Construction method and system for ultra-deep underground diaphragm wall in water-rich soft soil area

Abstract

Compared with the prior art, the construction method and system for the ultra-deep underground diaphragm wall in the water-rich soft soil area have the following beneficial effects that limiting force can be provided for the joint pipe in the horizontal direction through friction force of the driving roller and the outer surface of the joint pipe, and the swing amplitude of the joint pipe can be reduced; the construction method comprises the steps that firstly, guide walls are built, and a construction groove is dug between the built guide walls; secondly, joint pipe construction equipment is arranged at the two ends of the construction groove; and thirdly, the upper end of the joint pipe is hoisted through a crane, the lower end of the joint pipe extends into the joint pipe construction equipment, the two driving rollers make contact with the two side walls of the joint pipe, the driving rollers rotate at the constant speed so that the linear speed of the peripheral face can be equal to the working speed of the crane, and the joint pipe can move downwards so that the driving rollers can be arranged in the construction groove.

Description

Technical Field

[0001] The present invention relates to the technical field of continuous wall construction, and in particular to a method and system for constructing an ultra-deep underground continuous wall in a water-rich soft soil area. Background Art

[0002] During the construction of the continuous wall, it is necessary to build a guide wall and dig a deep trench. Each time a long and narrow deep trench is dug, the trench is then cleaned. After the trench is cleaned, joint pipes are set at both ends of the long and narrow deep trench, and then a steel cage is hung between the two joint pipes. Then concrete is poured between the two joint pipes. After the concrete has initially set, the joint pipe is lifted and completely pulled out before the concrete has completely set, thus forming a unit trench section. This is then carried out section by section to form a continuous reinforced concrete wall underground. The purpose of setting the joint pipe is to form an interface groove at the interface of the unit trench section, thereby ensuring the quality of the continuous wall connection.

[0003] The joint pipe needs to be set vertically during construction. The placement quality of the street pipe directly affects the molding quality of the interface of the poured concrete unit wall, and has a great impact on the construction quality of the continuous wall. At present, when placing and removing the joint pipe, a large crane is mostly used for lifting. The crane swings greatly during lifting, and the accuracy of the crane's adjustment position is not high, resulting in low placement quality of the joint pipe.

[0004] When the joint pipe is pulled out, it should also be ensured that the joint pipe is pulled out vertically and continuously at a uniform speed to prevent the swing of the joint pipe from causing damage to the concrete interface. The current method of lifting with a crane can ensure uniform lifting speed, but the verticality cannot be well guaranteed during lifting, and when the joint pipe is stuck, it cannot be handled well. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide a method and system for constructing an ultra-deep underground continuous wall in a water-rich soft soil area.

[0006] To achieve the above object, the technical solution of the present invention is: a method for constructing an ultra-deep underground continuous wall in a water-rich soft soil area, comprising the following steps:

[0007] Step 1: Build guide walls and dig construction trenches between the built guide walls;

[0008] Step 2: Install joint pipe construction equipment at both ends of the construction trench;

[0009] Step 3: Use a crane to lift the upper end of the joint pipe, and extend the lower end into the joint pipe construction equipment. The two driving rollers are in contact with the two side walls of the joint pipe. The driving rollers rotate at a uniform speed so that the linear speed of the outer circumference is equal to the working speed of the crane, so that the joint pipe moves downward and the driving rollers are set in the construction groove.

[0010] Furthermore, it also includes:

[0011] Step 4: After the poured concrete in the construction trough has initially set, control the driving roller to rotate at a uniform speed so that the linear speed of the outer peripheral surface is equal to the lifting speed of the crane, and pull out the joint pipe at a uniform speed under the pulling force of the crane and the friction between the driving roller and the joint pipe.

[0012] Furthermore, it also includes:

[0013] Step 5: During the process of lifting the joint pipe, the pull-out condition of the joint pipe is detected by the detection roller group. When the joint pipe becomes stuck, the auxiliary component works to apply an upward pull-out force to the joint pipe.

[0014] Furthermore, the present application also provides a super-deep underground continuous wall in a water-rich soft soil area, including a joint pipe construction device, the joint pipe construction device comprising:

[0015] A bottom plate, wherein a passage is provided in a middle area;

[0016] A driving roller, comprising two driving rollers arranged in parallel and symmetrically on both sides of the channel;

[0017] The auxiliary assembly includes a power telescopic member arranged on the base and two auxiliary beam groups arranged on the upper end of the power telescopic member;

[0018] The detection roller group comprises a detection roller arranged in parallel with the driving roller and a detection sensor for obtaining whether the detection roller is rotating, and the detection sensor is connected with the power telescopic member.

[0019] Furthermore, telescopic guide rods are arranged on the bottom plate at both sides of the channel, the power telescopic parts are connected to the telescopic guide rods, and the auxiliary beam group is arranged at the upper end of the telescopic guide rods.

[0020] Furthermore, the telescopic guide rod comprises a guide rod connected to the base plate and a guide cylinder sleeved on the guide rod, one end of the power telescopic member is connected to the base plate, and the other end is connected to the guide cylinder.

[0021] Furthermore, the detection roller group also includes an extrusion rod connected to the guide cylinder, the upper end of the extrusion rod is horizontally guided by a first sleeve, a second guide rod is guided inside the first sleeve, a locking bolt is threadedly connected to the side wall of the first sleeve, the second guide rod is perpendicular to the axis of the detection roller, and the detection roller is arranged at the end of the second guide rod.

[0022] Furthermore, a high-pressure air pipe is further provided on the bottom plate below the driving roller, and a plurality of air nozzles are evenly spaced on the high-pressure air pipe, and the air jet direction of the air nozzles is toward the channel.

[0023] Furthermore, the detection roller is driven and connected to an air pump, and an air outlet of the air pump is connected to a high-pressure air pipe.

[0024] Furthermore, the auxiliary beam group includes a supporting beam and a movable beam, a first inclined surface is arranged between the upper and lower surfaces of the side surfaces of the supporting beam close to the channel, the movable beam includes a second inclined surface slidingly matched with the first inclined surface and a driving surface close to one side of the channel, and an electromagnet is arranged on the driving surface.

[0025] Compared with the prior art, the invention discloses a method and system for constructing an ultra-deep underground continuous wall in a water-rich soft soil area, which has the following beneficial effects: the friction between the driving roller and the outer surface of the joint pipe can provide a limiting force on the joint pipe in the horizontal direction, and the swing amplitude of the joint pipe can be reduced, thereby reducing the deviation of the joint pipe installation and ensuring the installation accuracy of the joint pipe. The construction method comprises the following steps: first, constructing a guide wall, and digging a construction groove between the constructed guide walls;

[0026] Step 2: joint pipe construction equipment is set at both ends of the construction groove; Step 3: the upper end of the joint pipe is lifted by a crane, and the lower end is inserted into the joint pipe construction equipment, and the two driving rollers are in contact with the two side walls of the joint pipe. The driving rollers rotate at a uniform speed so that the linear speed of the outer peripheral surface is equal to the working speed of the crane, so that the joint pipe moves downward and the driving rollers are set in the construction groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The structure of the ultra-deep underground continuous wall construction system in water-rich soft soil area of ​​the present invention is schematically shown. Figure 1 .

[0028] Figure 2 The overall structure of the ultra-deep underground continuous wall construction system in water-rich soft soil area of ​​the present invention is schematically shown. Figure 2 .

[0029] Figure 3 The structure of the ultra-deep underground continuous wall construction system in water-rich soft soil area of ​​the present invention is schematically shown. Figure 3 .

[0030] Figure 4 This is a structural schematic diagram of an ultra-deep underground continuous wall construction system in a water-rich soft soil area according to the present invention in which one detection roller group is omitted.

[0031] Figure 5 for Figure 4 The diagram shows a partially enlarged structural diagram of location B in a super-deep underground continuous wall construction system in a water-rich soft soil area according to the present invention.

[0032] Figure 6 It is a structural schematic diagram of omitting the detection roller group in a super-deep underground continuous wall construction system in a water-rich soft soil area according to the present invention.

[0033] Figure 7The present invention is a schematic structural diagram of a detection roller group in an ultra-deep underground continuous wall construction system in a water-rich soft soil area.

[0034] Figure 8 This is a structural schematic diagram of an ultra-deep underground continuous wall construction system in water-rich soft soil areas of the present invention, in which a base and guide rods are omitted.

[0035] Fig. 9 It is a schematic diagram of the connection structure of the base, guide rod, drive roller and high-pressure air pipe in the present invention.

[0036] Fig.10 It is a schematic diagram of the connection structure of the support beam and the movable beam in the present invention.

[0037] Fig.11 It is a schematic diagram of the connection structure between the driving roller and the driving motor in the present invention.

[0038] Fig.12 It is a schematic diagram of the side structure of the driving motor and the high-pressure air pipe in the present invention.

[0039] Fig.13 It is a schematic diagram of the connection structure of the extrusion rod, the control valve, the liquid pump and the oil return chamber in the present invention.

[0040] Fig.14 It is a schematic diagram of the structure of the extrusion rod in the present invention.

[0041] Fig.15 It is a schematic diagram of the structure of the driving rod in the present invention.

[0042] Fig.16 It is a structural schematic diagram of the control valve in the present invention.

[0043] Fig.17 It is a schematic diagram of the internal structure of the detection roller in the present invention.

[0044] Fig.18 The present invention is a schematic diagram of the process of constructing an ultra-deep underground continuous wall in a water-rich soft soil area.

[0045] In the figure: 1, bottom plate; 10, channel;

[0046] 2. driving roller; 21. driving motor; 22. transmission belt;

[0047] 3. Telescopic guide rod; 31. Power telescopic member; 32. Connecting plate; 33. Guide rod; 34. Guide cylinder;

[0048] 4. Auxiliary beam group; 42. Support beam; 410. First plate; 411. T-shaped guide; 41. Movable beam; 420. Second plate; 421. T-shaped slot; 43. Driving rod; 430. Second cylinder; 431. Second piston; 432. Second piston rod; 433. Liquid inlet; 434. First one-way valve; 435. Liquid outlet; 44. Control valve; 440. Valve channel; 441. Third port; 442. Fourth port; 443. Fifth port; 445. Valve stem; 446. Fourth piston; 447. Third compression spring; 448. First end cover;

[0049] 5. Detection roller group; 51. Extrusion rod; 510. First cylinder; 511. First piston; 512. First piston rod; 513. First compression spring; 514. Second compression spring; 515. First port; 516. Second port; 52. Detection roller; 521. Second end plate; 522. Third end plate; 5221. Connecting shaft; 523. Support sleeve; 524. Air collecting channel; 525. Transmission shaft; 526. Gear shaft; 5260. First gear ring; 5261. First gear; 5262. Second gear; 5263. Third gear; 527. Air collecting cover; 528. Air pipe; 53. First housing; 531. Second housing; 532. Third housing; 534. Second guide rod; 533. Locking bolt;

[0050] 6. High-pressure air pipe; 61. Air nozzle;

[0051] 7. air pump; 71. pump body; 72. third piston chamber; 73. third piston; 74. third piston rod; 75. connecting air passage; 76. fourth compression spring; 77. air inlet; 771. third one-way valve; 78. air outlet; 781. fourth one-way valve; 79. extrusion plate; 791. extrusion protrusion;

[0052] 8. Liquid pump; 80. Driven gear; 81. Oil return chamber; 83. Oil return pipeline; 84. Overflow valve. DETAILED DESCRIPTION

[0053] The present invention will now be described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and thus only show the components related to the present invention.

[0054] Please refer to Fig.18 The technical solution of the present invention is: a method for constructing an ultra-deep underground continuous wall in a water-rich soft soil area, comprising the following steps:

[0055] Step 1: Build guide walls and dig construction trenches between the built guide walls;

[0056] Step 2: Install joint pipe construction equipment at both ends of the construction trench;

[0057] Step three, lift the upper end of the joint pipe with a crane, and extend the lower end into the joint pipe construction equipment. The two driving rollers 2 are in contact with the two side walls of the joint pipe. The driving rollers 2 rotate at a uniform speed so that the linear speed of the outer circumference is equal to the working speed of the crane, so that the joint pipe moves downward and the driving rollers 2 are set in the construction groove.

[0058] Specifically, through the above-mentioned construction method, when the joint pipe is set in the construction groove, the top of the joint pipe is lifted by a crane, and the lower end is inserted into the joint pipe construction equipment. The side wall of the joint pipe is contacted by two drive rollers 2 arranged at intervals. The drive roller 2 has friction with the outer surface of the joint pipe, and then the crane starts to drive the hook to descend at a uniform speed. At the same time, the drive roller 2 starts to rotate to keep the linear speed of the outer rotation equal to the speed of the crane hook descending. The friction between the drive roller 2 and the outer surface of the joint pipe can provide a limiting force for the joint pipe in the horizontal direction, which can reduce the swing amplitude of the joint pipe, thereby reducing the deviation of the joint pipe installation and ensuring the installation accuracy of the joint pipe.

[0059] Furthermore, it also includes:

[0060] Step 4: After the concrete poured in the construction groove has initially solidified, the driving roller 2 is controlled to rotate at a uniform speed so that the linear speed of the outer peripheral surface is equal to the lifting speed of the crane, and the joint pipe is pulled out at a uniform speed under the pulling force of the crane and the friction between the driving roller 2 and the joint pipe. Specifically, after the joint pipe is placed in the construction groove, a steel cage is placed in the construction groove and concrete is poured. After the concrete has initially solidified, the joint pipe is pulled out upward. When pulling it out, the crane and the driving roller 2 simultaneously provide an upward pulling force to the joint pipe to ensure that sufficient pulling force is applied to the joint pipe. At the same time as pulling it up, the driving roller 2 can limit the joint pipe, reduce the swing amplitude of the joint pipe when it is pulled out, and thus reduce the molding quality at the concrete wall joint.

[0061] Furthermore, it also includes:

[0062] Step 5. During the process of lifting the joint pipe, the pull-out condition of the joint pipe is detected by the detection roller group 5. When the joint pipe is stuck, the auxiliary component works to apply an upward pull-out force to the joint pipe. Specifically, when the joint pipe is pulled up, if the resistance to the jamming of the joint pipe increases, the pull-out speed of the joint pipe may slow down or even stop rising. At this time, sliding friction will occur between the outer peripheral surface of the driving roller 2 and the outer side wall of the joint pipe. By setting the detection roller group 5, the pull-out speed of the joint pipe is detected. When the driving roller 2 is driven normally and the pull-out speed of the joint pipe stops, the auxiliary component is controlled to work and an upward auxiliary pull-out force is applied to the joint pipe to ensure that the joint pipe can be fully pulled out, thereby avoiding the safety risks caused by increasing the lifting force by the crane.

[0063] Embodiment 2

[0064] The present application also provides a construction device for ultra-deep underground continuous wall including joint pipes in water-rich soft soil areas, Figure 1-Figure 8 , joint pipe construction equipment includes:

[0065] The bottom plate 1 has a channel 10 in the middle area;

[0066] The driving rollers 2 include two driving rollers 2 arranged in parallel and symmetrically on both sides of the channel 10;

[0067] The auxiliary assembly includes a power telescopic member 31 disposed on the base and two auxiliary beam groups 4 disposed on the upper end of the power telescopic member 31;

[0068] The detection roller group 5 includes a detection roller 52 arranged parallel to the driving roller 2 and a detection sensor for obtaining whether the detection roller 52 is rotating. The detection sensor is connected to the power telescopic member 31 .

[0069] Specifically, the bottom plate 1 is a rectangular rigid plate body, and a channel 10 is opened through the central area of ​​the support plate. The driving rollers 2 are arranged in parallel and spaced on both sides of the channel 10, and can move in the direction close to and away from the driving roller 2. Each driving roller 2 is driven and connected to a driving motor 21, and the driving motor 21 is driven and connected to the driving roller 2 through a transmission belt 22, wherein the power telescopic member 31 is vertically arranged on the bottom plate 1, and the auxiliary beam group 4 includes two groups corresponding to the two driving rollers 2, and the auxiliary beam group 4 is located above the driving roller 2. The detection roller group 5 is arranged above the auxiliary beam group 4, including a detection roller 52 arranged parallel to the driving roller 2. When working, the detection roller 52 contacts the outer side wall of the joint pipe, and when the joint pipe is pulled out, the detection roller 52 can be driven to rotate around the axis under the action of friction. The rotation speed of the detection roller 52 is detected by a detection sensor (not shown in the figure) so that the pull-out speed of the joint pipe can be obtained. The auxiliary beam group 4 includes a support beam 42 and a movable beam 41. Figure 6 , Fig.10The support beam 42 includes a first inclined surface, and a T-shaped slot 421 is provided on the first inclined surface along the inclined direction of the inclined surface. The movable beam 41 includes a second inclined surface that slides with the first inclined surface. When the first inclined surface contacts and cooperates with the second inclined surface, the movable beam 41 is close to a working surface on one side of the channel 10. At this time, the working surface is vertically arranged, and a T-shaped guide member 411 that guides and cooperates with the T-shaped slot 421 is provided on the second inclined surface. Through this arrangement, the movable beam 41 can slide along the direction of the first inclined surface, so that the working surface can be adjusted in the direction of approaching and moving away from the channel 10, wherein the extension surface of the working surface of the support beam 42 and the movable beam 41 does not overlap with the channel 10 when they are in the initial state. In normal operation, the support beam 42 and the movable beam 41 remain in the initial state. When the joint pipe is stuck and the auxiliary component needs to work, the support beam 42 and the movable beam 41 The initial working state is released. At this time, the movable beam 41 slides down under the action of gravity, so that the working surface of the movable beam 41 contacts the side wall of the joint pipe, wherein an electromagnet is arranged on the working surface. At this time, the electromagnet works to generate magnetism, which is magnetically attracted to the outer wall of the joint pipe. Then the power telescopic part 31 is extended to provide an upward thrust to the support beam 42, and ensure that the extension speed of the power telescopic part 31 is greater than the pull-out speed of the joint pipe, thereby providing a pull-out force for the joint pipe to assist in the pull-out of the joint pipe. After the power telescopic part 31 is extended to a certain length, the electromagnet is powered off and demagnetized, and then the power telescopic part 31 contracts. At this time, if the joint pipe is pulled out again, the auxiliary component stops working. If the joint pipe remains in a stopped state, the auxiliary component repeats the above-mentioned pull-out action until the joint pipe can be pulled out by the drive roller 2 and the crane. The power telescopic part 31 is preferably a hydraulic cylinder.

[0070] Further, as a preferred embodiment, refer to Figure 6 , Figure 8 , Fig. 9 , located on both sides of the channel 10, a telescopic guide rod 3 is provided on the bottom plate 1, a power telescopic member 31 is connected to the telescopic guide rod 3, and an auxiliary beam group 4 is provided at the upper end of the telescopic guide rod 3.

[0071] Specifically, as a preferred embodiment, the telescopic guide rod 3 includes two groups arranged on both sides of the channel 10, and each group includes two groups arranged at both ends of the channel 10. The telescopic guide rod 3 includes a guide rod 33 connected to the base plate 1 and a guide cylinder 34 sleeved on the guide rod 33. The four guide cylinders 34 are fixedly connected to form an integral structure through connecting members. A connecting plate 32 is arranged between two adjacent guide cylinders 34. One end of the power telescopic member 31 is connected to the base plate 1, and the other end is connected to the guide cylinder 34. The power telescopic member 31 includes two groups arranged at both ends of the channel 10. The upper end of the power telescopic member 31 is connected to the connecting plate 32, and the auxiliary beam group 4 is arranged at the upper end of the guide cylinder 34. Through this arrangement, the two power telescopic members 31 are controlled to telescope synchronously, thereby ensuring that the two groups of auxiliary beam groups 4 rise and fall synchronously.

[0072] Further, as a specific implementation method, refer to Figure 7 , Figure 8 The detection roller group 5 also includes an extrusion rod 51 connected to the guide cylinder 34, and the upper end of the extrusion rod 51 is horizontally guided by a first sleeve 53, and a second guide rod 534 is guided inside the first sleeve 53. A locking bolt 533 is threadedly connected to the side wall of the first sleeve 53, and the second guide rod 534 is perpendicular to the axis of the detection roller 52. The detection roller 52 is arranged at the end of the second guide rod 534. Specifically, the detection roller group 5 includes two groups, and an extrusion rod 51 is correspondingly provided at both ends of each detection roller 52. The lower end of the extrusion rod 51 is connected to the connecting plate 32, and the upper end is provided with a first sleeve 53. A second guide rod 534 is guided in the first sleeve 53, and the ends of the two second guide rods 534 are respectively provided with a second sleeve 531 and a third sleeve 532. The two ends of the detection roller 52 are rotatably connected to the second sleeve 531 and the third sleeve 532. A locking bolt 533 is threadedly connected on the side wall of the first sleeve 53. The second guide rod 534 can be locked or released by the locking bolt 533, so that the position of the detection roller 52 can be adjusted to ensure that the detection roller 52 is in contact with the joint pipe.

[0073] Furthermore, the bottom plate 1 is also provided with a high-pressure air pipe 6 below the driving roller 2, and a plurality of air nozzles 61 are evenly spaced on the high-pressure air pipe 6, and the air jet direction of the air nozzles 61 is toward the channel 10. Specifically, it can be understood that when the joint pipe is working, it contacts the mud in the construction groove, and the mud or gravel will adhere to the surface of the joint pipe. The mud will reduce the friction between the driving roller 2 and the joint pipe. When small gravel is squeezed between the joint pipe and the roller surface of the driving roller 2, it will cause certain damage to the surface of the joint pipe and the driving roller 2. As a specific implementation method, refer to Figure 6 , Fig.11 , Fig.12 As shown, further, as a preferred embodiment, refer to Fig.17 A high-pressure air pipe 6 is also arranged below the driving roller 2, and air nozzles 61 are evenly spaced on the high-pressure air pipe 6. The high-pressure air pipe 6 is connected to an air pump 7. When the joint pipe is pulled out, the air pump 7 pumps air into the high-pressure air pipe 6, and the high-pressure gas is ejected from the air nozzle 61. The airflow is sprayed toward the joint pipe, which can separate the mud and gravel on the surface from the joint pipe.

[0074] Further, as a specific implementation method, refer to Fig.17The detection roller 52 is driven and connected to an air pump 7, and the air outlet end of the air pump 7 is connected to the high-pressure air pipe 6. The detection roller 52 is a hollow cylindrical tube. The air pump 7 includes a detachable cylindrical pump body 71 coaxially arranged at the end of the detection roller 52, and the first end surface of the pump body 71 away from the detection roller 52 is evenly spaced around the axis. The bottom guide of the third piston cavity 72 is provided with a third piston rod 74, and a third piston 73 is provided in the third piston cavity 72. The third piston 73 is connected to the third piston rod 74. The other end of the pump body 71 is connected to a second end plate 521, and the second end plate 521 is rotatably connected to the second sleeve 531. The second sleeve 531 is connected to an air collecting cover 527, and a groove body is provided in the central area of ​​the first end surface. The second end plate 521 is provided with an air collecting channel 5 connecting the groove body and the air collecting cover 527. 24. An air pipe 528 connected to the high-pressure air pipe 6 is provided on the air collecting hood 527, and a fourth compression spring 76 is provided between the third piston 73 and the second end plate 521. Under the elastic force of the fourth compression spring 76, the third piston 73 can abut against the bottom of the third piston chamber 72, and at this time, the end of the third piston rod 74 can extend out of the pump body 71, and an air inlet 77 connected to the two third piston chambers 72 is provided on the second end plate 521, and the other end of the air inlet 77 is connected to the atmosphere, and a third one-way valve 771 is provided on the air inlet 77 for allowing air to enter the third piston chamber 72 in one direction, and an air outlet 78 connected to the air collecting passage 524 is provided on the side wall of the third piston chamber 72, and a fourth one-way valve 781 is provided on the air outlet 78 for allowing atmosphere to flow into the air collecting passage 524 in one direction, and a connecting air passage 75 is provided at one end of the third piston chamber 72.

[0075] The other end of the detection roller 52 is connected to the third end plate 522, and a connecting shaft 5221 is coaxially arranged on the third end plate 522. The connecting shaft 5221 is rotatably connected to the third sleeve 532, and a transmission shaft 525 is coaxially rotatably matched inside the connecting shaft 5221. A support sleeve 523 is arranged at an interval with the port at one end of the detection roller 52 close to the air pump 7. The support sleeve 523 is coaxially arranged with the detection roller 52, and the transmission shaft 525 is rotatably connected to the support sleeve 523. An extrusion plate 79 is arranged on the side of the support sleeve 523 close to the air pump 7, and the extrusion plate 79 is connected to the transmission shaft 525. Three extrusion protrusions 791 are evenly spaced around the axis on the side of the extrusion plate 79 facing the air pump 7, and the extrusion protrusions 791 are arranged corresponding to the third piston rod 74.

[0076] A third end plate 522 is provided at one end of the third sleeve 532 away from the detection roller 52, and a mounting cavity is provided on the end surface of the third sleeve 532 away from the detection roller 52, and a first gear ring 5260 is provided on the outside of the end of the connecting shaft 5221 extending into the mounting cavity, and a gear is provided at the end of the transmission shaft 525. Two gear shafts 526 are evenly spaced around the transmission shaft 525 on the third end plate 522, and the gear shaft 526 includes a first gear 5261 meshing with the first gear ring 5260 and a second gear 5262 meshing with the gear. Through the above-mentioned arrangement, when the joint pipe is pulled upward, the detection roller 52 is driven to rotate under the action of friction force, and when the detection roller 52 rotates, it drives the pump body 71 and the connecting shaft 5221 to rotate synchronously around the axis in the same direction. When the connecting shaft 5221 rotates, it can drive the gear shaft 526 to rotate around its own axis. When the third piston rod 74 is pressed, the third piston 73 presses the fourth compression spring 76 to move. At this time, the air pressure in the third piston chamber 72 increases, so that the fourth check valve 781 opens, and the air flow enters the air collecting passage 524. When the extrusion protrusion 791 leaves the third piston rod 74, the third piston 73 returns to its original position under the elastic force of the fourth compression spring 76, so that the air pressure in the third piston chamber 72 decreases. Then, under the action of the negative pressure, the third check valve 771 opens, and the gas in the atmosphere is sucked into the third piston chamber 72. This reciprocating process achieves the air pumping effect.

[0077] Further, refer to Fig.17 A liquid pump 8 is also connected to the end of the third sleeve 532, and a driven gear 80 is connected to the driving shaft of the liquid pump 8. The driven gear 80 is drivingly connected to the gear shaft 526, so that when the detection roller 52 detects rotation, it can drive the air pump 7 and the liquid pump 8 to work at the same time.

[0078] Further, as a specific implementation, the auxiliary beam group 4 includes a support beam 42 and a movable beam 41, and a first inclined surface is arranged between the upper and lower surfaces of the side of the support beam 42 close to the channel 10, and the movable beam 41 includes a second inclined surface slidingly matched with the first inclined surface and a driving surface close to the side of the channel 10, and an electromagnet is arranged on the driving surface.

[0079] Specifically, refer to Figure 4 , Figure 5 , Figure 13-Figure 16, first plates 410 are provided at both ends of the movable beam 41, and second plates 420 arranged parallel to the first plates 410 are provided on the side surfaces of both ends of the support beam 42. A second cylinder 430 is detachably fixedly provided on the second plate 420 along the guiding direction of the first inclined surface and the second inclined surface, and a second piston 431 is provided in the second cylinder 430. A second piston rod 432 is guided and provided on the second plate 420. The end of the second piston rod 432 is connected to the second piston 431, and the other end is detachably fixedly connected to the first plate 410. A liquid inlet 433 and a liquid outlet 435 are provided on the second plate 420. A first one-way valve 434 that allows a flowing medium to flow into the second cylinder 430 in one direction is provided on the liquid inlet 433, and a control valve 44 is provided on the liquid outlet 435, wherein the liquid inlet 433 is connected to the pump outlet end of the liquid pump 8, with reference to Fig.13 The liquid inlet end of the liquid pump 8 is connected to an oil return chamber 81.

[0080] Further, refer to Fig.13 , Fig.14 The extrusion rod 51 includes a first cylinder 510 whose lower end is connected to the connecting plate 32, the first cylinder 510 is vertically arranged, a first piston 511 is arranged in the first cylinder 510, a first piston rod 512 is arranged on the upper end of the first cylinder 510, the first piston 511 is connected to the first piston rod 512, the first sleeve 53 is installed on the upper end of the first piston rod 512, a first compression spring 513 and a second compression spring 514 are respectively arranged on both sides of the first piston 511, a first port 515 is arranged at the lower end of the first cylinder 510, and a second port 516 is arranged at the upper end.

[0081] Further, refer to Fig.16 The control valve 44 includes a valve body, a valve channel 440 arranged in the valve body, a cylindrical cavity coaxially arranged with the valve channel 440, and a fourth piston 446 arranged in the cylindrical cavity. The fourth piston 446 is provided with a valve stem 445 inserted in the valve channel 440. A first end cover 448 is provided at the end of the cylindrical cavity. A third compression spring 447 is provided between the first end cover 448 and the fourth piston 446. Under the elastic force of the third compression spring 447, the fourth piston 446 can abut against the bottom of the cylindrical cavity. A fourth port 442 and a fifth port 443 are respectively provided at both ends of the cylindrical cavity. The fourth port 442 is communicated with the second port 516, the first port 515 is communicated with the fifth port 443, the middle area of ​​the valve channel 440 is communicated with the liquid outlet 435, the bottom of the valve channel 440 is connected with the third port 441, and the third port 441 is connected to the oil return cavity 81.

[0082] Specifically, refer to Fig.10 , Figure 13-Figure 16 At the beginning of construction, the control valve 44 is in Fig.16 In the closed state shown, the second cylinder 430 and the second piston 431 are in Fig.15In the state shown in FIG. 1 , since the control valve 44 is in the closed state, the hydraulic oil in the second cylinder 430 between the second piston 431 and the second plate 420 cannot be discharged, so the relative positions of the first plate 410 and the second plate 420 are as shown in FIG. Fig.15 As shown, reference Fig.10 At this time, the support beam 42 and the movable beam 41 remain in the initial state, and the first piston 511 of the extrusion rod 51 is kept in the initial state under the elastic force of the first compression spring 513 and the second compression spring 514. Fig.14In the initial state, when starting to work, when the joint pipe is sunk and installed in the construction groove, the detection roller 52 is adjusted not to contact the joint pipe. At this time, the air pump 7 and the liquid pump 8 are not working, then the control valve 44 remains in a closed state, the extrusion rod 51 remains in the initial state, and the support beam 42 and the movable beam 41 also remain in the initial state; when the joint pipe is pulled out, the detection roller 52 is in contact with the joint pipe, and the joint pipe drives the detection roller 52 to rotate when it is pulled out, thereby driving the air pump 7 and the liquid pump 8 to work. The air pump 7 works to pump high-pressure gas to the high-pressure air pipe 6, and the liquid pump 8 works to send hydraulic oil to the liquid inlet 433. At this time, the hydraulic oil in the second cylinder 430 is filled, and the hydraulic oil does not enter the second cylinder 430. When the oil pressure increases, the overflow valve 84 on the return oil pipeline 83 opens, and the hydraulic oil flows back to the return oil pipeline 83. The oil chamber 81 has resistance when the detection roller 52 rotates, so there is friction between the detection roller 52 and the joint pipe. Under the action of the friction, the detection roller 52 can be driven to move upward for a certain distance, so the first piston rod 512 can be pulled to drive the first piston 511 to move upward, thereby squeezing the first compression spring 513 and compressing the air in the area of ​​the first cylinder 510 above the first piston 511, so that the air pressure above the first piston 511 is higher than the air pressure below the first piston 511. Since the first cylinder 510 is connected to the control valve 44, the air pressure on the side of the fourth piston 446 in the control valve 44 close to the valve stem 445 is lower than the air pressure on the other side. At this time, the control valve 44 maintains the current closed state, so that the support beam 42 and the movable beam 41 maintain the initial state;When the joint tube gets stuck and stops being pulled out during the process of pulling out, the detection roller group 5 detects it, then controls the power telescopic member 31 to extend, and controls the electromagnet arranged on the movable beam 41 to be energized. In the early stage of the extension of the power telescopic member 31, the movable beam 41 remains in the initial state. At this time, the auxiliary beam group 4 does not apply thrust to the joint tube, and the joint tube remains in a stuck state. As the power telescopic member 31 extends, the guide cylinder 34 and the connecting plate 32 are pushed upward, and the first cylinder 510 is pushed upward, and the detection roller 52 is in contact with the joint tube and has friction, and has a certain Therefore, during the upward movement of the first cylinder 510, the detection roller 52 does not rotate under the action of its own rotational resistance and remains at the current height, which will push the first piston rod 512 to move downward, driving the first piston 511 to move downward to compress the second compression spring 514 below. At this time, the air pressure below the first piston 511 will increase, and the air pressure above the first piston 511 will decrease. At this time, an air pressure difference can be generated on both sides of the fourth piston 446 in the control valve 44. Under the action of the air pressure difference, the fourth piston 446 can be pushed to squeeze the third compression spring 447 to move, and the valve stem 445 can be pulled to move so that the liquid outlet 435 is aligned with the first piston 511. The three ports 441 are connected, the control valve 44 is opened, and the hydraulic oil in the second cylinder 430 is discharged, wherein the discharged flow volume is greater than the maximum pumping flow volume of the liquid pump 8. At this time, the detection roller 52 does not rotate, and the liquid pump 8 does not work. At this time, the second piston 431 is pulled downward by the action of the movable beam 41's own gravity and the magnetic attraction of the electromagnet until the working surface of the movable beam 41 contacts the joint pipe and is magnetically attracted to the joint pipe. At this time, when the power telescopic member 31 continues to extend, the movable beam 41 can apply an auxiliary upward thrust to the joint pipe, thereby assisting in pushing the joint pipe out. After the power telescopic member 31 is extended to the maximum length, the control electromagnet When the power is turned off, if the joint pipe can be driven and pulled out by the crane and the driving roller 2, the detection roller 52 can be pulled upward, and the detection roller 52 is driven to rotate under the action of friction after the first compression spring 513 is compressed to a certain extent, and then the control valve 44 returns to the initial closed state, the liquid pump 8 and the air pump 7 work, and the liquid pump 8 pumps hydraulic oil into the second cylinder 430, and then the second piston 431 is pushed to move under the thrust of the hydraulic oil, and then the second piston rod 432 is pulled to drive the movable beam 41 back to the initial state. After returning to the initial state, the hydraulic oil pumped out by the liquid pump 8 flows back through the oil return pipeline 83, and then the power telescopic member 31 shrinks to the initial state. ;

[0083] After the power telescopic part 31 is extended to the maximum length, the control electromagnet is powered off. At this time, if the joint pipe is still in a stuck state, the power telescopic part 31 is controlled to shrink to the initial state. During the retraction of the power telescopic part 31, the control valve 44 will return to the closed state again, and the movable beam 41 will be pushed back to a certain height by the hydraulic oil pumped by the liquid pump 8. Then the control electromagnet is powered on again, the power telescopic part 31 is extended, and the control valve 44 is opened again. The movable beam 41 slides down and contacts the joint pipe, and is magnetically connected to the joint pipe through magnetic attraction. The push joint pipe applies an upward thrust again until the push joint pipe can be smoothly pulled out.

[0084] Specifically, in some embodiments, the second guide rod 534 is configured as an electric telescopic rod or a pneumatic telescopic rod and is equipped with a control device. The control device can control the second guide rod 534 to maintain its original length when the power telescopic member 31 is extended. When the power telescopic member 31 is retracted from the longest extended state, the second guide rod 534 is retracted, so that the detection roller 52 is not in contact with the joint pipe, so that the detection roller 52 is not driven to rotate during the retraction of the power telescopic member 31, and the liquid pump 8 will not work, so that the position of the movable beam 41 will not change, so as to continuously apply an upward thrust to the joint pipe.

[0085] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A method for constructing ultra-deep underground continuous walls in water-rich soft soil areas. It is characterized in that The following steps are involved: Step 1: Build guide walls and dig construction trenches between the built guide walls; Step 2: Install joint pipe construction equipment at both ends of the construction trench; Step 3: lift the upper end of the joint pipe with a crane, and extend the lower end into the joint pipe construction equipment. The two driving rollers (2) are in contact with the two side walls of the joint pipe. The driving rollers (2) rotate at a constant speed so that the linear speed of the outer peripheral surface is equal to the working speed of the crane, so that the joint pipe moves downward and the driving rollers (2) are set in the construction groove.

2. The method for constructing an ultra-deep underground continuous wall in a water-rich soft soil area according to claim 1, further comprising: include: Step 4: After the concrete poured in the construction trough has initially set, the driving roller (2) is controlled to rotate at a uniform speed so that the linear speed of the outer peripheral surface is equal to the lifting speed of the crane, and the joint pipe is pulled out at a uniform speed under the pulling force of the crane and the friction force between the driving roller (2) and the joint pipe.

3. The method for constructing an ultra-deep underground continuous wall in a water-rich soft soil area according to claim 2, further comprising: include: Step 5: During the process of lifting the joint pipe, the pull-out condition of the joint pipe is detected by the detection roller group (5). When the joint pipe is stuck, the auxiliary component works to apply an upward pull-out force to the joint pipe.

4. An ultra-deep underground continuous wall construction system in water-rich soft soil areas, It is characterized in that Including joint pipe construction equipment, joint pipe construction equipment includes: A bottom plate (1), wherein a channel (10) is arranged in the middle area; A driving roller (2), comprising two driving rollers (2) arranged in parallel and symmetrically on both sides of the channel (10); The auxiliary component comprises a power telescopic member (31) arranged on the base and two auxiliary beam groups (4) arranged on the upper end of the power telescopic member (31); The detection roller group (5) comprises a detection roller (52) arranged parallel to the driving roller (2) and a detection sensor for obtaining whether the detection roller (52) is rotating, wherein the detection sensor is connected to the power telescopic member (31).

5. The ultra-deep underground continuous wall construction system in water-rich soft soil area according to claim 4, It is characterized in that Located on both sides of the channel (10), telescopic guide rods (3) are arranged on the bottom plate (1), a power telescopic member (31) is connected to the telescopic guide rod (3), and an auxiliary beam group (4) is arranged at the upper end of the telescopic guide rod (3).

6. The ultra-deep underground continuous wall construction system in water-rich soft soil area according to claim 5, It is characterized in that The telescopic guide rod (3) comprises a guide rod (33) connected to the base plate (1) and a guide cylinder (34) sleeved on the guide rod (33); one end of the power telescopic member (31) is connected to the base plate (1) and the other end is connected to the guide cylinder (34).

7. The ultra-deep underground continuous wall construction system in water-rich soft soil area according to claim 6, It is characterized in that The detection roller group (5) further comprises an extrusion rod (51) connected to the guide cylinder (34); a first sleeve (53) is horizontally provided at the upper end of the extrusion rod (51); a second guide rod (534) is provided inside the first sleeve (53) for guidance; a locking bolt is threadedly connected to the side wall of the first sleeve (53); the second guide rod (534) is vertically provided to the axis of the detection roller (52); and the detection roller (52) is provided at the end of the second guide rod (534).

8. The ultra-deep underground continuous wall construction system in water-rich soft soil area according to claim 4, It is characterized in that Located below the driving roller (2), the bottom plate (1) is also provided with a high-pressure air pipe (6), on which a plurality of air nozzles (61) are evenly spaced, and the air jet direction of the air nozzles (61) is toward the channel (10).

9. The ultra-deep underground continuous wall construction system in water-rich soft soil area according to claim 8, It is characterized in that The detection roller (52) is drivingly connected to an air pump (7), and the air outlet end of the air pump (7) is connected to a high-pressure air pipe (6).

10. The ultra-deep underground continuous wall construction system in water-rich soft soil area according to claim 9, It is characterized in that The auxiliary beam group (4) comprises a support beam (41) and a movable beam (42); a first inclined surface is arranged between the upper and lower surfaces of the side surfaces of the support beam (41) close to the channel (10); the movable beam (42) comprises a second inclined surface slidably matched with the first inclined surface and a driving surface close to the channel (10); an electromagnet is arranged on the driving surface.

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