CN110939448B - Reaction frame for shield initiation and method for using deviation rectifying negative ring of reaction frame - Google Patents
Reaction frame for shield initiation and method for using deviation rectifying negative ring of reaction frame Download PDFInfo
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- CN110939448B CN110939448B CN201911287349.7A CN201911287349A CN110939448B CN 110939448 B CN110939448 B CN 110939448B CN 201911287349 A CN201911287349 A CN 201911287349A CN 110939448 B CN110939448 B CN 110939448B
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- frame
- negative ring
- reaction frame
- shield
- fastening
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
Abstract
The invention relates to a reaction frame for shield starting and a method for using a deviation-rectifying negative ring of the reaction frame, which comprises a transverse frame, a vertical frame and a negative ring, wherein the reaction frame comprises a fastening part, the transverse frame and the vertical frame are combined to form a frame-shaped reaction frame, the reaction frame is used for providing propulsion reaction force for a shield machine, the negative ring is assembled along the shield tunneling direction, the annular surface of the negative ring is contacted with the reaction frame, the fastening part is arranged on the reaction frame, and the fastening part is used for fixing the negative ring; by the technical scheme, the technical defect that the assembled negative ring pipe piece which is in contact with the reaction frame cannot be effectively fixed in the starting process of the existing shield is overcome; meanwhile, the line shape of the tunnel formed by the negative ring is adjusted through the independent operation of each fastening part, so that the technical problem that the line shape is corrected by adjusting the tunneling parameters after the shield machine completely enters the tunnel is solved.
Description
Technical Field
The invention relates to the technical field of shield construction, in particular to the technical field of providing a propelling counterforce for a shield machine in a shield starting process, and specifically relates to a counterforce frame for shield starting and a method for using a deviation rectifying negative ring of the counterforce frame.
Background
With the rapid development of tunnel technology, tunnel construction by using a shield method technology becomes a main technical means for building urban tunnels, the main method for tunneling tunnels by using the shield method is to tunnel tunnels by using a shield machine according to a design scheme of tunnels, and the main technical process for tunneling tunnels by using the shield method comprises the steps of firstly tunneling tunnels by using the shield machine, further splicing prefabricated segments into rings, and further grouting and reinforcing between the outer wall of the segment ring and a geological layer. In the shield tunneling process, a step of particularly important process is shield initiation, in the shield initiation process, assembling of negative ring duct pieces is an extremely important process, and in the negative ring duct piece assembling process, how to ensure the position of the first negative ring duct piece and the linear accuracy of a tunnel formed by the whole negative ring duct piece are important points to be solved urgently in the shield initiation technology.
The reaction frame is used as an important tool for shield launching, and has the following main functions:
1. providing a supporting point for a propulsion oil cylinder of the shield tunneling machine, and enabling the shield tunneling machine to obtain forward propulsion counterforce through the backward extension of the oil cylinder;
2. assembling the negative ring pipe piece to enable the negative ring pipe piece to be abutted against the reaction frame.
In the prior art, a plurality of groups of brackets are welded at the contact position of the outer side wall of the negative ring pipe piece and the reaction frame for fixing the first negative ring pipe piece in contact with the reaction frame, so that the bracket supports the pipe piece, and the tunnel deformation caused by the sliding of the negative ring pipe piece on the reaction frame is prevented.
The above technique has the following technical problems:
1) welding the bracket is welded after assembling with the negative ring pipe piece that reaction frame contact is accomplished, though played the effect of fixed negative ring, because welding tech can lead to welding quality to obtain not guaranteed, and then technical defect such as the bracket drops produces.
2) The welding bracket belongs to passive fixation, in the shield tunneling process, the control of shield machine operators on shield posture and other technologies can cause the linear change of a negative ring, if the linear change of the negative ring is large, the problem that the linear shape of a shield after entering a tunnel deviates from the design axis of the tunnel can be directly influenced, the problem that the linear shape of the shield deviates from the design axis is solved by adjusting shield tunneling parameters and then slowly correcting the deviated tunnel linear shape in the prior art, and the method not only influences the overall linear shape of the tunnel, but also reduces the working efficiency.
Disclosure of Invention
The invention aims to: the utility model provides a shield constructs and begins to use reaction frame and uses its method of negative ring of rectifying for solving current shield and originating the technical defect that can't effectively fix the negative ring section of jurisdiction that has assembled and contacted with reaction frame in-process. The reaction frame for shield initiation realizes the technology of fixing the assembled negative ring duct piece which is in contact with the reaction frame in the shield initiation process by arranging structures such as fastening parts, and simultaneously provides a technical scheme for adjusting the tunnel line shape formed by the negative ring duct piece. By adopting the invention, the technical defects that the assembled negative ring duct piece contacted with the reaction frame cannot be effectively fixed in the shield launching process and the technical problem that the line shape of the negative ring tunnel cannot be adjusted can be effectively solved.
In order to realize the technical scheme, the invention is realized by the following technical scheme:
a reaction frame for shield starting comprises a rectangular reaction frame consisting of two transverse frames and two vertical frames, and a fastening part; the fastening part is connected with the rectangular reaction frame in a sliding manner and is used for fixing the negative ring; the fastening part comprises a first fastening mechanism and a second fastening mechanism, and the first fastening mechanism is fixedly connected with the vertical frame; the first fastening mechanism comprises a first joint, a power mechanism, a telescopic mechanism and a clamping hand; one end of the power mechanism is fixedly connected with the first joint, the other end of the power mechanism is connected with the telescopic mechanism, and the other end of the telescopic mechanism is connected with the clamping hand; the first fastening mechanism and the second fastening mechanism have the same structure, and a power mechanism of the second fastening mechanism is fixed on the transverse frame; the clamping hands are arc-shaped clamping plates and can be attached to the outer wall of the negative ring to be fixed, and the first fastening mechanism and the second fastening mechanism clamp the negative ring from two directions.
As a further description of the above technical solution, the device further includes a vertical rod and a second joint, the second joint is used for connecting the vertical rod and the vertical frame, and the vertical rod is used for supporting the first fastening mechanism.
As a further description of the above technical solution, the power mechanism further includes a reaction seat, the reaction seat is fixed on the rectangular reaction frame, the reaction seat is fixedly connected with the tail end of the power mechanism, and the reaction seat provides a reaction force for the power mechanism.
As a further description of the above technical solution, the power mechanisms of the first fastening mechanism and the second fastening mechanism are both hydraulic pumps, the telescopic mechanism is a hydraulic rod, and the vertical rod is used for supporting the hydraulic rod of the first fastening mechanism.
As further description of the technical scheme, the transverse frames and the vertical frames are detachably connected to form a rectangular reaction frame.
The vertical frame comprises a first connecting part, a vertical column, a first inclined strut, a second connecting part and a first semi-ring; the first inclined strut is used for connecting the upright post and the first semi-ring, the first connecting positions are symmetrically arranged at two ends of the upright post, and the second connecting positions are symmetrically arranged at two ends of the first semi-ring; the crossbearer comprises a second inclined strut, a cross beam and a second half ring, the second inclined strut is used for connecting the cross beam and the second half ring, the first connecting position is used for connecting the upright post and the cross beam, and the second connecting position is used for connecting the first half ring and the second half ring.
A method for correcting the deviation of a negative ring by using a reaction frame comprises a negative ring pipe piece mounting process and a deviation correcting process; the installation process comprises the following steps: s1, lofting and positioning the reaction frame mounting point position by the measurement control system; s2, mounting a reaction frame; s3, performing a telescopic test on the fastening part; s4, judging whether the clamping requirement is met; s5, mounting a negative ring; s6, the fastening component fastens the negative ring; s7, the measuring system measures and collects the data information of the installation position of the negative ring; s8, shield tunneling;
the deviation rectifying process comprises the following steps: s1, the measuring system measures and monitors the tunnel and the tunnel axis in real time; s2, feeding back the measured data to the shield tunneling machine operating system; s3: the operating system carries out comparative analysis on the measured data; s4: finding that the negative ring deviates from the original installation position; s5: the operating system contrasts and analyzes and obtains a specific numerical value needing to be corrected; s6: beginning to rectify the deviation; s7: finishing primary deviation correction: s8: monitoring the negative ring by using a measuring system and judging whether to reset; s9: and finishing the rectification.
As a further description of the above technical solution, in the installation process, when the fastening component does not satisfy the clamping requirement, it is necessary to monitor the reason why the fastening component does not satisfy the clamping, then process the problem according to the inspection result, and continue to perform the telescopic test on the fastening component after the completion of the processing.
As a further description of the above technical solution, in the deviation rectifying process, when the negative ring is not completely reset, an external measurement system is required to monitor the axis deviation of the negative ring, then the measurement data is fed back to the shield machine operation system, and then the deviation rectifying is continued until the negative ring is reset.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1) the fastening component is arranged on the reaction frame, so that the technical defect that the assembled negative ring pipe piece contacted with the reaction frame cannot be effectively fixed in the starting process of the existing shield is overcome.
2) The invention can adjust the line shape of the tunnel formed by the negative ring through the independent operation of each fastening part, thereby solving the technical problem that the line shape is corrected by adjusting the tunneling parameters after the shield machine completely enters the tunnel.
Drawings
FIG. 1 is a schematic view of the present invention in use;
FIG. 2 is a schematic three-dimensional structure of the present invention;
FIG. 3 is a schematic three-dimensional structure of the vertical frame of the present invention;
FIG. 4 is a schematic three-dimensional structure of the cross frame of the present invention;
FIG. 5 is a schematic view of the sliding connection at the joint of the present invention;
FIG. 6 is a schematic flow chart of the installation process of the present invention;
FIG. 7 is a schematic diagram of the process of deviation correction according to the present invention.
The device comprises a vertical frame, a 2 first fastening mechanism, a 3 transverse frame, a 4 second fastening mechanism, a 5 negative ring, a 101 first connecting part, a 102 vertical column, a 103 first inclined strut, a 104 second connecting part, a 105 first counter-force seat, a 106 first half ring, a 107 sliding rail, a 201 first joint, a 202 vertical rod, a 203 power mechanism, a 204 second joint, a 205 telescopic mechanism, a 206 clamping hand, a 301 inclined strut, a 302 cross beam and a 303 second half ring.
Detailed Description
The present invention will be described in detail and with reference to preferred embodiments thereof, but the present invention is not limited thereto.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
The terms "upper", "lower", "left", "right", "inner", "outer", and the like, refer to orientations or positional relationships based on orientations or positional relationships illustrated in the drawings or orientations and positional relationships that are conventionally used in the practice of the products of the present invention, and are used for convenience in describing and simplifying the invention, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the invention.
Furthermore, the terms "vertical" and the like do not require absolute perpendicularity between the components, but may be slightly inclined. Such as "vertical" merely means that the direction is relatively more vertical and does not mean that the structure must be perfectly vertical, but may be slightly inclined.
In the description of the present invention, it is also to be noted that the terms "disposed," "mounted," "connected," and the like are to be construed broadly unless otherwise specifically stated or limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
as shown in the figures 1 to 7,
a shield constructs and starts to use the reaction frame said reaction frame is the thrust structure of the propulsion cylinder, the propulsion force that the said propulsion cylinder produces acts on the reaction frame and produces and impel the reaction, splice the minus loop 5 in the cylinder stroke area of the said propulsion cylinder, the toroidal surface of the said minus loop 5 is supported and connected on the reaction frame, the said reaction frame includes the rectangular reaction frame formed by two more horizontal frames 3 and two vertical frames 1, the fastening element; the fastening part is connected with the rectangular reaction frame in a sliding way and is used for fixing the negative ring 5; the fastening part comprises a first fastening mechanism 2 and a second fastening mechanism 4, and the first fastening mechanism 2 is fixedly connected with the vertical frame 1; the first fastening mechanism 2 comprises a first joint 201, a power mechanism 203, a telescopic mechanism 205 and a clamping hand 206; one end of the power mechanism 203 is fixedly connected with the first joint 201, the other end of the power mechanism is connected with the telescopic mechanism 205, and the other end of the telescopic mechanism 205 is connected with the clamping hand 206; the first fastening mechanism 2 and the second fastening mechanism 4 have the same structure, and the power mechanism 203 of the second fastening mechanism 4 is fixed on the cross frame 3.
To better implement the present invention, as a further description of the above technical solution, the clamping hand 206 is an arc-shaped clamping plate, and can be attached to the outer wall of the negative ring 5 to be fixed, and the clamping hands 206 of the first fastening mechanism 2 and the second fastening mechanism 4 clamp the negative ring 5 from two directions.
As a further description of the above technical solution, the device further comprises an upright 202 and a second joint 204, the second joint 204 is used for connecting the upright 202 and the upright 1, and the upright 202 is used for supporting the first fastening mechanism 2.
As a further description of the above technical solution, the device further includes a reaction force seat, the reaction force seat is fixed on the rectangular reaction frame, the reaction force seat is fixedly connected with the tail end of the power mechanism 203, and the reaction force seat provides a reaction force for the power mechanism 203.
As a further description of the above technical solution, the power mechanisms 203 of the first fastening mechanism 2 and the second fastening mechanism 4 are hydraulic pumps, the telescopic mechanism 205 is a hydraulic rod, and the upright rod 202 is used for supporting the hydraulic rod of the first fastening mechanism 2; the power mechanisms 203 of the first fastening mechanism 2 and the second fastening mechanism 4 are both servo motors, the telescopic mechanism 205 is an electric pushing cylinder, and the upright rod 202 is used for supporting the servo motor of the first fastening mechanism 2; the power mechanisms 203 of the first fastening mechanism 2 and the second fastening mechanism 4 are air compressors, the telescopic mechanism 205 is an air cylinder, and the upright rod 202 is used for supporting the air compressor of the first fastening mechanism 2.
As further description of the technical scheme, the transverse frame 3 and the vertical frame 1 are detachably connected to form a rectangular reaction frame, wherein the transverse frame 3 and the vertical frame 1 are detachably connected.
The vertical frame 1 comprises a first connecting part 101, a vertical column 102, a first inclined strut 103, a second connecting part 104 and a first semi-ring 106; the first inclined strut 103 is used for connecting the upright column 102 and the first half ring 106, the first connecting part 101 is symmetrically arranged at two ends of the upright column 102, and the second connecting part 104 is symmetrically arranged at two ends of the first half ring 106; the cross frame 3 comprises a second inclined strut 301, a cross beam 302 and a second half ring 303, the second inclined strut 301 is used for connecting the cross beam 302 and the second half ring 303, the first connecting part 101 is used for connecting the upright column 102 and the cross beam 302, and the second connecting part 104 is used for connecting the first half ring 106 and the second half ring 303.
Through the technical scheme, the technical defect that the assembled negative ring 5 duct pieces which are contacted with the reaction frame cannot be effectively fixed in the starting process of the existing shield is overcome. The following is a further accurate and clear explanation of the solution of the invention:
the tunnel linear shape refers to the geometric shape and the line trend of a tunnel, the tunnel axis and the tunnel red line are designed when the tunnel is designed, the axis controls the tunnel trend, the red line controls the geometric shape of the tunnel, and in the tunnel constructed by adopting the shield method, the control method for tunneling along the tunnel axis and the red line mostly adopts the control of tunneling parameters, shield postures and the like. As is known well, when a shield is just started, the shield machine advances to drive through a propulsion counter force generated by a propulsion oil cylinder and a counter force frame, tunnel extension is carried out by adopting a method for assembling negative rings 5 in a space before the counter force frame and a shield tail completely enter a tunnel, when the first negative ring 5 is assembled, the assembling accuracy of the first negative ring 5 directly influences the assembling quality of the subsequent negative ring 5, the assembling quality of the negative ring 5 mainly reflects whether a wrong station exists or not, and the wrong station directly influences the line shape of the tunnel.
At present, the method for solving the problem of linear deviation of the tunnel from the designed axis is to wait for the shield machine to completely enter the tunnel, and then slowly correct the deviation by controlling the tunneling parameters, adjusting the shield posture and the like. That is, the tunnel is still off the design axis for the deviated segment before the deviation correction is completed.
In order to solve the problem, the invention provides a scheme for adjusting the position of the first negative ring 5, and the specific process is as follows:
according to fig. 1 to 5, two sets of first fastening mechanisms 2 and second fastening mechanisms 4 are symmetrically arranged on the side surface of the reaction frame contacting with the negative ring 5, and each fastening mechanism is composed of an independent power mechanism 203 and an independent telescopic mechanism 205. It is assumed that the first negative loop 5 is deviated to the lower left at this time.
Firstly, a tunnel axis is retested by using a measuring system of the shield tunneling machine, a specific deviation correction amount of the negative ring 5 is calculated, further, the left first power mechanism 203 is started, the left first power mechanism 203 pushes the left first telescopic mechanism 205 to move rightwards, the right first power mechanism 203 is started simultaneously, the right first telescopic mechanism 205 is retracted, meanwhile, the first power mechanism 203 slides on the slide rail 107, and then left-right deviation correction is completed, further, the lower second power mechanism 203 is started, the lower second power mechanism 203 pushes the lower second telescopic mechanism 205 to move upwards, the upper second power mechanism 203 is started simultaneously, the upper second telescopic mechanism 205 is retracted, meanwhile, the second power mechanism 203 slides on the slide rail 107, and finally, up-down deviation correction is completed. Through the independent operation of the fastening parts, the line shape of the tunnel formed by the negative ring 5 can be adjusted, and the technical problem that the line shape is corrected by adjusting the tunneling parameters after the shield machine completely enters the tunnel is solved.
A method for correcting the position of a negative ring 5 by using a reaction frame for shield initiation comprises a negative ring 5 installation process and a negative ring 5 correction process; the method comprises the following specific operation flows:
the installation process is realized by the following processes:
s1, lofting and positioning the reaction frame mounting point position by the measurement control system;
firstly, determining the installation position of a reaction frame in an initial well according to a construction drawing, then lofting the installation position of the reaction frame by adopting a Leica total station, lofting the specific positions of the lower planes of two vertical frames 1 of the reaction frame, lofting a total of eight edge points of the two reaction frames, and then positioning the released edge points by adopting iron nails.
S2, mounting a reaction frame;
next, hoisting a reaction frame cross frame 3 into the well by using hoisting equipment (such as a crawler crane, a truck crane, a gantry crane, a tower crane and the like), hoisting a reaction frame vertical frame 1 into the well, after the vertical frame 1 goes into the well, positioning the reaction frame vertical frame 1 by a technician according to a lofting point position, simultaneously carrying out repeated measurement on the vertical frame 1 just going into the well by using a leica total station, and fixing the cross frame 3 which has gone into the well and the vertical frame 1 together by using bolts after determining an accurate position; next, hoisting the other vertical frame 1 into the well by using hoisting equipment, after the vertical frame 1 is placed into the well, positioning the reaction frame vertical frame 1 by a technician according to the lofting point position, simultaneously performing retesting on the vertical frame 1 just placed into the well by using a Leica total station, after determining the accurate position, fixing the horizontal frame 3 and the vertical frame 1 which are already placed into the well together by using bolts to form a concave structure, then hoisting the reaction frame support system into the well and connecting the support system and the vertical frame 1; after the support system is installed, another cross frame 3 is hoisted and lowered into the well by using the hoisting system, and the cross frame 3 is connected with the two vertical frames 1 by using bolts; after connection is completed, a total station is used for lofting the installation position of the negative ring 5 on the annular surface of the reaction frame, four point positions including an upper point, a lower point, a left point, a right point and a left point are mainly released, and meanwhile, the center line of the reaction frame is ensured to coincide with the axis of the tunnel.
S3, performing a telescopic test on the fastening part;
assuming that the power mechanisms 203 of the first fastening mechanism 2 and the second fastening mechanism 4 are hydraulic pumps, the telescopic mechanism 205 is a hydraulic rod, and the vertical rod 202 is used for supporting the hydraulic rod of the first fastening mechanism 2; then the hydraulic pump is started to observe whether the hydraulic pump can drive the hydraulic rod to guide the clamping hand 206 to move, and clamping is completed.
Assuming that the power mechanisms 203 of the first fastening mechanism 2 and the second fastening mechanism 4 are both servo motors, the telescopic mechanism 205 is an electric pushing cylinder, and the upright rod 202 is used for supporting the servo motor of the first fastening mechanism 2; then the servo motor is started to observe whether the servo motor can drive the electric pushing cylinder to guide the clamping hand 206 to move, and the clamping is completed.
If the power mechanisms 203 of the first fastening mechanism 2 and the second fastening mechanism 4 are both air compressors, the telescopic mechanism 205 is an air cylinder, and the upright 202 is used for supporting the air compressor of the first fastening mechanism 2; then the air compressor is started to observe whether the air compressor can drive the air cylinder to guide the clamping hand 206 to move, and clamping is completed.
S4, judging whether the clamping requirement is met;
whether the fastening part can meet the clamping requirement is judged mainly by observing that the driving mechanism can work normally, so long as the driving mechanism can work normally, the clamping requirement can be met, and otherwise, the clamping requirement cannot be met.
S5, mounting the negative ring 5;
firstly, hoisting a first standard block to a mounting position, superposing a cambered surface formed by combining the standard block and a reaction frame with a lofted point position on the reaction frame, further mounting an adjacent block, and finally mounting a capping block.
S6, the fastening component fastens the negative ring 5;
and (3) opening the power mechanism 203 of the fastening part, driving the telescopic mechanism 205 to move by the power mechanism 203, driving the clamping hands 206 to move by the telescopic mechanism 205, ensuring that each clamping hand 206 is attached to the outer ring surface of the negative ring 5, further measuring the negative ring 5 by using a Leica total station, mainly measuring whether the central line of the negative ring 5 is overlapped with the axis of the tunnel, and finishing the fastening step of the negative ring 5 when the central line of the negative ring 5 is overlapped with the axis of the tunnel.
S7, the measuring system measures and collects the data information of the installation position of the negative ring 5;
and measuring and collecting information such as longitude and latitude elevations of the contact surface of the clamping hand 206 and the negative ring 5 by using a Leica total station.
S8, shield tunneling;
the deviation rectifying process is realized by the following procedures:
s1, the measuring system measures and monitors the tunnel and the tunnel axis in real time;
the tunnel being formed and the tunnel axis are measured and monitored by a total station measuring system installed on the shield tunneling machine and a prism installed in the tunnel formed at the rear.
S2, feeding back the measured data to the shield tunneling machine operating system;
the external measuring system mainly uses a Leica total station to measure and collect longitude and latitude elevation and other information of the contact surface of the clamping hand 206 and the negative ring 5, and simultaneously transmits the measured data to the shield machine operating system, and simultaneously transmits the data measured by the total station measuring system on the shield machine to the shield machine operating system.
The external measurement system can also select a level gauge to measure, mainly measure the height difference between the original installation position of the negative ring 5 and the transformed height difference, and obtain the value to be adjusted according to the height difference.
S3: the operating system carries out comparative analysis on the measured data;
the data comparison mainly comprises the step of comparing data obtained by measurement of a shield machine measurement system and an external measurement system for data comparison and analysis.
S4: the negative ring 5 is found to be offset from the original mounting position;
s5: the operating system contrasts and analyzes and obtains a specific numerical value needing to be corrected;
s6: beginning to rectify the deviation;
the concrete process of rectifying is:
taking the negative ring 5 offset to the lower left as an example: firstly, the left first power mechanism 203 is turned on, the left first power mechanism 203 pushes the left first telescoping mechanism 205 to move rightwards, the right first power mechanism 203 is turned on simultaneously to enable the right first telescoping mechanism 205 to retract, meanwhile, the first power mechanism 203 slides on the slide rail 107 to finish left-right deviation correction, furthermore, the lower second power mechanism 203 is turned on, the lower second power mechanism 203 pushes the lower second telescoping mechanism 205 to move upwards, the upper second power mechanism 203 is turned on simultaneously to enable the upper second telescoping mechanism 205 to retract, meanwhile, the second power mechanism 203 slides on the slide rail 107, and finally, up-down deviation correction is finished. Through the independent operation of the fastening parts, the line shape of the tunnel formed by the negative ring 5 can be adjusted, and the technical problem that the line shape is corrected by adjusting the tunneling parameters after the shield machine completely enters the tunnel is solved.
S7: finishing primary deviation correction:
s8: monitoring the negative ring 5 by using a measuring system and judging whether to reset;
the measuring system mainly uses a Leica total station to measure and collect longitude and latitude elevation and other information of the contact surface of the clamping hand 206 and the negative ring 5, and simultaneously transmits the measured data to the shield tunneling machine operating system, and simultaneously transmits the data measured by the total station measuring system on the shield tunneling machine to the shield tunneling machine operating system.
The measuring system can also select a level gauge to measure, mainly measure the height difference between the original installation position of the negative ring 5 and the transformed height difference, and obtain the value to be adjusted according to the height difference.
S9: and finishing the rectification.
When the fastening part does not meet the clamping requirement, the reason why the fastening part does not meet the clamping requirement needs to be monitored, then the problem is processed according to the inspection result, and the fastening part continues to be subjected to the telescopic test after the processing is finished.
When the negative ring 5 is not completely reset, an external measuring system is needed to monitor the axial deviation condition of the negative ring 5, then the measured data is fed back to the shield tunneling machine operation system, and then the deviation correction is continued until the negative ring 5 is reset.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a shield constructs initial reaction frame of using which characterized in that: the reaction frame comprises a rectangular reaction frame consisting of two transverse frames (3) and two vertical frames (1) and a fastening part; the fastening component is connected with the rectangular reaction frame in a sliding mode and used for fixing the negative ring (5);
the fastening component comprises a first fastening mechanism (2) and a second fastening mechanism (4), and the first fastening mechanism (2) is fixedly connected with the vertical frame (1);
the first fastening mechanism (2) comprises a first joint (201), a power mechanism (203), a telescopic mechanism (205) and a clamping hand (206); one end of the power mechanism (203) is fixedly connected with the first joint (201), the other end of the power mechanism is connected with the telescopic mechanism (205), and the other end of the telescopic mechanism (205) is connected with the clamping hand (206);
the first fastening mechanism (2) and the second fastening mechanism (4) are identical in structure, and a power mechanism (203) of the second fastening mechanism (4) is fixed on the cross frame (3);
the clamping hand (206) is an arc-shaped clamping plate and can be attached to the outer wall of the negative ring (5) to be fixed, and the first fastening mechanism (2) and the clamping hand (206) of the second fastening mechanism (4) clamp the negative ring (5) from two directions.
2. The reaction frame for shield initiation according to claim 1, wherein: the connecting device further comprises a vertical rod (202) and a second joint (204), wherein the second joint (204) is used for connecting the vertical rod (202) and the vertical frame (1), and the vertical rod (202) is used for supporting the first fastening mechanism (2).
3. The reaction frame for shield initiation according to claim 1, wherein: the reaction force frame is characterized by further comprising a reaction force seat, the reaction force seat is fixed on the rectangular reaction force frame, the reaction force seat is fixedly connected with the tail end of the power mechanism (203), and the reaction force seat provides reaction force for the power mechanism (203).
4. The reaction frame for shield initiation according to claim 2, wherein: the power mechanisms (203) of the first fastening mechanism (2) and the second fastening mechanism (4) are hydraulic pumps, the telescopic mechanism (205) is a hydraulic rod, and the vertical rod (202) is used for supporting the hydraulic rod of the first fastening mechanism (2).
5. The reaction frame for shield initiation according to claim 1, wherein: the transverse frame (3) and the vertical frame (1) are detachably connected to form a rectangular reaction frame;
the vertical frame (1) comprises a first connecting part (101), a vertical column (102), a first inclined strut (103), a second connecting part (104) and a first half ring (106); the first inclined strut (103) is used for connecting the upright column (102) and the first half ring (106), the first connecting part (101) is symmetrically arranged at two ends of the upright column (102), and the second connecting part (104) is symmetrically arranged at two ends of the first half ring (106);
the transverse frame (3) comprises a second inclined strut (301), a transverse beam (302) and a second half ring (303), the second inclined strut (301) is used for connecting the transverse beam (302) and the second half ring (303), the first connecting part (101) is used for connecting the upright column (102) and the transverse beam (302), and the second connecting part (104) is used for connecting the first half ring (106) and the second half ring (303).
6. The method for correcting the deviation of the negative ring by using the reaction frame for shield initiation according to any one of claims 1 to 5, is characterized in that: the method comprises the following steps:
s1, mounting a negative ring pipe sheet;
the installation of the negative ring pipe piece comprises the following steps:
s11, lofting and positioning the reaction frame mounting point position by the measurement control system;
s12, mounting a reaction frame;
s13, performing a telescopic test on the fastening part;
s14, judging whether the clamping requirement is met;
s15, mounting a negative ring (5);
s16, the fastening component fastens the negative ring (5);
s17, the measuring system measures and collects the data information of the installation position of the negative ring (5);
s18, shield tunneling;
s2, correcting the negative ring;
the deviation rectifying process comprises the following steps:
s21, the measuring system measures and monitors the tunnel and the tunnel axis in real time;
s22, feeding back the measured data to the shield tunneling machine operating system;
s23: the operating system carries out comparative analysis on the measured data;
s24: finding the negative ring (5) to deviate from the original installation position;
s25: the operating system contrasts and analyzes and obtains a specific numerical value needing to be corrected;
s26: beginning to rectify the deviation;
s27: finishing primary deviation correction:
s28: monitoring the negative ring (5) by using a measuring system and judging whether to reset;
s29: and finishing the rectification.
7. The method for correcting the negative ring by using the reaction frame for shield initiation as claimed in claim 6, wherein the method comprises the following steps: in step S14, when the fastening member does not satisfy the clamping requirement, the reason why the fastening member does not satisfy the clamping needs to be monitored, then the problem is processed according to the inspection result, and the expansion test is continued to be performed on the fastening member after the processing is completed.
8. The method for correcting the negative ring by using the reaction frame for shield initiation as claimed in claim 6, wherein the method comprises the following steps: in step S28, when the negative ring (5) is not completely reset, an external measurement system is used to monitor the axis deviation of the negative ring (5), and then the measurement data is fed back to the shield machine operation system, and then the deviation correction is continued until the negative ring (5) is reset.
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