Tunnel underground excavation method supporting pipe jacking structure and construction method thereof

Abstract

The invention discloses a tunnel underground excavation method supporting pipe jacking structure and a construction method thereof.The tunnel underground excavation method supporting pipe jacking structure comprises a front bin body, mounting grooves are formed in the four side faces of the front bin body correspondingly, and first linear driving assemblies are installed at the bottoms of the four mounting grooves correspondingly; each first linear driving assembly is connected with a deviation rectifying assembly, each deviation rectifying assembly comprises at least three deviation rectifying rollers and a deviation rectifying belt tensioned on the outer sides of the deviation rectifying rollers at the same time, and the deviation rectifying rollers are linearly arranged in the advancing direction of the front bin body. The driving ends of the first linear driving assemblies are in transmission and rotating connection with the two ends of the deviation rectifying rollers of the corresponding deviation rectifying assemblies correspondingly. The problem that the pressure load is large due to the fact that deviation rectification is conducted on the front bin body of the pipe jacking machine only through the deviation rectification oil cylinder at present can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel construction, and in particular to a tunnel digging method supporting jacking pipe structure and a construction method thereof. Background Art

[0002] In the process of tunnel construction, especially in the construction of tunnels, rectangular pipe jacking machines are used more than shield pipe jacking machines due to the small footprint, no road excavation, no traffic closure and high degree of civilized construction. Pipe jacking construction is to first dig a launch shaft and a receiving shaft at intervals. The launch shaft is equipped with jacking equipment such as the main jacking cylinder. With the help of the thrust of the jacking equipment, the pipeline is pushed into the soil according to the designed slope until it is connected to the receiving shaft. A cutter head for breaking the soil is connected to the front of the pipeline.

[0003] The existing rectangular pipe jacking machine includes a front bin and a rear bin. The front bin is provided with a partition to separate it into a storage bin and a mud bin. A cutter head is provided at the front end of the mud bin. The mud in the mud bin is pumped out of the storage bin by a pump body or a spiral auger. The front bin and the rear bin are hinged. Due to soil changes, equipment failures, irregular operations and some specific factors in the construction process, deviation is prone to occur during the jacking process. Therefore, deviation correction cylinders are provided at the four corners between the front bin and the rear bin. There are multiple deviation correction cylinders, usually 12 cylinders, divided into four groups, which are responsible for adjusting the up, down, left and right deviations of the front bin respectively. The extension and retraction of each group of cylinders can be independently controlled by the control system of the pipe jacking machine to coordinately realize the deviation correction action.

[0004] However, when the correction equipment fails or the geological conditions are complex, especially when the soil layer contains hard rocks or boulders, or the soil is soft and unstable due to high water levels, the front bin body connected by the correction cylinder installed on the rear bin body will be a cantilever structure. At this time, the efficiency of correcting the front end of the pipe jacking machine upward only by the correction cylinder is low and the pressure load is large. Summary of the invention

[0005] The main purpose of the present application is to provide a tunnel digging method supporting pipe jacking structure and a construction method thereof, so as to improve the problem of large pressure load when the front bin of the pipe jacking machine is corrected only by a correction cylinder.

[0006] In order to achieve the above objectives, this application provides the following technologies: On the one hand, the present application provides a tunnel boring method supporting jacking pipe structure, including a front bin body, wherein the four sides of the front bin body are provided with installation grooves, and the bottoms of the four installation grooves are provided with No. 1 linear drive components, each of the No. 1 linear drive components is connected to a correction assembly, and each of the correction assemblies includes at least three correction rollers and a correction belt simultaneously tensioned on the outside of each correction roller, and each correction roller is arranged in a straight line along the forward direction of the front bin body, and the driving ends of each No. 1 linear drive component are respectively driven and rotatably connected to the two ends of the correction roller of the corresponding correction assembly.

[0007] Furthermore, the driving end of each of the No. 1 linear drive components is transmission-connected to an adapter frame, one end of each of the adapter frames is transmission-connected to the corresponding No. 1 linear drive component, and the other end is connected to a fixed frame, one end of each of the fixed frames is fixedly connected to the adapter frame, and the other end is rotationally connected to both ends of each of the correcting rollers of the corresponding correcting assembly.

[0008] Furthermore, each of the adapter frames includes an adapter plate and at least two evenly distributed No. 2 linear drive components, one side of the adapter plate is fixedly connected to the driving end of the corresponding No. 1 linear drive component, and each of the No. 2 linear drive components is installed on the other side of the adapter plate, and the driving end is rotatably connected to the fixed frame.

[0009] Furthermore, each adapter frame is provided with four No. 2 linear drive components, and the four No. 2 linear drive components are arrayed on the adapter plate in two rows and two columns.

[0010] Furthermore, the adapter frame also includes a plurality of limit rods, each of which includes a limit tube and a guide rod, one end of the limit tube is fixedly connected to the adapter plate, one end of the guide rod is adapted and slidably connected to the other end of the limit tube, and the other end of the guide rod is rotatably connected to the fixed frame.

[0011] Furthermore, a scraper is fixed to the rear end of the fixing frame, one end of the scraper is fixedly connected to the fixing frame, and the other end extends upwardly and obliquely toward the deviation-correcting belt and abuts against the rear side of the belt surface of the deviation-correcting belt.

[0012] Furthermore, the groove walls of the four mounting grooves are each provided with an inclined groove, and the groove bottoms of the four inclined grooves are each provided with a spring, one end of the spring abuts against the groove bottom of the inclined groove, and the other end abuts against a mudguard, one end of the mudguard abuts against the other end of the corresponding spring, and the other end extends out of the inclined groove, and the other end of the mudguard is adapted to and abuts against the rear side of the belt surface of the correction belt.

[0013] Furthermore, a slope is provided on the lower side of the scraper blade, and the slope is inclined upward toward the fender.

[0014] Furthermore, the belt surface of the deviation-correcting belt is provided with at least one groove, and the groove is extended in a ring shape.

[0015] On the other hand, the present application provides a construction method of a tunnel dark excavation method supporting a jacking pipe structure, which is applied to the aforementioned tunnel dark excavation method supporting a jacking pipe structure, comprising the following steps: Control the main top cylinder to start and push the front compartment forward; Monitor the deflection angle of the front bin body and control the start-up of the deflection correction cylinder to correct the deflection of the front bin body; Control the No. 1 linear drive assembly to start, push the corresponding correction assembly out of the installation slot, and make the correction belt move the front bin body in the reverse direction to perform correction operation; Adjust the extension length of the deviation correction cylinder and the driving end of the No. 1 linear drive assembly respectively until the deviation correction operation of the front bin body is completed.

[0016] Compared with the prior art, the present application can bring the following technical effects: the present invention arranges a No. 1 linear drive component on the four sides of the front bin body, and connects a correction assembly to each No. 1 linear drive component, and each correction assembly includes at least three correction rollers and a correction belt simultaneously tensioned on the outside of each correction roller, so that when the pipe jacking machine is corrected in a certain direction, the No. 1 linear drive component is used to drive and make the correction belt of the correction assembly press against the inner wall of the tunnel, and the reaction force of the inner wall of the tunnel is used to act on the front bin body to realize the correction operation of the front bin body. During the correction process, the correction belt rotates under the action of the friction force with the inner wall of the tunnel and the correction roller, thereby reducing the resistance to the advancement of the front bin body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings: Figure 1 It is a structural diagram of a tunnel digging method supporting jacking pipe structure of the present invention, in which the arrow indicates the forward direction of the front bin body; Figure 2 It is a first partial cross-sectional view of a tunnel digging method supporting jacking pipe structure of the present invention, in which the arrow indicates the forward direction of the front compartment body; Figure 3 yes Figure 2 Enlarged view of part A in the middle; Figure 4 It is a first partial exploded view of a tunnel dark excavation method supporting pipe jacking structure of the present invention; Figure 5 It is a second partial exploded view of a tunnel dark excavation method supporting pipe jacking structure of the present invention; Figure 6It is a second partial cross-sectional view of a tunnel dark excavation method supporting jacking pipe structure of the present invention; Figure 7 The present invention is a flow chart of a construction method of a tunnel dark excavation method supporting a top pipe structure.

[0018] In the figure: 1. front bin body; 11. mounting groove; 12. inclined groove; 13. pressure regulating hole; 2. No. 1 linear drive assembly; 21. No. 1 linear drive member; 22. positioning support rod; 221. slide rod; 222. slide cylinder; 3. deviation correction roller; 4. deviation correction belt; 41. groove; 5. adapter frame; 51. adapter plate; 52. No. 2 linear drive member; 521. No. 1 rotating seat; 522. No. 1 steel ball; 53. limit rod; 531. limit cylinder; 532. guide rod; 533. No. 2 rotating seat; 534. No. 2 steel ball; 6. fixed frame; 61. fixed plate; 62. fixed rod; 63. support plate; 7. scraper; 71. inclined plane; 8. spring; 81. mud guard; 9. pressure regulating seat; 91. pressure pipe; 92. pressure regulating plate; 93. horizontal linear drive member. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0021] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0023] In addition, the term "plurality" shall mean two or more.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] In the prior art, the construction method of rectangular pipe jacking for tunneling is usually: under the action of the main jacking cylinder in the starting working well (sometimes a relay room is required), the rectangular pipe is pushed from the starting working well to the receiving working well. Its principle is that the cutting disc installed on the front bin 1 of the front rectangular pipe jacking machine cuts the front soil, and the cut soil is transported to the starting working well through the pipeline and then hoisted out. At the same time, the main jacking hydraulic cylinder in the rear starting working well pushes synchronously, and the cylinder retracts after pushing a certain distance. After installing a new pipe in the starting working well, continue to push, and repeat this process until the rectangular pipe jacking machine and the pipe reach the receiving working well.

[0026] The cutting disc is installed on the front side of the front bin body 1, and the rear bin body is hinged on the rear side of the front bin body 1. A plurality of deviation correction cylinders are connected between the front bin body 1 and the rear bin body at the same time, and the deviation correction cylinders correct the forward direction of the front bin body 1.

[0027] In the prior art, for the automatic control of the deviation-correcting cylinder, the pipe jacking machine is equipped with an automatic guidance monitoring system, which can intelligently judge the measurement signal by a computer and automatically adjust the extension and retraction amount of the deviation-correcting cylinder to achieve the deviation-correcting operation.

[0028] On the one hand, the present application provides a tunnel boring method supporting jacking pipe structure, as described in detail below.

[0029] Reference Figures 1 to 3A tunnel boring method supporting pipe jacking structure comprises a front bin body 1, four sides of the front bin body 1 are provided with mounting grooves 11, the bottoms of the four mounting grooves 11 are provided with No. 1 linear drive components 2, each No. 1 linear drive component 2 is connected with a deviation correction assembly, each deviation correction assembly comprises at least three deviation correction rollers 3 and a deviation correction belt 4 simultaneously tensioned on the outside of each deviation correction roller 3, each deviation correction roller 3 is arranged in a straight line along the forward direction of the front bin body 1, and the driving ends of each No. 1 linear drive component 2 are respectively driven and rotatably connected to the two ends of the deviation correction roller 3 of the corresponding deviation correction assembly.

[0030] When it is necessary to correct the pipe jacking machine in a certain direction, start the No. 1 linear drive component 2 in the installation slot 11 in the corresponding direction, drive the No. 1 linear drive component 2 and make the correction assembly extend out of the installation slot 11, so that the correction belt 4 of the correction assembly is pressed against the inner wall of the tunnel, and the reaction force of the inner wall of the tunnel is used to act on the front warehouse body 1 to achieve the correction of the front warehouse body 1. At the same time, in this process, the relative No. 1 linear drive component 2 can be started, and the accurate correction operation can be achieved by the cooperation of the two relative correction assemblies. During the whole correction operation, The correcting cylinders connected to the front bin body 1 and the rear bin body cooperate with each other in operation, which greatly improves the correcting efficiency and reduces the workload of the correcting cylinders in cooperation with the existing correcting cylinders, thereby improving the problem of large pressure load on the front bin body of the pipe jacking machine that is currently corrected only by the correcting cylinders. In the process of the correcting belt 4 of the correcting assembly being pressed against the inner wall of the tunnel, the correcting belt 4 rotates under the action of the friction force with the inner wall of the tunnel and the correcting roller 3, thereby reducing the resistance to the advancement of the front bin body 1 and allowing the correcting assembly to maintain effective correcting support action during the advancement of the front bin body 1.

[0031] After the correction operation is completed, start the No. 1 linear drive component 2 to control the corresponding working correction assembly to be recovered into the installation groove 11. At this time, the outer belt surface of the correction belt 4, the corresponding notch plane of the installation groove 11, and the side surface of the front warehouse body 1 are located on the same plane, and the outer belt surface of the correction belt 4 is filled in the notch of the installation groove 11, which can relatively reduce the possibility of mud entering the installation groove 11 during the advancement of the front warehouse body 1.

[0032] The number of the correcting rollers 3 can be three, four, five or six, etc., and they are evenly spaced along the forward direction of the front chamber 1 to support and tension the correcting belt 4. That is, in the process of supporting and tensioning the correcting belt 4, a gap is formed between two adjacent correcting rollers 3. When the correcting belt 4 is pressed against the inner wall of the tunnel, part of the soil can squeeze the belt surface of the correcting belt 4 corresponding to the gap, thereby improving the support stability of the correcting belt 4 and the tension of the correcting belt 4. At the same time, the friction force of the correcting belt 4 is increased to ensure the smooth rotation of the correcting belt 4.

[0033] The deviation-correcting belt 4 can be made of materials such as rubber and silicone.

[0034] Reference Figure 4 and Figure 5 On the basis of the above-mentioned embodiment, at least one groove 41 is provided on the belt surface of the deviation-correcting belt 4, and the groove 41 is extended in a ring shape.

[0035] When the deviation-correcting belt 4 abuts against the inner wall of the tunnel and corrects the advancing front compartment body 1, the groove 41 can form a space for accommodating soil, thereby reducing the possibility that the deviation-correcting belt 4 encounters hard sand and cannot advance smoothly. At the same time, the groove 41 can increase the contact area with the inner wall of the tunnel, thereby enhancing the friction, so that the deviation-correcting belt 4 rotates smoothly and maintains the smooth advancement of the front compartment body 1. In addition, the soil that enters the groove 41 can guide the advancement of the deviation-correcting belt 4 through the groove 41, thereby maintaining the advancing direction of the deviation-correcting belt 4 and improving the correction efficiency and accuracy of the deviation-correcting belt 4.

[0036] The groove 41 may be a V-shaped groove, and the groove surface may be an arc surface structure. In addition, along the width direction of the deviation-correcting belt 4, the grooves 41 may be arranged at intervals of two, three, four, five, etc.

[0037] Reference Figures 1 to 3 The driving end of each No. 1 linear drive component 2 is transmission-connected to an adapter frame 5, one end of each adapter frame 5 is transmission-connected to the corresponding No. 1 linear drive component 2, and the other end is connected to a fixed frame 6, one end of each fixed frame 6 is fixedly connected to the adapter frame 5, and the other end is rotationally connected to the two ends of each correcting roller 3 of the corresponding correcting assembly.

[0038] The adapter frame 5 and the fixed frame 6 are used to realize the connection between the No. 1 linear drive component 2 and the corresponding correction assembly. The driving force of the No. 1 linear drive component 2 is directly transmitted to the adapter frame 5 and then indirectly acts on the correction roller 3, thereby reducing the energy loss and mechanical wear in the power transmission process, thereby improving the response speed and execution efficiency of the correction action; at the same time, since one end of the fixed frame 6 is fixed to the adapter frame 5 and the other end is rotatably connected to the correction roller 3, this structure helps to disperse and alleviate the stress and vibration generated in the correction process, thereby improving the overall stability and durability of the system.

[0039] Each No. 1 linear drive assembly 2 includes at least one No. 1 linear drive member 21 and at least two positioning support rods 22. The No. 1 linear drive member 21 can be a linear drive member such as an oil cylinder, an air cylinder, and an electric cylinder, and the cylinder body is fixedly installed at the bottom of the installation groove 11, and the piston end (driving end) extends vertically toward the notch of the installation groove 11. One end of the fixing frame 6 is fixedly connected to the driving end of the No. 1 linear drive member 21.

[0040] Among them, the No. 1 linear drive member 21 is connected to the automatic guidance monitoring system of the pipe jacking machine in communication, so that the automatic guidance monitoring system can accurately control the start and stop of each No. 1 linear drive member 21. The automatic guidance monitoring system and its control of each No. 1 linear drive member 21 are conventional technical means in the field, so the technical means will not be elaborated again.

[0041] Each positioning support rod 22 is arranged at a distance and evenly arranged. Each positioning support rod 22 includes a slide rod 221 and a slide cylinder 222; one end of the slide rod 221 is fixedly connected to the bottom of the installation groove 11, and the other end is inserted into the slide hole at one end of the slide cylinder 222, and the other end of the slide rod 221 is adapted to the slide hole of the slide cylinder 222 and slidably connected; the other end of the slide cylinder 222 is fixedly connected to one end of the fixing frame 6.

[0042] When the first linear drive member 21 drives the fixed frame 6 to move, the slide bar 221 and the slide cylinder 222 slide relative to each other, so as to support the moving fixed frame 6 at multiple points through multiple positioning support rods 22 to maintain the stability of the fixed frame 6.

[0043] On the basis of the above embodiment, the fixing frame 6 includes a fixing plate 61 with one side fixedly connected to the driving end of each No. 1 linear driving member 21, a plurality of fixing rods 62 with one end fixedly connected to the other side of the fixing plate 61, and two supporting plates 63. The plurality of fixing rods 62 are evenly arranged at both ends of the fixing plate 61 in the width direction, and the number of the fixing rods 62 respectively located at the two ends is equal to the number of the deviation correction rollers 3. The two supporting plates 63 are respectively fixedly connected to the other ends of the fixing rods 62 located at both ends of the fixing plate 61 in the width direction, and the two ends of the deviation correction roller 3 are respectively rotatably connected to the two supporting plates 63 through bearings.

[0044] When the first linear drive member 21 pushes the fixed frame 6 to move, the fixed frame 6 pushes the deviation correction assembly to move under the switching action of the adapter frame 5. Under the switching action of the fixed plate 61, the deviation correction assembly can be ensured to be stably supported relative to the inner wall of the tunnel.

[0045] Among them, the surrounding side walls of the fixed plate 61 respectively abut against the four groove walls of the installation groove 11, so that when the correction action is completed and the fixed frame 6 is recovered into the installation groove 11 under the action of the No. 1 linear drive member 21, the surrounding side walls of the fixed plate 61 respectively abut against the four groove walls of the installation groove 11, and the fixing plate 61 forms a relatively closed effect on the installation groove 11, which can reduce the possibility of soil entering the installation groove 11 and accumulating under the fixed plate 61.

[0046] Reference Figures 2 to 6Each adapter frame 5 includes an adapter plate 51 and at least two evenly distributed No. 2 linear drive components 52. One side of the adapter plate 51 is fixedly connected to the driving end of the corresponding No. 1 linear drive component 2, and each No. 2 linear drive component 52 is installed on the other side of the adapter plate 51, and the driving end is rotatably connected to the fixed frame 6.

[0047] While the deviation correction operation is being performed by the No. 1 linear drive component 2, auxiliary angle adjustment can be performed by each No. 2 linear drive component 52 corresponding to the No. 2 linear drive component 52. When the driving ends of each No. 2 linear drive component 52 are extended to different lengths, the fixed frame 6 and the deviation correction assembly can be driven to change their angles, thereby changing the contact position between the deviation correction assembly and the inner wall of the tunnel, so as to perform precise positioning and adjustment as needed, thereby enhancing the flexibility and adaptability of the entire system.

[0048] Among them, the No. 2 linear drive member 52 can be a linear drive member such as an oil cylinder, a gas cylinder, and an electric cylinder. The No. 2 linear drive member 52 is connected to the automatic guidance monitoring system of the pipe jacking machine in communication, so that the start and stop of each No. 2 linear drive member 52 can be accurately controlled by the automatic guidance monitoring system. The automatic guidance monitoring system and its control of each No. 2 linear drive member 52 are conventional technical means in the field, so this technical means will not be elaborated again.

[0049] A plurality of No. 1 rotating seats 521 are fixedly connected to one side of the fixed plate 61 of the fixed frame 6, and a No. 1 steel ball 522 is rotatably connected to the side of each No. 1 rotating seat 521 away from the fixed plate 61. The number of the plurality of No. 1 rotating seats 521 is equal to the number of the No. 2 linear drive members 52, and they are arranged one by one, and the driving end of each No. 2 linear drive member 52 is fixedly connected to each No. 1 steel ball 522 one by one.

[0050] When the deviation correction operation is performed through each No. 2 linear driving member 52 , the No. 1 steel ball 522 adaptively rotates relative to the No. 1 rotating seat 521 connected thereto.

[0051] Each adapter frame 5 is provided with four second linear drive components 52 , and the four second linear drive components 52 are arrayed on the adapter plate 51 in two rows and two columns.

[0052] Along the forward direction of the front warehouse body 1, there are two rows of No. 2 linear drive members 52, and each row of No. 2 linear drive members 52 is provided with two No. 2 linear drive members 52. When performing the correction operation, the four No. 2 linear drive members 52 are coordinated and controlled so that the driving ends of the four No. 2 linear drive members 52 have different extension lengths, so that the fixed frame 6 and the correction assembly undergo more precise angle changes, and more precise control and positioning of the correction assembly can be achieved; at the same time, the four No. 2 linear drive members 52 distributed in an array provide more balanced support and driving force, so that the correction assembly is more stable when moving or adjusting its position; in addition, since the four No. 2 linear drive members 52 share the load, the load capacity of the adapter frame 5 is significantly improved, so that the adapter frame 5 can carry heavier or larger equipment or components, thereby expanding the application range of the system.

[0053] Reference Figures 2 to 6 The adapter frame 5 also includes a plurality of limit rods 53, each of which includes a limit tube 531 and a guide rod 532, one end of the limit tube 531 is fixedly connected to the adapter plate 51, one end of the guide rod 532 is adapted and slidably connected to the other end of the limit tube 531, and the other end of the guide rod 532 is rotatably connected to the fixed frame 6.

[0054] When auxiliary angle adjustment of the fixed frame 6 and the correction assembly is performed through each No. 2 linear drive component 52, the guide rod 532 slides relative to the limiting cylinder 531 and supports the fixed frame 6 at the same time to ensure the stability of the support of the fixed frame 6 and reduce the possibility of damage to each No. 2 linear drive component 52 due to force.

[0055] A plurality of No. 2 rotating seats 533 are fixedly connected to one side of the fixing plate 61 of the fixing frame 6, and a No. 2 steel ball 534 is rotatably connected to the side of each No. 2 rotating seat 533 away from the fixing plate 61. The number of the plurality of No. 2 rotating seats 533 is equal to the number of the No. 2 steel balls 534, and they are arranged one by one, and the other end of each guide rod 532 is fixedly connected to each No. 2 steel ball 534.

[0056] When the deviation correction operation is performed through each No. 2 linear driving member 52 , the No. 2 steel ball 534 adaptively rotates relative to the No. 2 rotating seat 533 connected thereto.

[0057] A stepped hole is formed through the limiting cylinder 531 , and one end of the guide rod 532 is in a “T” shape so as to be adapted and slidably connected to the stepped hole of the limiting cylinder 531 .

[0058] Reference Figures 2 to 5 A scraper blade 7 is fixed to the rear end of the fixing frame 6. One end of the scraper blade 7 is fixedly connected to the fixing frame 6, and the other end extends upwardly toward the correcting belt 4 and abuts against the rear side of the belt surface of the correcting belt 4.

[0059] When the correcting belt 4 of the correcting assembly is adjusted at any angle to perform the correcting operation on the front bin body 1, the scraper plate 7 is adjusted in angle simultaneously with the fixing frame 6. As the front bin body 1 moves forward, the correcting belt 4 rotates due to the reaction force, and the mud adhered to the correcting belt 4 is scraped off by the scraper plate 7, thereby ensuring the neatness of the correcting belt 4.

[0060] A plurality of protrusions adapted to and extending into the groove 41 are formed on the scraper blade 7 .

[0061] The groove walls of the four mounting grooves 11 are each provided with an inclined groove 12, and the groove bottoms of the four inclined grooves 12 are each provided with a spring 8, one end of the spring 8 abuts against the groove bottom of the inclined groove 12, and the other end abuts against a mudguard 81, one end of the mudguard 81 abuts against the other end of the corresponding spring 8, and the other end extends out of the inclined groove 12, and the other end of the mudguard 81 is adapted to and abuts against the rear side of the belt surface of the deviation correction belt 4.

[0062] When the deviation correction operation of the front warehouse body 1 is not being performed, under the action of the No. 1 linear drive component 2, the deviation correction belt 4 is recovered to the slot of the mounting groove 11. At this time, the other end of the mudguard 81 is adapted to and abuts against the rear side of the belt surface of the deviation correction belt 4. During the forward movement of the front warehouse body 1, when the mud on the inner wall of the tunnel is scraped off by the rear side slot wall of the mounting groove 11 and enters the mounting groove 11, it can be blocked by the mudguard 81 extending out of the inclined slot 12, thereby reducing the possibility of mud entering the mounting groove 11.

[0063] The lower side of the scraper 7 is provided with an inclined surface 71, which is inclined upward toward the fender 81. When the deflection correction operation is completed and the deflection correction belt 4 is recovered at the notch of the mounting groove 11 under the action of the first linear drive assembly 2, the inclined surface 71 abuts against the other end of the fender 81 and applies pressure to the fender 81, so that the spring 8 is compressed and the fender 81 slides and retracts into the inclined groove 12.

[0064] Reference Figures 2 to 5 On the basis of the above embodiment, pressure regulating holes 13 are provided through the four side walls of the front bin body 1 , and the pressure regulating holes 13 on the four side walls are located at the front end of the front bin body 1 relative to the corresponding mounting grooves 11 .

[0065] The four inner walls of the front chamber body 1 are all fixedly connected with a pressure regulating seat 9, and a through hole is formed through the pressure regulating seat 9, one end of the through hole is connected to the corresponding pressure regulating hole 13, and the other end is connected to a pressure pipe 91 with a pressure pump. A transverse sliding hole is formed on the side wall of the pressure regulating seat 9, the transverse sliding hole is connected to the through hole, and a pressure regulating plate 92 is adapted and slidably connected to the transverse sliding hole.

[0066] Transverse linear drive members 93 are fixedly mounted on the four inner walls of the front chamber body 1 , and the driving ends of the four transverse linear drive members 93 are fixedly connected to the ends of the four pressure regulating plates 92 one by one.

[0067] Among them, the transverse linear drive member 93 can be an electric cylinder, a pneumatic cylinder, etc., and is connected to the automatic guidance monitoring system of the pipe jacking machine to accurately control the start and stop of each transverse linear drive member 93 through the automatic guidance monitoring system. The automatic guidance monitoring system and its control of each transverse linear drive member 93 are conventional technical means in the field, so this technical means will not be elaborated again.

[0068] When the deviation correction operation is performed by the deviation correction assembly, it can be started by controlling the corresponding horizontal linear drive member 93, pulling the pressure regulating plate 92 to open the pressure regulating hole 13, and the pressure pump will pass the mud or mortar through the pressure pipe 91, the pressure regulating seat 9 and the pressure regulating hole 13 in sequence and then spray it under the pipe jacking machine at high pressure for filling, and further deviation correction operation of the front bin body 1 is achieved through the reaction force between it and the soil.

[0069] On the other hand, the present application provides a construction method for supporting a top pipe structure by a tunnel boring method, as described in detail below.

[0070] Reference Figure 7 A construction method for a tunnel dark excavation method supporting a top pipe structure, applied to the tunnel dark excavation method supporting a top pipe structure, comprises the following steps: Control the main top oil cylinder to start and push the front compartment body 1 forward; Monitor the deflection angle of the front bin body 1, and control the start-up of the deviation correction cylinder to correct the deviation of the front bin body 1; Control the No. 1 linear drive component to start, push the corresponding correcting assembly to extend out of the installation slot 11, so that the correcting belt 4 moves the front bin body 1 in the opposite direction to perform the correcting operation; in this process, the support angle of the correcting assembly can be adjusted by controlling the extension and retraction of each No. 1 linear drive component 21 and each No. 2 linear drive component 52.

[0071] Adjust the extension lengths of the deviation-correcting oil cylinder and the driving end of the No. 1 linear drive assembly 2 respectively until the deviation-correcting operation of the front bin body 1 is completed.

[0072] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tunnel boring method supporting pipe jacking structure, comprising a front compartment (1), characterized in that: The four sides of the front bin body (1) are provided with mounting grooves (11), and the bottoms of the four mounting grooves (11) are each provided with a No. 1 linear drive assembly (2), and each of the No. 1 linear drive assemblies (2) is connected to a deflection correction assembly, and each of the deflection correction assemblies comprises at least three deflection correction rollers (3) and a deflection correction belt (4) simultaneously tensioned on the outside of each deflection correction roller (3), and each of the deflection correction rollers (3) is arranged in a straight line along the forward direction of the front bin body (1), and the driving ends of each of the No. 1 linear drive assemblies (2) are respectively driven and rotationally connected to the two ends of the deflection correction roller (3) of the corresponding deflection correction assembly.

2. A tunnel boring method supporting pipe jacking structure as claimed in claim 1, characterized in that: The driving end of each of the first linear drive components (2) is transmission-connected to an adapter frame (5); one end of each of the adapter frames (5) is transmission-connected to the corresponding first linear drive component (2), and the other end is connected to a fixed frame (6); one end of each of the fixed frames (6) is fixedly connected to the adapter frame (5), and the other end is rotationally connected to the two ends of each of the deviation correction rollers (3) of the corresponding deviation correction assembly.

3. A tunnel boring method supporting pipe jacking structure as claimed in claim 2, characterized in that: Each of the adapter frames (5) comprises an adapter plate (51) and at least two evenly distributed No. 2 linear drive members (52), one side of the adapter plate (51) is fixedly connected to the driving end of the corresponding No. 1 linear drive assembly (2), and each of the No. 2 linear drive members (52) is installed on the other side of the adapter plate (51), and the driving end is rotatably connected to the fixed frame (6).

4. A tunnel boring method supporting pipe jacking structure as claimed in claim 3, characterized in that: Each adapter frame (5) is provided with four No. 2 linear drive components (52), and the four No. 2 linear drive components (52) are arrayed on the adapter plate (51) in two rows and two columns.

5. A tunnel boring method supporting pipe jacking structure as claimed in claim 3, characterized in that: The adapter frame (5) further comprises a plurality of limiting rods (53), each of the limiting rods (53) comprising a limiting cylinder (531) and a guide rod (532), one end of the limiting cylinder (531) being fixedly connected to the adapter plate (51), one end of the guide rod (532) being adapted to and slidably connected to the other end of the limiting cylinder (531), and the other end of the guide rod (532) being rotatably connected to the fixed frame (6).

6. A tunnel boring method supporting pipe jacking structure as claimed in claim 2, characterized in that: A scraper blade (7) is fixed to the rear end of the fixing frame (6); one end of the scraper blade (7) is fixedly connected to the fixing frame (6), and the other end of the scraper blade (7) extends upwardly and obliquely toward the deviation-correcting belt (4) and abuts against the rear side of the belt surface of the deviation-correcting belt (4).

7. A tunnel boring method supporting pipe jacking structure as claimed in claim 6, characterized in that: The groove walls of the four installation grooves (11) are each provided with an inclined groove (12), and the groove bottoms of the four inclined grooves (12) are each provided with a spring (8), one end of the spring (8) abuts against the groove bottom of the inclined groove (12), and the other end abuts against a fender (81), one end of the fender (81) abuts against the other end of the corresponding spring (8), and the other end extends out of the inclined groove (12), and the other end of the fender (81) is adapted to and abuts against the rear side of the belt surface of the deviation correction belt (4).

8. A tunnel boring method supporting pipe jacking structure as claimed in claim 7, characterized in that: The lower side of the fender (7) is provided with an inclined surface (71), and the inclined surface (71) is inclined upwards towards the fender (81).

9. A tunnel boring method supporting pipe jacking structure according to any one of claims 1 to 8, characterized in that: The belt surface of the deviation-correcting belt (4) is provided with at least one groove (41), and the groove (41) is arranged to extend in a ring shape.

10. A construction method for supporting a jacking pipe structure by tunneling, characterized in that: A tunnel boring method supporting pipe jacking structure as claimed in any one of claims 1 to 9, comprising the following steps: Control the main top oil cylinder to start, pushing the front compartment body (1) forward; Monitoring the deflection angle of the front bin body (1) and controlling the start-up of the deflection correction cylinder to correct the deflection of the front bin body (1); Controlling the first linear drive assembly (2) to start, pushing the corresponding deviation correction assembly to extend out of the installation slot (11), so that the deviation correction belt (4) moves the front bin body (1) in the reverse direction to perform the deviation correction operation; The extension lengths of the deviation correction oil cylinder and the driving end of the first linear drive assembly (2) are adjusted respectively until the deviation correction operation of the front bin body (1) is completed.

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