Pipe jacking guiding and deviation rectifying equipment and construction method

Abstract

The invention provides pipe jacking guiding and deviation rectifying equipment and a construction method, and relates to building construction. The jacking pipe guiding and deviation rectifying equipment comprises a fixing device, a jacking pipe, a tool bit and a deviation rectifying device. The fixing device comprises an annular pouring plate and a wellhead guide frame; the multiple jacking pipes are connected in sequence, the last jacking pipe is connected to the fixing device in a sliding mode, and a deviation rectifying device is arranged between every two adjacent jacking pipes. The tool bit is arranged on the first jacking pipe; the deviation rectifying device comprises a supporting frame and a plurality of deviation rectifying assemblies, the supporting frame is slidably connected to one jacking pipe, the supporting frame comprises a plurality of supporting parts, each deviation rectifying assembly is arranged on one supporting part, each deviation rectifying assembly comprises a driving part, a winding frame, a steel cable and a fixing part, the driving end of the driving part is connected with a rotating shaft of the winding frame, and the driving end of the steel cable is connected with the rotating shaft of the winding frame. One end of the steel cable is wound around the rotating shaft, the other end of the steel cable is fixedly connected with the fixing piece, and the fixing piece is fixed to the supporting frame located on the upper jacking pipe. According to the method, stable supporting is provided, and accurate guiding control is conducted on the jacking pipe in construction through an active deviation rectifying method.

Description

Technical Field

[0001] The present application relates to the field of building construction, and in particular to a pipe jacking guiding and correcting device and a construction method. Background Art

[0002] As a key piece of equipment in modern trenchless underground pipeline construction, the Pipe Jacking Guidance and Correction System integrates laser measurement technology, a hydraulic control system, a multi-source sensor feedback mechanism, and an intelligent decision-making algorithm. With real-time monitoring and dynamic correction as its core functions, the system effectively addresses the issue of spatial deviation in the pipe jacking machine's posture under complex geological conditions.

[0003] The pipe jacking guidance and correction equipment is mainly composed of the following core modules: high-precision laser guidance unit, multi-degree-of-freedom hydraulic correction actuator, embedded real-time data acquisition system and intelligent human-machine collaborative control platform.

[0004] The current mainstream technologies for guiding and correcting pipe jacking deviation mainly include the following three methods, each with its own technical characteristics and application limitations: The first is the correction jack method, which precisely adjusts the extension and retraction of a hydraulic cylinder to adjust the jacking direction. However, the correction effect decreases exponentially with increasing jacking distance. The second is the cutterhead adjustment method, which dynamically adjusts the cutterhead cutting angle to change the force distribution. This method offers fast response characteristics, but requires extremely high control system accuracy and cannot correct position deviations that occurred before the cutterhead adjustment. The third is the grouting correction method, which uses lateral grouting pressure to generate a correction torque, increasing the strength of the grouting side and correcting the pipe away from the grouting side. However, over long construction distances, the grouting pressure is unevenly distributed, causing differential ground settlement (especially significant in soft soil formations). The properties of the grouting material directly affect the timeliness of the correction (including parameters such as setting time and strength development curve). Furthermore, improper control can cause secondary ground disturbances, exacerbating settlement problems. All three of these methods are passive correction methods, i.e., correction is achieved through the control of external components of the pipe, resulting in poor results. Summary of the Invention

[0005] The purpose of this application is to provide a pipe jacking guiding and correcting device and construction method, which can improve the correction effect, reduce secondary stratum disturbance, and avoid the occurrence of settlement.

[0006] In a first aspect, the present invention provides a pipe jacking guide and correction device, which includes a fixing device, a jacking pipe, a cutter head, and a correction device; The fixing device includes an annular casting plate and a wellhead guide frame, the annular casting plate is cast at the wellhead, and the wellhead guide frame is fixedly connected to the annular casting plate; The plurality of jacking pipes are connected in sequence, and the last jacking pipe is slidably connected to the fixing device, and adjacent jacking pipes are provided with a deviation correction device; The cutter head is mounted on the first jacking pipe; The correcting device includes a support frame and multiple groups of correcting components, the support frame is slidably connected to one of the jacking pipes, the outer diameter of the support frame is adapted to the inner diameter of the jacking pipe, and the support frame includes multiple supporting parts, multiple supporting parts are in a ring array, each group of correcting components is installed on one of the supporting parts, and each correcting component includes a driving member, a winding frame, a steel cable and a fixing member, the driving end of the driving member is connected to the rotating shaft of the winding frame, one end of the steel cable is wound around the rotating shaft, and the other end of the steel cable is fixedly connected to the fixing member, and the fixing member is fixed to the support frame located on the previous jacking pipe.

[0007] In an optional embodiment, the support frame is a cross support frame, the number of the support parts is four, and each of the support parts includes a first support section and a second support section, the first support section is vertically arranged to the second support section, and the number of the correction components is four groups.

[0008] In an optional embodiment, the driving member and the winding frame in the same group are arranged on one of the first supporting sections, each of the first supporting sections is provided with a through hole, and the steel cable passes through the through hole to be fixedly connected to the fixing member.

[0009] In an optional embodiment, the plurality of winding racks are arranged in a circular array with the center of the cross support rack, and the winding racks are close to the center of the cross support rack relative to the driving member.

[0010] In an optional embodiment, the pipe jacking guiding and correcting device further includes a plurality of U-shaped mounting members, and the U-shaped mounting members are installed on the second supporting section.

[0011] In an optional embodiment, steel bars are pre-embedded on the annular casting plate.

[0012] In a second aspect, the present invention provides a method for guiding and correcting a pipe jacking, using the pipe jacking guiding and correcting equipment described in the aforementioned embodiment. The method includes: constructing steel bars and pouring concrete at the wellhead to form an annular casting plate, and using bolts to lock the wellhead guide frame on the annular casting plate; installing the cutter head in front of the first pipe jacking, laying the first pipe jacking and the second pipe jacking in the well, using bolts to install the fixing part of the correction device on the support frame in the first pipe jacking, and installing the support frame in the same group as the fixing part in the second pipe jacking; starting the driving part to drive the winding frame to wind until the steel cable is fully tensioned.

[0013] In an optional embodiment, the jacking pipe guiding and correcting construction method further includes: after all jacking pipes are laid, pouring concrete onto the outside of the jacking pipes through the pouring holes reserved on the jacking pipes, and finally removing the correcting device.

[0014] In an optional embodiment, before the support frame and the deviation-correcting assembly are installed in the jacking pipe, the support frame and the deviation-correcting assembly are pre-installed outside the well.

[0015] In an optional embodiment, a driving member, a winding frame and a steel cable are installed on the support frame, one end of the steel cable is wound on the winding frame, and then the other end of the steel cable passes through the support frame and is connected to the fixing member.

[0016] Compared with the prior art, the present invention has the following advantages: This application provides a stable support force for the jacking pipe guiding and correcting equipment through a fixing device, and sets the correcting device between adjacent jacking pipes. The correcting device realizes the correcting function of the jacking pipe guiding and correcting equipment, preventing the jacking pipe guiding and correcting equipment from moving during the correction process, causing secondary stratum disturbance and causing subsidence. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a pipe jacking guide and correction device in some embodiments is shown; Figure 2 A schematic cross-sectional view of a pipe jacking guide and correction device in some embodiments is shown; Figure 3 shows an exploded schematic diagram of a fixing device in some embodiments; Figure 4 Schematic diagrams of the three-dimensional structure of the annular casting plate in some embodiments are shown; Figure 5 Schematic diagrams of the three-dimensional structure of the wellhead guide frame in some embodiments are shown; Figure 6 A schematic diagram of a first-view stereoscopic structure of a deviation correction device in some embodiments is shown; Figure 7 A schematic diagram of a second perspective stereoscopic structure of a deviation correction device in some embodiments is shown; Figure 8 Shown are schematic diagrams of the three-dimensional structure of the jacking pipe in some embodiments; Figure 9 Shown Figure 8 Enlarged view of part A in the middle; Figure 10 Shows a schematic diagram of the connection between the second supporting section, the U-shaped mounting member and the locking member in some embodiments; Figure 11 A schematic diagram of the connection between the deviation-correcting device and the jacking pipe in some embodiments is shown.

[0019] Description of main component symbols: 100-fixing device; 110-annular casting plate; 111-rebar; 112-pin rod; 113-nut; 120-wellhead guide frame; 121-positioning hole; 122-through hole; 123-mounting hole; 200-jacking pipe; 210-chute; 300-cutter head; 400-correcting device; 410-support frame; 411-support part; 4111-first supporting section; 4112-second supporting section; 4113-slider; 4114-U-shaped mounting piece; 4115-joining block; 4116-locking piece; 4117-positioning pin; 401-first surface; 402-second surface; 420-correcting assembly; 421-driving piece; 422-winding frame; 423-steel cable; 424-fixing piece; 425-fixed pulley. DETAILED DESCRIPTION

[0020] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0023] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0024] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0025] Example 1 This embodiment is applicable to underground pipeline construction. The underground pipeline construction method is: first dig a well from the ground, then enter the well, drill a hole from the well wall to one side, and finally pour concrete on the hole wall to form an underground pipeline. The cylindrical pipeline is used as an example for explanation.

[0026] This embodiment is mainly applicable to the process of drilling forward in the well wall and pouring concrete on the hole wall, with the hole position drilled first in the hole wall as the wellhead of the cylindrical pipe, and then continuing to drill forward from the wellhead.

[0027] It is understandable that the extension direction of the cylindrical pipe is determined as a predetermined drilling direction after surveying. This embodiment drills forward according to the predetermined drilling direction, taking the predetermined drilling direction being parallel to the ground surface as an example.

[0028] See also Figure 1 and Figure 2 This embodiment provides a pipe jacking guiding and correcting device, which includes a fixing device 100, a pipe jacking 200, a cutter head 300 and a correcting device 400.

[0029] The fixing device 100 includes an annular casting plate 110 and a wellhead guide frame 120. The outer shape of the fixing device 100 is adapted to the shape of the wellhead, and the inner diameter of the fixing device 100 is adapted to the outer diameter of the jacking pipe 200.

[0030] See also Figure 1 、 Figure 3 and Figure 4The annular casting plate 110 is cast at the wellhead, and steel bars 111 are pre-embedded on the annular casting plate 110. The steel bars 111 can improve the strength of the annular casting plate 110, ensure that the jacking pipe guiding and correcting equipment has stable support force during drilling, and avoid the occurrence of the jacking pipe 200 falling out.

[0031] The wellhead guide frame 120 and the annular casting plate 110 are positioned using pins 112 and then fixedly connected using bolts. Specifically, the pins 112 and nuts 113 are pre-embedded in the annular casting plate 110, and positioning holes 121 and through-holes 122 are provided in the wellhead guide frame 120. During installation, after aligning the positioning holes 121 with the pins 112, the wellhead guide frame 120 is pushed toward the annular casting plate 110. Once in place, the bolts are inserted through the through-holes 122 and tightened onto the nuts 113.

[0032] Of course, the nut 113 can also be replaced by a sleeve with an internal thread.

[0033] In this embodiment, the pin rod 112 has a positioning function, and the pin rod 112 also serves as a fixed connection measure between the wellhead guide frame 120 and the annular casting plate 110. During the drilling process, the pin rod 112 can prevent the longitudinal relative movement between the wellhead guide frame 120 and the annular casting plate 110.

[0034] The cooperation between the bolts and the nuts 113 realizes the adjustable fixation of the casting plate. This design is convenient for accurate alignment in the early stage of construction and can adapt to the installation requirements of different working conditions.

[0035] It is understood that the wellhead guide frame 120 is installed on the side of the annular casting plate 110 away from the jacking pipe 200. In this embodiment, it can be set that the wellhead guide frame 120 and the annular casting plate 110 are fixedly connected to form a fixing device 100, and the fixing device 100 is provided with a cylindrical mounting hole 123. The mounting hole 123 is located in the wellhead guide frame 120 and is adapted to the jacking pipe 200.

[0036] Annular casting plate 110 is securely connected to the wellhead via steel bars 111. Adjusting the position of annular casting plate 110 requires only rotating the locking screw. The design of pins 112 ensures accurate positioning. This integrated wellhead fixing system ensures accurate guidance during the initial construction phase while also withstanding the tremendous thrust during jacking. It effectively avoids the guidance deviation caused by wellhead deformation in traditional methods and provides a stable starting point for the entire pipe jacking project.

[0037] Please see further Figure 2 and Figure 5, multiple jacking pipes 200 are connected in sequence, and the last jacking pipe 200 is slidably connected to the fixing device 100. In this embodiment, the last jacking pipe 200 is slidably arranged in the mounting hole 123 of the fixing device 100, and the mounting hole 123 has a certain depth so that the hole wall of the mounting hole 123 provides guiding force and supporting force for the jacking pipe 200.

[0038] Each adjacent jacking pipe 200 is provided with a correcting device 400. For example, if there are N jacking pipes 200, the number of correcting devices 400 is N. In this embodiment, three jacking pipes 200 are used as an example for illustration, and the number of correcting devices 400 is three. The correcting device 400 located in the first jacking pipe 200 only needs to be installed with a support frame 410, and does not need to be installed with a correcting assembly 420.

[0039] During the continuous drilling process of the jacking pipe 200 guiding and correcting device 400, the jacking pipe 200 can be continuously laid after the third jacking pipe 200, so that the length of the jacking pipe 200 is continuously lengthened to meet the needs of the drilling process.

[0040] The cutter head 300 is mounted on the first top tube 200 . In this embodiment, the top tube 200 closest to the cutter head 300 is used as the first top tube 200 . The first top tube 200 is connected to the second top tube 200 , the third top tube 200 , and so on until the last top tube 200 is placed in the mounting hole 123 .

[0041] Please refer to Figure 2 、 Figure 6 and Figure 7 The correction device 400 includes a support frame 410 and multiple correction components 420. The following is an exemplary description using one correction device 400.

[0042] The support frame 410 is slidably connected to a top pipe 200 . The outer diameter of the support frame 410 is adapted to the inner diameter of the top pipe 200 . The support frame 410 includes a plurality of support portions 411 , which are arranged in a ring array.

[0043] In this embodiment, the support frame 410 may be a cross support frame, the number of support portions 411 is four, and each support portion 411 includes a first support section 4111 and a second support section 4112 , and the first support section 4111 and the second support section 4112 are vertically arranged.

[0044] The four first support sections 4111 constitute the main body of the cross support frame, and the four second support sections 4112 are respectively slidably connected to the top pipe 200, so that the cross support frame is supported in the top pipe 200 in a stable state.

[0045] Please refer to Figure 7 、 Figure 8 and Figure 9The sliding connection method here includes but is not limited to a slider and groove structure. A slider 4113 is set on the second support section 4112, and a groove 210 is set on the inner wall of the top pipe 200. The slider 4113 slides in conjunction with the groove 210. The cross-section of the slider 4113 is T-shaped, and such a structure is more stable.

[0046] Specifically, one end of the slide groove 210 is open and the other end is closed. In this embodiment, the opening of the slide groove 210 faces the previous top tube 200. Taking the second top tube 200 as an example, the opening of the slide groove 210 faces the first top tube 200. The cross support frame is placed from the second top tube 200 close to one end of the first top tube 200, and then the angle is adjusted so that the slider 4113 cooperates with the slide groove 210, and the cross support frame is continued to be pushed until it slides into place.

[0047] The sliding fit design of the closed end of the chute 210 simplifies on-site installation, facilitates maintenance and replacement of the correcting device 400, reduces equipment maintenance costs, and significantly improves construction efficiency. Furthermore, the sliding fit design enables precise component guidance and secure installation, facilitating position adjustment while withstanding vibration and impact during construction.

[0048] In actual use, there are two sliders 4113, and correspondingly, there are two slide grooves 210. The two slide grooves 210 are set on a fixed block along the axial direction of the top pipe 200. The fixed block and the top pipe 200 are fixed as a whole by bolts. During construction, they can be directly installed, which is convenient and quick.

[0049] The fixing block may be disposed in the middle of the top pipe 200 .

[0050] In other embodiments, the positions of the closed end and the open end of the chute 210 can be reversed. For example, in the second jacking pipe 200, the open end of the chute 210 faces the third jacking pipe 200, and the cross support frame moves the second jacking pipe 200 to be placed near one end of the third jacking pipe 200. This design can ensure the installation position of the cross support frame, and during the drilling process, the cross support frame will not be affected by the tension and move in the drilling direction.

[0051] Please continue reading Figure 6 and Figure 7 One end of each second support section 4112 is connected to the end of a corresponding first support section 4111. The four second support sections 4112 extend in the same direction and define an installation space. The main body of the cross support frame includes a first surface 401 and a second surface 402. The first surface 401 is located in the installation space, and the second surface 402 is opposite to the first surface 401.

[0052] This embodiment can also be set so that the first surface 401, the second surface 402 and the cutter head 300 are parallel to ensure uniform transmission of the correction force. This layout not only optimizes the internal space utilization of the equipment, but also ensures the accuracy and stability of the correction operation.

[0053] See also Figure 6 、 Figure 7 and Figure 10 Each support frame 410 further includes a plurality of U-shaped mounting members 4114 . The U-shaped mounting members 4114 are mounted on the second support section 4112 . The U-shaped mounting members 4114 are welded to the second support section 4112 , thereby improving the reliability of this embodiment.

[0054] In order to improve the connection reliability between the first support section 4111 and the second support section 4112, each support frame 410 also includes a plurality of splicing blocks 4115. The number of splicing blocks 4115 is consistent with the number of U-shaped mounting parts 4114 and corresponds one to one. One splicing block 4115 is fixed in the U-shaped groove of the U-shaped mounting part 4114, and the splicing block 4115 and the U-shaped mounting part 4114 are connected by bolts, and then a positioning pin 4117 is passed through the U-shaped mounting part 4114, the splicing block 4115 and the second support section 4112.

[0055] In actual use, the splicing blocks 4115 are configured as squares.

[0056] This embodiment uses four support parts 411 as an example. In some other embodiments, the number of support parts 411 is more than two. The shape of the support frame 410 is designed according to the number of support parts 411. On the premise of satisfying the supporting force, a group of correction components 420 are installed on each first support section 4111 of the support frame 410.

[0057] See also Figure 2 、 Figure 6 and Figure 7 Corresponding to the four support portions 411, there are four sets of correcting assemblies 420. From the current perspective, the four sets of correcting assemblies 420 are located at 0°, 90°, 180°, and 270° of the top pipe 200, respectively, thereby controlling the top pipe 200 to correct upward, downward, left, and right deviations.

[0058] Of course, adding the deviation correction component 420 can improve the accuracy of the deviation correction of the jacking pipe 200. There is no limit on the number of the deviation correction components 420.

[0059] Each group of correction components 420 is installed on a support part 411, and each correction component 420 includes a driving member 421, a winding frame 422, a steel cable 423 and a fixing member 424. The driving end of the driving member 421 is connected to the rotating shaft of the winding frame 422, one end of the steel cable 423 is wound around the rotating shaft, and the other end of the steel cable 423 is fixedly connected to the fixing member 424. The fixing member 424 is fixed to the support frame 410 located on the upper jacking pipe 200, that is, each driving member 421 individually controls the tension of the steel cable 423 in the group, thereby realizing multi-directional and precise correction of the jacking pipe 200.

[0060] Specifically, all the driving components 421 and the winding rack 422 are located in the installation space, and the driving components 421 and the winding rack 422 in the same group are arranged on a first support section 4111. Each first support section 4111 is provided with a through hole, and the steel cable 423 passes through the through hole and is fixedly connected to the fixing component 424.

[0061] The plurality of winding racks 422 are arranged in a circular array with the center of the cross support frame. The winding racks 422 are closer to the center of the cross support frame relative to the driving member 421 . The center of the cross support frame is located at the center of the four first support portions 411 .

[0062] The plurality of driving members 421 are arranged in a circular array with the center as the center of the circle, and the array radius of the driving members 421 is greater than the array radius of the winding frame 422 .

[0063] Similarly, the four fixing members 424 are also fixed at the 0°, 90°, 180° and 270° positions of the upper support frame 410. For example, the fixing member 424 at the 0° position is retracted under the action of the driving member 421, thereby achieving correction at the 0° position.

[0064] See also Figure 7 and Figure 10 In this embodiment, each support frame 410 may be provided with a locking member 4116. The number of the locking members 4116 is consistent with the number of the second support sections 4112 and corresponds one to one. A locking member 4116 is fixedly connected to a second support section 4112 by welding, and a fixing member 424 is fixedly connected to a locking member 4116 located in the same position. The fixing connection method here includes but is not limited to fixing with bolts.

[0065] Please continue reading Figure 2 、 Figure 6 and Figure 7In this embodiment, it can also be set that each set of correction components 420 also includes a fixed pulley 425, and the fixed pulley 425 is arranged on the second surface 402. The steel cable 423 passes through the through hole and abuts against the fixed pulley 425. Under the action of the fixed pulley 425, the ease of winding up the steel cable 423 is improved, the response speed is improved, and the correction resistance is reduced. In addition, the fixed pulley 425 can reduce the friction loss of the steel cable 423 and extend the service life of the steel cable 423.

[0066] The plurality of fixed pulleys 425 are arranged in a circular array with the center as the circle center, and the plurality of through holes are also arranged in a circular array with the center as the circle center, and the array radius of the through holes is smaller than the array radius of the fixed pulleys 425 .

[0067] After the installation of the correcting device 400 is completed, the center of the correcting device 400 is located on the axis of the jacking pipe 200, and the fixing parts 424 are arranged in a circular array with the position of the axis of the jacking pipe 200 as the center of the circle. The array radius of the fixing parts 424 is larger than the array radius of the through hole. At this time, the steel cable 423 is set at an angle to the axis of the jacking pipe 200. When the steel cable 423 is wound, the steel cable 423 moves on the fixed pulley 425, and the fixed pulley 425 rotates due to the action of friction.

[0068] In this embodiment, the steel cable 423 is disposed in the through hole, thereby protecting the steel cable 423 and ensuring effective transmission of the deviation-correcting force, thereby improving the reliability of this embodiment.

[0069] Based on the above content, this embodiment also provides a pipe jacking guide and deviation correction construction method, which uses the above-mentioned pipe jacking guide and deviation correction equipment, and the pipe jacking guide and deviation correction construction method includes the following steps: See also Figure 3 .

[0070] S100 . Rebar 111 is constructed at the wellhead and concrete is poured to form an annular casting plate 110 . The wellhead guide frame 120 is fastened to the annular casting plate 110 using bolts.

[0071] See also Figure 2 、 Figure 6 and Figure 7 .

[0072] S200. Install the cutter head 300 in front of the first jacking pipe 200. Lay the first jacking pipe 200 and the second jacking pipe 200 in the well. Use bolts to install the fixing member 424 of the correction device 400 on the support frame 410 in the first jacking pipe 200. Install the support frame 410 in the same group as the fixing member 424 in the second jacking pipe 200.

[0073] Before installing the support frame 410 and the deviation-correcting assembly 420 in the jacking pipe 200, the support frame 410 and the deviation-correcting assembly 420 are pre-installed outside the well. During pre-installation, the drive member 421, the reel 422, and the steel cable 423 are installed on the support frame 410. One end of the steel cable 423 is wound around the reel 422, and the other end of the steel cable 423 is passed through the support frame 410 and connected to the fixing member 424.

[0074] See also Figure 7 、 Figure 9 and Figure 11 The installation steps of the support frame 410 are as follows: insert the support frame 410 from the port of the top pipe 200 and align it with the slide groove 210 of the top pipe 200, so that the slider 4113 on the support frame 410 cooperates with the slide groove 210 on the inner wall of the top pipe 200, and the installation is completed after sliding into place.

[0075] To improve assembly stability, after sliding into place, the second supporting section 4112 is fastened to the fixing block of the top pipe 200 by means of bolts.

[0076] like Figure 11 As shown, the support frame 410 in the second top tube 200 is placed from the port close to the first top tube 200 (ie, the left port of the second top tube 200) and assembled.

[0077] See also Figure 2 Similarly, according to the needs of the drilling process, the third jacking pipe 200, the fourth jacking pipe 200... until the Nth jacking pipe 200 are laid, and a correction device 400 is installed between two adjacent jacking pipes 200 to achieve a correction effect.

[0078] It is understandable that only the support frame 410 of the deviation-correcting device 400 needs to be installed in the first jacking pipe 200 , and the support frame 410 serves as a fixed position for the subsequent deviation-correcting device 400 .

[0079] See also Figure 2 、 Figure 6 and Figure 7 .

[0080] S300. Start the driving member 421 to drive the reeling frame 422 to reel until the cable 423 is fully tensioned.

[0081] S400. After all jacking pipes 200 are laid, concrete is poured onto the exterior of the jacking pipes 200 through the reserved pouring holes on the jacking pipes 200, and the deviation-correcting device 400 is finally removed.

[0082] In this embodiment, after drilling is completed, concrete is poured outward through the reserved pouring holes of the jacking pipe 200 to ensure the strength of the soil layer around the jacking pipe and avoid the collapse of the soil layer during long-term use.

[0083] After the concrete strength reaches 80% of the preset strength, all the correcting devices 400 in the jacking pipe 200 are removed. After the correcting devices 400 are removed, a plurality of threaded holes remain on the inner wall of the jacking pipe 200 .

[0084] The step of removing the cutter head 300 is also included.

[0085] S600. Repair the inner wall of the top pipe 200.

[0086] In this embodiment, the threaded holes on the inner wall of the jacking pipe 200 are repaired to ensure the integrity of the jacking pipe 200 as a physical project and facilitate subsequent use.

[0087] This embodiment directly controls the preset drilling direction of the jacking pipe 200 by controlling the correction device in the jacking pipe 200. This is an active correction method. Compared with the traditional passive correction method, this embodiment has a faster response speed and higher accuracy, can achieve real-time dynamic adjustment, and effectively avoids the "overcorrection" phenomenon. It is particularly suitable for precise guidance control in long-distance jacking pipe 200 construction, and the effect is more obvious.

[0088] Example 2 See also Figure 2 、 Figure 6 and Figure 7 .

[0089] Based on the first embodiment, this embodiment is improved in that the pipe jacking guiding and correcting device further includes a monitoring device and a control device, and the control device is electrically connected to the monitoring device and the driving member 421 respectively.

[0090] When the top pipe 200 where the fixing part 424 is located deviates downward, the monitoring device monitors the offset and direction in real time, and sends the monitoring values to the control device. The control device calculates the angle and displacement that need to be corrected, controls the upper driving part 421 to start, drives the winding rack 422 to wind up the steel cable 423, so that the tension of the upper steel cable 423 is increased, and controls the lower driving part 421 to start in the reverse direction, drives the winding rack 422 to unwind the steel cable 423, so that the tension of the lower steel cable 423 is reduced.

[0091] In this embodiment, the pulling force on the bottom of the jacking pipe 200 is reduced and the pulling force on the top of the jacking pipe 200 is increased. The pulling force on the left and right sides remains unchanged, thereby forming an upward correcting torque, thereby correcting the jacking pipe 200 upward.

[0092] Of course, in addition to the single-direction correction control, there is also multi-directional correction control. For example, when the top pipe 200 where the fixing part 424 is located deviates to the lower right, the pulling force on the lower right side of the top pipe 200 can be reduced, and the pulling force on the upper left side of the top pipe 200 can be increased. Specifically, the steel cables 423 on the left and top are reeled in, and the steel cables 423 on the right and bottom are unreeled.

[0093] This multi-directional deviation correction control can more flexibly respond to various deviation situations that occur during the construction of the jacking pipe 200. According to the actual deviation direction and degree of the jacking pipe 200, the tension of different steel cables 423 can be accurately controlled to achieve deviation correction adjustment of the jacking pipe 200 in multiple directions such as horizontal and vertical directions, significantly improving the accuracy and flexibility of deviation correction, and can better adapt to the construction needs of the jacking pipe 200 under complex geological conditions, ensuring that the jacking pipe 200 is drilled accurately along the preset drilling direction.

[0094] The reeling length of each steel cable 423 needs to be calculated to ensure that the deviation correction direction is consistent with the preset drilling direction.

[0095] In this embodiment, the monitoring device can be a laser guidance system or a gyroscope or other device with real-time monitoring function, and the control device can be a conventional known device such as a computer for control, which will not be described in detail here.

[0096] This application provides a stable support force for the jacking pipe guiding and correcting equipment through a fixing device 100, and sets the correcting device 400 between adjacent jacking pipes 200 to prevent the jacking pipe guiding and correcting equipment from moving during the correction process, causing secondary stratum disturbance and resulting in subsidence.

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0098] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A pipe jacking guide and correction device, characterized in that: It includes a fixing device, a jacking pipe, a cutter head and a deviation-correcting device; The fixing device includes an annular casting plate and a wellhead guide frame, the annular casting plate is cast at the wellhead, and the wellhead guide frame is fixedly connected to the annular casting plate; The plurality of jacking pipes are connected in sequence, and the last jacking pipe is slidably connected to the fixing device, and adjacent jacking pipes are provided with a deviation correction device; The cutter head is mounted on the first jacking pipe; The correcting device includes a support frame and multiple groups of correcting components, the support frame is slidably connected to one of the jacking pipes, the outer diameter of the support frame is adapted to the inner diameter of the jacking pipe, and the support frame includes multiple supporting parts, multiple supporting parts are in a ring array, each group of correcting components is installed on one of the supporting parts, and each correcting component includes a driving member, a winding frame, a steel cable and a fixing member, the driving end of the driving member is connected to the rotating shaft of the winding frame, one end of the steel cable is wound around the rotating shaft, and the other end of the steel cable is fixedly connected to the fixing member, and the fixing member is fixed to the support frame located on the previous jacking pipe.

2. The pipe jacking guiding and correcting device according to claim 1, characterized in that: The support frame is a cross support frame, the number of the support parts is four, and each of the support parts includes a first support section and a second support section, the first support section and the second support section are arranged perpendicularly, and the number of the correction components is four groups.

3. The pipe jacking guiding and correcting device according to claim 2, characterized in that: The driving member and the winding frame in the same group are arranged on one of the first supporting sections. Each of the first supporting sections is provided with a through hole. The steel cable passes through the through hole and is fixedly connected to the fixing member.

4. The pipe jacking guide and correction device according to claim 3, characterized in that: The plurality of winding racks are arranged in a circular array with the center of the cross support rack in mind, and the winding racks are close to the center of the cross support rack relative to the driving member.

5. The pipe jacking guiding and correcting device according to any one of claims 2 to 4, characterized in that: It also includes a plurality of U-shaped mounting members, wherein the U-shaped mounting members are installed on the second supporting section.

6. The pipe jacking guiding and correcting device according to any one of claims 1 to 4, characterized in that: Steel bars are pre-embedded on the annular casting plate.

7. A pipe jacking guide and deviation correction construction method, characterized in that: Using the jacking pipe guiding and correcting equipment described in any one of claims 1 to 6, the jacking pipe guiding and correcting construction method includes: constructing steel bars and pouring concrete at the wellhead to form an annular casting plate, and using bolts to lock the wellhead guide frame on the annular casting plate; installing the cutter head in front of the first jacking pipe, laying the first jacking pipe and the second jacking pipe in the well, using bolts to install the fixing part of the correction device on the support frame in the first jacking pipe, and installing the support frame in the same group as the fixing part in the second jacking pipe; starting the driving part to drive the winding frame to reel until the steel cable is fully tensioned.

8. The pipe jacking guiding and deviation correction construction method according to claim 7, characterized in that: Also includes: After all the jacking pipes are laid, concrete is poured onto the outside of the jacking pipes through the pouring holes reserved on the jacking pipes, and finally the correction device is removed.

9. The pipe jacking guiding and deviation correction construction method according to claim 7, characterized in that: Before installing the support frame and the deviation-correcting assembly in the jacking pipe, the support frame and the deviation-correcting assembly are pre-installed outside the well.

10. The pipe jacking guiding and deviation correction construction method according to claim 9, characterized in that: Install the driving component, winding frame and steel cable on the supporting frame, wind one end of the steel cable around the winding frame, and then pass the other end of the steel cable through the supporting frame and connect it to the fixing component.

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