number of the bottom hole spillway dam sections is one, and the number of the surface hole spillway dam sections is three; The arrangement order from one section to the other is: four sections of water retaining dam sections - water diversion and power generation dam section - one section of water retaining dam section - bottom hole spillway dam section - three sections of surface hole spillway dam section - one section of water retaining dam section.

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