A temporary sealing and drainage structure suitable for diversion tunnels

Abstract

This utility model provides a temporary sealing and drainage structure suitable for diversion tunnels, relating to the field of hydraulic equipment technology. The diversion tunnel has multiple holes spaced apart along its width. The temporary sealing and drainage structure includes multiple first drainage components, each of which is installed in a corresponding hole. Each first drainage component includes a drainage assembly, which includes a first water-receiving plate, a first drainage pipe, a first valve, and a first truss. The first water-receiving plate is vertically arranged and used to block the water flow in the holes. The first truss is fixedly connected to the end face of the first water-receiving plate away from the water flow. The first water-receiving plate has a first through hole, and the first drainage pipe is sealed through the first through hole of the first water-receiving plate. The first valve is provided on the first drainage pipe and used to control the connection or disconnection between the two ends of the first drainage pipe. This utility model can effectively block and discharge the water flow in the diversion tunnel.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy equipment technology, and more specifically, to a temporary sealing and drainage structure suitable for diversion tunnels. Background Technology

[0002] In the construction of diversion tunnels in water conservancy projects, temporary blocking structures are usually installed on the downstream (discharge side) of the diversion tunnel for gate maintenance or subsequent permanent sealing construction. These structures must block upstream water flow during construction and effectively drain gate seepage and accumulated water within the cofferdam to create stable dry working conditions.

[0003] In related technologies, conventional construction often uses earth-rock cofferdams or concrete cofferdams as temporary water-blocking structures. Although these cofferdam structures can achieve the function of blocking water, their construction process is usually time-consuming, affecting the overall project progress. Moreover, their function is relatively simple. The cofferdam can only block external water flow into the work area, but it cannot discharge water flow such as gate seepage and water accumulation inside the cofferdam on its own. Additional pumping and drainage equipment is required, which increases the complexity and cost of construction. Utility Model Content

[0004] The problem solved by this invention is how to effectively block and discharge the water flow in the diversion tunnel.

[0005] To solve the above problems, this utility model provides a temporary sealing and drainage structure suitable for a diversion tunnel. The diversion tunnel is provided with a plurality of holes spaced apart along its width. The temporary sealing and drainage structure includes a plurality of first drainage components, each of which is used to be installed in the corresponding hole. The first drainage component includes a drainage assembly, which includes a first water-receiving plate, a first drain pipe, a first valve, and a first truss. The first water-receiving plate is vertically arranged and is used to block the water flow from the hole. The first truss is fixedly connected to the end face of the first water-receiving plate away from the water flow. The first water-receiving plate has a first through hole. The first drain pipe is sealed through the first through hole of the first water-receiving plate. The first valve is provided on the first drain pipe and is used to control the connection or disconnection between the two ends of the first drain pipe.

[0006] Optionally, the drainage assembly further includes a first back water plate, wherein the end of the first truss away from the first front water plate is fixedly connected to the first back water plate; the first back water plate is vertically arranged and parallel to the first front water plate.

[0007] Optionally, the first truss includes a first support, the first support includes a plurality of first horizontal bars and a plurality of first vertical bars, the plurality of first horizontal bars are spaced apart along the height direction of the hole, the first horizontal bars extend along the width direction of the hole, the plurality of first vertical bars are spaced apart along the width direction of the hole, the first horizontal bars and the first vertical bars are arranged at an angle and fixedly connected to the first water-facing plate.

[0008] Optionally, the first truss further includes a second support, the second support including a plurality of second longitudinal bars and a plurality of second vertical bars, the plurality of second longitudinal bars being spaced apart along the width direction of the hole, the second longitudinal bars extending along the length direction of the hole, and the plurality of second vertical bars being spaced apart along the width direction of the hole; The top end of each of the second vertical rods is connected to the portion between the two ends of the second longitudinal rod, and the bottom end of each of the second vertical rods is used to connect to the bottom of the hole; one end of the second longitudinal rod is connected to the first bracket, and the other end of the second longitudinal rod is connected to the first backwater plate.

[0009] Optionally, the second bracket further includes a first diagonal bar, which is configured to be parallel to the horizontal plane, and the first diagonal bar is set at an angle to the second vertical bar, with both ends of the first diagonal bar connected to the first bracket and the first backwater plate, respectively.

[0010] Optionally, the second bracket further includes a plurality of second diagonal rods, which are spaced apart along the width direction of the hole. The height of the first water-facing plate is higher than the height of the first water-receiving plate, and the two ends of the second diagonal rods are respectively connected to the top of the first bracket and the top of the first water-receiving plate.

[0011] Optionally, the first truss further includes a third support, which includes a third horizontal bar and a plurality of third vertical bars. The third horizontal bar extends along the width direction of the hole, and the plurality of third vertical bars are spaced apart along the width direction of the hole. The third horizontal bar and the third vertical bars are arranged at an angle and are fixedly connected to the first backwater plate.

[0012] Optionally, the drainage assembly includes a plurality of first drainage pipes, which are spaced apart along the width direction of the hole; The first back water plate is provided with a second through hole, and the end of the first drain pipe away from the first front water plate is sealed through the second through hole.

[0013] Optionally, the first drainage component includes multiple drainage assemblies, which are arranged along the length of the hole, and the multiple first drainage pipes corresponding to the multiple drainage assemblies are connected in sequence.

[0014] Optionally, the temporary sealing and drainage structure further includes a second drainage component, which is used to be disposed at the tail end of the plurality of holes; The second drainage component includes a second truss, a second drain pipe, and a second valve. Multiple first backwater plates corresponding to multiple first drainage components are respectively connected to the second truss. The first drain pipe is connected to the second drain pipe. The second valve is disposed on the second drain pipe and is used to control the connection or disconnection between the two ends of the second drain pipe.

[0015] The beneficial effects of this utility model's temporary sealing and drainage structure for diversion tunnels are: Because the diversion tunnel has multiple holes spaced along its width, blockage of a single hole can prevent the entire tunnel from failing to drain properly, thus ensuring the reliability of drainage. By installing a corresponding first-stage drainage component within each hole, a complete water barrier is formed to seal the hole at the appropriate location. This prevents water leakage due to unsealed individual holes, ensuring that upstream water is completely blocked and creating stable dry conditions for the downstream work area.

[0016] The first water-receiving plate, the first drainage pipe, the first valve, and the first truss can be assembled outdoors to form a modular frame-type drainage and water-blocking assembly before being transported to the hole, or they can be directly assembled inside the hole to form a drainage and water-blocking assembly. In short, the modular frame-type first drainage and water-blocking component can be directly installed inside the hole of the diversion tunnel, which simplifies the construction process of the temporary sealing and drainage structure. Compared with the temporary sealing and water-blocking structure formed by traditional cofferdam construction, it greatly reduces the working time and speeds up the overall project progress.

[0017] A gate can be installed inside the hole. The first water-receiving plate of the first drainage assembly can maintain an appropriate distance from the gate to form a cavity behind the gate for collecting water flow such as gate seepage and water accumulation inside the cofferdam. The first truss is fixedly connected to the end face of the first water-receiving plate that is vertically arranged and away from the water flow. The first truss provides rigid support for the first water-receiving plate, ensuring that the drainage assembly remains stable under the pressure of water flowing into the diversion tunnel, such as upstream water. This improves the water-blocking safety and durability of the first water-receiving plate in blocking the water flow in the diversion tunnel. The first drainage pipe is sealed and passes through the first perforation of the first water-receiving plate. A first valve can be installed on the first drainage pipe. When the water flow in the cavity reaches a certain flow rate, the first valve can be opened, allowing the first drainage pipe to quickly discharge the water flow, thus realizing the integrated function of blocking and draining the water flow in the diversion tunnel. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the temporary sealing and drainage structure and the diversion tunnel in an embodiment of this utility model; Figure 2 This is one of the structural schematic diagrams of the water blocking and drainage assembly in the embodiments of this utility model; Figure 3 This is the second structural schematic diagram of the water blocking and drainage assembly in the embodiments of this utility model; Figure 4 This is a schematic diagram of the structure of the first water-receiving plate and the first support in an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the first truss in an embodiment of the present utility model; Figure 6 This is the third schematic diagram of the structure of the water blocking and drainage assembly in the embodiments of this utility model; Figure 7 This is a schematic diagram of the structure of the second drainage component in an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures: 100 - First drainage component; 110 - Drainage assembly; 120 - First water-receiving plate; 130 - First drain pipe; 140 - First truss; 141 - First support; 1411 - First horizontal bar; 1412 - First vertical bar; 142 - Second support; 1421 - Second longitudinal bar; 1422 - Second vertical bar; 1423 - First diagonal bar; 1424 - Second diagonal bar; 143 - Third support; 1431 - Third horizontal bar; 1432 - Third vertical bar; 150 - First backwater plate; 200 - Second drainage component; 210 - Second truss; 220 - Second drain pipe; 300 - Guide hole; 310 - Hole. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0021] In the attached diagram, the X-axis represents left and right positions, with the positive direction of the X-axis representing the right side and the negative direction representing the left side; the Y-axis represents front and back positions, with the positive direction of the Y-axis representing the front and the negative direction representing the back; and the Z-axis represents up and down positions, with the positive direction of the Z-axis representing up and the negative direction representing down. It should be noted that the aforementioned representations of the X, Y, and Z axes are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0022] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0023] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0024] like Figure 1 and Figure 2 As shown in the figure, this utility model provides a temporary sealing and drainage structure suitable for a diversion tunnel. The diversion tunnel 300 is provided with a plurality of holes 310 distributed at intervals along its width. The temporary sealing and drainage structure includes a plurality of first drainage components 100, each of which is used to be installed in the corresponding hole 310. The first drainage component 100 includes a drainage assembly 110, which includes a first water-receiving plate 120, a first drain pipe 130, a first valve, and a first truss 140. The first water-receiving plate 120 is vertically arranged and is used to block the water flow in the hole 310. The first truss 140 is fixedly connected to the end face of the first water-receiving plate 120 away from the water flow. The first water-receiving plate 120 is provided with a first through hole. The first drain pipe 130 is sealed through the first through hole of the first water-receiving plate 120. The first valve is provided on the first drain pipe 130 and is used to control the connection or disconnection between the two ends of the first drain pipe 130.

[0025] Specifically, the orifice 310 can be defined to extend in the front-to-back direction, and a gate can be installed at each orifice 310. The first drainage component 100 can be installed behind the gate, and the two together form a cavity for storing and collecting water flow such as seepage from the gate and water accumulated inside the cofferdam. The length direction and water flow direction of the diversion tunnel 300 (orifice 310) can be aligned with... Figure 1 The Y-axis of the coordinate system is parallel to the direction of the water flow, where the direction of the water flow can be parallel to the direction of the Y-axis. Figure 1 In the coordinate system, the Y-axis is aligned in the opposite direction; the width direction of the guide tunnel 300 can be aligned with... Figure 1 The X-axis of the coordinate system is parallel to the x-axis; the vertical direction can be parallel to the x-axis. Figure 3 The Z-axis is parallel in the coordinate system.

[0026] The top end of the first water-receiving plate 120 can be a straight line; or, the top end of the first water-receiving plate 120 can match the shape of the inner top wall of the hole 310. For example, if the inner top wall of the hole 310 is arched, then the top end of the first water-receiving plate 120 can also be arched.

[0027] The front end of the first water-receiving plate 120 is used to block the water flow. The front end of the first truss 140 and the rear end of the first water-receiving plate 120 can be fixedly connected by bolts or other fasteners. The bottom end of the first truss 140 can be fixedly connected to the inner bottom wall of the hole 310 by anchor rods or other means to prevent the first water-receiving plate 120 from pushing the first truss 140 to move along the length of the hole 310 under the action of the water flow.

[0028] The inner diameter of the first perforation can be slightly larger than that of the first drain pipe 130, so that the first drain pipe 130 can be smoothly inserted into the first perforation of the first water-receiving plate 120.

[0029] In this embodiment, since the diversion tunnel 300 is provided with multiple holes 310 distributed at intervals along its width, it can prevent the entire diversion tunnel 300 from failing to drain properly if a single hole 310 becomes blocked, thus ensuring the drainage reliability of the holes 310 in the diversion tunnel 300. By setting a corresponding first drainage component 100 in each hole 310, the first drainage component 100 can block the hole 310 at the corresponding position, forming a complete water barrier. This prevents water leakage due to a single unblocked hole 310, ensuring that upstream water is completely blocked and creating stable dry conditions for the downstream work area.

[0030] The first water-receiving plate 120, the first drainage pipe 130, the first valve, and the first truss 140 can be assembled outdoors to form a modular frame-type drainage and water-blocking assembly before being transported to the hole 310, or they can be directly assembled in the hole to form a drainage and water-blocking assembly. In short, the modular frame-type first drainage and water-blocking component 100 can be directly installed in the hole 310 of the diversion tunnel 300, which simplifies the construction process of the temporary sealing and drainage structure. Compared with the temporary sealing and water-blocking structure formed by traditional cofferdam construction, it greatly reduces the working time and speeds up the overall project progress.

[0031] A gate can be installed in the hole 310. The first water-receiving plate 120 of the first drainage component 100 can maintain an appropriate distance from the gate so as to form a cavity on the rear side of the gate for collecting water flow such as gate seepage and water accumulation inside the cofferdam. The first truss 140 is fixedly connected to the end face of the first water-receiving plate 120 that is vertically arranged and away from the water flow. The first truss 140 provides rigid support for the first water-receiving plate 120, ensuring that the drainage assembly 110 remains stable under the pressure of upstream water in the diversion tunnel 300. This improves the water-blocking safety and durability of the first water-receiving plate 120 in blocking the water flow in the diversion tunnel 300. The first drainage pipe 130 is sealed and passes through the first perforation of the first water-receiving plate 120. A first valve can be installed on the first drainage pipe 130. When the water flow in the cavity reaches a certain flow rate, the first valve can be opened, allowing the first drainage pipe 130 to quickly discharge the water flow. This achieves the integrated function of blocking and draining the water flow in the diversion tunnel 300. For example, while blocking upstream water in the diversion tunnel 300, it can actively discharge water seepage from the gate and water accumulated in the cofferdam, autonomously forming dry working conditions and solving the problem of the single function of traditional cofferdams.

[0032] Furthermore, the first drainage component 100 can also serve as a template for the permanent plug concrete pouring, avoiding template fabrication, reducing the amount of work, and saving on project investment.

[0033] Optionally, combined Figure 2 and Figure 3 As shown, the drainage assembly 110 also includes a first back water plate 150, and the end of the first truss 140 away from the first water-facing plate 120 is fixedly connected to the first back water plate 150; the first back water plate 150 is arranged vertically and is parallel to the first water-facing plate 120.

[0034] Specifically, the first back water plate 150 can be set on the side of the first water-facing plate 120 away from the water flow. The front end and rear end of the first truss 140 along the length direction of the hole 310 can be fixedly connected to the first water-facing plate 120 and the first back water plate 150 by bolt fasteners or welding, etc. Therefore, the first back water plate 150 and the first water-facing plate 120 are opposite to each other and spaced apart.

[0035] In this optional embodiment, the first backwater plate 150 and the first frontwater plate 120 are arranged in parallel opposite directions and are rigidly connected by the first truss 140, together forming a nearly closed box-type or frame-type force-bearing unit. After the upstream water pressure of the diversion tunnel is transmitted to the first truss 140 through the first frontwater plate 120, part of the force flow can be directly shared by the first backwater plate 150 and transmitted to the downstream side tunnel wall or foundation, forming a shorter and more uniform bidirectional force transmission path. This not only significantly reduces the stress concentration of the first truss 140 and the connecting nodes, but also the box-type or frame-type force-bearing unit can effectively resist loads from all directions (such as upstream water pressure impact, accidental loads during installation or maintenance), preventing the first drainage assembly 100 from overturning or becoming unstable, and correspondingly improving the stress stability of the drainage assembly 110.

[0036] Optionally, combined Figure 4 As shown, the first truss 140 includes a first support 141, which includes a plurality of first horizontal bars 1411 and a plurality of first vertical bars 1412. The plurality of first horizontal bars 1411 are spaced apart along the height direction of the hole 310, and the first horizontal bars 1411 extend along the width direction of the hole 310. The plurality of first vertical bars 1412 are spaced apart along the width direction of the hole 310. The first horizontal bars 1411 and the first vertical bars 1412 are arranged at an angle and are fixedly connected to the first water-facing plate 120.

[0037] Specifically, the height direction of hole 310 can be aligned with... Figure 4 The Z-axis direction is parallel in the coordinate system; the width direction of hole 310 can be parallel to... Figure 2 The X-axis is parallel in the coordinate system.

[0038] Both the first horizontal bar 1411 and the first vertical bar 1412 can be made of channel steel. The first horizontal bar 1411 and the first vertical bar 1412 are set at an angle, for example, perpendicularly. At least one of the first horizontal bar 1411 and the first vertical bar 1412 can be fixedly connected to the first water-facing plate 120 by bolts, fasteners, or welding.

[0039] In this optional embodiment, a plurality of first horizontal bars 1411 spaced apart along the height direction of the hole 310 are arranged at an angle to a plurality of first vertical bars 1412 spaced apart along the width direction of the hole 310, and are fixedly connected to the first water-receiving plate 120, so as to form a dense and regular grid-like first support 141 on the surface of the first water-receiving plate 120 away from the water flow. This is equivalent to increasing the overall stiffness and bending resistance of the first water-receiving plate 120 along the width and height directions of the hole 310, and correspondingly reducing the probability of the first water-receiving plate 120 deforming under high-pressure water flow, so as to ensure the reliability of the water-blocking seal.

[0040] Optionally, combined Figure 5 and Figure 6 As shown, the first truss 140 further includes a second support 142, which includes a plurality of second longitudinal bars 1421 and a plurality of second vertical bars 1422. The plurality of second longitudinal bars 1421 are spaced apart along the width direction of the hole 310, and the second longitudinal bars 1421 extend along the length direction of the hole 310. The plurality of second vertical bars 1422 are spaced apart along the width direction of the hole 310. The top end of each of the second vertical rods 1422 is connected to the portion between the two ends of the second longitudinal rod 1421, and the bottom end of each of the second vertical rods 1422 is used to connect to the bottom of the hole 310; one end of the second longitudinal rod 1421 is connected to the first bracket 141, and the other end of the second longitudinal rod 1421 is connected to the first backwater plate 150.

[0041] Specifically, the length direction of the hole 310 can be parallel to... Figure 5 and Figure 6 The Y-axis is parallel in the coordinate system.

[0042] Both the second longitudinal bar 1421 and the second vertical bar 1422 can be made of channel steel. The second longitudinal bar 1421 and the second vertical bar 1422 are set at an angle, for example, perpendicularly. One end of the second longitudinal bar 1421, for example, the front end, can be fixedly connected to the first vertical bar 1412 of the first bracket 141 by means of bolts or welding. The other end of the second longitudinal bar 1421, for example, the rear end, can be fixedly connected to the first backwater plate 150 by means of bolts or welding.

[0043] The second support 142 may further include a second crossbar, which extends along the width of the hole 310, and both ends of the second crossbar are fixedly connected to the corresponding second longitudinal bar 1421. The second crossbar may be made of channel steel.

[0044] The bottom end of the second vertical rod 1422 can be directly connected to the bottom of the hole 310, or it can be connected to the bottom of the hole 310 through other structures such as channel steel.

[0045] In this optional embodiment, both ends of the second longitudinal rod 1421 are connected to the first bracket 141 and the first backwater plate 150 respectively, while both ends of the second vertical rod 1422 are connected to the second longitudinal rod 1421 and the bottom of the hole 310 respectively. Therefore, the second vertical rod 1422 can serve as a vertical support column for the connection between the two ends of the second longitudinal rod 1421 and the first bracket 141 and the first backwater plate 150. These vertical support columns (the second vertical rods 1422) are rigidly connected to the first bracket 141 and the first backwater plate 150 through the second longitudinal rod 1421 (extending along the length direction of the hole 310). In this way, after the upstream water pressure of the diversion tunnel 300 is transmitted through the gridded first bracket 141, part of it is diverted to the second vertical rods 1422 through the second longitudinal rod 1421, forming a shortest force transmission path that goes vertically downward directly to the foundation, so that the second vertical rods 1422 distributed at intervals along the width direction can uniformly disperse the concentrated load to the foundation of the hole 310, correspondingly improving the stability of the connection between the first truss 140 and the hole 310. The other part of the upstream water pressure is transmitted to the first backwater plate through the second longitudinal rod 1421, correspondingly improving the water retaining effect on the water flow. Moreover, the load transmitted by the water flow has been borne by the second vertical rods 1422, reducing the dependence on friction or anchoring on the side wall of the diversion tunnel 300, thereby simplifying the installation of the first truss 140 and being friendly to the protection of the tunnel wall of the diversion tunnel 300.

[0046] Optionally, in conjunction with Figure 6 as shown, the second bracket 142 further includes a first diagonal rod 1423, the first diagonal rod 1423 is configured to be parallel to the horizontal plane, the first diagonal rod 1423 is arranged at an included angle with the second longitudinal rod 1421, and both ends of the first diagonal rod 1423 are connected to the first bracket 141 and the first backwater plate 150 respectively.

[0047] Specifically, the horizontal plane may be parallel to Figure 6 the plane formed by the X-axis and the Y-axis in the coordinate system.

[0048] The first diagonal rod 1423 may be arranged at an included angle with each of the second longitudinal rod 1421, the first bracket 141 and the first backwater plate 150.

[0049] The front end of the first diagonal rod 1423 and the first bracket 141 may be fixedly connected by means of bolt fasteners, welding or the like, and the rear end of the first diagonal rod 1423 and the first backwater plate 150 may be fixedly connected by means of bolt fasteners, welding or the like.

[0050] The second bracket 142 may include a plurality of first diagonal rods 1423, some of the first diagonal rods 1423 are arranged at included angles, and may form a "meter"-shaped structure with the second longitudinal rods 1421 at partial positions. The first diagonal rod 1423 may be of channel steel structure.

[0051] In this optional embodiment, the horizontally arranged first diagonal brace 1423 is connected to the first support 141 and the first backwater plate 150. On the horizontal projection plane, it forms a triangular stable structure with the second longitudinal brace 1421. When the first truss 140 is subjected to asymmetrical loads or dynamic water impact, the first diagonal brace 1423 can effectively resist the relative displacement or torsional tendency between the first water-facing plate 120 and the first backwater plate 150 in the horizontal direction, ensuring the absolute rigidity of the frame-type first truss 140 in the horizontal plane. It provides a more direct transmission path for part of the horizontal shear force acting on the first water-facing plate 120 to the first backwater plate 150 and the rear support, reducing the stress burden on the connection nodes. Furthermore, the first diagonal brace 1423 is set at an angle to the second longitudinal brace 1421. When the first water-facing plate 120 is subjected to water flow impact, the first diagonal brace 1423 can convert part of the bending moment borne by the second longitudinal brace 1421 into axial force, significantly reducing the bending deformation of the second longitudinal brace 1421, and further improving the structural stability of the entire first truss 140.

[0052] Optionally, combined Figure 5 As shown, the second bracket 142 also includes a plurality of second diagonal rods 1424, which are spaced apart along the width direction of the hole 310. The height of the first water-facing plate 120 is higher than the height of the first water-receiving plate 150. The two ends of the second diagonal rods 1424 are respectively connected to the top end of the first bracket 141 and the top end of the first water-receiving plate 150.

[0053] Specifically, the second diagonal brace 1424 can be a channel steel structure.

[0054] Since the height of the first water-facing plate 120 is higher than the height of the first water-receiving plate 150, the second diagonal rod 1424 is set at an angle to the horizontal plane, and the horizontal plane can be aligned with the horizontal plane. Figure 6 The planes formed by the X-axis and Y-axis in the coordinate system are parallel.

[0055] The front end of the second diagonal rod 1424 is fixedly connected to the top end of the first bracket 141 by means of bolts, fasteners, welding, etc., and the rear end of the second diagonal rod 1424 is fixedly connected to the top end of the first backwater plate 150 by means of bolts, fasteners, welding, etc.

[0056] In this optional embodiment, the height of the first water-receiving plate 120 is higher than the height of the first water-receiving plate 150, so that the water flow will not exceed the first water-receiving plate 120 under any working condition due to the greater height of the first water-receiving plate 120; while the height of the first water-receiving plate 150 is lower than the height of the first water-receiving plate 120, which is equivalent to reducing the area of ​​the first water-receiving plate 150 and reducing the material cost of the drainage assembly 110; the first water-receiving plate 150, together with the higher first water-receiving plate 120 and the top second diagonal rod 1424, together enclose a top-open "corridor" or "chamber", which allows maintenance personnel to easily connect and fix the first water-receiving plate 150 and the second bracket 142, and the first water-receiving plate and the first bracket in the "corridor" or "chamber" area during the installation phase, and to easily operate the first valve, check the sealing of the first drain pipe 130, and conduct leakage observation during the later maintenance phase, realizing the integration of "water blocking, drainage, and maintenance", which greatly improves maintainability.

[0057] Optionally, combined Figure 5 As shown, the first truss 140 also includes a third support 143, which includes a third horizontal bar 1431 and a plurality of third vertical bars 1432. The third horizontal bar 1431 extends along the width direction of the hole 310, and the plurality of third vertical bars 1432 are distributed at intervals along the width direction of the hole 310. The third horizontal bar 1431 and the third vertical bars 1432 are arranged at an angle and are fixedly connected to the first backwater plate 150.

[0058] Specifically, the third horizontal bar 1431 and the third vertical bar 1432 can both be made of channel steel. The third horizontal bar 1431 and the third vertical bar 1432 are set at an angle, for example, vertically. At least one of the third horizontal bar 1431 and the third vertical bar 1432 can be fixedly connected to the first backwater plate 150 by bolts, fasteners, or welding.

[0059] In this optional embodiment, a plurality of third horizontal bars 1431 spaced apart along the height direction of the hole 310 are arranged at an angle to a plurality of third vertical bars 1432 spaced apart along the width direction of the hole 310, and are fixedly connected to the first backwater plate 150, so as to form a dense and regular grid-like third support 143 on the surface of the first backwater plate 150 facing the first water-facing plate 120. This is equivalent to increasing the overall stiffness and bending resistance of the first backwater plate 150 along the width and height directions of the hole 310, and correspondingly reducing the probability of the first backwater plate 150 deforming under high-pressure water flow. Moreover, by configuring an independent grid-like third support 143 for the first backwater plate 150, structural performance symmetry and balance with the first water-facing plate 120 side are achieved, providing the first backwater plate 150 with a direct vertical force transmission path and a multi-functional installation interface, thereby improving the structural strength of the entire drainage assembly 110.

[0060] Optionally, combined Figure 2 and Figure 6 As shown, the drainage assembly 110 includes a plurality of first drainage pipes 130, which are spaced apart along the width direction of the hole 310. The first back water plate 150 is provided with a second through hole, and the end of the first drain pipe 130 away from the first water-facing plate 120 is sealed through the second through hole.

[0061] Specifically, the inner diameter of the second perforation can be slightly larger than that of the first drain pipe 130, so that the first drain pipe 130 can be smoothly inserted into the second perforation of the first backwater plate 150.

[0062] In this optional embodiment, since multiple first drain pipes 130 are spaced apart along the width direction of the hole 310, in short, multiple first drain pipes 130 work in parallel. When the cross-section of the hole 310 of the guide hole 300 is large, even if individual first drain pipes 130 are blocked or the first valve fails, the other first drain pipes 130 can still ensure the drainage function and improve the reliability of the drainage operation.

[0063] One end of the first drain pipe 130 is sealed to the first perforation of the first water-receiving plate 120, and the other end of the first drain pipe 130 is sealed to the second perforation of the first back water plate 150. In other words, the two ends of the first drain pipe 130 are fixed by the first water-receiving plate 120 and the first back water plate 150 respectively to ensure the installation stability of the first drain pipe 130 and avoid the problem of displacement or misalignment of the first drain pipe 130 during the drainage process.

[0064] Optionally, combined Figure 1 As shown, the first drainage component 100 includes a plurality of drainage assemblies 110, which are arranged along the length of the hole 310, and the plurality of first drain pipes 130 corresponding to the plurality of drainage assemblies 110 are connected in sequence.

[0065] Specifically, the length direction of the hole 310 can be parallel to... Figure 1 The Y-axis is parallel in the coordinate system.

[0066] The arrangement of multiple drainage assemblies 110 along the length of the hole 310 can be understood as follows: multiple drainage pipes corresponding to two adjacent drainage assemblies 110 are connected in sequence; and along the length of the hole, the first water-facing plate 120 of the latter drainage assembly 110 can be connected and sealed to the first water-returning plate 150 of the former drainage assembly 110 by means of structural connectors (e.g., connecting rods) and integral concrete pouring.

[0067] In this optional embodiment, since each hole 310 of the diversion tunnel 300 is relatively long, a single drainage assembly 110 may not be able to be stably installed in the long hole 310. Therefore, multiple drainage assemblies 110 are connected end to end in each hole 310 to form multiple continuous first drainage components 100. If the first drainage assembly 110 at the upstream (water-facing side) (close to the gate) leaks due to seal damage, material fatigue or foreign object impact, the second and third drainage assemblies 110 behind it can intercept it step by step, ensuring that the seepage is completely controlled between the two barriers and absolutely guaranteeing the dry conditions of the downstream working area.

[0068] Furthermore, for the diversion tunnel 300, which may have extremely high water pressure, the total head pressure borne by a single-section drainage assembly 110 is extremely high, posing a severe challenge to materials, design, and manufacturing. Therefore, connecting multiple drainage assemblies 110 in series can decompose the entire first drainage component 100 into multiple sections, which are then borne by each drainage assembly 110 in stages. This significantly reduces the load and design difficulty of each drainage assembly 110, and correspondingly reduces the design and material costs of the first drainage component 100.

[0069] The multi-section drainage assembly 110 naturally forms independent compartments, allowing for phased and regional construction, drainage, maintenance, or testing, which greatly enhances the flexibility and fault tolerance of complex engineering construction organization.

[0070] Optionally, combined Figure 1 and Figure 7 As shown, the temporary sealing and drainage structure also includes a second drainage component 200, which is used to be disposed at the tail end of the plurality of holes 310; The second drainage component 200 includes a second truss 210, a second drain pipe 220, and a second valve. Multiple first backwater plates 150 corresponding to multiple first drainage components 100 are respectively connected to the second truss 210. The first drain pipe 130 is connected to the second drain pipe 220. The second valve is disposed on the second drain pipe 220 and is used to control the connection or disconnection between the two ends of the second drain pipe 220.

[0071] Specifically, in the region where the gate is located within the two holes 310, these portions of the two holes 310 are arranged in parallel and distributed along the width direction of the guide tunnel; in the region where the first drainage component 100 is located within the holes 310, these portions of the two holes 310 are arranged at an angle; along the overall length direction (flow direction) of the guide tunnel 300, multiple holes 310 will converge at the tail end (at a certain position) of the first drainage component to form a wider hole 310. Therefore, the holes 310 can be basically divided into three sections. In the first section, the two holes 310 are arranged in parallel, and the gate can be located within the holes in the first section; in the second section, the two holes 310 are arranged at an angle and converge to form a wider hole, and the first drainage component 100 can be located within the holes in the second section; in the third section, there is only one hole, and the width of this hole is greater than the width of the holes in the first and second sections, and the second drainage component 200 can be located within the holes in the third section. The corresponding position inside the hole 310 relative to the gate can be defined as the front end of the hole 310, and the end of the hole 310 away from the gate can be defined as the tail end of the hole 310.

[0072] The second drainage assembly 200 is used to connect multiple drainage assemblies 110 located at the rear end of the multiple first drainage assemblies 100 into a whole.

[0073] Exemplary illustration, in conjunction with Figure 2 and Figure 7 As shown, if there are two holes 310 and two first drainage components 100, and the drainage assembly 110 of the first drainage component 100 includes two first drainage pipes 130, then the second drainage component 200 includes four second drainage pipes 220 to ensure that each first drainage pipe 130 can be connected to the corresponding second drainage pipe 220.

[0074] The second truss 210 is used to fix and connect the multiple first backwater plates 150 at the tail end of the multiple first drainage components 100. The structure of the second truss 210 can be the same as or different from that of the first truss 140. As long as the second truss 210 can connect the multiple first backwater plates 150 together by using different rod-shaped connectors (such as channel steel) in a cross-fixed connection manner, it is applicable to this technical solution. Therefore, the specific structure of the second truss 210 is not specifically limited.

[0075] A second valve may be installed on each second drain pipe 220.

[0076] The first and second valves can be manual or electric valves.

[0077] In this optional embodiment, due to the different water pressures and geological deformations of each hole 310, uneven displacement or deformation may occur between the first drainage components 100 of different holes 310, forming structural weaknesses. Therefore, the second drainage component 200, as a "node" or "connecting beam" located at the intersection, is rigidly connected together by the first backwater plates 150 of all adjacent first drainage components 100 through the second truss 210. In short, the first drainage components 100 in multiple holes 310 of the diversion tunnel 300 are integrated into a continuous, spatially gridded giant water-retaining wall through the second truss 210. This can improve the overall rigidity and stability of the entire temporary sealing drainage structure when subjected to large water pressure, effectively resist uneven loads, and prevent local instability from causing chain damage. Moreover, it can also eliminate unexpected gaps between the first drainage components 100, ensuring the continuity of the water-retaining seal along the width direction of the entire diversion tunnel 300.

[0078] The second drain pipe 220 of the second drainage component 200 is connected to the first drain pipe 130 of the first drainage component 100, and a second valve is provided on each second drain pipe 220. This is equivalent to the outlets of the drainage structures (first drain pipes and first valves) that are dispersed in each hole 310 being converged into a small total outlet. Operators do not need to move between the dispersed first drainage components 100. They only need to set up the second drainage component 200 at the junction and operate the second valve to achieve overall control of the drainage status (full drainage, limited drainage, or shut-off) of the entire work area. This effectively improves the management efficiency and safety of drainage operations in the diversion tunnel 300.

[0079] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A temporary sealing and drainage structure suitable for a diversion tunnel, wherein the diversion tunnel is provided with a plurality of holes (310) spaced apart along its width, characterized in that, The temporary sealing and drainage structure includes a plurality of first drainage components (100), each of which is used to be installed in the corresponding hole (310); The first drainage component (100) includes a drainage assembly (110), which includes a first water-receiving plate (120), a first drain pipe (130), a first valve, and a first truss (140). The first water-receiving plate (120) is arranged vertically and is used to block the water flow in the hole (310). The first truss (140) is fixedly connected to the end face of the first water-receiving plate (120) away from the water flow. The first water-receiving plate (120) is provided with a first through hole. The first drain pipe (130) is sealed through the first through hole of the first water-receiving plate (120). The first valve is provided in the first drain pipe (130) and is used to control the connection or disconnection between the two ends of the first drain pipe (130).

2. The temporary sealing and drainage structure for diversion tunnels according to claim 1, characterized in that, The drainage assembly (110) further includes a first back water plate (150), and the end of the first truss (140) away from the first water-facing plate (120) is fixedly connected to the first back water plate (150); the first back water plate (150) is arranged vertically and is parallel to the first water-facing plate (120).

3. The temporary sealing and drainage structure for diversion tunnels according to claim 2, characterized in that, The first truss (140) includes a first support (141), the first support (141) includes a plurality of first horizontal bars (1411) and a plurality of first vertical bars (1412), the plurality of first horizontal bars (1411) are spaced apart along the height direction of the hole (310), the first horizontal bars (1411) extend along the width direction of the hole (310), the plurality of first vertical bars (1412) are spaced apart along the width direction of the hole (310), the first horizontal bars (1411) and the first vertical bars (1412) are set at an angle and are fixedly connected to the first water-facing plate (120).

4. The temporary sealing and drainage structure for diversion tunnels according to claim 3, characterized in that, The first truss (140) further includes a second support (142), the second support (142) includes a plurality of second longitudinal bars (1421) and a plurality of second vertical bars (1422), the plurality of second longitudinal bars (1421) are spaced apart along the width direction of the hole (310), the second longitudinal bars (1421) extend along the length direction of the hole (310), and the plurality of second vertical bars (1422) are spaced apart along the width direction of the hole (310); The top end of each of the second vertical rods (1422) is connected to the portion between the two ends of the second vertical rod (1421), and the bottom end of each of the second vertical rods (1422) is used to connect to the bottom of the hole (310); one end of the second vertical rod (1421) is connected to the first bracket (141), and the other end of the second vertical rod (1421) is connected to the first backwater plate (150).

5. The temporary sealing and drainage structure for diversion tunnels according to claim 4, characterized in that, The second bracket (142) further includes a first diagonal rod (1423), which is configured to be parallel to the horizontal plane. The first diagonal rod (1423) is set at an angle to the second vertical rod (1421), and the two ends of the first diagonal rod (1423) are respectively connected to the first bracket (141) and the first backwater plate (150).

6. The temporary sealing and drainage structure for diversion tunnels according to claim 4, characterized in that, The second bracket (142) also includes a plurality of second diagonal rods (1424), which are spaced apart along the width direction of the hole (310). The height of the first water-facing plate (120) is higher than the height of the first water-receiving plate (150). The two ends of the second diagonal rods (1424) are respectively connected to the top of the first bracket (141) and the top of the first water-receiving plate (150).

7. The temporary sealing and drainage structure for diversion tunnels according to claim 4, characterized in that, The first truss (140) also includes a third support (143), which includes a third horizontal bar (1431) and a plurality of third vertical bars (1432). The third horizontal bar (1431) extends along the width direction of the hole (310), and the plurality of third vertical bars (1432) are spaced apart along the width direction of the hole (310). The third horizontal bar (1431) and the third vertical bars (1432) are arranged at an angle and are fixedly connected to the first backwater plate (150).

8. The temporary sealing and drainage structure for diversion tunnels according to claim 2, characterized in that, The drainage assembly (110) includes a plurality of first drain pipes (130), which are spaced apart along the width direction of the hole (310); The first back water plate (150) is provided with a second perforation, and the end of the first drain pipe (130) away from the first water-facing plate (120) is sealed through the second perforation.

9. The temporary sealing and drainage structure for a diversion tunnel according to any one of claims 2 to 8, characterized in that, The first drainage component (100) includes a plurality of drainage assemblies (110), which are arranged along the length of the hole (310), and the plurality of first drain pipes (130) corresponding to the plurality of drainage assemblies (110) are connected in sequence.

10. The temporary sealing and drainage structure for a diversion tunnel according to claim 9, characterized in that, The temporary sealing and drainage structure also includes a second drainage component (200), which is used to be disposed at the tail end of the plurality of holes (310); The second drainage component (200) includes a second truss (210), a second drain pipe (220), and a second valve. Multiple first backwater plates (150) corresponding to multiple first drainage components (100) are respectively connected to the second truss (210). The first drain pipe (130) is connected to the second drain pipe (220). The second valve is disposed on the second drain pipe (220) and is used to control the connection or disconnection between the two ends of the second drain pipe (220).

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