A vertical jacking and ground-breaking device and construction method

Abstract

The present application discloses a vertical jacking and soil-breaking device, which relates to the field of tunnel drainage pipeline construction technology. It includes a soffit plate, and flushing holes and sludge discharge holes are provided on the soffit plate. The soffit plate includes an outer ring and an inner plate. The inner plate is coaxially and rotatably connected to the inner side of the outer ring. The flushing holes are opened on the inner plate, and a driving component for driving the inner plate to rotate is provided between the outer ring and the inner plate. The present application has the effects of improving the jacking speed of the soffit plate, enhancing the jacking capacity of the vertical jacking and soil-breaking device, and improving the construction efficiency of jacking and soil-breaking.

Description

Technical Field

[0001] This application relates to the field of tunnel water intake and drainage pipeline construction technology, and in particular to a vertical jacking soil-breaking device and construction method. Background Technique

[0002] With the further development of nuclear power construction in China in recent years, some coastal nuclear power plants have begun to use shield tunnel water intake and drainage to replace the traditional open channel water intake and drainage design. Compared with thermal power plants, due to their large water intake, the tunnel diameter increases, and the corresponding vertical jacking riser and water intake size also increase accordingly.

[0003] In the related technology, the commonly used vertical jacking method is the closed top method. A conical closed top is coaxially arranged on the first section of the riser, and a flushing hole and a mud discharge hole are vertically penetrated through the closed top. During the construction process, the first section of the riser and the closed top are jacked up by a jack, and high-pressure water is impacted on the soil above the closed top through a flushing pipe, so that the soil above the closed top disintegrates; then, the disintegrated soil and water are mixed to form muddy water and discharged through the mud outlet. When the first section of the riser and the closed top are jacked up to a corresponding height, another riser is installed on the lower side of the first section of the riser, and then the jack continues to jack up the closed top, and subsequent risers are installed as the closed top rises until the closed top penetrates to the ground surface.

[0004] However, the closed top needs to overcome the end resistance at the top of the riser and the side resistance on the side, and their magnitudes both increase with the increase of the riser diameter. Especially the end resistance, its magnitude is proportional to the square of the riser diameter. When constructing a water intake and drainage pipeline with a larger diameter by the above method, the diameter of the riser and the closed top is larger, the overall jacking resistance of the closed top is larger, the jacking speed is slower, and the jacking ability of the closed top is weaker, and the construction efficiency is lower, which needs to be improved. Summary of the Invention

[0005] In order to improve the problem of low construction efficiency when constructing a water intake and drainage pipeline with a larger diameter by using the closed top method in the related technology, this application provides a vertical jacking soil-breaking device and construction method.

[0006] In the first aspect, a vertical jacking soil-breaking device provided by this application adopts the following technical solution:

[0007] A vertical jacking soil-breaking device includes a closed top plate, and a flushing hole and a mud discharge hole are arranged on the closed top plate. The closed top plate includes an outer ring and an inner plate. The inner plate is coaxially and rotatably connected to the inside of the outer ring. The flushing hole is opened on the inner plate, and a driving component for driving the inner plate to rotate is arranged between the outer ring and the inner plate.

[0008] By adopting the above technical solution, during upward earth-breaking operation, the outer ring of the soffit plate can be fixed to the first vertical pipe, and then the first vertical pipe and the soffit plate are jacked up by a jack; meanwhile, high-pressure water is supplied to the flushing holes, and the high-pressure water will impact the soil on the upper side of the soffit plate, causing the soil on the upper side of the soffit plate to disintegrate. And the inner plate is driven by a driving component to rotate, expanding the impact area of the high-pressure water on the soil and reducing the resistance of the soil to the soffit plate; then, the disintegrated soil and water liquid are discharged through the mud discharge holes. In this way, it helps to improve the jacking speed of the soffit plate, enhance the jacking capacity of the vertical jacking earth-breaking device, and improve the construction efficiency of jacking earth-breaking.

[0009] Preferably, the driving component includes an oil cylinder, the cylinder body of the oil cylinder is hinged to the lower side of the outer ring, and the end of the piston rod of the oil cylinder is hinged to the lower side of the inner plate.

[0010] By adopting the above technical solution, the inner plate is driven by the oil cylinder to reciprocate and rotate on the outer ring, realizing the automatic driving operation of the inner plate, and the oil cylinder can provide a large thrust and pulling force, which helps to ensure the normal rotation of the inner plate in contact with the soil.

[0011] Preferably, a flushing water pipe is fixedly arranged on the lower side of the inner plate, the flushing water pipe is communicated with the lower port of the flushing hole, and a one-way valve for preventing the backflow of water liquid is arranged on the flushing water pipe.

[0012] By adopting the above technical solution, in actual operation, the space between the soffit plate and the soil layer above it will be filled with water liquid, and the one-way valve prevents the backflow of water liquid, which helps to ensure the normal progress of the jacking operation.

[0013] Preferably, an installation ring groove is opened from top to bottom on the inner side of the outer ring, and the inner plate is embedded in the installation ring groove.

[0014] By adopting the above technical solution, embedding the inner plate in the installation ring groove helps to ensure the stability of the rotation of the inner plate.

[0015] Preferably, a sealing ring is coaxially arranged in the installation ring groove, and the outer wall of the inner plate and the side wall of the installation ring groove are in tight contact with the sealing ring;

[0016] A stabilizing ring groove is axially formed on the outer wall of the inner plate around the axis of the inner plate, and the sealing ring is embedded in the stabilizing ring groove.

[0017] By adopting the above technical solution, since the sealing ring seals between the outer ring and the inner plate, it helps to reduce the leakage of water liquid from between the outer plate and the inner plate to the lower side of the soffit plate.

[0018] Preferably, a plain bearing is arranged between the inner plate and the bottom wall of the installation ring groove.

[0019] By adopting the above technical solution, it helps to ensure the smoothness and stability of the rotation of the inner plate on the outer ring.

[0020] Preferably, a rotating pipe is arranged on the inner disk. The rotating pipe penetrates through the flushing hole and is rotatably connected to the inner disk. The upper end of the rotating pipe is fixed and communicated with a swinging pipe. The axis of the swinging pipe intersects with the axis of the rotating pipe. A driving structure for driving the rotating pipe to rotate is further arranged on the soffit plate.

[0021] By adopting the above technical solution, the driving structure drives the rotating pipe and the swinging pipe to rotate, further expanding the impact area on the upper soil of the soffit plate and reducing the resistance of the soil to the soffit plate.

[0022] Preferably, the driving structure includes an arc-shaped rack and a driven gear. The arc-shaped rack is fixed to the lower side of the outer ring. The center of curvature of the arc-shaped rack is on the axis of the inner disk. The lower end of the rotating pipe coaxially penetrates through the driven gear and is fixed to the driven gear, and the driven gear meshes with the arc-shaped rack.

[0023] By adopting the above technical solution, during the rotation of the outer ring, under the cooperation of the arc-shaped rack and the driven gear, the rotating pipe and the swinging pipe will rotate synchronously, realizing the automatic driving of the rotating pipe, and the structure is simple and the driving of the rotating pipe is convenient.

[0024] Preferably, a receiving groove is formed on the upper side surface of the inner disk, and the swinging pipe is located in the receiving groove;

[0025] A communication groove is formed on the upper side surface of the inner disk between the receiving groove and the sludge discharge hole. The communication groove communicates the receiving groove and the sludge discharge hole.

[0026] By adopting the above technical solution, on the one hand, the swinging pipe is placed in the receiving groove to reduce the occurrence of the swinging pipe touching the soil and being damaged; on the other hand, a communication groove is arranged between the receiving groove and the sludge discharge hole. Since the swinging pipe is in the receiving groove and the water pressure at the receiving groove is relatively high, after the muddy water enters the receiving groove, it can flow toward the sludge discharge hole through the communication groove, reducing the occurrence of soil accumulation in the receiving groove and helping to ensure the normal rotation of the swinging pipe.

[0027] Secondly, the present application provides a construction method for vertical jacking and breaking soil, adopting the following technical solution:

[0028] A construction method for vertical jacking and breaking soil includes the following steps:

[0029] Preparation work: Install the soffit plate on the upper end of the first vertical pipe. The soffit plate includes an outer ring and an inner disk rotatably connected to the inner side of the outer ring. A flushing hole and a sludge discharge hole are vertically penetrated through the inner disk;

[0030] Jacking and breaking soil: Jack up the soffit plate and rotate the inner disk. At the same time, spray water liquid to the upper soil of the soffit plate through the flushing hole to break the upper soil of the soffit plate. The broken soil and water liquid are mixed and discharged through the sludge discharge hole.

[0031] By adopting the above technical solution, it helps to improve the jacking speed of the ceiling plate and enhance the construction efficiency of jacking and breaking the soil.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. By driving the inner plate to rotate through the driving component, it helps to improve the jacking speed of the ceiling plate, enhance the jacking ability of the vertical jacking and soil-breaking device, and improve the construction efficiency of jacking and breaking the soil;

[0034] 2. By embedding the inner plate into the installation ring groove and arranging a plain bearing between the inner plate and the bottom wall of the installation ring groove, the rotation stability of the inner plate is greatly improved. Description of the Drawings

[0035] Figure 1 An isometric schematic diagram mainly showing the overall structure of the vertical jacking and soil-breaking device in Embodiment 1;

[0036] Figure 2 A schematic diagram mainly showing the structure of the driving component and the installation ring pipe in Embodiment 1;

[0037] Figure 3 A schematic diagram mainly showing the structure of the installation ring groove and the sealing ring in Embodiment 1;

[0038] Figure 4 For Figure 3 An enlarged view of part A, mainly showing the structure of the stable ring groove;

[0039] Figure 5 A schematic diagram mainly showing the structure of the vertical jacking and soil-breaking device in Embodiment 2;

[0040] Figure 6 A schematic diagram mainly showing the driving structure in Embodiment 2.

[0041] Reference numerals: 1, ceiling plate; 11, outer ring; 111, installation ring groove; 12, inner plate; 121, flushing hole; 122, mud discharge hole; 123, avoidance groove; 124, stable ring groove; 125, sealing ring; 126, accommodation groove; 127, communication groove; 2, driving component; 21, oil cylinder; 3, plain bearing; 4, flushing pipe; 41, check valve; 5, installation ring pipe; 51, connecting ring edge; 6, rotating pipe; 61, swing pipe; 7, driving structure; 71, arc rack; 72, driven gear; 8, fixed bracket; 100, first vertical pipe. Detailed Description of the Embodiment

[0042] The following further describes the present application in detail with reference to the drawings.

[0043] The embodiment of the present application discloses a vertical jacking and soil-breaking device and a construction method.

[0044] Example 1:

[0045] Referring to Figure 1 and Figure 2 , the vertical jacking and soil-breaking device includes a soffit plate 1. The soffit plate 1 is generally conical, and the apex of the cone of the soffit plate 1 is arranged upward. The soffit plate 1 includes an outer ring 11 and an inner plate 12. An installation ring groove 111 is formed on the inner side of the outer ring 11. The inner plate 12 is embedded in the installation ring groove 111 and rotatably connected to the outer ring 11. A driving component 2 for driving the inner plate 12 to rotate is arranged on the lower side of the outer ring 11. A flushing hole 121 and a mud discharge hole 122 are vertically and penetratingly formed on the inner plate 12. During actual construction, the outer ring 11 can be fixed to the first vertical pipe 100, and the soffit plate 1 is jacked up by a jacking device such as a jack. At the same time, the inner plate 12 is driven to rotate by the driving component 2. High-pressure water impacts the upper soil through the flushing hole 121, and the disintegrated soil will be discharged through the mud discharge hole 122 along with the water liquid, so as to realize rapid soil-breaking operation.

[0046] Specifically, referring to Figure 3 and Figure 4 , the installation ring groove 111 is coaxial with the outer ring 11. The installation ring groove 111 is stepped and the stepped surface of the installation ring groove 111 faces upward. An avoidance groove 123 is formed on the lower side of the circumferential side wall of the inner plate 12. The circumferential side wall of the inner plate 12 is stepped and the stepped surface faces downward. The stepped surface of the inner plate 12 and the stepped surface of the installation ring groove 111 are arranged oppositely. A plain bearing 3 is arranged in contact between the stepped surface of the inner plate 12 and the installation ring groove 111. The axis of the plain bearing 3 is collinear with the axis of the inner plate 12. Moreover, a stabilizing ring groove 124 is formed on the circumferential side wall of the inner plate 12 around the axis of the inner plate 12. A sealing ring 125 is embedded in the stabilizing ring groove 124. The outer side of the sealing ring 125 abuts against the side wall of the installation ring groove 111. And one stabilizing ring groove 124 is arranged on each of the upper and lower sides of the circumferential side wall of the inner plate 12. The sealing rings 125 correspond to the stabilizing ring grooves 124 one by one.

[0047] A flushing pipe 4 is fixed to the lower side of the inner plate 12. One end of the flushing pipe 4 faces upward and is communicated with the flushing hole 121. A one-way valve 41 is arranged on the flushing pipe 4 to prevent the water liquid from flowing back from the upper side of the soffit plate 1 to the flushing pipe 4. The flushing hole 121 is located at the edge position of the inner plate 12, and a plurality of flushing holes 121 are evenly spaced around the axis of the inner plate 12. In this embodiment, the number of flushing holes 121 is preferably four. The flushing pipe 4 and the one-way valve 41 both correspond to the flushing holes 121 one by one. Moreover, the mud discharge hole 122 is located in the middle of the inner plate 12. During actual construction, the lower end of the flushing pipe 4 is communicated with a water supply device, and the water supply device can be a water pump. The mud discharge hole 122 is communicated with a pipeline to lead the muddy water to a safe position.

[0048] Next, referring to Figure 3, the driving component 2 includes an oil cylinder 21. The cylinder block of the oil cylinder 21 is hinged to the lower side of the outer ring 11, and the end of the piston rod of the oil cylinder 21 is hinged to the edge position of the inner disc 12. The hinge position between the inner disc 12 and the piston rod of the oil cylinder 21 is located between two adjacent flushing holes 121, and one oil cylinder 21 is provided on each of the opposite sides of the inner disc 12.

[0049] For the convenience of installing the soffit plate 1, an installation ring pipe 5 is coaxially arranged on the lower side of the outer ring 11. The upper side of the installation ring pipe 5 is fixedly welded to the circumferential edge of the outer ring 11, and a connecting ring edge 51 for fixedly connecting the first vertical pipe 100 is arranged inward on the lower side of the installation ring pipe 5.

[0050] The implementation principle of a vertical jacking and soil-breaking device in an embodiment of the present application is as follows: During the upward soil-breaking operation, the outer ring 11 of the soffit plate 1 can be fixed to the first vertical pipe 100, and then the first vertical pipe 100 and the soffit plate 1 are jacked up by a jacking device such as a jack; meanwhile, high-pressure water is supplied to the flushing holes 121 through the flushing water pipe 4. The high-pressure water will impact the soil on the upper side of the soffit plate 1 and cause the soil on the upper side of the soffit plate 1 to disintegrate. The inner disc 12 is driven by two oil cylinders 21 to rotate, expanding the impact area on the soil and reducing the resistance of the soil to the soffit plate 1; then, the disintegrated soil and the water liquid are discharged through the sludge discharge holes 122, so as to gradually break the soil on the upper side of the soffit plate 1.

[0051] The embodiment of the present application also discloses a construction method for vertical jacking and soil-breaking, including the following steps:

[0052] S1. Preparation work: Install the connecting ring edge 51 on the upper end of the first vertical pipe 100 through bolts;

[0053] S2. Jacking and soil-breaking: Use a jacking device such as a jack to jack up the first vertical pipe 100 and the soffit plate 1, and drive the inner disc 12 to rotate by two oil cylinders 21. At the same time, water is supplied to the flushing water pipe 4, and high-pressure water liquid is sprayed onto the soil on the upper side of the soffit plate 1 through the flushing holes 121 to break the soil on the upper side of the soffit plate 1; then, the broken soil and the water liquid are mixed and discharged through the sludge discharge holes 122, so as to gradually break the soil on the upper side of the soffit plate 1 until the jacking and soil-breaking operation is completed.

[0054] Embodiment Two:

[0055] Refer to Figure 5 and Figure 6, The difference between this embodiment and the first embodiment is that a rotating pipe 6 is provided on the inner disk 12. The rotating pipe 6 passes through the flushing hole 121 and is rotatably connected to the inner disk 12. An accommodating groove 126 is formed in the upper side position of the inner disk 12 at the flushing hole 121. A swing pipe 61 is arranged in the accommodating groove 126. One end of the swing pipe 61 is fixedly connected and communicated with the upper end of the rotating pipe 6, and the axis of the swing pipe 61 intersects with the axis of the rotating pipe 6. The upper end of the swing pipe 61 is not higher than the notch of the accommodating groove 126. Moreover, a driving structure 7 for driving the rotation of the rotating pipe 6 is arranged between the outer ring 11 and the inner disk 12. In actual construction, while the inner disk 12 rotates, the driving structure 7 will drive the rotating pipe 6 and the swing pipe 61 to rotate, thereby expanding the high-pressure water impact area on the soil.

[0056] Specifically, the lower end of the rotating pipe 6 is rotatably connected and communicated with the upper end of the flushing pipe 4 through a rotating joint. The flushing pipe 4 is fixed to the inner disk 12 through a fixing bracket 8. A communication groove 127 is formed in the upper side surface of the inner disk 12 between the accommodating groove 126 and the sludge discharge hole 122. The communication groove 127 communicates the accommodating groove 126 and the sludge discharge hole 122.

[0057] The oil cylinder 21 is arranged at an interval from the outer ring 11. The driving structure 7 includes an arc-shaped rack 71 and a driven gear 72. The arc-shaped rack 71 is fixed to the lower side of the outer ring 11. The center of curvature of the arc-shaped rack 71 is on the axis of the inner disk 12. The lower end of the rotating pipe 6 coaxially penetrates through the driven gear 72 and is fixed to the driven gear 72, and the driven gear 72 meshes with the arc-shaped rack 71. Moreover, the rotating pipe 6, the driving structure 7, and the communication groove 127 all correspond to the flushing holes 121 one by one. The fixing bracket 8 corresponds to the flushing pipe 4 one by one, and the four arc-shaped racks 71 are connected end to end in pairs. In actual construction, while the inner disk 12 rotates, the driven gear 72 moves relative to the arc-shaped rack 71. The driven gear 72 will rotate and drive the rotating pipe 6 and the swing pipe 61 to rotate. The high-pressure water sprayed out through the swing pipe 61 will impact and break the soil in a large range.

[0058] The second embodiment of the present application also discloses a construction method for vertical jacking and soil breaking, including the following steps:

[0059] S1. Preparation work, installing the connecting ring edge 51 on the upper end of the first vertical pipe 100 through bolts;

[0060] S2. Jack up and break the soil. Use jacking equipment such as jacks to jack up the first riser 100 and the ceiling plate 1, and drive the inner plate 12 to rotate by two oil cylinders 21. At this time, under the cooperation of the arc-shaped rack 71 and the driven gear 72, the rotating pipe 6 and the swing pipe 61 will rotate; then, supply high-pressure water liquid to the flushing pipe 4 through the water supply equipment, and the high-pressure water liquid is sprayed onto the soil on the upper side of the ceiling plate 1 through the rotating rotating pipe 6 and the swing pipe 61 to break the soil on the upper side of the ceiling plate 1; then, the broken soil and water liquid are mixed and discharged through the mud discharge hole 122. Thus, the soil on the upper side of the ceiling plate 1 is gradually broken until the jacking and soil-breaking operation is completed.

[0061] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A vertical jacking soil-breaking device, comprising a soffit plate (1), wherein a flushing hole (121) and a sludge discharge hole (122) are arranged on the soffit plate (1), and it is characterized in that: The top plate (1) comprises an outer ring (11) and an inner plate (12), the inner plate (12) being coaxially rotatably connected to the inner side of the outer ring (11), the flushing hole (121) being provided on the inner plate (12), and a driving component (2) for driving the inner plate (12) to rotate is provided between the outer ring (11) and the inner plate (12); The driving component (2) comprises an oil cylinder (21), the cylinder body of the oil cylinder (21) is hinged to the lower side of the outer ring (11), and the end of the piston rod of the oil cylinder (21) is hinged to the lower side of the inner disk (12); The inner side of the outer ring (11) is provided with a mounting ring groove (111) from top to bottom, and the inner disk (12) is embedded in the mounting ring groove (111); The inner plate (12) is provided with a rotating tube (6), the rotating tube (6) is provided with a flushing hole (121) and is rotatably connected to the inner plate (12), the upper end of the rotating tube (6) is fixed and connected to a swing tube (61), the axis of the swing tube (61) intersects with the axis of the rotating tube (6), and the top plate (1) is also provided with a driving structure (7) for driving the rotating tube (6) to rotate; The driving structure (7) comprises an arc-shaped rack (71) and a driven gear (72), wherein the arc-shaped rack (71) is fixed to the lower side of the outer ring (11), the curvature center of the arc-shaped rack (71) is on the axis of the inner disk (12), the lower end of the rotating tube (6) coaxially passes through the driven gear (72) and is fixed to the driven gear (72), and the driven gear (72) is meshed with the arc-shaped rack (71); The upper side surface of the inner plate (12) is provided with a receiving groove (126), and the swing pipe (61) is located in the receiving groove (126); A communication groove (127) is provided on the upper side of the inner plate (12) between the accommodating groove (126) and the mud discharge hole (122), and the communication groove (127) is connected with the accommodating groove (126) and the mud discharge hole (122).

2. The vertical jacking and ground-breaking device according to claim 1, characterized in that: A flushing pipe (4) is fixedly arranged on the lower side of the inner plate (12), the flushing pipe (4) is in communication with the lower end of the flushing hole (121), and a one-way valve (41) for preventing backflow of water is arranged on the flushing pipe (4).

3. A vertical lifting earth-breaking device according to claim 1, characterized in that: A sealing ring (125) is coaxially arranged in the mounting ring groove (111), and the outer wall of the inner disk (12) and the side wall of the mounting ring groove (111) are tightly pressed against the sealing ring (125); The outer wall of the inner disk (12) is provided with a stabilizing annular groove (124) axially around the inner disk (12), and the sealing ring (125) is embedded in the stabilizing annular groove (124).

4. The vertical jacking and ground-breaking device according to claim 1, characterized in that: A plane bearing (3) is provided between the inner disk (12) and the bottom wall of the mounting ring groove (111).

5. A construction method for vertical jacking and breaking ground, characterized in that: A vertical lifting earth-breaking device according to any one of claims 1 to 4 is used, comprising the following steps: Preparation work: installing a top plate (1) on the upper end of the first section of the riser (100), wherein the top plate (1) comprises an outer ring (11) and an inner plate (12) rotatably connected to the inner side of the outer ring (11), and the inner plate (12) is vertically penetrated with a flushing hole (121) and a mud discharge hole (122); Lift and break the soil, lift the soffit plate (1), and rotate the inner plate (12). At the same time, spray water liquid onto the soil on the upper side of the soffit plate (1) through the water injection holes (121) to break the soil on the upper side of the soffit plate (1). The broken soil and water liquid are mixed and discharged through the mud discharge holes (122).

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