Method for rectifying deviation of mechanical pipe jacking equipment

Abstract

The present invention discloses a deviation correction method for mechanical pipe jacking equipment, which relates to the technical field of underground space excavation. The mechanical pipe jacking equipment includes a first mechanical pipe jacking and a second mechanical pipe jacking for excavation, the first mechanical pipe jacking having a machine head and a first conveying pipeline, the first conveying pipeline being connected to the rear side of the machine head; the method includes: determining the position and posture of the machine head; transforming the second mechanical pipe jacking into a deviation correction pipe jacking; causing the deviation correction pipe to be excavated in the reverse direction of the excavation direction of the first mechanical pipe jacking to the machine head; a traction mechanism reaches the machine head through the deviation correction pipe; and correcting the position and posture of the first mechanical pipe jacking by the traction mechanism. The deviation correction method for mechanical pipe jacking equipment provided by the present invention can quickly and stably correct the position and posture of mechanical pipe jacking.

Description

Technical Field

[0001] The present invention relates to the technical field of underground space excavation, and in particular to a deviation correction method for mechanical pipe jacking equipment. Background Art

[0002] Urban construction and development are inseparable from the development and utilization of underground space. In the development of underground space, mechanical pipe jacking can effectively speed up the efficiency of geotechnical excavation. However, since the mechanical pipe jacking machine head is equipped with a boring cutter head and its driving equipment, it has a large deadweight. During the pipe jacking process, especially in soft soil layers, the pipe jacking machine head is prone to deviation and sinking in the depth direction under the action of its own weight and driving force. After the pipe jacking in the soft soil layer deviates, if measures such as grouting to reinforce the soil at the bottom of the pipe are not taken, the jacking process often causes the pipe jacking to continue to sink if only the direction is adjusted by telescopic adjustment of the pipe jacking machine head's correction cylinder. Severe deviation from the design line will cause adjacent pipe joints to be squeezed and damaged in the pressure zone of the pipe near the center of curvature, and the pipe interfaces on the side away from the center of curvature will detach from each other and leak, affecting the quality of pipeline construction and preventing the machine head from smoothly entering the receiving well.

[0003] To address the above issues, the current method generally adopted is to correct the deviation of the tunneling machine head by improving the soil quality in front of the machine head, grouting and reinforcing the soil at the bottom of the pipe after the tunneling machine head deviates in the soft soil layer. However, this method must meet the following conditions at the same time: (1) grouting and reinforcing the soft soil layer along the tunneling machine head; (2) long-distance correction transition. Mechanical tunneling machine head correction adjusts the machine head deflection by extending and retracting the correction cylinders at the front and rear shells. The correction is slow and the effect is difficult to guarantee. If the remaining tunneling machine head section does not meet the correction transition distance requirements, it is not feasible. Summary of the Invention

[0004] The purpose of the present invention is to provide a deviation correction method for mechanical pipe jacking equipment, which can quickly and stably correct the position and posture of the mechanical pipe jacking equipment.

[0005] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0006] The present invention provides a method for correcting deviation of a mechanical pipe jacking device, wherein the mechanical pipe jacking device includes a first mechanical pipe jacking device and a second mechanical pipe jacking device for excavation, wherein the first mechanical pipe jacking device has a machine head and a first conveying pipeline, wherein the first conveying pipeline is connected to the rear side of the machine head; the method includes:

[0007] determining the position and attitude of the nose;

[0008] Transforming the second mechanical pipe jacking into a deviation-correcting pipe jacking;

[0009] Excavating the deviation-correcting jacking pipe and the second conveying pipeline connected to the deviation-correcting jacking pipe in the reverse direction of the excavation direction of the first mechanical jacking pipe to the machine head;

[0010] The traction mechanism reaches the machine head through the deviation-correcting jacking pipe;

[0011] The position and posture of the first mechanical jacking pipe are corrected by the traction mechanism.

[0012] In a preferred embodiment, determining the position and posture of the nose comprises the following steps:

[0013] The three-dimensional coordinates of the machine head relative to the excavation reference point are obtained by a position sensor provided on the machine head;

[0014] The attitude inclination angle of the aircraft head relative to the horizontal plane is obtained through an attitude sensor arranged on the aircraft head.

[0015] In a preferred embodiment, the second mechanical jacking pipe includes: a movable housing, a fixed housing, an angle adjustment mechanism, a cutting disc, a power mechanism, and an excavation transmission mechanism, wherein the movable housing is movably arranged on the fixed housing through the angle adjustment mechanism, and the cutting disc, the power mechanism, and the excavation transmission mechanism are all arranged in the movable housing;

[0016] The second mechanical pipe jacking is transformed into a deviation-correcting pipe jacking, comprising the following steps:

[0017] The cutting disc, the power mechanism, and the excavation transmission mechanism are removed from the movable shell, and the movable shell, the fixed shell, and the angle adjustment mechanism are retained to form the deviation-correcting jacking pipe. The inner diameter of the movable shell and the inner diameter of the fixed shell are both larger than the outer diameter of the machine head.

[0018] In a preferred embodiment, the step of digging the deviation-correcting jacking pipe in the reverse direction of the digging direction of the first mechanical jacking pipe to the machine head comprises the following steps:

[0019] Determining the buried position of the deviation-correcting jacking pipe in the front receiving well in the excavation direction of the first mechanical jacking pipe;

[0020] The deviation-correcting jacking pipe is manually excavated in reverse from the receiving well toward the position of the machine head;

[0021] The movable shell and the fixed shell together form a shell, and the deviation-correcting jacking pipe is excavated to the shell and is sleeved on the outside of the machine head and the first conveying pipeline.

[0022] In a preferred embodiment, after the deviation-correcting jacking pipe is excavated until the housing is sleeved on the outside of the machine head and the first conveying pipeline, the following steps are further included:

[0023] The angle between the movable shell and the fixed shell is adjusted by the angle adjustment mechanism to prevent the movable shell from touching the machine head and the first conveying pipeline.

[0024] In a preferred embodiment, the mechanical pipe jacking equipment includes a grouting pipeline, which passes through the second conveying pipeline and is laid along the second conveying pipeline.

[0025] In a preferred embodiment, correcting the position and posture of the first mechanical pipe jacking by the traction mechanism includes the following steps:

[0026] The stabilizing slurry is injected into the second conveying pipeline and the outer wall of the deviation-correcting jacking pipe and the stratum soil by pressure grouting through the grouting pipeline. The stabilizing slurry can solidify to support the second conveying pipeline.

[0027] In a preferred embodiment, the traction mechanism includes a winch, and the pulling rope of the winch passes through the deviation-correcting jacking pipe and is connected to the machine head.

[0028] In a preferred embodiment, correcting the position and posture of the first mechanical pipe jacking by the traction mechanism includes the following steps:

[0029] The handpiece is pulled by the pulling rope until the handpiece returns to a predetermined position and posture.

[0030] In a preferred embodiment, the method further comprises:

[0031] The angle adjustment mechanism is disassembled from the deflection-correcting jacking pipe, and the movable shell and the fixed shell of the deflection-correcting jacking pipe serve as outer templates of the jacking pipe structure to allow the receiving well on the front side of the excavation direction of the first mechanical jacking pipe to penetrate.

[0032] The characteristics and advantages of the present invention are:

[0033] The correction method of the mechanical pipe jacking equipment provided by the present invention, after determining the position and posture of the machine head, reverse excavation is carried out through the correction pipe jacking to reach the machine head, and the traction mechanism reaches the machine head through the correction pipe jacking. When the machine head is corrected, the machine head does not need to adjust its angle by itself, thereby avoiding further sinking of the machine head or causing greater pressure on the surrounding soil layer; the mechanical pipe jacking equipment can simultaneously inject slurry into the correction pipe jacking and the second conveying pipeline to support the correction pipe jacking and the second conveying pipeline, improve stability, and prevent the correction pipe jacking from sinking and deviating when the machine head is towed. The correction pipe jacking of the present invention is formed by modifying the mechanical pipe jacking, and does not require special equipment. After the position of the machine head is corrected, the movable shell and the fixed shell of the correction pipe jacking will serve as the outer template of the pipe jacking structure to realize the penetration of the receiving well pipeline, thereby preventing the waste of equipment and materials, reducing construction costs, and improving construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 Shown is a structural schematic diagram of a second mechanical pipe jacking device in the correction method of the mechanical pipe jacking equipment of the present invention.

[0036] Figure 2 Shown is a structural schematic diagram of the correction pipe jacking method of the mechanical pipe jacking equipment of the present invention.

[0037] Figure 3 Shown is a schematic diagram of the positional relationship structure of the correction method for the mechanical pipe jacking equipment of the present invention. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to mechanical or electrical connections, internal communication between two elements, direct connection, or indirect connection through an intermediary. Those of ordinary skill in the art will understand the specific meanings of these terms based on the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0039] See also Figures 1 to 3 As shown, an embodiment of the present invention provides a method for correcting deviation of a mechanical pipe jacking device, wherein the mechanical pipe jacking device includes a first mechanical pipe jacking device 1 and a second mechanical pipe jacking device 2 for excavation, wherein the first mechanical pipe jacking device 1 includes a machine head 11 and a first conveying pipeline 12, wherein the first conveying pipeline 12 is connected to the rear side of the machine head 11; the method includes:

[0040] S1: Determine the position and posture of the nose 11;

[0041] S2: transforming the second mechanical jacking pipe 2 into a deviation-correcting jacking pipe 3;

[0042] S3: The deflection-correcting jacking pipe 3 and the second conveying pipeline 31 connected to the deflection-correcting jacking pipe 3 are excavated in the reverse direction of the excavation direction of the first mechanical jacking pipe 1 to the machine head 11;

[0043] S4: The traction mechanism reaches the machine head 11 through the deviation-correcting jacking pipe 3;

[0044] S5: Correcting the position and posture of the first mechanical jacking pipe 1 through the traction mechanism.

[0045] The following further describes the specific steps of the deviation correction method of the mechanical pipe jacking equipment according to the embodiment of the present invention, wherein:

[0046] In a preferred embodiment, determining the position and posture of the nose 11 includes the following steps:

[0047] Step 101: Obtain the three-dimensional coordinates of the machine head 11 relative to the excavation reference point through a position sensor provided on the machine head 11;

[0048] Step 102 : Obtain the attitude inclination angle of the aircraft head 11 relative to the horizontal plane through the attitude sensor provided on the aircraft head 11 .

[0049] In a preferred embodiment, the second mechanical jacking pipe 2 includes: a movable housing 21, a fixed housing 22, an angle adjustment mechanism 23, a cutting disc 24, a power mechanism 25, and an excavation transmission mechanism 26. The movable housing 21 is movably mounted on the fixed housing 22 via the angle adjustment mechanism 23, and the cutting disc 24, the power mechanism 25, and the excavation transmission mechanism 26 are all disposed within the movable housing 21.

[0050] The second mechanical jacking pipe 2 is transformed into the deviation-correcting jacking pipe 3, comprising the following steps:

[0051] Step 201: Remove the cutting disc 24, the power mechanism 25, and the excavation transmission mechanism 26 from the movable shell 21, and retain the movable shell 21, the fixed shell 22, and the angle adjustment mechanism 23 to form the correction jacking pipe 3. The inner diameter of the movable shell 21 and the inner diameter of the fixed shell 22 are both larger than the outer diameter of the machine head 11.

[0052] In a preferred embodiment, the process of digging the deviation-correcting jacking pipe 3 in the reverse direction of the digging direction of the first mechanical jacking pipe 1 to the machine head 11 includes the following steps:

[0053] Step 301: Determine the buried position of the deviation-correcting jacking pipe 3 in the front receiving well of the first mechanical jacking pipe 1 in the excavation direction;

[0054] Step 302: The deviation-correcting jacking pipe 3 is manually excavated in reverse from the receiving well toward the position of the machine head 11;

[0055] Step 303 : The movable shell 21 and the fixed shell 22 together form a shell 21 a , and the deviation-correcting jacking pipe 3 is excavated until the shell 21 a is sleeved on the outside of the machine head 11 and the first conveying pipeline 12 .

[0056] In a preferred embodiment, after the deviation-correcting jacking pipe 3 is excavated until the movable shell 21 is sleeved on the outside of the machine head 11, the following steps are also included:

[0057] The angle between the movable housing 21 and the fixed housing 22 is adjusted by the angle adjustment mechanism 23 to prevent the movable housing 21 from touching the machine head 11 and the first conveying pipeline 12 .

[0058] In a preferred embodiment, the mechanical pipe jacking equipment includes a grouting pipeline, which passes through the second conveying pipeline 31 and is laid along the second conveying pipeline 31.

[0059] In a preferred embodiment, the position and posture of the first mechanical jacking pipe 1 are corrected by the traction mechanism, including the following steps:

[0060] Step 501A: injecting stabilizing slurry into the space between the second conveying pipeline 31 and the outer wall of the deviation-correcting jacking pipe 3 and the ground soil through the grouting pipeline by pressure grouting. The stabilizing slurry can solidify to support the second conveying pipeline 31 .

[0061] In a preferred embodiment, the traction mechanism includes a winch, and the pulling rope of the winch passes through the deviation-correcting jacking pipe 3 and is connected to the machine head 11.

[0062] In a preferred embodiment, the position and posture of the first mechanical jacking pipe 1 are corrected by the traction mechanism, including the following steps:

[0063] Step 501B: Pull the machine head 11 by pulling the rope until the machine head 11 returns to the predetermined position and posture.

[0064] In a preferred embodiment, the method further comprises:

[0065] S6: The angle adjustment mechanism 23 is disassembled from the self-correcting jacking pipe 3, and the movable shell 21 and the fixed shell 22 of the correcting jacking pipe 3 are used as the outer template of the jacking pipe structure to allow the receiving well on the front side of the excavation direction of the first mechanical jacking pipe 1 to penetrate.

[0066] Based on the above method description, the deviation correction method for mechanical pipe jacking equipment according to the embodiment of the present invention has the following beneficial effects:

[0067] The correction method of the mechanical pipe jacking equipment provided by the embodiment of the present invention, after determining the position and posture of the machine head 11, reverse excavation is carried out through the correction pipe 3 to reach the machine head 11, and the traction mechanism reaches the machine head through the correction pipe 3. When the machine head 11 is corrected, the machine head 11 does not need to adjust its angle by itself, thereby avoiding further sinking of the machine head 11 or causing greater pressure on the surrounding soil layer; the mechanical pipe jacking equipment can simultaneously inject slurry into the correction pipe 3 and the second conveying pipeline 31 to support the correction pipe 3 and the second conveying pipeline 31, further improve stability, and prevent the correction pipe 3 from sinking and deviating when the machine head 11 is towed. The correction pipe 3 of the present invention is formed by modifying the mechanical pipe jacking 2, and does not require special equipment. After the position of the machine head 11 is corrected, the movable shell 21 and the fixed shell 22 of the correction pipe 3 will serve as the outer template of the pipe jacking structure to realize the penetration of the receiving well pipeline, thereby preventing the waste of equipment and materials, reducing construction costs, and improving construction safety.

[0068] The above are merely embodiments of the present invention. Those skilled in the art may make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

Claims

1. A method for correcting deviation of a mechanical pipe jacking device, wherein the mechanical pipe jacking device comprises a first mechanical pipe jacking device and a second mechanical pipe jacking device for excavation, wherein the first mechanical pipe jacking device comprises a machine head and a first conveying pipeline, wherein the first conveying pipeline is connected to the rear side of the machine head; The second mechanical jacking pipe includes: a movable shell, a fixed shell, an angle adjustment mechanism, a cutting disc, a power mechanism, and an excavation transmission mechanism, wherein the movable shell is movably arranged on the fixed shell through the angle adjustment mechanism, and the cutting disc, the power mechanism, and the excavation transmission mechanism are all arranged in the movable shell; The method comprises: determining the position and attitude of the nose; Transforming the second mechanical jacking pipe into a deviation-correcting jacking pipe comprises the following steps: removing the cutting disc, the power mechanism, and the excavation transmission mechanism from the movable housing, retaining the movable housing, the fixed housing, and the angle adjustment mechanism to form the deviation-correcting jacking pipe, wherein the inner diameter of the movable housing and the inner diameter of the fixed housing are both larger than the outer diameter of the machine head; Excavating the deviation-correcting jacking pipe and the second conveying pipeline connected to the deviation-correcting jacking pipe in the reverse direction of the excavation direction of the first mechanical jacking pipe to the machine head; The traction mechanism reaches the machine head through the deviation-correcting jacking pipe; The position and posture of the first mechanical jacking pipe are corrected by the traction mechanism.

2. The method for correcting the deviation of a mechanical pipe jacking device according to claim 1, characterized in that: Determining the position and attitude of the nose comprises the following steps: The three-dimensional coordinates of the machine head relative to the excavation reference point are obtained by a position sensor provided on the machine head; The attitude inclination angle of the aircraft head relative to the horizontal plane is obtained through an attitude sensor arranged on the aircraft head.

3. The method for correcting the deviation of a mechanical pipe jacking device according to claim 2, wherein: Excavating the deviation-correcting jacking pipe in the reverse direction of the excavation direction of the first mechanical jacking pipe to the machine head includes the following steps: Determining the buried position of the deviation-correcting jacking pipe in the front receiving well in the excavation direction of the first mechanical jacking pipe; The deviation-correcting jacking pipe is manually excavated in reverse from the receiving well toward the position of the machine head; The movable shell and the fixed shell together form a shell, and the deviation-correcting jacking pipe is excavated to the shell and is sleeved on the outside of the machine head and the first conveying pipeline.

4. The method for correcting the deviation of a mechanical pipe jacking device according to claim 3, characterized in that: After the deviation-correcting jacking pipe is excavated until the housing is sleeved on the outside of the machine head and the first conveying pipeline, the following steps are also included: The angle between the movable shell and the fixed shell is adjusted by the angle adjustment mechanism to prevent the movable shell from touching the machine head and the first conveying pipeline.

5. The deviation correction method of the mechanical pipe jacking equipment according to claim 3, characterized in that: The mechanical pipe jacking equipment includes a grouting pipeline, which passes through the second conveying pipeline and is laid along the second conveying pipeline.

6. The deviation correction method of the mechanical pipe jacking equipment according to claim 5, characterized in that: Correcting the position and posture of the first mechanical pipe jacking by the traction mechanism includes the following steps: The stabilizing slurry is injected into the second conveying pipeline and the outer wall of the deviation-correcting jacking pipe and the stratum soil by pressure grouting through the grouting pipeline. The stabilizing slurry can solidify to support the second conveying pipeline.

7. The deviation correction method of the mechanical pipe jacking equipment according to claim 3, characterized in that: The traction mechanism includes a winch, and a pulling rope of the winch passes through the deviation-correcting jacking pipe and is connected to the machine head.

8. The deviation correction method of the mechanical pipe jacking equipment according to claim 7, characterized in that: Correcting the position and posture of the first mechanical pipe jacking by the traction mechanism includes the following steps: The handpiece is pulled by the pulling rope until the handpiece returns to a predetermined position and posture.

9. The deviation correction method of the mechanical pipe jacking equipment according to claim 3, characterized in that: The method further comprises: The angle adjustment mechanism is disassembled from the deflection-correcting jacking pipe, and the movable shell and the fixed shell of the deflection-correcting jacking pipe serve as outer templates of the jacking pipe structure to allow the receiving well on the front side of the excavation direction of the first mechanical jacking pipe to penetrate.

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