Pipe jacking construction deformation control device and method

Abstract

The invention discloses a pipe-jacking construction deformation control device and method.The pipe-jacking construction deformation control device comprises a bottom mounting groove frame and further comprises a fixing sleeve, a sleeve type driving structure, a slurry discharging pipeline and a funnel detection structure, and the top of the bottom mounting groove frame is slidably connected with a lifting groove frame; a position adjusting structure is arranged between the fixed sleeve and the lifting groove frame, an abutting face abutting against the stratum is arranged on one side of the fixed sleeve, a sleeve type driving structure is arranged in the fixed sleeve and drives a pipeline to be jacked into the stratum and discharge slurry, and the bottom of the fixed sleeve and the bottom of the sleeve type driving structure communicate with a slurry discharging pipeline. A pipeline moving structure for adjusting the position of the discharge end of the slurry discharge pipeline is arranged on the bottom mounting groove frame, and a funnel detection structure is arranged between the bottom mounting groove frame and the slurry discharge pipeline. The method is used for solving the problem that in the prior art, stratum deformation in the pipe jacking construction process cannot be pre-judged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe jacking construction preparation, and particularly relates to a pipe jacking construction deformation control device and method. BACKGROUND

[0002] Pipe jacking construction refers to a non-excavation or less excavation underground pipeline construction method, in which a pipe jacking machine is used in cooperation with a hydraulic machine head to drive the hydraulic machine head and the pipeline to jacking into the stratum by using the jacking thrust of the pipe jacking machine, and then the pipeline is made to enter the stratum along the designed slope, and the earthwork in the pipe jacking construction process is removed from the borehole by means of water injection, and finally the hydraulic joint and the pipeline are exposed from the stratum, and the pipeline laying between point A and point B is completed.

[0003] In the prior art, the pipe jacking construction technology can be used to complete the pipeline laying operation without damaging the urban buildings and affecting the urban traffic, but in the pipe jacking construction process, the original stress balance in the stratum is sometimes broken during the jacking of the machine head and the pipeline into the stratum, which causes the phenomenon of ground subsidence or uplift, and affects the stability of the pipe jacking construction process and the subsequent application of the pipeline.

[0004] In the prior art, when the pipe jacking construction technology is implemented, only the jacking depth, jacking moving angle and jacking distance of the pipeline are detected, but there is a lack of effective prediction of the stratum deformation in the pipe jacking construction process, and if the control is performed after the stratum has already deformed, the control opportunity for the stratum deformation problem is easily missed. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present application provides a pipe jacking construction deformation control device and method to solve the problem of lack of prediction of stratum deformation in the pipe jacking construction process in the background art.

[0007] (II) Technical solutions

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a pipe jacking construction deformation control device, comprising a bottom mounting slot frame, further comprising:

[0009] A fixing sleeve is slidably connected to the top of the bottom mounting slot frame, a position adjusting structure is arranged between the fixing sleeve and the lifting slot frame, and an abutting surface abutting against the stratum is arranged on one side of the fixing sleeve;

[0010] A sleeve type driving structure is arranged in the fixing sleeve to drive the pipeline to jacking into the stratum and discharge the mud;

[0011] A mud discharge pipeline is communicated with the bottom of the fixed sleeve and the sleeve driving structure, and a pipeline moving structure for adjusting the position of the discharge end of the mud discharge pipeline is arranged on the bottom mounting slot frame.

[0012] A funnel detection structure is arranged between the bottom mounting slot frame and the mud discharge pipeline to detect the discharged mud and predict the formation deformation problem.

[0013] In order to adjust the position of the fixed sleeve, further, the position adjusting structure comprises a rotating shaft seat and a second driving cylinder, the rotating shaft seat is longitudinally slidably arranged on the lifting slot frame, the bottom of the lifting slot frame is provided with a first driving cylinder for driving the longitudinal movement of the rotating shaft seat, the second driving cylinder is arranged on the lifting slot frame to drive the fixed sleeve to deviate from the center point of the rotating shaft seat, and the output end of the second driving cylinder is connected with the fixed sleeve.

[0014] In order to abut the fixed sleeve against the formation jacking end face, further, a friction ring sleeve is arranged on the abutting face of the fixed sleeve for abutting the fixed sleeve against the formation jacking end face.

[0015] In order to drive the pipeline to jacking into the formation and discharge mud, further, the sleeve driving structure comprises a driving sleeve, a liquid outlet notch and an arc-shaped threaded plate, the driving sleeve is rotatably arranged in the fixed sleeve through a rotating support assembly, the side of the driving sleeve close to the friction ring sleeve is provided with a conical spiral cylinder seat, the other side of the driving sleeve opposite to the conical spiral cylinder seat is provided with an annular mounting frame, a plurality of liquid outlet notches are arranged in the middle part of the circumference of the driving sleeve, the number of the arc-shaped threaded plates is multiple, the plurality of arc-shaped threaded plates are circumferentially slidably arranged in the annular mounting frame, and the outer arc surface of the arc-shaped threaded plate and the inner wall of the annular mounting frame are provided with spring dampers.

[0016] In order to fix the driving sleeve and discharge mud, further, the rotating support assembly comprises a rotating ring and an arc-shaped support seat, two rotating rings are fixedly arranged in the middle part of the driving sleeve, an annular sealing plate is rotatably arranged between the two rotating rings, arc-shaped grooves are arranged on both sides of the arc-shaped support seat, the rotating ring is slidably connected in the arc-shaped groove, the annular sealing plate is fixedly connected in the middle part of the arc-shaped support seat, a liquid discharge notch is communicated between the annular sealing plate, the arc-shaped support seat and the bottom of the fixed sleeve, and the liquid discharge notch is communicated with the mud discharge pipeline.

[0017] In order to move the discharge end of the mud discharge pipeline, further, the pipeline moving structure comprises a fixed support, a fixed ring sleeve and a mounting support, the fixed support is fixedly connected on the bottom installation groove frame, a slope sliding frame is fixedly connected on the fixed support, the bottom of the mud discharge pipeline is provided with the fixed ring sleeve, the fixed ring sleeve is slidably connected with the slope sliding frame through a sliding rod, the mounting support is fixedly connected on the top of the slope sliding frame, and a third electric cylinder is arranged between the top of the mounting support and the top of the fixed ring sleeve.

[0018] In order to detect the water and soil ratio in the mud, further, the funnel detection structure comprises a detection funnel, an annular sieve plate, a weighing table and a bottom sealing assembly, the detection funnel is fixedly connected on the bottom installation groove frame, an annular frame is rotatably arranged on the top of the detection funnel, the annular sieve plate is arranged in the annular frame, the weighing table is arranged on the bottom of the detection funnel, a collection groove is arranged on the weighing table, and the bottom of the detection funnel is provided with the bottom sealing assembly for temporarily sealing the detection funnel.

[0019] In order to temporarily seal the bottom of the detection funnel, further, the bottom sealing assembly comprises a sealing seat and an electromagnetic element, the sealing seat is arranged through the bottom of the detection funnel, an L-shaped support rod is fixedly connected on the bottom of the sealing seat, the electromagnetic element is arranged on the side wall of the detection funnel, the top of the L-shaped support rod is slidably arranged on the electromagnetic element, a ferrous ring sleeve is arranged on the L-shaped support rod, and the ferrous ring sleeve is magnetically connected with the electromagnetic element.

[0020] In order to quickly observe the silt content in the mud, further, the mud discharge pipeline is a visible pipeline, and a plurality of arc-shaped retention pieces are arranged in the mud discharge pipeline.

[0021] A pipe jacking construction deformation control method uses the pipe jacking construction deformation control device, and comprises the following steps:

[0022] Step one, moving device: first, the bottom installation groove frame is movably arranged between the pipe jacking device and the stratum jacking end surface, the fixed sleeve is corresponded with the pipe jacking direction and angle, and the friction ring sleeve is in contact with the stratum jacking end surface;

[0023] Step two, pipe jacking: the pipeline is jacked into the stratum from the driving sleeve, the threaded section composed of the plurality of arc-shaped threaded plates is cooperated with the pipe jacking device in the driving sleeve rotation process, and drives the pipeline to be jacked into the stratum;

[0024] Step three, liquid discharge: in the pipeline jacking process, the mud in the borehole is discharged into the driving sleeve, the mud falls into the conical spiral cylinder seat, and finally is discharged into the mud discharge pipeline through the liquid discharge slot and is discharged into the mud pool.

[0025] Step 4, Pipe Relocation: Raise the height of the bottom of the mud discharge pipe and move the bottom end of the mud discharge pipe to the top side of the annular frame;

[0026] Step 5, Filtration: As the mud falls, it passes through a ring screen plate, which filters out larger pieces of mud.

[0027] Step Six, Testing: Temporarily seal the bottom of the testing funnel using the bottom sealing component. Then, add sufficient mud to the testing funnel and release the bottom sealing component. During the mud discharge process, start timing from when the mud begins to flow out of the testing funnel and stop when a sufficient weight of mud is measured on the weighing platform. Based on the specific measurement time, the viscosity of the mud is tested to determine the proportion of soil contained in the mud.

[0028] Step 7: Deformation control: After assessing the risk of formation deformation, preventative measures for formation deformation are implemented.

[0029] (III) Beneficial Effects

[0030] Compared with the prior art, the present invention provides a deformation control device and method for pipe jacking construction, which has the following beneficial effects:

[0031] 1. In this invention, when it is necessary to prevent and predict the formation deformation problem during pipe jacking construction, the contact surface of the fixed sleeve is first made to fit with the jacking end face of the formation. During the pipe jacking process, the pipe passes through the inside of the drive sleeve, and the mud discharged during the pipe jacking process will enter the drive sleeve and then be discharged through the mud discharge pipe. The mud discharge pipe can discharge the mud into the mud pool or into the funnel detection structure. Using the Martens funnel detection principle, the ratio of water to soil in the mud is detected, and the formation deformation is judged based on the amount of mud and sand discharged from the borehole.

[0032] 2. In this invention, during the discharge of mud from the mud discharge pipe, the mud will be temporarily retained in the mud discharge pipe through the arc-shaped retention plate. The staff can visually measure the amount of mud and sand retained in the mud discharge pipe and judge the mud and sand content in the mud. If it is found that the mud and sand content in the mud is too high or the mud and sand composition has changed, the mud will be quickly discharged into the funnel detection structure for judgment, thereby preventing formation deformation and timely controlling the formation deformation. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of this application;

[0034] Figure 2 This is a partial cross-sectional structural diagram of this application;

[0035] Figure 3 This is a partial cross-sectional structural diagram showing the fit between the fixed sleeve, the lifting trough frame, the mud discharge pipe, and the friction ring sleeve in this application;

[0036] Figure 4 For this application Figure 3 A magnified structural diagram of point A in the middle;

[0037] Figure 5 This is a partial cross-sectional structural diagram showing the fit between the fixed sleeve, driving sleeve, rotating ring, annular sealing plate, and arc-shaped support seat in this application;

[0038] Figure 6 This is a schematic diagram of the structure of the annular sealing plate and the arc-shaped support base in this application;

[0039] Figure 7 This is a partial cross-sectional structural diagram showing the fit between the drive sleeve, the conical spiral cylinder seat, the annular mounting frame, the liquid outlet, and the arc-shaped threaded plate in this application.

[0040] Figure 8 This is a partial cross-sectional structural diagram showing the cooperation between the pipeline moving structure and the funnel detection structure in this application;

[0041] Figure 9 This is a schematic diagram of the funnel detection structure in this application;

[0042] Figure 10 For this application Figure 9 A magnified schematic diagram of the structure at point B in the middle.

[0043] In the diagram: 1. Bottom mounting frame; 2. Fixed sleeve; 3. Lifting frame; 4. Slurry discharge pipe; 5. Rotating shaft seat; 6. First drive cylinder; 7. Second drive cylinder; 8. Friction ring sleeve; 9. Drive sleeve; 10. Conical spiral cylinder seat; 11. Annular mounting frame; 12. Discharge trough; 13. Arc-shaped threaded plate; 14. Spring damper; 15. Rotating ring; 16. Annular sealing plate; 17. Arc-shaped support seat; 18. Discharge trough; 19. Fixed bracket; 20. Sloping sliding frame; 1. Fixed ring; 22. Sliding rod; 23. Mounting bracket; 24. Third electric cylinder; 25. Detection funnel; 26. Annular frame; 27. Annular sieve plate; 28. Weighing platform; 29. ​​Collection tank; 30. Sealing seat; 31. L-shaped support rod; 32. Electromagnetic component; 33. Ferrous ring; 34. Arc-shaped retention plate; 35. Gear frame; 36. Transmission gear; 37. First drive motor; 38. Drainage pipe; 39. Second drive motor; 40. Drive gear; 41. Drive electric cylinder. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Example 1, please refer to Figures 1 to 10 A deformation control device for pipe jacking construction includes a bottom mounting frame 1, which moves between the pipe jacking equipment and the jacking end face of the stratum during the pipe jacking construction process, so that the pipe passes through the fixed sleeve 2 during the movement, so as to keep the pipe jacking process stable, and to deliver the mud discharged during the jacking process at a fixed point.

[0046] Please see Figures 1 to 5 It also includes a fixed sleeve 2, a lifting slot 3 slidably connected to the top of the bottom mounting slot 1, a drive electric cylinder 41 horizontally arranged on the bottom mounting slot 1, the output end of the drive electric cylinder 41 is fixedly connected to the bottom of the lifting slot 3, and starting the drive electric cylinder 41 can drive the lifting slot 3 to move horizontally within the bottom mounting slot 1, so that the contact surface of the fixed sleeve 2 is tightly fitted with the stratum jacking end face.

[0047] A position adjustment structure is provided between the fixed sleeve 2 and the lifting trough frame 3. The position adjustment structure includes a rotating shaft seat 5 and a second drive cylinder 7. The rotating shaft seat 5 is longitudinally slidably mounted on the lifting trough frame 3. A first drive cylinder 6 is provided at the bottom of the lifting trough frame 3 to drive the rotating shaft seat 5 to move longitudinally. The second drive cylinder 7 is provided on the lifting trough frame 3 to drive the fixed sleeve 2 to offset along the center point of the rotating shaft seat 5. The output end of the second drive cylinder 7 is connected to the fixed sleeve 2. When it is necessary to make the height and tilt angle of the fixed sleeve 2 consistent with the height and tilt angle of the pipe jacking equipment driving the pipe, the bottom of the second drive cylinder 7 is rotatably mounted on the lifting trough frame 3. The output end of the second drive cylinder 7 is rotatably connected to the fixed sleeve 2. The first drive cylinder 6 is started to drive the rotating shaft seat 5 to move downward to adjust the height of the fixed sleeve 2. At the same time, the second drive cylinder 7 is started to drive the fixed sleeve 2 to rotate along the center point of the rotating shaft on the rotating shaft seat 5 to realize the control of the tilt angle of the fixed sleeve 2, so that the fixed sleeve 2 corresponds to the pipe jacking direction and angle.

[0048] One side of the fixed sleeve 2 is provided with a contact surface that abuts against the formation. A friction ring 8 is provided on the contact surface of the sleeve to abut against the formation jacking end face. In order to ensure the stability of the fixed sleeve 2 and the multiple components inside the fixed sleeve 2 during operation, the friction ring 8 is made to fit against the formation jacking end face to support the fixed sleeve 2 and prevent the fixed sleeve 2 from shifting.

[0049] Please see Figures 1 to 3 and Figures 5 to 7 The fixed sleeve 2 is equipped with a sleeve-type drive structure to drive the pipeline into the formation and discharge mud. The sleeve-type drive structure includes a drive sleeve 9, a liquid outlet 12, and an arc-shaped threaded plate 13. The drive sleeve 9 is rotatably mounted inside the fixed sleeve 2 via a rotating support assembly. A conical spiral cylinder seat 10 is provided on the side of the drive sleeve 9 near the friction ring sleeve 8, and an annular mounting frame 11 is provided on the other side of the drive sleeve 9 opposite to the conical spiral cylinder seat 10. Multiple liquid outlets 12 are opened on the middle circumference of the drive sleeve 9. Multiple arc-shaped threaded plates 13 are circumferentially slidably mounted inside the annular mounting frame 11. The outer arc surface of the arc-shaped threaded plate 13 is flush with the inner arc surface of the annular mounting frame 11. The wall is equipped with a spring damper 14. When the pipeline passes through the drive sleeve 9 and pushes into the formation, the spring damper 14 causes multiple arc-shaped threaded plates 13 to contact the outer wall of the pipeline. The threaded section formed by the multiple arc-shaped threaded plates 13 drives the pipeline to push into the formation during the rotation of the drive sleeve 9. During the pipeline pushing process, the drilling mud in the borehole will be discharged into the drive sleeve 9 and fall into the conical auger seat 10. As the drive sleeve 9 rotates, it drives the conical auger seat 10 to carry the mud into the middle section of the drive sleeve 9 and finally discharges it through the liquid outlet 12. The threaded section formed between the multiple arc-shaped threaded plates 13 has the opposite thread to the threaded section in the conical auger seat 10.

[0050] The rotating support assembly includes a rotating ring 15 and an arc-shaped support seat 17. Two rotating rings 15 are fixedly sleeved in the middle of the drive sleeve 9, and an annular sealing plate 16 is rotatably arranged between the two rotating rings 15. Arc-shaped grooves are opened on both sides of the arc-shaped support seat 17, and the rotating rings 15 are slidably connected in the arc-shaped grooves. The annular sealing plate 16 is fixedly connected in the middle of the arc-shaped support seat 17. A drainage channel 18 is connected between the annular sealing plate 16, the arc-shaped support seat 17, and the bottom of the fixed sleeve 2. The drainage channel 18 is connected to the mud discharge... The outlet pipe 4 is connected. During the rotation of the drive sleeve 9, the two rotating rings 15 follow the rotation of the drive sleeve 9. Through the sliding support relationship between the arc-shaped support seat 17 and the rotating rings 15, it is ensured that the rotation of the drive sleeve 9 corresponds to the center point of the fixed sleeve 2, and the mud discharged from the liquid outlet 12 in the drive sleeve 9 enters the annular sealing plate 16. Finally, it is discharged into the mud discharge pipe 4 through the liquid outlet 18 connected between the annular sealing plate 16, the arc-shaped support seat 17 and the bottom of the fixed sleeve 2.

[0051] A gear frame 35 is fitted onto the drive sleeve 9. The gear frame 35 passes through the top of the fixed sleeve 2. Two meshing transmission gears 36 are arranged inside the gear frame 35. One of the transmission gears 36 is fixedly fitted onto the drive sleeve 9. A first drive motor 37 is arranged at the top of the fixed sleeve 2. The output end of the first drive motor 37 is fixedly connected to the other transmission gear 36. By starting the first drive motor 37, the drive sleeve 9 is driven to rotate inside the fixed sleeve 2 through the transmission meshing relationship of the two transmission gears 36.

[0052] Please see Figures 1 to 2 and Figure 8 The bottom of the fixed sleeve 2 and the sleeve-type drive structure is connected to the mud discharge pipe 4. The bottom mounting bracket 1 is equipped with a pipe moving structure for adjusting the position of the discharge end of the mud discharge pipe 4. The pipe moving structure includes a fixed bracket 19, a fixed ring 21, and a mounting bracket 23. The fixed bracket 19 is fixedly connected to the bottom mounting bracket 1, and a sloped sliding frame 20 is fixedly connected to the fixed bracket 19. The bottom of the mud discharge pipe 4 is fixedly fitted with the fixed ring 21, which is slidably connected to the sloped sliding frame 20 through a sliding rod 22. The mounting bracket 23 is fixedly connected to the top of the sloped sliding frame 20. A third electric cylinder 24 is provided between the top of the mounting bracket 23 and the top of the fixing ring 21. A drainage pipe 38 is fixedly connected to one side of the fixing bracket 19. The discharge end of the drainage pipe 38 faces the mud pool. When it is necessary to transport the mud in the pipe jacking process to the mud pool for recycling, the bottom of the mud discharge pipe 4 faces the top of the drainage pipe 38 to transport the mud into the drainage pipe 38, and then transport it to the mud pool through the drainage pipe 38. The third electric cylinder 24 is rotatably set on the top of the mounting bracket 23, and the output end of the third electric cylinder 24 is rotatably connected to the top of the fixing ring 21.

[0053] When it is necessary to align the bottom of the mud discharge pipe 4 with the funnel detection structure, the third electric cylinder 24 is activated to move the fixed ring 21 upward, raising the height of the bottom of the mud discharge pipe 4. Under the action of the sliding rod 22, the fixed ring 21 moves upward along the inclined side wall of the slope sliding frame 20, moving the bottom of the mud discharge pipe 4 to the top side of the ring frame 26.

[0054] Please see Figures 1 to 2 and Figures 8 to 10A funnel detection structure is installed between the bottom mounting frame 1 and the mud discharge pipe 4 to detect the discharged mud and predict formation deformation. The funnel detection structure includes a detection funnel 25, an annular sieve plate 27, a weighing platform 28, and a bottom sealing assembly. The detection funnel 25 is fixedly connected to the bottom mounting frame 1. An annular frame 26 is rotatably mounted on the top of the detection funnel 25, and the annular sieve plate 27 is installed inside the annular frame 26. The weighing platform 28 is installed at the bottom of the detection funnel 25, and a collection trough 29 is installed on the weighing platform 28. The bottom sealing assembly is installed at the bottom of the detection funnel 25 to hold the detection funnel. 25 is temporarily closed. After the bottom end of the mud discharge pipe 4 is moved to the top side of the annular frame 26, the mud is discharged from the mud discharge pipe 4. During the fall of the mud, it will pass through the annular screen plate 27 to filter out the larger pieces in the mud. Because the inner diameter of the discharge end connected to the bottom of the detection funnel 25 is small, it is necessary to filter out the larger pieces in the mud in advance before detection. In order to ensure that a sufficient amount of mud is filtered, the annular frame 26 and the annular screen plate 27 can be rotated at the top of the detection funnel 25 to make full use of the top area of ​​the annular screen plate 27 to filter the mud.

[0055] A second drive motor 39 is installed on the bottom mounting bracket 1. A drive gear 40 is fixedly installed on the output end of the second drive motor 39 and on the annular frame 26. The two drive gears 40 mesh. When the second drive motor 39 is started, the annular frame 26 is driven to rotate at the top of the detection funnel 25 through the meshing relationship of the two drive gears 40.

[0056] After the mud is filtered, it flows into the detection funnel 25. The bottom of the detection funnel 25 is temporarily sealed by the bottom sealing component. After a sufficient amount of mud is added to the detection funnel 25, the bottom sealing component is released, allowing the mud to flow out quickly through the bottom of the detection funnel 25 and into the collection tank 29. The weighing platform 28 measures the weight of the discharged mud. During the mud discharge process, an electrical signal timing device can be used to measure the time it takes for the mud to be discharged quantitatively from the detection funnel 25. The timing starts when the mud begins to be discharged from the detection funnel 25 and stops when the weighing platform 28 measures a sufficient weight of mud. Based on the specific measurement time, the viscosity of the mud is detected, and the proportion of soil contained in the mud is determined.

[0057] The bottom sealing assembly includes a sealing seat 30 and an electromagnetic component 32. The sealing seat 30 is disposed through the bottom of the detection funnel 25. An L-shaped support rod 31 is fixedly connected to the bottom of the sealing seat 30. The electromagnetic component 32 is disposed on the side wall of the detection funnel 25. The top of the L-shaped support rod 31 is slidably disposed on the electromagnetic component 32. An iron ring 33 is disposed on the L-shaped support rod 31, and the iron ring 33 is magnetically connected to the electromagnetic component 32. A slot is formed on the top circumference of the sealing seat 30, allowing the sealing seat 30 to fully extend into the output end of the bottom of the detection funnel 25, ensuring proper sealing of the bottom of the detection funnel 25. The bottom of the detection funnel 25 is sealed off, and the top of the L-shaped support rod 31 is set with an arc-shaped groove. After the top of the L-shaped support rod 31 is attached to the outer wall of the detection funnel 25, the ferrous ring 33 is located inside the electromagnetic component 32. By releasing the magnetic connection between the electromagnetic component 32 and the ferrous ring 33, the sealing seat 30 is lowered under its own weight, releasing the seal on the bottom of the detection funnel 25. Then the top of the L-shaped support rod 31 abuts against the top of the electromagnetic component 32, preventing the sealing seat 30 from falling further, allowing the mud in the detection funnel 25 to be discharged normally, and the mud flow rate is detected.

[0058] The mud discharge pipe 4 is a visible pipe. Multiple arc-shaped retention plates 34 are installed inside the mud discharge pipe 4. During the discharge of mud from the mud discharge pipe 4, the mud will be temporarily retained in the mud discharge pipe 4 through the arc-shaped retention plates 34. The staff can visually observe the amount of mud and sand retained in the mud discharge pipe 4 to judge the mud and sand content in the mud. If it is found that the mud and sand content is too high or the mud and sand composition has changed, the mud will be quickly discharged into the funnel detection structure for judgment, thereby preventing formation deformation and timely controlling the formation deformation.

[0059] After determining that the water-soil ratio in the mud is unbalanced, in order to control the formation deformation problem, the excavation should be stopped immediately, the mud-water balance should be stabilized, the grouting inside the borehole should be stabilized, the borehole should be reinforced by grouting, the cause of the formation deformation should be determined, and the formation deformation problem should be repaired.

[0060] The working principle or usage procedure of the deformation control device and method for pipe jacking construction is as follows:

[0061] First, the bottom mounting bracket 1 is moved and positioned between the pipe jacking equipment and the stratum jacking end face. Then, the first drive cylinder 6 is started to drive the rotating shaft seat 5 to move downward, adjusting the height of the fixed sleeve 2. At the same time, the second drive cylinder 7 is started to drive the fixed sleeve 2 to rotate along the center point of the rotating shaft seat 5, thereby controlling the tilt angle of the fixed sleeve 2, so that the fixed sleeve 2 corresponds to the pipe jacking direction and angle, and the friction ring sleeve 8 contacts the stratum jacking end face.

[0062] As the pipeline passes through the drive sleeve 9 and pushes into the formation, the spring damper 14 causes multiple arc-shaped threaded plates 13 to contact the outer wall of the pipeline. The threaded section formed by the multiple arc-shaped threaded plates 13 drives the pipeline to push into the formation during the rotation of the drive sleeve 9. During the pipeline pushing process, the drilling mud in the borehole will be discharged into the drive sleeve 9 and fall into the conical auger seat 10. As the drive sleeve 9 rotates, the conical auger seat 10 drives the mud into the middle section of the drive sleeve 9 and finally discharges it through the outlet 12. The mud discharged from the outlet 12 in the drive sleeve 9 enters the annular sealing plate 16 and finally discharges into the mud discharge pipeline 4 through the drainage outlet 18 that connects the bottom of the annular sealing plate 16, the arc-shaped support seat 17 and the fixed sleeve 2.

[0063] When it is necessary to align the bottom of the mud discharge pipe 4 with the funnel detection structure, the third electric cylinder 24 is activated to move the fixed ring 21 upward, raising the height of the bottom of the mud discharge pipe 4. Under the action of the sliding rod 22, the fixed ring 21 moves upward along the inclined side wall of the slope sliding frame 20, moving the bottom of the mud discharge pipe 4 to the top side of the annular frame 26. During the mud descent, it will pass through the annular screen plate 27, filtering out larger pieces in the mud.

[0064] After the mud is filtered, it flows into the detection funnel 25. The bottom of the detection funnel 25 is temporarily sealed by the bottom sealing component. After a sufficient amount of mud is added to the detection funnel 25, the bottom sealing component is released, allowing the mud to flow out quickly through the bottom of the detection funnel 25 and into the collection tank 29. During the mud discharge process, the timer starts when the mud begins to flow out of the detection funnel 25 and stops when the weighing platform 28 measures a sufficient weight of mud. Based on the specific measurement time, the viscosity of the mud is detected to determine the proportion of soil contained in the mud.

[0065] Example 2: Based on a pipe jacking construction deformation control device, this example 2 also proposes a pipe jacking construction deformation control method, including the following steps:

[0066] Step 1: Move the equipment: First, move the bottom mounting bracket 1 between the pipe jacking equipment and the stratum jacking end face, so that the fixed sleeve 2 corresponds to the pipe jacking direction and angle, and bring the friction ring sleeve 8 into contact with the stratum jacking end face;

[0067] Step 2, Pipe jacking: The pipe passes through the drive sleeve 9 and is jacked into the formation. The threaded section composed of multiple arc-shaped threaded plates 13 cooperates with the pipe jacking equipment during the rotation of the drive sleeve 9, driving the pipe to be jacked into the formation.

[0068] Step 3, Drainage: During the pipeline jacking process, the drilling mud in the borehole will be discharged into the drive sleeve 9, and the mud will fall into the conical auger seat 10. Finally, it will be discharged into the mud discharge pipe 4 through the drainage trough 18 and can be discharged into the mud pool.

[0069] Step 4, pipe relocation: Raise the bottom of the mud discharge pipe 4 and move the bottom end of the mud discharge pipe 4 to the top side of the annular frame 26;

[0070] Step 5, Filtration: During the descent of the mud, it will pass through the annular screen plate 27 to filter out larger pieces of mud.

[0071] Step 6, Testing: The bottom of the testing funnel 25 is temporarily sealed by the bottom sealing component. After adding sufficient mud to the testing funnel 25, the bottom sealing component is released from the bottom of the testing funnel 25. During the mud discharge process, the timer starts when the mud begins to discharge from the testing funnel 25 and stops when the weighing platform 28 measures a sufficient weight of mud. Based on the specific measurement time, the viscosity of the mud is tested to determine the proportion of soil contained in the mud.

[0072] Step 7: Deformation control: After assessing the risk of formation deformation, preventative measures for formation deformation are implemented.

[0073] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A deformation control device for pipe jacking construction, comprising a bottom mounting bracket (1), characterized in that, Also includes: The fixed sleeve (2) is slidably connected to the top of the bottom mounting slot (1) and the lifting slot (3). A position adjustment structure is provided between the fixed sleeve (2) and the lifting slot (3). One side of the fixed sleeve (2) is provided with an abutting surface that abuts against the stratum. A sleeve-type drive structure is provided inside the fixed sleeve (2) to drive the pipeline into the formation and discharge mud. The mud discharge pipe (4) is connected to the bottom of the fixed sleeve (2) and the sleeve-type drive structure. The bottom mounting bracket (1) is provided with a pipe moving structure for adjusting the position of the discharge end of the mud discharge pipe (4). The funnel detection structure is provided between the bottom mounting trough (1) and the mud discharge pipe (4) to detect the discharged mud for predicting formation deformation problems.

2. The deformation control device for pipe jacking construction according to claim 1, characterized in that, The position adjustment structure includes: Rotary shaft seat (5), the rotating shaft seat (5) is longitudinally slidably disposed on the lifting slot frame (3), and the bottom of the lifting slot frame (3) is provided with a first drive cylinder (6) that drives the rotating shaft seat (5) to move longitudinally; The second drive cylinder (7) is provided on the lifting slot frame (3), which drives the fixed sleeve (2) to shift along the center point of the rotating shaft seat (5). The output end of the second drive cylinder (7) is connected to the fixed sleeve (2).

3. The deformation control device for pipe jacking construction according to claim 2, characterized in that, The fixed sleeve (2) is provided with a friction ring (8) on its contact surface, which is used to abut the fixed sleeve (2) against the jacking end face of the formation.

4. The deformation control device for pipe jacking construction according to claim 3, characterized in that, The sleeve-type drive structure includes: A drive sleeve (9) is rotatably mounted inside the fixed sleeve (2) via a rotational support assembly. A conical spiral cylinder seat (10) is provided on the side of the drive sleeve (9) near the friction ring sleeve (8), and an annular mounting frame (11) is provided on the other side of the drive sleeve (9) opposite to the conical spiral cylinder seat (10). The liquid outlet (12) is provided in a plurality of liquid outlets (12) on the middle circumference of the drive sleeve (9); Arc-shaped threaded plate (13), the number of which is set to multiple, the multiple arc-shaped threaded plates (13) are circumferentially slidably arranged in the annular mounting frame (11), and the outer arc surface of the arc-shaped threaded plate (13) and the inner wall of the annular mounting frame (11) are provided with spring dampers (14).

5. The deformation control device for pipe jacking construction according to claim 4, characterized in that, The rotational support assembly includes: Rotating ring (15), two rotating rings (15) are fixedly sleeved in the middle of the driving sleeve (9), and an annular sealing plate (16) is rotatably arranged between the two rotating rings (15); An arc-shaped support base (17) is provided with arc-shaped grooves on both sides. The rotating ring (15) is slidably connected in the arc-shaped grooves. The annular sealing plate (16) is fixedly connected to the middle of the arc-shaped support base (17). A drain outlet (18) is connected between the bottom of the annular sealing plate (16), the arc-shaped support base (17), and the fixed sleeve (2). The drain outlet (18) is connected to the mud discharge pipe (4).

6. The deformation control device for pipe jacking construction according to claim 5, characterized in that, The pipeline moving structure includes: A fixed bracket (19) is fixedly connected to the bottom mounting slot (1), and a slope sliding frame (20) is fixedly connected to the fixed bracket (19); A fixed ring sleeve (21) is fixedly fitted at the bottom of the mud discharge pipe (4), and the fixed ring sleeve (21) is slidably connected to the slope sliding frame (20) through a sliding rod (22); Mounting bracket (23) is fixedly connected to the top of the slope sliding frame (20), and a third electric cylinder (24) is provided between the top of the mounting bracket (23) and the top of the fixing ring (21).

7. The deformation control device for pipe jacking construction according to claim 6, characterized in that, The funnel detection structure includes: The detection funnel (25) is fixedly connected to the bottom mounting slot (1), and the top of the detection funnel (25) is rotatably provided with an annular frame (26); An annular sieve plate (27) is provided inside the annular frame (26); Weighing platform (28), the weighing platform (28) is provided at the bottom of the detection funnel (25), and a collection tank (29) is provided on the weighing platform (28); Bottom sealing component: The bottom of the detection funnel (25) is provided with the bottom sealing component for temporarily sealing the detection funnel (25).

8. The deformation control device for pipe jacking construction according to claim 7, characterized in that, The bottom closure component includes: A sealing seat (30) is provided through the bottom of the detection funnel (25), and an L-shaped support rod (31) is fixedly connected to the bottom of the sealing seat (30). An electromagnetic component (32) is disposed on the side wall of the detection funnel (25). The top of the L-shaped support rod (31) is slidably disposed on the electromagnetic component (32). An iron ring sleeve (33) is disposed on the L-shaped support rod (31), and the iron ring sleeve (33) is magnetically connected to the electromagnetic component (32).

9. A deformation control device for pipe jacking construction according to claim 8, characterized in that, The mud discharge pipe (4) is a visible pipe, and multiple arc-shaped retention plates (34) are installed inside the mud discharge pipe (4).

10. A method for controlling deformation during pipe jacking construction, using the pipe jacking construction deformation control device as described in claim 9, characterized in that, Includes the following steps: Step 1, moving the equipment: First, move the bottom mounting bracket (1) between the pipe jacking equipment and the stratum jacking end face, so that the fixed sleeve (2) corresponds to the pipe jacking direction and angle, and bring the friction ring sleeve (8) into contact with the stratum jacking end face; Step 2, Pipe jacking: The pipe passes through the drive sleeve (9) and is jacked into the stratum. The threaded section composed of multiple arc-shaped threaded plates (13) cooperates with the pipe jacking equipment during the rotation of the drive sleeve (9) to drive the pipe into the stratum. Step 3, Drainage: During the pipeline jacking process, the drilling mud in the borehole will be discharged into the drive sleeve (9), and the mud will fall into the conical spiral cylinder seat (10). Finally, it will be discharged into the mud discharge pipe (4) through the drainage slot (18) and can be discharged into the mud pool. Step 4, pipe moving: Raise the height of the bottom of the mud discharge pipe (4) and move the bottom end of the mud discharge pipe (4) to the top side of the annular frame (26); Step 5, Filtration: During the descent of the mud, it will pass through the annular screen plate (27) to filter out larger pieces of mud. Step 6, Detection: The bottom of the detection funnel (25) is temporarily sealed by the bottom sealing component. After adding enough mud to the detection funnel (25) for detection, the bottom sealing component is released from the bottom of the detection funnel (25). During the mud discharge process, the time is started from the beginning of the mud discharge from the detection funnel (25) and stopped when the weighing platform (28) has measured a sufficient weight of mud. The viscosity of the mud is detected according to the specific measurement time to determine the proportion of soil contained in the mud. Step 7: Deformation control: After assessing the risk of formation deformation, preventative measures for formation deformation are implemented.

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