CN113417253B

CN113417253B - Large-section diversion tunnel staged blocking structure and construction method

Info

Publication number: CN113417253B
Application number: CN202110709641.4A
Authority: CN
Inventors: 陈庆欢; 陈永杨; 郑沛
Original assignee: Yueqing Dayu Water Conservancy And Hydropower Engineering Co ltd
Current assignee: Yueqing Dayu Water Conservancy And Hydropower Engineering Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2022-08-23
Anticipated expiration: 2041-06-25
Also published as: CN113417253A

Abstract

The application relates to the technical field of building engineering, and discloses a large-section diversion tunnel stage plugging structure and a construction method, which comprises a support plate, a first-stage plugging body and a second-stage plugging body which are arranged in a diversion tunnel, wherein the support plate divides the diversion tunnel into a first channel and a second channel, the first-stage plugging body is used for plugging the first channel, the second-stage plugging body is used for plugging the second channel, an operating mechanism for intercepting the second channel is arranged in the diversion tunnel, the operating mechanism comprises two operating strips arranged in the second channel, a stop block arranged on the bottom wall of the second channel and a pressing assembly arranged below the support plate, a gate is arranged on one side of the operating strips facing to the inlet of the diversion tunnel, an operating cylinder is hinged to one side of the gate far away from the inlet of the diversion tunnel, the operating cylinder is hinged to the support plate, the stop block is abutted to the gate, the pressing assembly is used for plugging a gap between the gate and the support plate, the second stage shutoff body is established in the gate and is kept away from one side of diversion tunnel import department, and this application has the effect that reduces the construction degree of difficulty.

Description

Large-section diversion tunnel staged blocking structure and construction method

Technical Field

The application relates to the technical field of constructional engineering, in particular to a staged plugging structure of a large-section diversion tunnel and a construction method.

Background

At present, diversion tunnels refer to tunnels for construction diversion purposes. In the construction period, the original river water flow is led to the tunnel behind the downstream cofferdam from the upstream cofferdam.

The diversion tunnel plugging structure in the related art comprises two pier studs, a bent frame stud, a gate and a lifting device which are arranged in the diversion tunnel, wherein a gate slot is formed in one side, close to each other, of the two pier studs. The diversion tunnel plugging method is that two pier columns are built at the opening of the diversion tunnel, bent columns are arranged on the pier columns, a hoisting device is arranged on the bent columns, and a gate is hoisted and placed between two gate slots through the hoisting device.

To the above-mentioned correlation technique, the inventor thinks above-mentioned when the diversion tunnel is great, the framed bent post that needs to adopt is great higher, needs to be under construction longer time, and the shutoff entrance to a cave needs great gate in addition, and the reservoir often sets up in the deep mountain, causes inconvenience to the gate transportation, has increased the construction degree of difficulty for the diversion tunnel shutoff.

Disclosure of Invention

In order to improve the difficulty of blocking the conductive tunnel, the application provides a staged blocking structure of a large-section diversion tunnel and a construction method.

The application provides a large-section diversion tunnel staged plugging structure and a construction method, which adopt the following technical scheme:

a large-section diversion tunnel staged plugging structure comprises a supporting plate, a first-stage plugging body and a second-stage plugging body which are arranged in a diversion tunnel, wherein the supporting plate divides the diversion tunnel into a first channel and a second channel, the first-stage plugging body is used for plugging the first channel, the second-stage plugging body is used for plugging the second channel, an operating mechanism for intercepting the second channel is arranged in the diversion tunnel, the operating mechanism comprises two operating strips arranged in the second channel, a stop block arranged on the bottom wall of the second channel and a pressing component arranged below the supporting plate, one sides, far away from each other, of the two operating strips are respectively connected with the side wall of the second channel, a gate is arranged on one side, facing the inlet of the diversion tunnel, of the gate, one side, far away from the inlet of the diversion tunnel, is hinged with an operating cylinder, and the operating cylinder is hinged with the lower end face of the supporting plate, one side and the gate butt of dog, compress tightly the clearance that the subassembly is used for shutoff gate and backup pad between, the second phase shutoff body sets up in the gate and keeps away from one side of diversion tunnel import department.

By adopting the technical scheme, the first channel is blocked by the first-stage blocking body to prevent water from passing through the first channel, the second channel is blocked by the second-stage blocking body to prevent water from passing through the second channel, and the diversion tunnel is gradually blocked by multiple times of blocking, so that the difficulty in blocking the diversion tunnel and the construction risk are reduced; an operating mechanism is adopted to cut off the second channel, so that the second-stage plugging body is convenient for workers to construct; when the gate is not cut off, the supporting plate is positioned above the operating strip, and the operating cylinder is in a contraction state; when the gate dams, operation cylinder drive gate removes towards the direction of diversion tunnel import, and when the focus of gate was located the operation strip and is close to diversion tunnel import department one side, the gate took place to rotate, until gate and dog butt, the gate dams to the second passageway this moment.

Optionally, the pressing assembly is located on one side, close to the inlet of the diversion tunnel, of the operation strip, the lower end face of the supporting plate is provided with a fixing groove, the pressing assembly comprises a pressing block arranged in the fixing groove, the pressing block is arranged in the fixing groove in a sliding mode, the lower end face of the pressing block is abutted to the upper end face of the gate, and the distance between the gate and the supporting plate is smaller than the height of the pressing block.

By adopting the technical scheme, when the gate does not block the second channel, the pressing block is contacted with the gate due to self gravity, when the gate slides on the operation strip, the pressing block is always contacted with the gate, when the gate rotates, the pressing block slides along the surface of the gate, and when the gate is vertical, the pressing block is abutted to the upper end surface of the gate until the gate blocks the second channel; when the compact heap contacts with the gate, with the clearance shutoff between gate and the backup pad, make water be difficult for passing through between backup pad and the gate.

Optionally, a groove is formed in one end, facing the supporting plate, of the operating strip, and a roller is rotatably connected in the groove.

By adopting the technical scheme, when the gate does not cut off the second channel, the gate is positioned above the operation strip. When the gate moves, the gate moves above the operation strip in a sliding mode, and the gate is greatly abraded; after setting up the gyro wheel, gate and gyro wheel contact when operation cylinder drive gate removes, become the roll mode with the slip mode to reduce the wearing and tearing of gate, protect the gate, set up behind the gyro wheel in addition, reduced the frictional force when gate slides, make the more convenient drive gate of operation cylinder remove.

Optionally, a positioning mechanism for limiting rotation of the gate is arranged in the diversion tunnel, a positioning groove is formed in the inner wall of the diversion tunnel, the positioning mechanism comprises a positioning cylinder arranged in the positioning groove, a positioning block is fixedly connected to a piston rod of the positioning cylinder, and when the piston rod of the positioning cylinder extends out, the positioning block extends out of the positioning groove.

By adopting the technical scheme, when the gate intercepts the second channel, the operation cylinder drives the gate to move, when the gate exceeds the operation strip for a certain length, the lower end face of the gate is in contact with the upper end face of the positioning block, and the positioning block supports the gate to limit the rotation of the gate; when the piston rod of the positioning cylinder retracts, the positioning block does not support the gate any more, and the gate rotates due to the self gravity.

Optionally, a containing groove is formed above the positioning block, and a ball is arranged in the containing groove.

Through adopting above-mentioned technical scheme, when not having the ball, no matter be the operation cylinder drive gate remove, still the location cylinder drive locating piece removes, all through sliding motion between gate and the locating piece in two kinds of circumstances, it is great to locating piece and gate wearing and tearing. Set up the ball, when gate motion or locating plate motion, all adopt the roll mode between gate and the ball, reduced the frictional force between gate and the locating piece, reduced the wearing and tearing of gate and locating piece.

Optionally, one side of each of the two operation strips, which is close to each other, is hinged with a buffer cylinder, and a piston rod of the buffer cylinder is hinged with the gate.

By adopting the technical scheme, when the gate does not intercept the second channel, the piston rod of the buffer cylinder is in a contraction state; when the operation cylinder drives the gate to move towards the direction of the inlet of the diversion tunnel, the piston rod of the buffer cylinder is stretched; when the gate rotates, the buffer cylinder applies acting force to the gate, the rotating speed of the gate is reduced, the acting force of the gate on the stop block is reduced, and the gate and the stop block are protected.

Optionally, a buffer mechanism located below the positioning mechanism is arranged in the diversion tunnel, a limiting groove is formed in the inner wall of the diversion tunnel, the buffer mechanism comprises a limiting spring and a limiting block which are arranged in the limiting groove, two ends of the limiting spring are respectively and fixedly connected with the bottom of the limiting groove, which is far away from the opening, and the limiting block is provided with a first chamfer, and the first chamfer is arranged at the junction of the upper end surface of the limiting block and one side of the limiting block, which is far away from the limiting spring; when the limiting spring is not stressed, the limiting block extends out of the limiting groove.

Through adopting above-mentioned technical scheme, when the gate fell on the stopper, the gate received the stopper and blockked and slowed down the slew velocity of gate, nevertheless because be provided with first chamfer on the stopper, the gate is to the gravity of stopper for the stopper is embedded into the spacing inslot, and the gate rotates once more when the stopper is embedded into the spacing groove completely, makes gate and dog contact, because the speed of gate reduces to some extent, the gate reduces the effort of dog, makes gate and dog not fragile.

Optionally, an elastic block is arranged on the end face of the stop block facing the inlet of the diversion tunnel.

By adopting the technical scheme, when the gate is closed, the gate is firstly contacted with the elastic block, the elastic block has a buffering effect, and when the gate is contacted with the elastic block, the elastic block slows down the speed of the gate and reduces the acting force of the gate on the stop block; in addition, the gate and the stop block are separated by the elastic block, so that the gate does not collide with the stop block, and the gate and the stop block are not easy to damage.

Optionally, a support column is arranged on the lower end face of the support plate, and the lower end face of the support column is fixedly connected with the lower end face of the diversion tunnel.

Through adopting above-mentioned technical scheme, set up the support column, support the backup pad, share the effort that the backup pad received, to the backup pad protection, improve the life of backup pad.

A construction method of a staged plugging structure of a large-section diversion tunnel comprises the following steps: measuring the height and the width of the diversion tunnel, and determining the length of the supporting plate;

constructing a supporting plate in the diversion tunnel to divide the diversion tunnel into a first channel and a second channel;

constructing a first-stage plugging body in the first channel;

constructing an operation strip and a stop block in the second channel, mounting a gate on the operation strip, mounting a pressing assembly and an operation cylinder on the support plate, and connecting the gate with the operation mechanism;

driving the gate to move by using the operating mechanism, rotating the gate after the gate exceeds the operating strip for a certain length, and enabling the gate to rotate to be in contact with the stop block to finish the second channel closure;

and step six, constructing a second-stage plugging body in the second channel.

By adopting the technical scheme, the diversion tunnel is gradually plugged through the steps from the first step to the fifth step, so that the construction procedures of the diversion tunnel are reduced, and the plugging difficulty and the construction risk of the diversion tunnel are reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the first channel is blocked by adopting a first-stage blocking body to prevent water from passing through the first channel, the second channel is blocked by adopting a second-stage blocking body to prevent water from passing through the second channel, and the diversion tunnel is gradually blocked by multiple times of blocking, so that the difficulty of blocking the diversion tunnel and the construction risk are reduced; an operating mechanism is adopted to cut off the second channel, so that the second-stage plugging body is convenient for workers to construct; when the gate is not cut off, the supporting plate is positioned above the operating strip, and the operating cylinder is in a contraction state; when the gate is in closure, the operation cylinder drives the gate to move towards the direction of the diversion tunnel inlet, and when the gravity center of the gate is positioned at one side of the operation strip close to the diversion tunnel inlet, the gate rotates until the gate is abutted against the stop block, and the gate is in closure on the second channel;

2. the buffer cylinder, the elastic block and the buffer mechanism are arranged, so that the effect of slowing down the descending speed of the gate is achieved, and the stop block and the gate are not easy to damage.

Drawings

Fig. 1 is a schematic structural view of an outlet of a diversion tunnel when a plugging structure in an embodiment of the present application is in a final state;

FIG. 2 is an enlarged schematic view of the final plugging structure, after removal of the second stage plugging block, as viewed from the diversion tunnel exit;

fig. 3 is a schematic structural view from the inlet of the diversion tunnel when the blocking structure is in the final state;

FIG. 4 is a partial cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view at B in FIG. 4;

FIG. 6 is a partial cross-sectional view highlighting the operating cylinder structure with the closure structure in the final state;

FIG. 7 is a partial cross-sectional view of the highlighting cushioning mechanism with the occluding structure in a final state;

FIG. 8 is a schematic view of the occluding structure in an initial state;

FIG. 9 is a partial cross-sectional view taken along line C-C of FIG. 8;

fig. 10 is a partial cross-sectional view of the gate as it would rotate.

Reference numerals: 1. a support plate; 11. fixing grooves; 2. a first stage plugging body; 3. a second stage plugging body; 4. a support pillar; 5. an operating mechanism; 51. an operating bar; 511. a groove; 512. a roller; 513. a fourth round bar; 52. a gate; 521. a card slot; 53. a stopper; 531. an elastic block; 54. operating the cylinder; 541. a first support block; 542. a first round bar; 543. a first insert block; 544. a second support block; 545. a second round bar; 55. a compression assembly; 551. a compression block; 552. a compression spring; 6. a positioning mechanism; 61. positioning blocks; 611. a containing groove; 612. a ball bearing; 62. positioning the air cylinder; 7. a buffer mechanism; 71. a limiting block; 72. a limiting spring; 8. a buffer cylinder; 81. a third support block; 82. a third round bar; 83. a second insert block; 9. a diversion tunnel; 91. a first channel; 92. a second channel; 93. positioning a groove; 94. a limiting groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-10.

The embodiment discloses a staged plugging structure of a large-section diversion tunnel and a construction method. Referring to fig. 1 and 2, a staged plugging structure for a large-section diversion tunnel comprises a support plate 1, a primary plugging body 2, a secondary plugging body 3 and a plurality of support columns 4, wherein the support plate 1, the primary plugging body 2, the secondary plugging body 3 and the support columns are arranged in a diversion tunnel 9.

Referring to fig. 1 and 2, two horizontal ends of the support plate 1 are fixedly connected with inner walls of two sides of the diversion tunnel 9 respectively, the diversion tunnel 9 is divided into an upper part and a lower part by the support plate 1, a first channel 91 is formed by the upper end surface of the support plate 1 and the inner wall of the diversion tunnel 9 in an enclosing manner, and a second channel 92 is formed by the lower end surface of the support plate 1 and the inner wall of the diversion tunnel 9 in an enclosing manner. The first stage blocking body 2 is used for blocking the first channel 91, and the second stage blocking body 3 is used for blocking the second channel 92.

Referring to fig. 2, the plurality of support columns 4 are all fixedly connected to the lower end surface of the support plate 1, and the lower end surfaces of the plurality of support columns 4 are all fixedly connected to the bottom wall of the second channel 92. The supporting plate 1 is supported by the supporting columns 4, and the acting force of the supporting plate 1 is shared, so that the supporting plate 1 is prevented from being broken.

Referring to fig. 3 and 4, an operating mechanism 5 for intercepting the second channel 92 is disposed in the diversion tunnel 9, and the operating mechanism 5 is located below the support plate 1. The operating mechanism 5 includes an operating bar 51, a shutter 52, a stopper 53, an operating cylinder 54, and a pressing assembly 55.

Referring to fig. 4 and 5, an operating mechanism 5 for intercepting the second channel 92 is disposed in the diversion tunnel 9, two operating strips 51 are disposed, and the sides of the two operating strips 51 far away from each other are respectively fixedly connected with the two horizontal side walls of the second channel 92. The two operating bars 51 are horizontally symmetrically distributed along the axis of the second passage 92. The end surface of the operating strip 51 facing the support plate 1 is provided with two grooves 511, and the two grooves 511 are distributed in an array along the length direction of the operating strip 51. A roller 512 is rotatably connected in each of the two grooves 511, and the highest point of the roller 512 is higher than the upper end surface of the operating strip 51. The groove 511 nearest to the inlet of the diversion tunnel 9 penetrates through the operation strip 51 towards the inlet of the diversion tunnel 9, and the roller 512 nearest to the inlet of the diversion tunnel 9 extends out of the operation strip 51 towards the inlet of the diversion tunnel 9.

Referring to fig. 4, a gate 52 is provided at a side of the operation strip 51 near the entrance of the diversion tunnel 9. The two stop blocks 53 are respectively fixedly connected with two horizontal side walls of the second channel 92, the lower end faces of the two stop blocks 53 are fixedly connected with the bottom wall of the second channel 92, and the upper end faces of the two stop blocks 53 are respectively fixedly connected with the lower end face of the operating strip 51. The two stoppers 53 are positioned on one side of the gate 52 far away from the inlet of the diversion tunnel 9, and the elastic blocks 531 are fixedly connected on one sides of the two stoppers 53 facing the inlet of the diversion tunnel 9. The side of the elastic piece 531 remote from the stopper 53 abuts the shutter 52.

Referring to fig. 6, the lower end surface of the support plate 1 is hinged with an operating cylinder 54, and a piston rod of the operating cylinder 54 is hinged with the gate 52. Two first supporting blocks 541 are fixedly connected to the lower end face of the supporting plate 1, a first round hole is formed in one end, close to each other, of the two first supporting blocks 541, and a first round rod 542 is rotatably connected in the first round hole. One side of the operating cylinder 54 facing the first round bar 542 is fixedly connected with a first insertion block 543, and a first insertion hole for the first round bar 542 to pass through is formed in the first insertion block 543. The first insertion block 543 is sleeved outside the first round bar 542, so that the first insertion block 543 and the operating cylinder 54 can rotate along the axis of the first round bar 542.

Referring to fig. 6, one side of the gate 52 facing the operation bar 51 is fixedly connected with two second supporting blocks 544, one side of the two second supporting blocks 544, which is close to each other, is provided with a second circular hole, a second circular rod 545 penetrates through the second circular hole, and a piston rod of the operation cylinder 54 is provided with a second insertion hole through which the second circular rod 545 passes, so that the operation cylinder 54 can rotate along an axis of the second circular rod 545. In other embodiments, the operating cylinder 54 is provided in plurality, and the shutter 52 can be driven to move more preferably.

Referring to fig. 5, a pressing assembly 55 is used to close the gap between the gate 52 and the support plate 1, and the pressing assembly 55 is located on the side of the operation strip 51 near the inlet of the diversion tunnel 9. The supporting plate 1 has an end face facing the gate 52 and is provided with a fixing groove 11, the pressing assembly 55 comprises a pressing block 551 and a pressing spring 552, and the pressing block 551 and the pressing spring 552 are both arranged in the fixing groove 11. One end of the compression spring 552 is fixedly connected with the end surface of the fixing groove 11 far away from the gate 52, and the other end of the compression spring 552 is fixedly connected with the compression block 551. In a natural state, the pressing block 551 protrudes out of the fixing groove 11. The upper end surface of the gate 52 is provided with a clamping groove 521 at one side facing the support plate 1, and the clamping groove 521 can be inserted by the pressing block 551. When the gate 52 blocks the second channel 92, the pressing block 551 is aligned with the clamping groove 521 and is embedded into the clamping groove 521, so that the gate 52 is limited from rotating; when the shutter 52 is not blocking the second passage 92, the end surface away from the pressing spring 552 abuts against the surface of the shutter 52. The height of the pressing block 551 is greater than the distance from the shutter 52 to the support plate 1. The pressing block 551 is provided with a fillet, and the fillet is arranged at the junction of one side of the pressing block 551 facing the operation bar 51 and one side of the pressing block 551 far away from the pressing spring 552.

Referring to fig. 6 and 7, the diversion tunnel 9 is provided therein with a positioning mechanism 6 for restricting the rotation of the gate 52, a buffer mechanism 7 for slowing down the lowering speed of the gate 52, and a buffer cylinder 8.

Referring to fig. 6 and 7, two positioning mechanisms 6 are provided, the two positioning mechanisms 6 are respectively provided on two sides of the diversion tunnel 9, and the positioning mechanism 6 is located on one side of the operation strip 51 near the inlet of the diversion tunnel 9. The inner wall of the second channel 92 is provided with a positioning groove 93. The positioning mechanism 6 comprises a positioning cylinder 62 and a positioning block 61, and the positioning cylinder 62 and the positioning block 61 are both arranged in the positioning groove 93. The positioning block 61 is located on one side of the positioning cylinder 62 close to the second channel 92, and the positioning block 61 is fixedly connected with a piston rod of the positioning cylinder 62. The piston rod of the positioning cylinder 62 is in an extended state, and the positioning block 61 is located outside the positioning groove 93. The positioning block 61 has a receiving groove 611 formed on an upper end surface thereof, and a ball 612 is disposed in the receiving groove 611. The distance between the positioning block 61 and the operating bar 51 is less than half of the height of the gate 52.

Referring to fig. 7, four buffer mechanisms 7 are provided, and four positioning mechanisms 6 are arranged on two sides of the diversion tunnel 9 in pairs. The buffer mechanism 7 is located below the positioning mechanism 6. The inner wall of the second passage 92 is formed with a stopper groove 94. The buffer mechanism 7 includes a limiting spring 72 and a limiting block 71, and both the limiting spring 72 and the limiting block 71 are disposed in the limiting groove 94. One end of the limiting spring 72 is fixedly connected with one end of the limiting groove 94 far away from the second channel 92, and the other end of the limiting spring 72 is fixedly connected with the limiting block 71. The limiting block 71 is provided with a first chamfer, and the first chamfer is arranged at the junction of the upper end face of the limiting block 71 and one side of the limiting block 71, which is far away from the limiting spring 72.

Referring to fig. 6, two buffer cylinders 8 are provided, and the two buffer cylinders 8 are respectively provided on the two operation bars 51. The buffer cylinder 8 is hinged with one side of the operating bar 51 facing the operating cylinder 54, and a piston rod of the buffer cylinder 8 is hinged with the gate 52. Two third supporting blocks 81 of gate 52 one end fixedly connected with towards cushion cylinder 8, the third round hole has been seted up to the one side that third supporting block 81 is close to each other, wears to be equipped with third pole 82 in the third round hole, sets up the third jack that supplies third pole 82 to pass on cushion cylinder 8's the piston rod for cushion cylinder 8 can be rotatory along the axis of third pole 82. A fourth round bar 513 is fixedly connected to a side of the operation bar 51 facing the operation cylinder 54. A second inserting block 83 is sleeved outside the fourth round rod 513, and one side of the second inserting hole is fixedly connected with the buffer cylinder 8.

The above description of the blocking structure is based on the final state, which is changed from the initial state, which is shown in fig. 8 and 9.

In the initial state of the shutter 52, the shutter 52 is located above the two operation bars 51, and the roller 512 abuts against the surface of the shutter 52. The operating cylinder 54 is in an initial state, and the piston rod of the operating cylinder 54 is in a contracted state. In the initial state of the pressing assembly 55, the lower end surface of the pressing block 551 abuts against the surface of the shutter 52, and the pressing spring 552 is in a compressed state. The buffer cylinder 8 is in an initial state, and a piston rod of the buffer cylinder 8 is in a contraction state.

Referring to fig. 4 and 9, the process from the initial state to the final state of the blocking structure is as follows, the operation cylinder 54 is started, the operation cylinder 54 drives the gate 52 to move above the roller 512, the gate 52 extends out of the operation bar 51 and moves above the positioning block 61, the upper end of the ball 612 is abutted with the gate 52 until the piston rod of the operation cylinder 54 extends to the longest length, at which time the gate 52 does not move towards the direction of the inlet of the diversion tunnel 9, and the state is as shown in fig. 10.

Referring to fig. 5 and 7, the positioning cylinder 62 is activated to drive the positioning block 61 to be completely inserted into the positioning groove 93. The gate 52 is no longer restrained by the positioning mechanism 6 and the gate 52 rotates by its own weight along the axis of the roller 512 closest to the entrance of the diversion tunnel 9. Due to the arrangement of the first chamfer, the gate 52 drives the stopper 71 to be embedded in the stopper groove 94, and the gate 52 continues to descend until the gate 52 turns vertical and abuts against the elastic block 531.

Referring to fig. 5, 8 and 9, the movement process of the pressing block 551: first, when the shutter 52 moves horizontally, the pressing block 551 does not move; secondly, performing secondary drying; when the gate 52 rotates, the pressing block 551 descends along with the rotation of the gate 52, and when the gate 52 rotates by 45 degrees, the pressing block 551 descends to the lowest point; the pressing block 551 ascends along with the rotation of the gate 52 until the pressing block 551 abuts against the end face of the gate 52 provided with the clamping groove 521; when the compression block 551 is aligned with the card slot 521, the compression block 551 descends to fit into the card slot 521.

Referring to fig. 4, 8 and 9, the operation of the cushion cylinder 8: when the shutter 52 moves horizontally, the piston rod of the cushion cylinder 8 extends as the shutter 52 moves; when the gate 52 rotates, the gate 52 drives the piston rod of the buffer cylinder 8 to retract, and at the moment, the buffer cylinder 8 plays a role in buffering the descending speed of the gate 52.

A construction method of a staged plugging structure of a large-section diversion tunnel comprises the following steps: measuring the height and the width of the diversion tunnel 9, and determining the length of the support plate 1;

step two, constructing a support plate 1 in the diversion tunnel 9, and dividing the diversion tunnel 9 into a first channel 91 and a second channel 92;

constructing a first-stage plugging body 2 in the first channel 91;

step four, constructing an operation strip 51 and a stop block 53 in the second channel 92, installing a gate 52 on the operation strip 51, installing a pressing component 55 and an operation cylinder 54 on the support plate 1, and connecting the gate 52 with the operation mechanism 5;

step five, the operating mechanism 5 is used for driving the gate 52 to move, the gate 52 exceeds the operating strip 51 for a certain length and then rotates, so that the gate 52 rotates to be in contact with the stop block 53, and the second channel 92 is cut off;

and step six, constructing a second-stage plugging body 3 in the second channel 92.

The implementation principle of the embodiment of the application is as follows: the construction method comprises the steps of firstly constructing the support column 4 and the support plate 1, dividing the diversion tunnel 9 into two parts, then constructing the first-stage plugging body 2 in the first channel 91, then intercepting the second channel 92 through the cooperation of the operation cylinder 54, the gate 52, the operation strip 51, the stop block 53 and the pressing assembly 55, and finally constructing the second-stage plugging body 3 in the second channel 92, so that the plugging of the diversion tunnel 9 is completed.

The above description is only a preferred embodiment of the present application and should not be taken as limiting the present application, and any modifications, equivalents, improvements and the like made within the design concept of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a large cross section diversion tunnel block structure by stage which characterized in that: the device comprises a support plate (1), a first-stage plugging body (2) and a second-stage plugging body (3) which are arranged in a diversion tunnel (9), wherein the support plate (1) divides the diversion tunnel (9) into a first channel (91) and a second channel (92), the first-stage plugging body (2) is used for plugging the first channel (91), the second-stage plugging body (3) is used for plugging the second channel (92), an operating mechanism (5) for plugging the second channel (92) is arranged in the diversion tunnel (9), the operating mechanism (5) comprises two operating strips (51) arranged in the second channel (92), a stop block (53) arranged on the bottom wall of the second channel (92) and a pressing component (55) arranged below the support plate (1), one sides of the two operating strips (51) far away from each other are respectively connected with the side wall of the second channel (92), and a gate (52) is arranged on one side of the operating strip (51) facing to the diversion tunnel (9), an operation cylinder (54) is hinged to one side, away from the inlet of the diversion tunnel (9), of the gate (52), the operation cylinder (54) is hinged to the lower end face of the support plate (1), one side of the stop block (53) is abutted to the gate (52), the pressing assembly (55) is used for blocking a gap between the gate (52) and the support plate (1), and the second-stage blocking body (3) is arranged on one side, away from the inlet of the diversion tunnel (9), of the gate (52);

be provided with restriction gate (52) pivoted positioning mechanism (6) in diversion tunnel (9), constant head tank (93) have been seted up to diversion tunnel (9) inner wall, positioning mechanism (6) are including setting up location cylinder (62) in constant head tank (93), the piston rod fixedly connected with locating piece (61) of location cylinder (62), when the piston rod of location cylinder (62) stretches out, locating piece (61) stretch out outside constant head tank (93).

2. The staged blocking structure for a large-section diversion tunnel according to claim 1, wherein: the pressing assembly (55) is located on one side, close to an inlet of a diversion tunnel (9), of the operation strip (51), a fixing groove (11) is formed in the lower end face of the supporting plate (1), the pressing assembly (55) comprises a pressing block (551) arranged in the fixing groove (11), the pressing block (551) is arranged in the fixing groove (11) in a sliding mode, the lower end face of the pressing block (551) is abutted to the upper end face of the gate (52), and the distance between the gate (52) and the supporting plate (1) is smaller than the height of the pressing block (551).

3. The staged blocking structure for a large-section diversion tunnel according to claim 1, wherein: one end of the operating strip (51) facing the supporting plate (1) is provided with a groove (511), and a roller (512) is rotatably connected in the groove (511).

4. The staged plugging structure for a large-section diversion tunnel according to claim 1, wherein: an accommodating groove (611) is formed in the upper portion of the positioning block (61), and a ball (612) is arranged in the accommodating groove (611).

5. The staged plugging structure for a large-section diversion tunnel according to claim 1, wherein: one side of each of the two operation strips (51) close to each other is hinged with a buffer cylinder (8), and a piston rod of each buffer cylinder (8) is hinged with a gate (52).

6. The staged plugging structure for a large-section diversion tunnel according to claim 1, wherein: a buffer mechanism (7) positioned below the positioning mechanism (6) is arranged in the diversion tunnel (9), a limiting groove (94) is formed in the inner wall of the diversion tunnel (9), the buffer mechanism (7) comprises a limiting spring (72) and a limiting block (71) which are arranged in the limiting groove (94), two ends of the limiting spring (72) are fixedly connected with the bottom of the limiting groove (94) far away from the opening and the limiting block (71) respectively, a first chamfer is arranged on the limiting block (71), and the first chamfer is arranged at the junction of the upper end surface of the limiting block (71) and one side of the limiting block (71) far away from the limiting spring (72); when the limiting spring (72) is not stressed, the limiting block (71) extends out of the limiting groove (94).

7. The staged blocking structure for a large-section diversion tunnel according to claim 1, wherein: the end face of the stop block (53) facing the inlet of the diversion tunnel (9) is provided with an elastic block (531).

8. The staged blocking structure for a large-section diversion tunnel according to claim 1, wherein: the lower end face of the supporting plate (1) is provided with a supporting column (4), and the lower end face of the supporting column (4) is fixedly connected with the lower end face of the diversion tunnel (9).

9. The construction method of the staged blocking structure of the large-section diversion tunnel according to claim 1, characterized in that: the method comprises the following steps: measuring the height and the width of the diversion tunnel (9) to determine the length of the support plate (1);

step two, constructing a support plate (1) in the diversion tunnel (9) to divide the diversion tunnel (9) into a first channel (91) and a second channel (92);

constructing a first-stage plugging body (2) in the first channel (91);

fourthly, constructing an operation strip (51) and a stop block (53) in the second channel (92), installing a gate (52) on the operation strip (51), installing a pressing assembly (55) and an operation cylinder (54) on the support plate (1), and connecting the gate (52) with the operation mechanism (5);

step five, driving the gate (52) to move by using the operating mechanism (5), and rotating the gate (52) after the gate (52) exceeds the operating strip (51) for a certain length to enable the gate (52) to rotate and contact the stop block (53) to complete the interception of the second channel (92);

and sixthly, constructing a second-stage plugging body (3) in the second channel (92).