Ecological drainage structure in diversion tunnel plugging period

Abstract

The ecological drainage structure comprises a diversion tunnel inlet structure, an ecological drainage pipe, a diversion tunnel plugging gate opening and closing system and an ecological drainage pipe plugging gate opening and closing system, and the ecological drainage pipe is buried in a reinforced concrete gate pier on one side of the diversion tunnel inlet structure; a gate groove of the diversion tunnel blocking gate opening and closing system is located in the diversion tunnel inlet structure, and an opening and closing machine is located at the top of a bent frame of the diversion tunnel inlet structure. The gate groove of the ecological blow-off pipe blocking gate opening and closing system is located in the diversion tunnel reinforced concrete gate pier on the same side with the ecological blow-off pipe, and the hoist is located at the top of the diversion tunnel reinforced concrete gate pier on the same side with the ecological blow-off pipe. Ecological protection and water conservancy projects are fused, the structure is simple, the ecological blow-off pipe is pre-buried in the diversion tunnel inlet structure, in the diversion tunnel blocking period, the blocking gate descends to stop water, ecological flow is discharged through the ecological blow-off pipe, and water conservancy projects and ecological protection are fused.

Description

Technical Field

[0001] The invention relates to water conservancy engineering and ecological protection technology, and in particular to an ecological water release structure during the plugging period of a diversion tunnel. Background Art

[0002] In order to solve the diversion problem and realize dry land construction during the construction of water conservancy hubs, diversion tunnels are usually built to divert water from the upstream of the river to the downstream. During the construction period, ecological flow is discharged through the diversion tunnel. However, there is no way to discharge the ecological flow during the process from the sluice gate of the diversion tunnel to the water level in front of the dam rising to the bottom elevation of the inlet of the power generation water diversion tunnel.

[0003] Ecological flow is the minimum water flow required to maintain the survival of downstream organisms and ecological balance. Integrating ecological protection and water conservancy project construction and ensuring the discharge of ecological flow during the closure of diversion tunnels are key issues that need to be addressed in the current construction of water conservancy hubs. Summary of the invention

[0004] The present invention aims at the problems encountered in actual engineering and proposes an ecological water release structure during the plugging period of the diversion tunnel to solve the problem of ecological flow discharge during the plugging period of the diversion tunnel, ensure the continuous flow of ecological flow during the entire engineering construction period, and realize the integration of water conservancy engineering and ecological protection.

[0005] The technical solution adopted by the present invention is:

[0006] An ecological water discharge structure during the diversion tunnel plugging period, comprising a diversion tunnel inlet structure, an ecological water discharge pipe, a diversion tunnel plugging gate opening and closing system, and an ecological water discharge pipe plugging gate opening and closing system;

[0007] The diversion tunnel inlet structure includes gate piers on both sides, a bottom plate, a top plate, and a rack, which are, from bottom to top, the bottom plate, gate piers on both sides, the top plate, and the rack;

[0008] The ecological water discharge pipe is buried in the gate pier on one side of the diversion tunnel inlet structure;

[0009] The diversion tunnel blocking gate opening and closing system comprises a diversion tunnel blocking gate, a hoist, a steel cable and a gate slot; the hoist of the diversion tunnel blocking gate is located at the top of the frame of the diversion tunnel inlet structure, and the gate slot of the diversion tunnel blocking gate is located in the diversion tunnel inlet structure; the lower part of the hoist of the diversion tunnel blocking gate is connected to the steel cable, and the lower part of the steel cable is connected to the diversion tunnel blocking gate, and the diversion tunnel blocking gate is placed into the gate slot of the diversion tunnel blocking gate by the diversion tunnel blocking gate hoist to achieve the lower gate blocking of the diversion tunnel;

[0010] The ecological discharge pipe blocking gate opening and closing system includes an ecological discharge pipe blocking gate, an opening and closing machine, a pull rod and a gate groove; the opening and closing machine of the ecological discharge pipe blocking gate is located on the top of the top plate of the diversion tunnel inlet structure, and the gate groove of the ecological discharge pipe blocking gate is located in the reinforced concrete gate pier of the diversion tunnel on the same side as the ecological discharge pipe. The lower part of the ecological discharge pipe blocking gate opening and closing machine is connected to the pull rod, and the lower part of the pull rod is connected to the ecological discharge pipe blocking gate. The ecological discharge pipe blocking gate is placed in the gate groove of the ecological discharge pipe blocking gate by the ecological discharge pipe blocking gate opening and closing machine to achieve the blocking of the ecological discharge pipe.

[0011] Furthermore, the gate piers on both sides of the diversion tunnel inlet structure, the bottom plate, the top plate and the upper frame are all reinforced concrete structures, which are connected into a whole by reinforced concrete.

[0012] Furthermore, stainless steel railings are arranged around the top of the rack.

[0013] The beneficial effects of the present invention are:

[0014] The present invention can be used for ecological water release during the plugging of the diversion tunnel, solving the problem of interruption of ecological flow discharge during the plugging of the diversion tunnel. It has the characteristics of simple structure, convenient operation, low engineering cost, etc., and has high promotion and application value in the field of reservoir hub engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the longitudinal section structure of the present invention;

[0016] Figure 2 for Figure 1 AA cross-sectional structural diagram;

[0017] Figure 3 for Figure 2 BB cross-sectional structure diagram;

[0018] Figure 4 for Figure 2 Schematic diagram of CC cross-section structure;

[0019] Figure 5 It is a layout diagram of the diversion tunnel blocking gate opening and closing system of the present invention;

[0020] Figure 6 This is a layout diagram of the ecological drainage pipe blocking gate opening and closing system of the present invention.

[0021] In the figure: 1-diversion tunnel inlet structure; 2-ecological discharge pipe; 11-gate pier; 12-bottom plate; 13-top plate; 14-rack; 15-stainless steel railing; 3-diversion tunnel blocking gate opening and closing system; 31-diversion tunnel blocking gate opening and closing machine; 32-diversion tunnel blocking gate; 33-diversion tunnel blocking gate slot; 34-steel cable; 4-ecological discharge pipe blocking gate opening and closing system; 41-ecological discharge pipe blocking gate opening and closing machine; 42-ecological discharge pipe blocking gate; 43-ecological discharge pipe blocking gate slot; 44-pull rod. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] like Figure 1 to Figure 6 As shown, an ecological water discharge structure for diversion tunnel plugging period of the present invention comprises a diversion tunnel inlet structure 1, an ecological water discharge pipe 2, a diversion tunnel plugging gate opening and closing system 3 and an ecological water discharge pipe plugging gate opening and closing system 4, wherein the diversion tunnel inlet structure 1 comprises gate piers 11 on both sides, a bottom plate 12, a top plate 13, a rack 14 and a stainless steel railing 15. The ecological water discharge pipe 2 is pre-buried in the gate pier 11 on one side of the diversion tunnel inlet structure 1. The gate groove 33 of the diversion tunnel plugging gate opening and closing system 3 is located in the diversion tunnel inlet structure 1, and the hoist 31 is located at the top of the diversion tunnel inlet structure rack 14; the gate groove 43 of the ecological water discharge pipe plugging gate opening and closing system 4 is located in the diversion tunnel reinforced concrete gate pier 11 on the same side as the ecological water discharge pipe 2, and the hoist 41 is located at the top of the diversion tunnel reinforced concrete gate pier 11 on the same side as the ecological water discharge pipe 2.

[0024] The gate piers 11 on both sides, the bottom plate 12, the top plate 13 and the frame 14 of the diversion tunnel inlet structure 1 are all reinforced concrete structures, which are connected as a whole by reinforced concrete. From bottom to top, they are the bottom plate 12, the gate piers 11 on both sides, the top plate 13, the frame 14 and the stainless steel railings 15. The stainless steel railings 15 are located on the free surfaces around the top of the frame 14.

[0025] like Figure 5 As shown, the diversion tunnel blocking gate opening and closing system 3 includes a diversion tunnel blocking gate opening and closing machine 31, a diversion tunnel blocking gate 32, a diversion tunnel blocking gate slot 33 and a steel cable 34. The diversion tunnel blocking gate opening and closing machine 31 is placed on the top of the upper frame 14 of the diversion tunnel inlet structure, the diversion tunnel blocking gate slot 33 is located in the diversion tunnel inlet structure 1, the lower part of the diversion tunnel blocking gate opening and closing machine 31 is connected to the steel cable 34, and the lower part of the steel cable 34 is connected to the diversion tunnel blocking gate 32, and the diversion tunnel blocking gate 32 is placed into the diversion tunnel blocking gate slot 33 by the diversion tunnel blocking gate opening and closing machine 31 to achieve the lower gate blocking of the diversion tunnel.

[0026] like Figure 6As shown, the ecological discharge pipe blocking gate opening and closing system 4 includes an ecological discharge pipe blocking gate opening and closing machine 41, an ecological discharge pipe blocking gate 42, an ecological discharge pipe blocking gate slot 43 and a pull rod 44. The ecological discharge pipe blocking gate opening and closing machine 41 is placed on the top of the diversion tunnel inlet structure top plate 13, and the ecological discharge pipe blocking gate slot 43 is located in the diversion tunnel reinforced concrete pier 11 on the same side as the ecological discharge pipe. The lower part of the ecological discharge pipe blocking gate opening and closing machine 41 is connected to the pull rod 44, and the lower part of the pull rod 44 is connected to the ecological discharge pipe blocking gate 42. The ecological discharge pipe blocking gate opening and closing machine 41 is used to put the ecological discharge pipe blocking gate 42 into the ecological discharge pipe blocking gate slot 43 to achieve the blocking of the ecological discharge pipe 2.

[0027] The construction and use steps of the present invention are as follows:

[0028] S1. Calculate and determine the diameter of the ecological drainage pipe 2 according to the ecological flow rate to be discharged.

[0029] S2. Before the river is cut off and the diversion tunnel is filled with water, the diversion tunnel inlet structure 1 and the pre-buried ecological drainage pipe 2 are completed, and the diversion tunnel blocking gate opening and closing system 3 and the ecological drainage pipe blocking gate opening and closing system 4 are installed.

[0030] S3. When the main structure of the reservoir hub project is completed and water is to be stored, the diversion tunnel is sealed by the diversion tunnel blocking gate opening and closing system 3.

[0031] S4. After the diversion tunnel is closed, the ecological flow is discharged through the ecological discharge pipe 2. The upstream water level continues to rise with the upstream water. When the upstream water level exceeds the bottom elevation of the inlet of the power generation water diversion tunnel, the ecological flow can be discharged through the power generation water diversion tunnel. At this time, the ecological discharge pipe 2 is closed and blocked by the ecological discharge pipe blocking gate opening and closing system 4, and the inside of the diversion tunnel is blocked with concrete.

[0032] The above embodiments describe the present invention in conjunction with the accompanying drawings, but this should not be understood as limiting the scope of protection of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the technical solutions obtained by equivalent replacement or equivalent transformation methods all belong to the scope of protection of the present invention.

Claims

1. An ecological water release structure during the plugging period of a diversion tunnel, characterized by: It includes a diversion tunnel inlet structure, an ecological water discharge pipe, a diversion tunnel blocking gate opening and closing system, and an ecological water discharge pipe blocking gate opening and closing system; The diversion tunnel inlet structure includes gate piers on both sides, a bottom plate, a top plate, and a rack, which are, from bottom to top, the bottom plate, gate piers on both sides, the top plate, and the rack; The ecological water discharge pipe is buried in the gate pier on one side of the diversion tunnel inlet structure; The diversion tunnel blocking gate opening and closing system comprises a diversion tunnel blocking gate, a hoist, a steel cable and a gate slot; the hoist of the diversion tunnel blocking gate is located at the top of the frame of the diversion tunnel inlet structure, and the gate slot of the diversion tunnel blocking gate is located in the diversion tunnel inlet structure; the lower part of the hoist of the diversion tunnel blocking gate is connected to the steel cable, and the lower part of the steel cable is connected to the diversion tunnel blocking gate, and the diversion tunnel blocking gate is placed into the gate slot of the diversion tunnel blocking gate by the diversion tunnel blocking gate hoist to achieve the lower gate blocking of the diversion tunnel; The ecological discharge pipe blocking gate opening and closing system includes an ecological discharge pipe blocking gate, an opening and closing machine, a pull rod and a gate groove; the opening and closing machine of the ecological discharge pipe blocking gate is located on the top of the top plate of the diversion tunnel inlet structure, and the gate groove of the ecological discharge pipe blocking gate is located in the reinforced concrete gate pier of the diversion tunnel on the same side as the ecological discharge pipe. The lower part of the ecological discharge pipe blocking gate opening and closing machine is connected to the pull rod, and the lower part of the pull rod is connected to the ecological discharge pipe blocking gate. The ecological discharge pipe blocking gate is placed in the gate groove of the ecological discharge pipe blocking gate by the ecological discharge pipe blocking gate opening and closing machine to achieve the blocking of the ecological discharge pipe.

2. The ecological water release structure during the plugging period of the diversion tunnel according to claim 1 is characterized by: The gate piers on both sides of the diversion tunnel inlet structure, the bottom plate, the top plate and the upper frame are all reinforced concrete structures and are connected into a whole through reinforced concrete.

3. The ecological water release structure during the plugging period of the diversion tunnel according to claim 1 or 2, characterized in that: Stainless steel railings are arranged around the top of the rack.

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