A temporary water-stopping structure for the portal of a water diversion tunnel.

Abstract

This invention discloses a temporary water-stopping structure for the portal of a water diversion tunnel, belonging to the field of water diversion tunnel construction technology. The structure includes a portal body and a control mechanism. A top gap sealing mechanism is provided at the top of the inner side of the portal body, a side gap sealing mechanism is provided in the middle of the inner side of the portal body, and a bottom gap sealing mechanism is provided at the bottom of the inner side of the portal body. The control mechanism is located on the backwater surface of the portal body and is connected to the top and side gap sealing mechanisms. Through the cooperation of the bottom, side, and top gap sealing mechanisms, the gap between the portal body and the portal sidewall can be tightly sealed, achieving the purpose of sealing the water diversion tunnel portal and preventing water seepage. After the water diversion tunnel construction is completed, the control mechanism can be used to retract the side and top gap sealing mechanisms inward, allowing the temporary water-stopping structure to be removed and reused.

Description

Technical Field

[0001] This invention relates to a temporary water-stopping structure for the portal of a water diversion tunnel, belonging to the field of water diversion tunnel construction technology. Background Technology

[0002] A water diversion tunnel, also known as a water conveyance tunnel or water conservancy tunnel, is a man-made tunnel built into mountains, underground, or underwater. Its core function is to transport water from one location to another, and it is mainly suitable for mountainous rivers with narrow valleys and steep banks. It is a key infrastructure for solving the uneven spatial and temporal distribution of water resources, realizing inter-basin water transfer, and meeting the needs of urban water supply, agricultural irrigation, and hydropower generation.

[0003] During the construction of water diversion tunnels, water-stop structures are installed to temporarily seal the tunnel entrances to prevent water seepage. However, existing water-stop structures are difficult to reuse, and gaps can easily exist between them and the inner wall of the tunnel entrance during the sealing process, resulting in incomplete sealing. Therefore, improvements are needed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a temporary water-stopping structure for the portal of a water diversion tunnel.

[0005] This invention is achieved through the following technical solution: A temporary water-stopping structure for a tunnel portal used in water diversion tunnel construction includes a portal body and a control mechanism. The top of the inner side of the portal body is provided with a top gap sealing mechanism, the middle of the inner side of the portal body is provided with a side gap sealing mechanism, and the bottom of the inner side of the portal body is provided with a bottom gap sealing mechanism. The control mechanism is located on the backwater surface of the portal body and is connected to the top gap sealing mechanism and the side gap sealing mechanism.

[0006] The door body includes a first door panel and a second door panel. The first door panel and the second door panel have the same shape and size. The lower part of the first door panel and the second door panel are both rectangular and the upper part is both semi-circular. The first door panel and the second door panel have cavities on their adjacent sides. A gap is left between the first door panel and the second door panel. The cavity on the first door panel, the gap between the first door panel and the second door panel, and the cavity on the second door panel together form an installation cavity. The second door panel is connected to the first door panel by multiple connecting rods, and the connecting rods are located in the installation cavity. The second door panel is located on the back side of the first door panel. Two horizontal plates are fixedly arranged side by side on the back surface of the second door panel, and multiple vertical holes are provided on the two horizontal plates at equal intervals.

[0007] The top gap sealing mechanism includes an arc-shaped airbag and an arc-shaped airbag push-pull component. The arc-shaped airbag is located at the top of the gap between the first door panel and the second door panel, and the center of the arc-shaped airbag is concentric with the center of the upper part of the first door panel and the second door panel. Both arc-shaped ends of the arc-shaped airbag are provided with elastic blocks. One end of the elastic block is fixedly provided with a limiting block, and the limiting block is located in the installation cavity. Multiple support blocks are fixedly provided at equal intervals on the inner circular surface of the arc-shaped airbag. The arc-shaped airbag push-pull component is located in the installation cavity. Each support block is movably connected to the arc-shaped airbag push-pull component through two connecting components A.

[0008] The arc-shaped airbag push-pull component includes two bow-shaped connecting frames, which are arranged side by side and concentrically. The center of the bow-shaped connecting frames is concentric with the center of the upper part of the first door panel and the second door panel. A third extension rod is fixedly connected to the center of each of the two bow-shaped connecting frames along the axial direction. A third hydraulic cylinder is slidably connected to one end of the third extension rod away from the bow-shaped connecting frame. The third hydraulic cylinder on one of the third extension rods is fixedly connected to the first door panel, and the third hydraulic cylinder on the other third extension rod is fixedly connected to the second door panel. Each support block is movably connected to two bow-shaped connecting frames via connecting component A.

[0009] The connecting component A includes a connecting rod, one end of which is rotatably connected to the bow-shaped connecting frame via a third rotating shaft, and the other end of which is rotatably connected to the support block via a third rotating shaft; The outer circumferential edge of the arc-shaped airbag is provided with an arc-shaped groove, and a sealing strip is installed in the arc-shaped groove.

[0010] The side gap sealing mechanism includes two strip-shaped airbags, which are respectively located at the left and right ends of the gap between the first door panel and the second door panel. The two strip-shaped airbags are connected by a strip-shaped airbag push-pull component, which is located inside the mounting cavity.

[0011] The strip-shaped airbag push-pull component includes a crossbeam, two expansion plates, two support rods, and two second hydraulic cylinders. The crossbeam is located inside the mounting cavity and fixed to the first door panel. Two symmetrical grooves are opened on the crossbeam. The two expansion plates are arranged side by side, and the two expansion plates are slidably connected to the two grooves one by one through sliders. T-shaped grooves are opened on the sides of the two expansion plates that are close to each other, and limit grooves are opened at the upper ends of the two expansion plates. The two support rods are arranged crosswise, and the middle of the two support rods are rotatably connected through a fifth rotating shaft. T-shaped sliders are rotatably connected to both ends of the support rods through a fourth rotating shaft, and the T-shaped sliders at both ends of the support rods are slidably connected to the T-shaped grooves on the two expansion plates one by one. Fixed blocks are fixed on the two second hydraulic cylinders, and the fixed blocks are rotatably connected to the first door panel through a first rotating shaft. Second extension rods are slidably connected to the inner sides of the two second hydraulic cylinders, and the second extension rods on the two second hydraulic cylinders are rotatably connected to the upper parts of the two support rods through second rotating shafts. The two strip-shaped airbags are respectively installed on the two expansion plates, and the two expansion plates are located between the two strip-shaped airbags.

[0012] At the bottom of the crossbeam, two first hydraulic cylinders are arranged side by side and perpendicular to it. Both first hydraulic cylinders are connected to the control mechanism. The inner side of each first hydraulic cylinder is slidably connected to a first extension rod. The lower ends of the two first extension rods are connected to an end plate. Multiple positioning rods are evenly spaced at the bottom of the end plate, and the lower ends of the positioning rods are tapered.

[0013] The bottom gap sealing mechanism includes a mounting block and a sealing gasket. The mounting block is fixedly installed in the lower part of the cavity of the second door panel, and a groove is opened at the bottom of the mounting block. The sealing gasket is located in the groove, and the shape and size of the sealing gasket are adapted to the shape and size of the groove. Multiple strip grooves are opened at equal intervals at the bottom of the sealing gasket, and multiple guide rods are arranged side by side at the top. The guide rods pass through the mounting block and are slidably connected to the mounting block. A limiting block is provided on the upper side of the mounting block on the guide rod. An installation groove is opened at the bottom of the mounting block at a position corresponding to the guide rod. A spring is fitted on the guide rod between the bottom surface of the installation groove and the sealing gasket.

[0014] The control mechanism includes a drive motor, a gear disk, a first liquid storage tank, a second liquid storage tank, and a third liquid storage tank. The drive motor is mounted on the second door panel via a mounting base, and a drive gear is mounted on the output shaft of the drive motor. A slip ring is coaxially mounted on the gear disk, and the slip ring is rotatably connected to the second door panel. The gear disk meshes with the drive gear. From the inside to the outside, a third guide groove, a first guide groove, and a second guide groove are sequentially provided on the back surface of the gear disk. A first circular slider, a second circular slider, and a third circular slider are correspondingly slidably mounted in the first guide groove, the second guide groove, and the third guide groove. The first, second, and third liquid storage tanks are all mounted on the second door panel, and a piston plate is slidably mounted in each of the first, second, and third liquid storage tanks. A control rod is fixedly mounted on the piston plate, and the control rod is connected to the piston plate. The stopper plate is arranged vertically and penetrates the side wall of the first, second, or third liquid storage tank. A connecting block is provided at the end of the control rod away from the piston plate. The connecting block on the control rod connected to the piston plate in the first liquid storage tank is rotatably connected to the third circular slider. The connecting block on the control rod connected to the piston plate in the second liquid storage tank is rotatably connected to the first circular slider. The connecting block on the control rod connected to the piston plate in the third liquid storage tank is rotatably connected to the second circular slider. The rodless chambers of the first, second, and third liquid storage tanks are all filled with hydraulic oil. The rodless chamber of the first liquid storage tank is connected to two first hydraulic cylinders through a second connecting pipe. The rodless chamber of the second liquid storage tank is connected to the side gap sealing mechanism through a first connecting pipe. The rodless chamber of the third liquid storage tank is connected to the top gap sealing mechanism through a third connecting pipe. The first guide groove includes a first arc slide and a second arc slide, and the two ends of the second arc slide are smoothly connected to the two ends of the first arc slide one by one through transition slides. The second guide groove includes a third arc slide and a fourth arc slide. The two ends of the fourth arc slide are smoothly connected to the two ends of the third arc slide one by one through transition slides. The third guide groove includes a fifth arc slide and a sixth arc slide. The two ends of the sixth arc slide are smoothly connected to the two ends of the fifth arc slide through transition slides. The first, second, third, fourth, fifth, and sixth circular arc slides are all arranged concentrically with the gear disk, and the diameter of the fifth circular arc slide is less than the diameter of the sixth circular arc slide, less than the diameter of the first circular arc slide, less than the diameter of the second circular arc slide, less than the diameter of the fourth circular arc slide, and less than the diameter of the third circular arc slide. In the initial state, when the third circular slider slides within the fifth circular track, the first and second circular sliders slide within the first and fourth circular tracks respectively. When the gear disk rotates clockwise, the first, second, and third circular sliders will perform the following actions in chronological order: the third circular slider enters the sixth circular track, the first circular slider enters the second circular track, the second circular slider enters the third circular track, the second circular slider enters the fourth circular track, the first circular slider enters the first circular track, and the third circular slider enters the fifth circular track, thus completing one cycle.

[0015] The beneficial effects of this invention are as follows: 1. By cooperating with the bottom gap sealing mechanism, the side gap sealing mechanism and the top gap sealing mechanism, the gap between the portal body and the side wall of the portal can be sealed tightly, thereby sealing the portal of the water diversion tunnel and achieving the purpose of water stoppage and seepage prevention. After the construction of the water diversion tunnel is completed, the side gap sealing mechanism and the top gap sealing mechanism can be controlled by the control mechanism to retract inward, and the temporary water-stopping structure of the portal can be removed and reused.

[0016] 2. A single control mechanism can control the top gap sealing mechanism, side gap sealing mechanism, and the first hydraulic cylinder, enabling automatic fixing, sealing, and disassembly of the temporary water-stopping structure at the tunnel portal, significantly improving the ease of operation and use of the temporary water-stopping structure at the tunnel portal. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 A structural diagram from another perspective; Figure 3 This is an assembly drawing of the first door panel, the arc-shaped airbag push-pull component, the second hydraulic cylinder, the crossbeam, the first hydraulic cylinder, the end plate, the positioning rod, and the control mechanism of the present invention. Figure 4 for Figure 3 A structural diagram from another perspective; Figure 5 This is an assembly drawing of the first door panel, top gap sealing mechanism, side gap sealing mechanism, first hydraulic cylinder, end plate, and positioning rod of the present invention; Figure 6 This is a schematic diagram of the top gap sealing mechanism of the present invention; Figure 7 This is an assembly diagram of the second door panel and bottom gap sealing mechanism of the present invention; Figure 8 for Figure 7 A magnified view of a portion at point A; Figure 9This is an assembly diagram of the top clearance sealing mechanism, side clearance sealing mechanism, and control mechanism of the present invention; Figure 10 This is an assembly diagram of the gear disk and slip ring of the present invention; Figure 11 This is a schematic diagram of the gear disk structure of the present invention.

[0018] In the diagram: 1-First door panel, 2-First arc-shaped slide rail, 3-First liquid storage tank, 4-Second liquid storage tank, 5-Third liquid storage tank, 6-Sealing strip, 7-Arc-shaped airbag, 8-Second arc-shaped slide rail, 9-Elastic block, 10-Strip-shaped airbag, 11-Second door panel, 12-Third arc-shaped slide rail, 13-Gear disk, 14-Fourth arc-shaped slide rail, 15-Drive gear, 16-Drive motor, 17-Mounting base, 18-Vertical hole, 19-Horizontal plate, 20-Sealing gasket block, 21-Horizontal beam, 22-First extension rod, 23-End plate, 24-Positioning rod, 25-First hydraulic cylinder, 26-Second hydraulic cylinder, 27-Fixing block, 28-First rotating shaft, 29-First connecting pipe, 30-Third hydraulic cylinder, 31-Support block, 32-Arch-shaped connecting frame, 33 - Second connecting tube, 34- Second extending rod, 35- Second rotating shaft, 36- Third extending rod, 37- Third rotating shaft, 38- Fifth arc slide rail, 39- Sixth arc slide rail, 40- Limiting groove, 41- Limiting block, 42- Fourth rotating shaft, 43- Support rod, 44- Fifth rotating shaft, 45- Expansion plate, 46- Arc groove, 47- Connecting rod, 48- Control rod, 49- Mounting block, 50- Piston plate, 51- Mounting groove, 52- Limiting block, 53- Guide rod, 54- Spring, 55- Groove, 56- Strip groove, 57- Connecting block, 58- Slip ring, 59- First circular slider, 60- Second circular slider, 61- Third circular slider, 62- Third connecting tube, 63- Slide groove, 64- Transition slide rail, 65- Mounting cavity, 66- T-shaped slider. Detailed Implementation

[0019] The technical solution of the present invention is further described below, but the scope of protection is not limited to what is described.

[0020] like Figures 1 to 11 As shown, the present invention provides a temporary water-stopping structure for a tunnel portal used in water diversion tunnel construction, comprising a portal body and a control mechanism. The top of the inner side of the portal body is provided with a top gap sealing mechanism, the middle of the inner side of the portal body is provided with a side gap sealing mechanism, and the bottom of the inner side of the portal body is provided with a bottom gap sealing mechanism. The control mechanism is located on the backwater surface of the portal body and is connected to the top gap sealing mechanism and the side gap sealing mechanism.

[0021] Specifically, after the temporary water-stopping structure is hoisted and positioned at the entrance of the water diversion tunnel, the gap between the door body and the bottom surface of the entrance is sealed by the bottom gap sealing mechanism. Then, the side gap sealing mechanism is pushed outward by the control mechanism to seal the gap between the door body and the inner walls on both sides of the entrance. Next, the top gap sealing mechanism is pushed outward by the control mechanism to seal the gap between the door body and the inner wall at the top of the entrance. Thus, by coordinating the bottom gap sealing mechanism, the side gap sealing mechanism, and the top gap sealing mechanism, the gap between the door body and the side walls of the entrance can be tightly sealed, achieving the purpose of sealing the water diversion tunnel entrance and preventing water seepage. After the water diversion tunnel construction is completed, the side gap sealing mechanism and the top gap sealing mechanism can be retracted inward by the control mechanism, and the temporary water-stopping structure can be removed for reuse.

[0022] The door body includes a first door panel 1 and a second door panel 11. The first door panel 1 and the second door panel 11 have the same shape and size. The lower part of the first door panel 1 and the second door panel 11 are both rectangular and the upper part is both semi-circular. The first door panel 1 and the second door panel 11 are provided with cavities on their adjacent sides. A gap is left between the first door panel 1 and the second door panel 11. The cavity on the first door panel 1, the gap between the first door panel 1 and the second door panel 11, and the cavity on the second door panel 11 together form an installation cavity 65. The second door panel 11 is connected to the first door panel 1 by multiple connecting rods, and the connecting rods are located in the installation cavity 65. The second door panel 11 is located on the back side of the first door panel 1. Two horizontal plates 19 are fixedly arranged side by side on the back surface of the second door panel 11, and multiple vertical holes 18 are provided at equal intervals on the two horizontal plates 19.

[0023] Specifically, two horizontal plates 19 are installed on the back side of the second door panel 11, and multiple vertical holes 18 are provided on the horizontal plates 19 to facilitate the hoisting, moving and transport of the temporary water-stop structure of the doorway.

[0024] The top gap sealing mechanism includes an arc-shaped airbag 7 and an arc-shaped airbag push-pull component. The arc-shaped airbag 7 is located at the top of the gap between the first door panel 1 and the second door panel 11, and the center of the arc-shaped airbag 7 is concentric with the center of the upper part of the first door panel 1 and the second door panel 11. Both arc-shaped ends of the arc-shaped airbag 7 are provided with elastic blocks 9. One end of the elastic block 9 is fixedly provided with a limiting block 41, and the limiting block 41 is located in the mounting cavity 65. Multiple support blocks 31 are fixedly provided at equal intervals on the inner circular surface of the arc-shaped airbag 7. The arc-shaped airbag push-pull component is located in the mounting cavity 65. Each support block 31 is movably connected to the arc-shaped airbag push-pull component through two connecting components A.

[0025] Specifically, the arc-shaped airbag 7 is used to seal the gap between the door and the inner wall of the top of the opening, and the arc-shaped airbag push-pull component is used to drive the arc-shaped airbag 7 outward and inward. The elastic block 9 is used to seal the gap between the arc-shaped airbag 7 and the strip-shaped airbag 10; the limiting block 41 is used to cooperate with the limiting groove 40 at the upper end of the expansion plate 45 to limit the end position of the arc-shaped airbag 7.

[0026] The arc-shaped airbag push-pull component includes two bow-shaped connecting frames 32, which are arranged side by side and concentrically. The center of the bow-shaped connecting frame 32 is concentric with the center of the upper part of the first door panel 1 and the second door panel 11. A third extension rod 36 is fixedly connected to the center of each of the two bow-shaped connecting frames 32 along the axial direction. A third hydraulic cylinder 30 is slidably connected to one end of the third extension rod 36 away from the bow-shaped connecting frame 32. The third hydraulic cylinder 30 on one of the third extension rods 36 is fixedly connected to the first door panel 1, and the third hydraulic cylinder 30 on the other third extension rod 36 is fixedly connected to the second door panel 11. Each support block 31 is movably connected to two bow-shaped connecting frames 32 via connecting component A.

[0027] The connecting component A includes a connecting rod 47, one end of which is rotatably connected to the bow-shaped connecting frame 32 via a third rotating shaft 37, and the other end of which is rotatably connected to the support block 31 via the third rotating shaft 37. The outer circumferential edge of the arc-shaped airbag 7 is provided with an arc-shaped groove 46, and a sealing strip 6 is installed in the arc-shaped groove 46.

[0028] Specifically, when hydraulic oil is injected into the rodless chambers of the two third hydraulic cylinders 30, the hydraulic oil pushes the third extension rod 36 outward, causing the two bow-shaped connecting frames 32 to move closer to each other. Simultaneously, the two bow-shaped connecting frames 32, through the connecting assembly A and the support block 31, push the arc-shaped airbag 7 partly out of the gap between the first door panel 1 and the second door panel 11, until the arc-shaped airbag 7 abuts against the top inner wall of the portal. This seals the gap between the door body and the top inner wall of the portal through the arc-shaped airbag 7. Furthermore, because the arc-shaped airbag 7 has a certain deformation capacity under pressure, it fits more closely to the inner wall of the portal, ensuring a better seal. An arc-shaped groove 46 is provided on the outer circumference of the arc-shaped airbag 7, and a sealing strip 6 is installed within the arc-shaped groove 46 to further improve the sealing effect of the arc-shaped airbag 7 on the gap between the door body and the top inner wall of the portal.

[0029] The side gap sealing mechanism includes two strip-shaped airbags 10, which are respectively located at the left and right ends of the gap between the first door panel 1 and the second door panel 11. The two strip-shaped airbags 10 are connected by a strip-shaped airbag push-pull component, which is located in the mounting cavity 65.

[0030] Specifically, the two strip-shaped airbags 10 are used to seal the gap between the door and the inner walls on both sides of the opening. The strip-shaped airbag push-pull component is used to drive the two strip-shaped airbags 10 outward and inward.

[0031] The strip-shaped airbag push-pull component includes a crossbeam 21, two expansion plates 45, two support rods 43, and two second hydraulic cylinders 26. The crossbeam 21 is located inside the mounting cavity 65 and fixed on the first door panel 1. Two sliding grooves 63 are symmetrically opened on the crossbeam 21. The two expansion plates 45 are arranged side by side, and the two expansion plates 45 are slidably connected to the two sliding grooves 63 one-to-one by sliders. T-shaped sliding grooves (not shown in the figure) are opened on the sides of the two expansion plates 45 that are close to each other, and limit grooves 40 are opened at the upper end of the two expansion plates 45. The two support rods 43 are arranged crosswise, and the two support rods 43... The middle part is rotatably connected by the fifth pivot 44. The two ends of the support rod 43 are respectively rotatably connected by the fourth pivot 42 to T-shaped sliders 66. The T-shaped sliders 66 at both ends of the support rod 43 are slidably connected to the T-shaped grooves on the two expansion plates 45. The two second hydraulic cylinders 26 are each fixedly provided with a fixing block 27. The fixing block 27 is rotatably connected to the first door panel 1 through the first pivot 28. The inner side of the two second hydraulic cylinders 26 is slidably connected with a second extension rod 34. The second extension rods 34 on the two second hydraulic cylinders 26 are respectively rotatably connected to the upper part of the two support rods 43 through the second pivot 35. The two strip-shaped airbags 10 are respectively disposed on the two expansion plates 45, and the two expansion plates 45 are located between the two strip-shaped airbags 10.

[0032] Specifically, when hydraulic oil is injected into the rodless chambers of the two second hydraulic cylinders 26, the hydraulic oil pushes the second extension rod 34 outward, causing the upper ends of the two support rods 43 to rotate in a direction away from each other. The two support rods 43 push the two expansion plates 45 to move in a direction away from each other, thereby pushing the strip-shaped airbags 10 installed on the expansion plates 45 outward to the gap between the first door panel 1 and the second door panel 11, until the two strip-shaped airbags 10 abut against the inner walls on both sides of the tunnel entrance. Thus, the gap between the door body and the inner walls on both sides of the tunnel entrance is sealed by the two strip-shaped airbags 10. Moreover, since the strip-shaped airbags 10 have a certain deformation capacity after being compressed, they fit the inner wall of the tunnel entrance more closely, ensuring the sealing effect.

[0033] The bottom of the crossbeam 21 is provided with two first hydraulic cylinders 25 arranged side by side and perpendicular to it. Both first hydraulic cylinders 25 are connected to the control mechanism. The inner side of each of the two first hydraulic cylinders 25 is slidably connected with a first extension rod 22. The lower ends of the two first extension rods 22 are connected to an end plate 23. The bottom of the end plate 23 is provided with multiple positioning rods 24 at equal intervals, and the lower end of the positioning rods 24 is tapered.

[0034] Specifically, when hydraulic oil is injected into the rodless chambers of the two first hydraulic cylinders 25, the hydraulic oil pushes the two first extension rods 22 downward, thereby moving the end plate 23 downward until the positioning rod 24 is inserted downward into the bottom of the tunnel portal, which serves to fix the temporary water-stopping structure of the tunnel portal.

[0035] The bottom gap sealing mechanism includes a mounting block 49 and a sealing gasket 20. The mounting block 49 is fixedly installed in the lower part of the cavity of the second door panel 11, and a groove 55 is provided at the bottom of the mounting block 49. The sealing gasket 20 is located in the groove 55, and the shape and size of the sealing gasket 20 are adapted to the shape and size of the groove 55. Multiple strip grooves 56 are provided at equal intervals at the bottom of the sealing gasket 20, and multiple guide rods 53 are arranged side by side at the top. The guide rods 53 pass through the mounting block 49 and are slidably connected to the mounting block 49. A limiting block 52 is provided on the upper side of the mounting block 49 on the guide rod 53. An installation groove 51 is provided at the bottom of the mounting block 49 at a position corresponding to the guide rod 53. A spring 54 is fitted on the guide rod 53 between the bottom surface of the installation groove 51 and the sealing gasket 20.

[0036] Specifically, under the spring force of spring 54, the sealing gasket 20 moves downward and partially extends out of the groove 55 until the bottom of the sealing gasket 20 abuts against the bottom surface of the opening, thereby sealing the gap between the door body and the bottom surface of the opening through the sealing gasket 20. Multiple strip grooves 56 are evenly spaced on the bottom of the sealing gasket 20, making it easier for the bottom of the sealing gasket 20 to elastically deform under pressure, which helps to improve the sealing effect of the sealing gasket 20 on the gap between the door body and the bottom surface of the opening.

[0037] The control mechanism includes a drive motor 16, a gear disk 13, a first liquid storage tank 3, a second liquid storage tank 4, and a third liquid storage tank 5. The drive motor 16 is mounted on the second door panel 11 via a mounting base 17, and a drive gear 15 is mounted on the output shaft of the drive motor 16. A slip ring 58 is coaxially mounted on the gear disk 13 and is rotatably connected to the second door panel 11. The gear disk 13 meshes with the drive gear 15. From the inside to the outside, the back surface of the gear disk 13 is provided with a third guide groove, a first guide groove, and a second guide groove. A first circular slider 59, a second circular slider 60, and a third circular slider 61 are correspondingly slidably mounted in the first guide groove, the second guide groove, and the third guide groove. The first liquid storage tank 3, the second liquid storage tank 4, and the third liquid storage tank 5 are all mounted on the second door panel 11, and a piston plate 50 is slidably mounted in each of the first liquid storage tank 3, the second liquid storage tank 4, and the third liquid storage tank 5. A control rod 48 is fixedly mounted on the piston plate 50. The control rod 48 is connected to the piston plate 50. The stopper plate 50 is arranged vertically and penetrates the side wall of the first liquid storage tank 3, the second liquid storage tank 4, or the third liquid storage tank 5. A connecting block 57 is provided at the end of the control rod 48 away from the piston plate 50. The connecting block 57 on the control rod 48 connected to the piston plate 50 in the first liquid storage tank 3 is rotatably connected to the third circular slider 61. The connecting block 57 on the control rod 48 connected to the piston plate 50 in the second liquid storage tank 4 is rotatably connected to the first circular slider 59. The connecting block 57 on the control rod 48 connected to the piston plate 50 in the third liquid storage tank 5 is rotatably connected to the second circular slider 60. The rodless chambers of the first liquid storage tank 3, the second liquid storage tank 4, and the third liquid storage tank 5 are all filled with hydraulic oil. The rodless chamber of the first liquid storage tank 3 is connected to two first hydraulic cylinders 25 through the second connecting pipe 33. The rodless chamber of the second liquid storage tank 4 is connected to the side gap sealing mechanism through the first connecting pipe 29. The rodless chamber of the third liquid storage tank 5 is connected to the top gap sealing mechanism through the third connecting pipe 62.

[0038] Specifically, the rodless chamber of the second liquid storage tank 4 is connected to the rodless chambers of the two second hydraulic cylinders 26 in the side gap sealing mechanism through the first connecting pipe 29, and the rodless chamber of the third liquid storage tank 5 is connected to the rodless chambers of the two third hydraulic cylinders 30 in the top gap sealing mechanism through the third connecting pipe 62.

[0039] The first guide groove includes a first arc slide 2 and a second arc slide 8. The two ends of the second arc slide 8 are smoothly connected to the two ends of the first arc slide 2 one by one through a transition slide 64. The second guide groove includes a third arc slide 12 and a fourth arc slide 14. The two ends of the fourth arc slide 14 are smoothly connected to the two ends of the third arc slide 12 one by one through a transition slide 64. The third guide groove includes a fifth arc slide 38 and a sixth arc slide 39. The two ends of the sixth arc slide 39 are smoothly connected to the two ends of the fifth arc slide 38 one-to-one through a transition slide 64. The first arc slide 2, the second arc slide 8, the third arc slide 12, the fourth arc slide 14, the fifth arc slide 38, and the sixth arc slide 39 are all arranged concentrically with the gear disk 13, and the diameter of the fifth arc slide 38 < the diameter of the sixth arc slide 39 < the diameter of the first arc slide 2 < the diameter of the second arc slide 8 < the diameter of the fourth arc slide 14 < the diameter of the third arc slide 12.

[0040] Specifically, such as Figure 11 As shown, the second arc slide 8, the third arc slide 12 and the sixth arc slide 39 are located in the same position, while the first arc slide 2, the fifth arc slide 38 and the fourth arc slide 14 are located in another position.

[0041] When the drive motor 16 drives the gear disk 13 to rotate via the drive gear 15, the first slider 59, the second slider 60, and the third slider 61 slide within the first guide groove, the second guide groove, and the third guide groove, respectively. Since the diameter of the fifth arc slide 38 < the diameter of the sixth arc slide 39 < the diameter of the first arc slide 2 < the diameter of the second arc slide 8 < the diameter of the fourth arc slide 14 < the diameter of the third arc slide 12, when the first slider 59, the second slider 60, and the third slider 61 slide within the first arc slide 2, the fourth arc slide 14, and the fifth arc slide 38, respectively, the first liquid storage tank 3, the second liquid storage tank 4, and... The piston plate 50 in the third reservoir 5 does not move. When the first slider 59, the second slider 60 and the third slider 61 enter the second arc slide 8, the third arc slide 12 and the sixth arc slide 39 respectively, the piston plate 50 delivers the hydraulic oil in the rodless chambers of the first reservoir 3, the second reservoir 4 and the third reservoir 5 through the second connecting pipe 33, the first connecting pipe 29 and the third connecting pipe 62 to the rodless chambers of the two first hydraulic cylinders 25, the two second hydraulic cylinders 26 and the two third hydraulic cylinders 30 respectively, thereby driving the first extension rod 22, the second extension rod 34 and the third extension rod 36 to move respectively.

[0042] Initially, when the third circular slider 61 slides within the fifth arc slide rail 38, the first circular slider 59 and the second circular slider 60 slide within the first arc slide rail 2 and the fourth arc slide rail 14, respectively. When the gear disk 13 rotates clockwise, the first circular slider 59, the second circular slider 60, and the third circular slider 61 will perform the following actions in chronological order: the third circular slider 61 enters the sixth arc slide rail 39, the first circular slider 59 enters the second arc slide rail 8, the second circular slider 60 enters the third arc slide rail 12, the second circular slider 60 enters the fourth arc slide rail 14, the first circular slider 59 enters the first arc slide rail 2, and the third circular slider 61 enters the fifth arc slide rail 38, thus completing one cycle. The above functions can be achieved by changing the position and length parameters between the first and second arc slide rails 2 and 8, between the third and fourth arc slide rails 12 and 14, and between the fifth and sixth arc slide rails 38.

[0043] The specific control process for the temporary water-stopping structure at the tunnel portal is as follows: A1. When the third slider 61 slides in the fifth arc slide 38, the first slider 59 and the second slider 60 slide in the first arc slide 2 and the fourth arc slide 14 respectively. At this time, the piston plate 50 in the first liquid storage tank 3, the second liquid storage tank 4 and the third liquid storage tank 5 does not move. A2. As the gear disk 13 rotates, the third slider 61 first enters the sixth arc slide 39. Since the first liquid storage tank 3 is located on the outside of the gear disk 13, and according to the diameter relationship of each arc slide, the third slider 61 acts on the connecting block 57. The connecting block 57 pushes the piston plate 50 to slide in the first liquid storage tank 3 through the control rod 48, so that the hydraulic oil in the first liquid storage tank 3 enters the two first hydraulic cylinders 25 through the second connecting pipe 33, thereby pushing the first extension rod 22 to extend outward. After the first extension rod 22 extends, the end plate 23 moves downward, and the positioning rod 24 is inserted downward into the bottom of the hole to fix the water-stopping structure. A3. Then the first slider 59 enters the second arc slide 8. Similarly, the hydraulic oil in the second liquid tank 4 will enter the two second hydraulic cylinders 26 through the first connecting pipe 29, thereby pushing the second extension rod 34 to extend outward. The second extension rod 34 pushes the support rod 43 to rotate, thereby causing the two expansion plates 45 to move away from each other, so that the strip-shaped airbag 10 can contact the inner walls on both sides of the inner door, thereby ensuring the sealing effect. A4. Then the second slider 60 enters the third arc slide 12. Similarly, the hydraulic oil in the third reservoir 5 will enter the two third hydraulic cylinders 30 through the third connecting pipe 62, thereby pushing the third extension rod 36 to extend outward. This causes the two bow-shaped connecting frames 32 to move closer to each other. At the same time, the two bow-shaped connecting frames 32 move the arc-shaped airbag 7 outward through the connecting component A and the support block 31 until the arc-shaped airbag 7 abuts against the top inner wall of the portal, and the limiting block 41 abuts against the limiting groove 40 set on the inner side of the upper end of the expansion plate 45 to achieve the limiting effect. A5. As the gear disk 13 continues to rotate, the second slider 60 enters the fourth arc slide 14. At this time, the piston plate 50 moves in the opposite direction, the hydraulic oil is drawn back into the third reservoir 5, the third extension rod 36 retracts, the two bow-shaped connecting frames 32 move away from each other, and the arc-shaped airbag 7 moves inward and retracts. A6. The first slider 59 enters the first arc slide 2. At this time, the piston plate 50 moves in the opposite direction, the hydraulic oil is drawn back into the second reservoir 4, the second extension rod 34 retracts, the support rod 43 rotates in the opposite direction, the two expansion plates 45 move towards each other, and the two strip-shaped airbags 10 move inward and retract. A7. The third slider 61 enters the fifth arc slide 38. At this time, the piston plate 50 moves in the opposite direction, the hydraulic oil is drawn back into the first reservoir 3, the first extension rod 22 retracts, the end plate 23 moves upward, and the positioning rod 24 is pulled out. This completes the disassembly of the water-stop structure. The sequence of extension and retraction of each extension rod can be realized through the setting of the control mechanism, so as to achieve automatic control.

[0044] A construction process for a temporary water-stopping structure at the portal of a water diversion tunnel includes the following steps: S1. Move the temporary water-stopping structure at the tunnel entrance to the tunnel entrance using transport and hoisting machinery; S2. The control mechanism controls the two expansion plates 45 to move away from each other, so that the two strip airbags 10 come into contact with the inner walls on both sides of the tunnel entrance. S3. The control mechanism controls the two bow-shaped connecting frames 32 to move closer to each other, so that the arc-shaped airbag 7 moves outward and contacts the inner wall of the top of the tunnel. At the same time, the two limiting blocks 41 are respectively inserted into the two limiting grooves 40.

Claims

1. A temporary water-stopping structure for the portal of a water diversion tunnel, characterized in that: The device includes a door body and a control mechanism. The top of the inner side of the door body is provided with a top gap sealing mechanism, the middle of the inner side of the door body is provided with a side gap sealing mechanism, and the bottom of the inner side of the door body is provided with a bottom gap sealing mechanism. The control mechanism is located on the back surface of the door body and is connected to the top gap sealing mechanism and the side gap sealing mechanism.

2. The temporary water-stopping structure for the portal of a water diversion tunnel as described in claim 1, characterized in that: The door body includes a first door panel (1) and a second door panel (11). The first door panel (1) and the second door panel (11) have the same shape and size. The lower part of the first door panel (1) and the second door panel (11) are both rectangular and the upper part is both semi-circular. The first door panel (1) and the second door panel (11) are provided with cavities on the side that is close to each other. A gap is left between the first door panel (1) and the second door panel (11). The cavity on the first door panel (1), the gap between the first door panel (1) and the second door panel (11) and the cavity on the second door panel (11) together form an installation cavity (65). The second door panel (11) is connected to the first door panel (1) by multiple connecting rods, and the connecting rods are located in the installation cavity (65). The second door panel (11) is located on the back side of the first door panel (1). Two horizontal plates (19) are fixedly arranged side by side on the back surface of the second door panel (11), and multiple vertical holes (18) are provided at equal intervals on the two horizontal plates (19).

3. The temporary water-stopping structure for the portal of a water diversion tunnel as described in claim 2, characterized in that: The top gap sealing mechanism includes an arc-shaped airbag (7) and an arc-shaped airbag push-pull component. The arc-shaped airbag (7) is located at the top of the gap between the first door panel (1) and the second door panel (11), and the center of the arc-shaped airbag (7) is concentric with the center of the upper part of the first door panel (1) and the second door panel (11). Both arc-shaped ends of the arc-shaped airbag (7) are provided with elastic blocks (9). One end of the elastic block (9) is fixedly provided with a limiting block (41), and the limiting block (41) is located in the mounting cavity (65). Multiple support blocks (31) are fixedly provided at equal intervals on the inner circular surface of the arc-shaped airbag (7). The arc-shaped airbag push-pull component is located in the mounting cavity (65). Each support block (31) is movably connected to the arc-shaped airbag push-pull component through two connecting components A.

4. The temporary water-stopping structure for the portal of a water diversion tunnel as described in claim 3, characterized in that: The arc-shaped airbag push-pull component includes two bow-shaped connecting frames (32), which are arranged side by side and concentrically. The center of the bow-shaped connecting frame (32) is concentric with the center of the upper part of the first door panel (1) and the second door panel (11). A third extension rod (36) is fixedly connected to the center of each of the two bow-shaped connecting frames (32) along the axial direction. A third hydraulic cylinder (30) is slidably connected to one end of the third extension rod (36) away from the bow-shaped connecting frame (32). The third hydraulic cylinder (30) on one of the third extension rods (36) is fixedly connected to the first door panel (1), and the third hydraulic cylinder (30) on the other third extension rod (36) is fixedly connected to the second door panel (11). Each support block (31) is movably connected to two bow-shaped connecting frames (32) via connecting component A.

5. The temporary water-stopping structure for the portal of a water diversion tunnel as described in claim 4, characterized in that: The connecting component A includes a connecting rod (47), one end of which is rotatably connected to the bow-shaped connecting frame (32) via a third rotating shaft (37), and the other end is rotatably connected to the support block (31) via the third rotating shaft (37); The outer circumferential edge of the arc-shaped airbag (7) is provided with an arc-shaped groove (46), and a sealing strip (6) is installed in the arc-shaped groove (46).

6. The temporary water-stopping structure for the portal of a water diversion tunnel as described in claim 2, characterized in that: The side gap sealing mechanism includes two strip-shaped airbags (10), which are respectively located at the left and right ends of the gap between the first door panel (1) and the second door panel (11). The two strip-shaped airbags (10) are connected by a strip-shaped airbag push-pull component, which is located in the mounting cavity (65).

7. The temporary water-stopping structure for the portal of a water diversion tunnel as described in claim 6, characterized in that: The strip-shaped airbag push-pull component includes a crossbeam (21), two expansion plates (45), two support rods (43), and two second hydraulic cylinders (26). The crossbeam (21) is located in the mounting cavity (65) and fixed on the first door panel (1). Two sliding grooves (63) are symmetrically opened on the crossbeam (21). The two expansion plates (45) are arranged side by side, and the two expansion plates (45) are slidably connected to the two sliding grooves (63) one by one through sliders. T-shaped sliding grooves are opened on the sides of the two expansion plates (45) that are close to each other, and limit grooves (40) are opened at the upper ends of the two expansion plates (45). The two support rods (43) are arranged crosswise, and the middle of the two support rods (43) is connected by the second hydraulic cylinder (26). The five pivots (44) are rotatably connected. The two ends of the support rod (43) are respectively rotatably connected to the T-shaped sliders (66) through the fourth pivot (42). The T-shaped sliders (66) at both ends of the support rod (43) are slidably connected to the T-shaped grooves on the two expansion plates (45). The two second hydraulic cylinders (26) are fixedly provided with fixing blocks (27). The fixing blocks (27) are rotatably connected to the first door panel (1) through the first pivot (28). The inner sides of the two second hydraulic cylinders (26) are slidably connected with second extension rods (34). The second extension rods (34) on the two second hydraulic cylinders (26) are respectively rotatably connected to the upper part of the two support rods (43) through the second pivot (35). The two strip-shaped airbags (10) are respectively placed on the two expansion plates (45), and the two expansion plates (45) are located between the two strip-shaped airbags (10).

8. The temporary water-stopping structure for the portal of a water diversion tunnel as described in claim 7, characterized in that: The bottom of the crossbeam (21) is provided with two first hydraulic cylinders (25) arranged in parallel and perpendicular to it. Both first hydraulic cylinders (25) are connected to the control mechanism. The inner side of both first hydraulic cylinders (25) is slidably connected with a first extension rod (22). The lower ends of the two first extension rods (22) are connected to an end plate (23). The bottom of the end plate (23) is provided with multiple positioning rods (24) at equal intervals, and the lower end of the positioning rods (24) is conical.

9. The temporary water-stopping structure for the portal of a water diversion tunnel as described in claim 2, characterized in that: The bottom gap sealing mechanism includes an mounting block (49) and a sealing gasket (20). The mounting block (49) is fixedly installed in the lower part of the cavity of the second door panel (11), and a groove (55) is provided at the bottom of the mounting block (49). The sealing gasket (20) is located in the groove (55), and the shape and size of the sealing gasket (20) are adapted to the shape and size of the groove (55). Multiple strip grooves (56) are provided at equal intervals at the bottom of the sealing gasket (20), and multiple guide rods (53) are arranged side by side at the top. The guide rods (53) pass through the mounting block (49) and are slidably connected with the mounting block (49). A limiting block (52) is provided on the upper side of the mounting block (49) on the guide rod (53). An installation groove (51) is provided at the bottom of the mounting block (49) at a position corresponding to the guide rod (53). A spring (54) is fitted between the bottom surface of the installation groove (51) and the sealing gasket (20) on the guide rod (53).

10. The temporary water-stopping structure for the portal of a water diversion tunnel as described in claim 8, characterized in that: The control mechanism includes a drive motor (16), a gear disk (13), a first liquid storage tank (3), a second liquid storage tank (4), and a third liquid storage tank (5). The drive motor (16) is mounted on the second door panel (11) via a mounting base (17), and a drive gear (15) is mounted on the output shaft of the drive motor (16). A slip ring (58) is coaxially mounted on the gear disk (13), and the slip ring (58) is rotatably connected to the second door panel (11). The gear disk (13) meshes with the drive gear (15). The back surface of the gear disk (13) is provided with, from the inside to the outside, a series of... The third guide groove, the first guide groove, and the second guide groove are provided, and the first guide groove, the second guide groove, and the third guide groove are respectively provided with a first circular slider (59), a second circular slider (60), and a third circular slider (61). The first liquid storage tank (3), the second liquid storage tank (4), and the third liquid storage tank (5) are all located on the second door panel (11), and the first liquid storage tank (3), the second liquid storage tank (4), and the third liquid storage tank (5) are all provided with a piston plate (50). A control rod (48) is fixedly provided on the piston plate (50). The control rod (48) and the piston are connected. The plate (50) is arranged vertically and penetrates the side wall of the first liquid storage tank (3), the second liquid storage tank (4), or the third liquid storage tank (5). A connecting block (57) is provided on the end of the control rod (48) away from the piston plate (50). The connecting block (57) on the control rod (48) connected to the piston plate (50) in the first liquid storage tank (3) is rotatably connected to the third circular slider (61). The connecting block (57) on the control rod (48) connected to the piston plate (50) in the second liquid storage tank (4) is rotatably connected to the first circular slider (59). The connecting block (57) on the control rod (48) connected to the inner piston plate (50) is rotatably connected to the second circular slider (60). The rodless chambers of the first liquid tank (3), the second liquid tank (4) and the third liquid tank (5) are all filled with hydraulic oil. The rodless chamber of the first liquid tank (3) is connected to the two first hydraulic cylinders (25) through the second connecting pipe (33). The rodless chamber of the second liquid tank (4) is connected to the side gap sealing mechanism through the first connecting pipe (29). The rodless chamber of the third liquid tank (5) is connected to the top gap sealing mechanism through the third connecting pipe (62). The first guide groove includes a first arc slide (2) and a second arc slide (8). The two ends of the second arc slide (8) are smoothly connected to the two ends of the first arc slide (2) one by one through a transition slide (64). The second guide groove includes a third arc slide (12) and a fourth arc slide (14). The two ends of the fourth arc slide (14) are smoothly connected to the two ends of the third arc slide (12) one by one through a transition slide (64). The third guide groove includes a fifth arc slide (38) and a sixth arc slide (39). The two ends of the sixth arc slide (39) are smoothly connected to the two ends of the fifth arc slide (38) through a transition slide (64). The first arc slide (2), the second arc slide (8), the third arc slide (12), the fourth arc slide (14), the fifth arc slide (38) and the sixth arc slide (39) are all arranged concentrically with the gear disk (13), and the diameter of the fifth arc slide (38) is < the diameter of the sixth arc slide (39) < the diameter of the first arc slide (2) < the diameter of the second arc slide (8) < the diameter of the fourth arc slide (14) < the diameter of the third arc slide (12); In the initial state, when the third circular slider (61) slides in the fifth circular slide (38), the first circular slider (59) and the second circular slider (60) slide in the first circular slide (2) and the fourth circular slide (14) respectively. When the gear disk (13) rotates clockwise, the first circular slider (59), the second circular slider (60) and the third circular slider (61) will perform the following actions in chronological order: the third circular slider (61) enters the sixth circular slide (39), the first circular slider (59) enters the second circular slide (8), the second circular slider (60) enters the third circular slide (12), the second circular slider (60) enters the fourth circular slide (14), the first circular slider (59) enters the first circular slide (2), and the third circular slider (61) enters the fifth circular slide (38), thus completing one cycle.

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