CN215810790U - Automatic monitoring system for absolute deformation of tunnel section - Google Patents
Automatic monitoring system for absolute deformation of tunnel section Download PDFInfo
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- CN215810790U CN215810790U CN202121717649.7U CN202121717649U CN215810790U CN 215810790 U CN215810790 U CN 215810790U CN 202121717649 U CN202121717649 U CN 202121717649U CN 215810790 U CN215810790 U CN 215810790U
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Abstract
The utility model discloses an automatic monitoring system for absolute deformation of a tunnel section. The device comprises an array displacement meter for monitoring the relative deformation of the section of the tunnel in real time, wherein a multipoint displacement meter is arranged at one end of the array displacement meter, is buried in a drill hole from the tunnel wall to the deep part of the surrounding rock and is used for monitoring the absolute displacement of a hole opening of the drill hole relative to the immobile point of the deep part of the surrounding rock in real time; the system also comprises data acquisition equipment and terminal equipment, wherein the data acquisition equipment is respectively connected with the array displacement meter and the multipoint displacement meter and is used for acquiring and storing monitoring data in real time; and the terminal equipment is connected with the data acquisition equipment and is used for carrying out related data analysis on the monitoring data. The system realizes real-time automatic monitoring of the absolute deformation of the section of the tunnel by establishing a space physical connection relation between the array displacement meter and the multipoint displacement meter and combining a data acquisition function of data acquisition equipment and an analysis function of a computer and software.
Description
Technical Field
The utility model relates to the technical field of tunnel deformation monitoring, in particular to an automatic monitoring system for absolute deformation of a tunnel section.
Background
The water delivery engineering is an effective way for solving the problem of uneven space-time distribution of water resources in China, and a Tunnel Boring Machine (TBM), a shield Tunnel, a drilling and blasting Tunnel and the like are main forms of the water delivery engineering. The tunnels usually pass through urban underground, mountains, rivers and the like, but TBM or shield machine construction and drilling, blasting, excavating and blasting can affect adjacent rock-soil body strata or ground buildings, and problems of overlarge ground settlement, uneven ground settlement and the like can be caused. The full-section deformation of the inner wall of the tunnel surrounding rock is an index for visually evaluating the influence degree and is an important basis for judging the safety of the tunnel in the construction process, so that the method has important significance for timely and continuously acquiring the full-section deformation form of the inner wall of the tunnel surrounding rock.
At present, in the actual tunnel engineering, the conventional monitoring method for the deformation of the inner wall of the surrounding rock of the tunnel comprises the following steps: convergence measurement, basett method, total station method, etc. The convergence meter method is characterized in that hooks are arranged on the ring direction of the section of the tunnel manually, and the distance between the two hooks is measured by a steel ruler convergence meter. The Basette method is to measure the convergence deformation of the tunnel by using a triangular structure consisting of a long arm and a short arm and an inclination sensor on the arm, wherein the triangular structure influences the passing area of the tunnel. The total station method adopts a manual station to perform optical observation on different measuring points on a section at a fixed point outside the section, and calculates vault settlement or horizontal convergence deformation data through conversion.
When deformation observation is carried out on the inner walls of surrounding rocks of a TBM tunnel, a shield tunnel and a tunnel by a drilling and blasting method, the observed space is narrow, the observation time is very limited, and the conventional monitoring method generally has the problems of low automation degree, high observation cost, influence on main body construction, section passing and the like. Although the patent "an automatic monitoring system for convergence deformation of tunnel cross section" (publication number: CN 110186420 a) can realize automatic monitoring of convergence deformation of tunnel cross section, its measurement result is relative deformation of tunnel cross section relative to the head or tail end of the monitoring device, and the connection between deformation data and external immobile point cannot be established, i.e. absolute deformation data of tunnel cross section cannot be obtained. The method can only obtain the local relative deformation condition of the tunnel section, cannot obtain the whole absolute deformation, and is difficult to accurately and comprehensively judge the absolute deformation rule of the tunnel full section.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an automatic monitoring system for absolute deformation of a tunnel section, which realizes automatic monitoring of the absolute deformation of the full section of the inner wall of surrounding rock of the tunnel and avoids the defect that the absolute deformation rule of the tunnel section is not clear due to the fact that only the relative deformation of the tunnel section is monitored.
In order to achieve the above object, the present invention provides an automatic monitoring system for absolute deformation of a tunnel cross section, comprising an array displacement meter for monitoring the relative deformation of the tunnel cross section in real time, wherein the array displacement meter is arranged on the inner wall or inside of a lining structure of the tunnel, and is characterized in that: the array displacement meter is characterized in that a multipoint displacement meter is arranged at one end of the array displacement meter, is embedded in a drill hole from the tunnel wall to the deep part of the surrounding rock and is used for monitoring the absolute displacement of the drill hole relative to the immobile point of the deep part of the surrounding rock in real time; the system also comprises data acquisition equipment and terminal equipment, wherein the data acquisition equipment is respectively connected with the array displacement meter and the multipoint displacement meter and is used for acquiring and storing monitoring data of the array displacement meter and the multipoint displacement meter in real time; the terminal equipment is connected with the data acquisition equipment and used for sending an automatic remote measuring instruction to the data acquisition equipment, receiving monitoring data uploaded by the data acquisition equipment and analyzing related data to obtain absolute deformation data of the inner wall of the section of the tunnel relative to the stationary point of the deep part of the surrounding rock.
Furthermore, the multipoint displacement meter is embedded in a drill hole from the tunnel wall to the deep part of the surrounding rock along the horizontal direction, the multipoint displacement meter comprises an installation base positioned at the hole of the drill hole, and the installation base is firmly connected with one end head of the array displacement meter; n measuring rods which are different in length and are horizontally arranged penetrate through the mounting base; a displacement sensor is arranged at one end of each measuring rod corresponding to the drill hole, an anchor head anchored at the deep part of the surrounding rock is arranged at the other end of each measuring rod, and the anchor head at the deepest position is regarded as a fixed point of the deep part of the surrounding rock; the displacement sensor is used for monitoring absolute displacement data of a drilling hole orifice relative to a surrounding rock deep stationary point in real time.
Further, the depth of the drilled hole is larger than two tunnel diameters.
Further, N is 6 or less.
Furthermore, each measuring rod is provided with a support ring at intervals along the length direction for preventing the measuring rod from knotting or twisting.
Further, the displacement sensor is fixed on the mounting base through a mounting plate.
Furthermore, the array displacement meter comprises a plurality of sections of hard tubes and hoses which are alternately connected, acceleration sensors are arranged in each section of hard tube, each acceleration sensor is used for monitoring deformation form data of the inner wall of the tunnel at the corresponding position in real time, and therefore the array displacement meter which deforms in cooperation with the tunnel section can determine the relative deformation form data of the tunnel section relative to one end of the array displacement meter.
Furthermore, the length and the number of the single hard pipe are determined according to the section size of the tunnel, and the length specification of the single hard pipe is 0.3m, 0.5m and 1.0 m.
Furthermore, the array displacement meter also comprises clamping devices which correspond to two ends of the plurality of hard tubes one to one, and the clamping devices are fixedly arranged on the inner wall of the tunnel lining structure and used for clamping and fixing the hard tubes corresponding to the clamping devices.
The utility model has the advantages that:
1. the deformation form data of the inner wall of the tunnel at the corresponding position of each acceleration sensor is monitored in real time through a plurality of sections of acceleration sensors arranged at intervals on the array displacement meter, so that the array displacement meter which deforms in cooperation with the section of the tunnel can determine the relative deformation form data of the section of the tunnel relative to one end head of the array displacement meter;
2. monitoring absolute displacement data of a drilling hole relative to a surrounding rock deep immobile point in real time through a displacement sensor arranged at the drilling hole in a multi-point displacement meter;
3. by establishing a space physical connection relation between the array displacement meter and the multipoint displacement meter, the relative deformation of the tunnel section monitored by the array displacement meter relative to one end head of the array displacement meter and the absolute displacement of the drilling hole opening monitored by the multipoint displacement meter relative to the surrounding rock deep stationary point are fully fused, and the real-time automatic monitoring of the absolute deformation of the tunnel section is realized by combining the data acquisition function of data acquisition equipment and the analysis function of a computer and software.
The automatic monitoring system for the absolute deformation of the tunnel section is simple in structure, and compared with the automatic monitoring system for the convergence deformation of the tunnel section (publication number: CN 110186420A), the automatic monitoring system for the absolute deformation of the tunnel section avoids the defect that the absolute deformation rule of the tunnel section is not clear due to the fact that only the relative deformation of the tunnel section is monitored.
Drawings
FIG. 1 is a schematic front view of an automatic monitoring system for absolute deformation of a tunnel cross section according to the present invention;
FIG. 2 is an enlarged view of a portion of the array displacement gauge of FIG. 1;
FIG. 3 is an enlarged view of a portion of the multipoint displacement gauge of FIG. 1;
in the figure: the device comprises an array displacement meter 1, a hard pipe 11, a hose 12, an acceleration sensor 13, a clamp 14, a multipoint displacement meter 2, a measuring rod 21, a first measuring rod 21-1, a second measuring rod 21-2, a third measuring rod 21-3, a displacement sensor 22, a mounting base 23, a mounting plate 24, a fixing bolt 25, an anchor head 26, a support ring 27, data acquisition equipment 3, terminal equipment 4, a lining structure 5, surrounding rocks 6 and a drill hole 7.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present 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.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The utility model discloses an automatic monitoring system for absolute deformation of a tunnel section, which comprises an array displacement meter 1, wherein the array displacement meter 1 is arranged on the inner wall or inside a tunnel lining structure 5 and is used for monitoring the relative deformation of the tunnel section relative to one end head of the array displacement meter 1 in real time. The array displacement meter 1 one end is equipped with multiple spot displacement meter 2, multiple spot displacement meter 2 buries underground in tunnel cave wall to 6 deep drilling 7 of country rock for the absolute displacement of 7 drill holes departments for 6 deep immobile spots of country rock in real time monitoring. The multipoint displacement meter 2 and the array displacement meter 1 work cooperatively to monitor the absolute deformation of the tunnel section relative to the stationary point at the deep part of the surrounding rock 6 in real time. The automatic monitoring system further comprises a data acquisition device 3 and a terminal device 4, wherein the data acquisition device 3 is respectively connected with the array displacement meter 1 and the multipoint displacement meter 2 through cables and is used for acquiring and storing monitoring data of the array displacement meter 1 and the multipoint displacement meter 2 in real time. And the terminal equipment 4 is in cable connection with the data acquisition equipment 3 and is used for sending an automatic remote measuring instruction to the data acquisition equipment 3, receiving the monitoring data uploaded by the data acquisition equipment 3 and analyzing related data to obtain absolute deformation data of the inner wall of the section of the tunnel relative to the deep immobile point of the surrounding rock 6.
According to the utility model, by establishing a space physical connection relation between the array displacement meter 1 and the multipoint displacement meter 2, the relative deformation of the tunnel section monitored by the array displacement meter 1 relative to one end head of the array displacement meter 1 and the absolute displacement of the hole opening of the drill hole 7 monitored by the multipoint displacement meter 2 relative to the stationary point in the deep part of the surrounding rock 6 are fully fused, and the real-time automatic monitoring of the absolute deformation of the tunnel section is realized by combining the data acquisition function of the data acquisition equipment 3 and the analysis function of a computer and software.
In the technical scheme, the array displacement meter 1 is contacted and attached with the section of the tunnel to cooperatively deform, can be arranged inside the structure of the tunnel lining 5 in an embedded installation mode, and can also be arranged on the surface of the inner wall of the lining structure 5.
As shown in fig. 1 and fig. 2, in this embodiment, the array displacement meter 1 includes a plurality of hard tubes 11 and a plurality of flexible tubes 12 that are alternately connected, two ends of each flexible tube 12 are respectively connected to one hard tube 11, an acceleration sensor 13 is disposed at a middle position of each hard tube 11, and each acceleration sensor 13 is configured to monitor deformation form data of a tunnel inner wall at a corresponding position in real time, so that the array displacement meter 1 that deforms in cooperation with a tunnel cross section can determine a relative deformation vector of the tunnel cross section with respect to an end of one end of the array displacement meter 1.
The length and the number of the single hard tube 11 are determined according to the section size of the tunnel, and the length specification of the single hard tube is 0.3m, 0.5m and 1.0 m. In this embodiment, the diameter of the section of the tunnel is 4.0m, and the diameter of the single hard tube 11 is 0.5m, which is twenty one in total.
In this embodiment, the array displacement meter 1 further includes clamps 14 corresponding to two ends of the plurality of hard tubes 11, and each clamp 14 is respectively disposed at two ends of each hard tube 11. The fixture 14 is fixedly arranged on the inner wall of the tunnel lining structure 5 and used for clamping and fixing the hard pipe 11 corresponding to the fixture.
In the above technical scheme, the multipoint displacement meter 2 is buried in a drill hole 7 from the tunnel wall to the deep part of the surrounding rock 6 along the horizontal direction, the tunnel diameter is 4m, and the hole depth of the drill hole 7 is 20 m. The diameter of the drill hole 7 is 200mm (the diameter of the drill hole 7 is determined according to the size of the multipoint displacement meter 2, the diameter of the drill hole 7 is not limited by the method, and the diameter of the rest 19.5m drill hole 7 is 110mm between the distance from the tunnel wall to the deep part of the surrounding rock 6 and 0.5 m.
As shown in fig. 3, the multipoint displacement meter 2 comprises a mounting base 23 located at the orifice of the borehole 7, and the mounting base 23 is in a honeycomb briquette shape and is firmly connected with one end head of the array displacement meter 1. The mounting base 23 is internally penetrated by three measuring rods 21 which have different lengths and are horizontally arranged. Wherein the length of the first measuring rod 21-1 is 15 meters, the length of the second measuring rod 21-2 is 10 meters, and the length of the third measuring rod 21-3 is 5 meters. Each of the measuring rods 21 is preferably provided with support rings 27 at intervals along the length thereof for preventing the measuring rods 21 from being knotted or twisted.
Every measuring staff 21 one end all is equipped with displacement sensor 22 corresponding to drilling 7 hole department, and the other end all is equipped with anchor head 26 of anchoring in 6 deep of country rock, anchor head 26 distributes in drilling 7 different degree of depth departments. The displacement sensor 22 is fixed to a mounting base 23 by a mounting plate 24. The displacement sensor 22 is inserted into the mounting hole in the mounting plate 24, after reaching the connection point of the measuring rod 21, the displacement sensor 22 applies a certain pressure to the connection direction and is clockwise screwed into the connection hole at the top of the measuring rod 21, and finally the mounting plate 24 is connected and screwed with the mounting base 23 by the fixing bolt 25.
The anchor head 26 of the measuring rod 21 is anchored at the position several meters to several tens meters deep in the surrounding rock 6 of the tunnel, wherein the anchor head 26 at the other end of the first measuring rod 21-1 (i.e. the longest measuring rod) is regarded as a deep immobile point of the surrounding rock 6. And a displacement sensor 22 at one end of each measuring rod 21 is used for monitoring absolute displacement vectors of the drill hole 7 relative to different depths of the surrounding rock 6 in real time. The displacement sensor 22 at one end of the first measuring rod 21-1 (namely the longest measuring rod) is used for monitoring the absolute displacement vector of the hole opening of the borehole 7 relative to the deep immobile point of the surrounding rock 6 in real time. The absolute displacement vector measured by the displacement sensor 22 at one end of the first measuring rod 21-1 and the relative deformation vector measured by the array displacement meter 1 are superposed to obtain the absolute deformation data of the tunnel section relative to the deep immobile point of the surrounding rock 6.
The array displacement meter 1 and the multipoint displacement meter 2 are connected with the data acquisition equipment 3 through cables, and the data acquisition equipment 3 is connected with the terminal equipment 4 through cables. The terminal equipment 4 is utilized to send out an automatic remote measuring instruction to the data acquisition equipment 3 to obtain various monitoring data, and an absolute displacement vector measured by the displacement sensor 22 at the end of the first measuring rod 21-1 and a relative deformation vector measured by the array displacement meter 1 are superposed by combining the analysis and calculation functions of relevant software of the terminal equipment 4 to obtain the absolute deformation data of the inner wall of the tunnel cross section relative to the deep immobile point of the surrounding rock 6, so that the real-time automatic monitoring of the full cross section of the absolute deformation of the inner wall of the surrounding rock of the tunnel is realized.
The above description is only exemplary of the present invention and should not be taken as limiting the utility model, as any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides an automatic monitoring system of absolute deformation of tunnel section, is including array displacement meter (1) that is used for the relative deformation of real-time supervision tunnel section, array displacement meter (1) sets up at tunnel lining structure (5) inner wall or inside, its characterized in that: the array displacement meter (1) is characterized in that a multipoint displacement meter (2) is arranged at one end of the array displacement meter (1), and the multipoint displacement meter (2) is buried in a drill hole (7) from the tunnel wall to the deep part of the surrounding rock (6) and used for monitoring the absolute displacement of an orifice of the drill hole (7) relative to the stationary point at the deep part of the surrounding rock (6) in real time; the system also comprises data acquisition equipment (3) and terminal equipment (4), wherein the data acquisition equipment (3) is respectively connected with the array displacement meter (1) and the multipoint displacement meter (2) and is used for acquiring and storing monitoring data of the array displacement meter (1) and the multipoint displacement meter (2) in real time; and the terminal equipment (4) is connected with the data acquisition equipment (3) and is used for sending an automatic remote measuring instruction to the data acquisition equipment (3), receiving the monitoring data uploaded by the data acquisition equipment (3) and carrying out related data analysis to obtain absolute deformation data of the inner wall of the section of the tunnel relative to the deep immobile point of the surrounding rock (6).
2. The automatic monitoring system of the absolute deformation of the tunnel section according to claim 1, characterized in that: the multipoint displacement meter (2) is buried in a drill hole (7) from the tunnel wall to the deep part of the surrounding rock (6) along the horizontal direction, the multipoint displacement meter (2) comprises an installation base (23) positioned at the hole of the drill hole (7), and the installation base (23) is firmly connected with one end of the array displacement meter (1); n measuring rods (21) which are different in length and are horizontally arranged penetrate through the mounting base (23); a displacement sensor (22) is arranged at the position, corresponding to the hole opening of the drill hole (7), of one end of each measuring rod (21), an anchor head (26) anchored at the deep part of the surrounding rock (6) is arranged at the end of the other end of each measuring rod, and the anchor head (26) at the deepest position is regarded as a stationary point at the deep part of the surrounding rock (6); the displacement sensor (22) is used for monitoring absolute displacement data of the hole opening of the drill hole (7) relative to the stationary point of the deep part of the surrounding rock (6) in real time.
3. The automatic monitoring system of the absolute deformation of the tunnel section according to claim 2, characterized in that: the hole depth of the drilling hole (7) is larger than two times of the diameter of the tunnel.
4. The automatic monitoring system of the absolute deformation of the tunnel section according to claim 2 or 3, characterized in that: and N is less than or equal to 6.
5. The automatic monitoring system of the absolute deformation of the tunnel section according to claim 4, characterized in that: and support rings (27) for preventing the measuring rods (21) from knotting or twisting are arranged at intervals on each measuring rod (21) along the length direction.
6. The automatic monitoring system of the absolute deformation of the tunnel section according to claim 5, characterized in that: the displacement sensor (22) is fixed on the mounting base (23) through a mounting plate (24).
7. The automatic monitoring system for absolute deformation of a tunnel section according to claim 1 or 2, characterized in that: array displacement meter (1) includes hard tube (11) and hose (12) that a plurality of sections connect in turn, every section all be equipped with acceleration sensor (13) in hard tube (11), every acceleration sensor (13) are used for the deformation form data of real-time supervision corresponding position department tunnel inner wall to make array displacement meter (1) with the tunnel section deformation in coordination can confirm the relative deformation form data of tunnel section for array displacement meter (1) one end.
8. The automatic monitoring system of the absolute deformation of the tunnel section according to claim 7, characterized in that: the length and the number of the single hard pipe (11) are determined according to the section size of the tunnel, and the length specifications of the single hard pipe are 0.3m, 0.5m and 1.0 m.
9. The automatic monitoring system of the absolute deformation of the tunnel section according to claim 7, characterized in that: the array displacement meter (1) further comprises clamping devices (14) which correspond to the two ends of the plurality of hard tubes (11) one by one, wherein the clamping devices (14) are fixedly arranged on the inner wall of the tunnel lining structure (5) and used for clamping and fixing the hard tubes (11) corresponding to the clamping devices.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121717649.7U CN215810790U8 (en) | 2021-07-27 | 2021-07-27 | Automatic monitoring system for absolute deformation of tunnel section |
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| CN202121717649.7U CN215810790U8 (en) | 2021-07-27 | 2021-07-27 | Automatic monitoring system for absolute deformation of tunnel section |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115560723A (en) * | 2022-12-07 | 2023-01-03 | 中国矿业大学(北京) | Advanced measurement method for instantaneous deformation of large-span tunnel surrounding rock |
| CN116817777A (en) * | 2023-04-21 | 2023-09-29 | 中国铁建昆仑投资集团有限公司 | Tunnel surrounding rock deformation prediction method based on high-precision sensor and transducer |
-
2021
- 2021-07-27 CN CN202121717649.7U patent/CN215810790U8/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115560723A (en) * | 2022-12-07 | 2023-01-03 | 中国矿业大学(北京) | Advanced measurement method for instantaneous deformation of large-span tunnel surrounding rock |
| CN116817777A (en) * | 2023-04-21 | 2023-09-29 | 中国铁建昆仑投资集团有限公司 | Tunnel surrounding rock deformation prediction method based on high-precision sensor and transducer |
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| CN215810790U8 (en) | 2022-04-12 |
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| CU01 | Correction of utility model |
Correction item: Patentee|Address|Patentee Correct: Changjiang survey, planning, design and Research Co., Ltd.|430010 No. 1863 Jiefang Avenue, Hubei, Wuhan|Construction Administration Bureau of the middle route of South-to-North Water Transfer Project False: Changjiang survey, planning, design and Research Co., Ltd.|430010 No. 1863 Jiefang Avenue, Hubei, Wuhan|Construction Administration Bureau of the middle route of South-to-North Water Transfer Project Number: 06-02 Volume: 38 Correction item: Patentee|Address|Patentee Correct: Changjiang survey, planning, design and Research Co., Ltd.|430010 No. 1863 Jiefang Avenue, Hubei, Wuhan|Construction Administration Bureau of the middle route of South-to-North Water Transfer Project False: Changjiang survey, planning, design and Research Co., Ltd.|430010 No. 1863 Jiefang Avenue, Hubei, Wuhan|Construction Administration Bureau of the middle route of South-to-North Water Transfer Project Number: 06-02 Page: The title page Volume: 38 |
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| CU01 | Correction of utility model |