Vertical shaft type spillway sightseeing maintenance channel

Abstract

A vertical shaft type spillway sightseeing and overhauling channel comprises a spillway, a plurality of flow separation piers are arranged on the periphery of the top of the spillway at intervals in a surrounding mode, and an annular channel used as a sightseeing and overhauling channel is arranged above the flow separation piers; overhauling steps are poured on the side walls of the sides, facing the spillway, of part of the flow separation piers 2, a plurality of overhauling steps are poured in the height direction of the flow separation piers at intervals, and the side walls of the spillway, the overhauling steps and the flow separation piers are integrally constructed and formed. The maintenance convenience of the spillway vertical shaft section can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water conservancy construction, and particularly relates to a vertical shaft type spillway sightseeing and maintenance channel. Background Art

[0002] In water conservancy and hydropower projects, shaft spillways are increasingly used in pumped-storage power stations because they can reduce large-scale slope excavation and energy dissipation within the shaft can effectively improve the flow pattern of water downstream of the dam.

[0003] At present, in most domestic projects, vertical shaft spillways often do not have maintenance passages. How to inspect and maintain the vertical shaft section of the spillway has become an issue that operation and maintenance personnel need to focus on. Utility Model Content

[0004] The utility model provides a vertical shaft type spillway sightseeing and maintenance passage to solve the problem of inconvenient maintenance of the vertical shaft section of the spillway.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A vertical shaft spillway sightseeing and maintenance passage comprises a spillway, a plurality of flow-isolating piers are arranged around the top of the spillway at intervals, and an annular passage serving as a sightseeing and maintenance passage is arranged above the flow-isolating piers;

[0007] A maintenance step is cast on the side wall of some of the flow-isolating piers facing the spillway. A plurality of the maintenance steps are cast at intervals along the height direction of the flow-isolating piers. The spillway, maintenance steps and the flow-isolating piers are integrally constructed and formed.

[0008] Furthermore, the vertical cross-section of the maintenance step is trapezoidal, and the cross-section of the maintenance step gradually increases towards the direction approaching the annular channel.

[0009] Furthermore, the horizontal extension direction of the flow-isolating pier is consistent with the radial direction of the spillway, and the thickness of the flow-isolating pier gradually becomes thinner in the direction away from the spillway.

[0010] Furthermore, an inner ring edge of the annular channel is provided with an annular first guardrail, and an outer ring edge of the annular channel is provided with a second guardrail.

[0011] Furthermore, a traffic bridge is cast between the annular channel and the surrounding road surface, and the second guardrail is disconnected at the traffic bridge.

[0012] Furthermore, the width of the annular channel is smaller than the length of the flow isolation pier when viewed from above, and the annular channel is arranged in the middle area of the flow isolation pier.

[0013] Furthermore, the maintenance steps include a steel frame and a concrete layer cast outside the steel frame, and the steel frame is welded and fixed to the steel bars in the flow isolation pier.

[0014] Furthermore, the side wall of the spillway is provided with an inspection road, the inspection road is located directly below the inspection step, and anchor rods are provided in the inspection road, and the anchor rods are driven into the stratum of the side wall of the spillway.

[0015] The utility model can achieve the following beneficial effects:

[0016] 1. This application provides an annular channel for the inspection and sightseeing of the shaft spillway. The casting of the flow-isolating piers allows for the stable support of the annular channel without affecting the normal use of the shaft spillway. By casting an inspection step on the side wall of the flow-isolating pier 2, workers can more safely reach the spillway and inspect it.

[0017] 2. The maintenance steps are set to a variable cross-section form and are cast from concrete. At the same time, a steel skeleton is set inside to make the maintenance steps more resistant to water erosion. Since the outer layer is concrete, the maintenance steps have better corrosion resistance and erosion resistance.

[0018] 3. Setting up an inspection road makes it easier for workers to enter the spillway for inspection. Setting up anchor rods in the inspection road can enhance the stability of the inspection road, making it less likely to be damaged by water erosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a top view of a vertical shaft spillway sightseeing and maintenance passage of the utility model;

[0021] Figure 2 The utility model is a vertical cross-sectional schematic diagram of a vertical shaft spillway sightseeing and maintenance channel.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Spillway; 2. Isolation pier; 3. Annular passage; 4. Maintenance steps; 5. First guardrail; 6. Second guardrail; 7. Traffic bridge; 8. Maintenance road; 81. Anchor rod. DETAILED DESCRIPTION

[0024] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0025] like Figure 1 and Figure 2 As shown, a vertical shaft spillway sightseeing and maintenance passage includes a vertical shaft spillway 1. Multiple flow-blocking piers 2 are arranged around the top of the spillway 1. The flow-blocking piers 2 are cast together with the spillway 1. In this application, the spillway 1 has a circular cross-section. When viewed from above, each flow-blocking pier 2 is elongated and extends in the same radial direction as the spillway 1. The horizontal thickness of the flow-blocking piers 2 gradually decreases away from the spillway 1, thereby reducing the impact force of water on the flow-blocking piers 2. After the water impacts the flow-blocking piers 2, it flows along the sidewalls of the flow-blocking piers 2 and into the spillway 1.

[0026] An annular channel 3, serving as a sightseeing and maintenance passage, is cast above the flow-isolating piers 2. In this embodiment, the channel 3 is 1.5 meters wide and 0.5 meters thick. When viewed from above, the channel 3 is shorter than the length of the flow-isolating piers 2 and overlaps the center of multiple flow-isolating piers 2. A first annular guardrail 5 is installed along the inner edge of the channel 3, and a second guardrail 6 is installed along the outer edge of the channel 3, providing protection for sightseeing and maintenance personnel.

[0027] In addition, a traffic bridge 7 is cast between the annular channel 3 and the surrounding road surface. In the embodiment of the present application, the traffic bridge 7 is 3m wide and 0.5m thick. The annular channel 3 and the surrounding ground are connected through the traffic bridge 7, and the second guardrail 6 is disconnected at the traffic bridge 7.

[0028] A maintenance step 4 is cast on the side wall of part of the flow-isolating pier 2 facing the spillway 1. In the embodiment of the present application, the maintenance step 4 is set on only one flow-isolating pier 2. The maintenance steps 4 are arranged at intervals along the height direction of the flow-isolating pier 2, and two adjacent maintenance steps 4 are staggered in the horizontal direction to facilitate the staff to go down along the maintenance steps 4 to reach the spillway 1.

[0029] The vertical cross-section of the flow-isolating pier 2 is trapezoidal, and the cross-section of the access step 4 gradually increases toward the annular channel 3, forming a variable-cross-section flow-isolating pier 2. This variable-cross-section structure not only ensures the load-bearing capacity of the flow-isolating pier 2, but also increases the connection area between the access step 4 and the flow-isolating pier 2, thereby strengthening the connection between the access step 4 and the flow-isolating pier 2 and increasing the scour resistance of the flow-isolating pier 2.

[0030] In addition, each flow isolation pier 2 includes a steel frame and a concrete layer outside the steel frame. The steel frame is welded and fixed to the steel cage inside the flow isolation pier 2. The bearing capacity of the flow isolation pier 2 is enhanced by providing the steel frame. By pouring the concrete layer outside the steel frame, the waterproofing of the flow isolation pier 2 and the corrosion resistance of the steel frame inside the flow isolation pier 2 are achieved. In the embodiment of the present application, the concrete layer of the flow isolation pier 2 is poured with waterproof concrete.

[0031] An inspection road 8 is cast on the side wall of the spillway 1 directly below the inspection step 4. The inspection road 8 is arranged along the height of the spillway 1 and extends to the bottom of the spillway 1. The inspection road 8 is a rod-shaped structure extending out of the side wall of the spillway 1. An anchor rod 81 is provided in each inspection road 8. The anchor rod 81 is driven into the soil layer around the spillway 1 to ensure the strength of the inspection road 8.

[0032] When carrying out maintenance, the staff can reach the annular channel 3 from the traffic bridge 7, tie the safety rope to the first guardrail 5 or the second guardrail 6, and move along the maintenance ladder 4 to the top of the spillway 1. If the side wall of the spillway 1 needs to be inspected, they can continue to move along the maintenance road 8 into the spillway 1. In this application, the maintenance ladder 4 and the maintenance road 8 are both concrete structures, which can withstand the erosion of water for a long time and are not easily damaged or corroded.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vertical shaft spillway sightseeing and maintenance passage, characterized by: It comprises a spillway (1), wherein a plurality of flow-isolating piers (2) are arranged around the top of the spillway (1) at intervals, and an annular channel (3) used as a sightseeing and maintenance channel is arranged above the flow-isolating piers (2); A maintenance step (4) is cast on the side wall of a portion of the flow-isolating pier (2) facing the spillway (1), and a plurality of the maintenance steps (4) are cast at intervals along the height direction of the flow-isolating pier (2). The spillway (1), the maintenance step (4) and the flow-isolating pier (2) are integrally constructed and formed.

2. The vertical shaft spillway sightseeing and maintenance passage according to claim 1, characterized in that: The vertical section of the maintenance step (4) is trapezoidal, and the cross section of the maintenance step (4) gradually increases in a direction approaching the annular channel (3).

3. The vertical shaft spillway sightseeing and maintenance passage according to claim 1, characterized in that: The horizontal extension direction of the flow-isolating pier (2) is consistent with the radial direction of the spillway (1), and the thickness of the flow-isolating pier (2) gradually becomes thinner in a direction away from the spillway (1).

4. The vertical shaft spillway sightseeing and maintenance passage according to claim 1, characterized in that: An inner ring edge of the annular channel (3) is provided with an annular first guardrail (5), and an outer ring edge of the annular channel (3) is provided with a second guardrail (6).

5. The vertical shaft spillway sightseeing and maintenance passage according to claim 4, characterized in that: A traffic bridge (7) is cast between the annular channel (3) and the surrounding road surface, and the second guardrail (6) is disconnected at the traffic bridge (7).

6. The vertical shaft spillway sightseeing and maintenance passage according to claim 1, characterized in that: The width of the annular channel (3) is smaller than the length of the flow isolation pier (2) when viewed from above, and the annular channel (3) is arranged in the middle area of the flow isolation pier (2).

7. The vertical shaft spillway sightseeing and maintenance passage according to claim 1, characterized in that: The maintenance ladder (4) comprises a steel frame and a concrete layer cast outside the steel frame, and the steel frame is welded and fixed to the steel bars in the flow isolation pier (2).

8. The vertical shaft spillway sightseeing and maintenance passage according to claim 1, characterized in that: The side wall of the spillway (1) is also provided with an inspection road (8), the inspection road (8) is located directly below the inspection ladder (4), and an anchor rod (81) is provided in the inspection road (8), and the anchor rod (81) is driven into the stratum of the side wall of the spillway (1).

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