A monitoring device for shield tunnels
By pre-embedding internal threaded sleeves and monitoring mechanisms on the shield tunnel segments, and combining them with static level and laser rangefinder, the problem of sensor damage was solved, enabling multi-dimensional monitoring and data acquisition of the shield tunnel, and improving the reliability and timeliness of monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 南昌轨道交通集团有限公司地铁项目管理分公司
- Filing Date
- 2025-09-12
- Publication Date
- 2026-06-30
AI Technical Summary
In existing technologies, pre-embedded sensors are tightly bound to the tunnel segments and are difficult to replace, while external sensors are prone to damaging the tunnel segment structure and are unstable in vibration and humid environments, which cannot meet the long-term monitoring needs of shield tunnels.
An internally threaded sleeve is pre-embedded on the tunnel segment. Combined with a static level, laser rangefinder, and reflector, the monitoring mechanism is connected by bolts to achieve multi-dimensional sensing. The monitoring device includes a data acquisition box and a wireless transmission module, providing a reliable installation foundation and data acquisition.
It enables multi-dimensional sensing of tunnel segments, rapid and non-destructive installation, improves the reliability and timeliness of monitoring data, reduces damage to the segment structure, and adapts to vibration and humid environments.
Smart Images
Figure CN224435420U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shield tunnel construction technology, and in particular to a monitoring device for shield tunnels. Background Technology
[0002] As the main body of a tunnel (multiple segments forming a segment ring, and multiple segment rings assembled in a staggered manner to form a tunnel), the stress deformation, joint condition, and changes in the surrounding environment of the tunnel segments directly affect tunnel safety. With the development of intelligent tunnel operation and maintenance, multi-dimensional sensing of the tunnel segments is needed to provide a reliable solution for the full life-cycle safety assessment of the tunnel. Currently, monitoring of tunnel segments mainly relies on pre-embedded sensors or externally attached sensors. Pre-embedded sensors need to be embedded in the concrete during segment prefabrication, resulting in a strong bond between them and the segment, making replacement impossible once damaged. Externally attached sensors are mostly fixed by drilling or adhesive, which can easily damage the segment structure and is difficult to maintain long-term stable operation in vibrating and humid environments. Summary of the Invention
[0003] This invention provides a monitoring device for shield tunnels to overcome the above-mentioned problems.
[0004] To achieve the above objectives, the technical solution of this utility model is as follows:
[0005] A monitoring device for a shield tunnel includes: an internally threaded sleeve and several monitoring mechanisms, wherein the internally threaded sleeve is pre-embedded in the tunnel lining segment, and the monitoring mechanisms are connected to the internally threaded sleeve by bolts.
[0006] The monitoring mechanism includes a hydrostatic level, a first laser rangefinder and a first reflector arranged opposite each other, and a second laser rangefinder and a second reflector arranged opposite each other. The first laser rangefinder and the first reflector are respectively arranged on two different tube rings, while the second laser rangefinder and the second reflector are arranged on the same tube ring.
[0007] Furthermore, the monitoring mechanism also includes a first platform and a second platform connected by bolts to an internally threaded sleeve. The hydrostatic level and the first reflector are mounted on the first platform, and the first laser rangefinder and the second laser rangefinder are mounted on the second platform. The second reflector is connected to the internally threaded sleeve by bolts.
[0008] The first platform and the second platform are respectively set on two different tube rings, while the second platform and the second reflector are set on the same tube ring.
[0009] Furthermore, the first platform includes an inclined plate, a vertical plate, and a top plate. The vertical plate, the top plate, and the inclined plate are connected end to end to form a triangular structure. A reinforcing plate parallel to the top plate is fixed inside the triangular structure. The second platform has the same structure as the first platform.
[0010] Furthermore, it also includes a data acquisition box electrically connected to the monitoring mechanism. The data acquisition box is connected to an internally threaded sleeve by bolts. The data acquisition box contains a wireless transmission module, a data acquisition module, and a power supply. The data acquisition box is equipped with a display.
[0011] The static level, the first laser rangefinder, and the second laser rangefinder are all electrically connected to the acquisition module. The wireless transmission module and the display are also electrically connected to the acquisition module. The power supply provides power to the wireless transmission module, the acquisition module, and the display.
[0012] Furthermore, the static level is a vibrating wire type, and the acquisition box is also equipped with a vibrating wire sensor demodulator. The static level is connected to the acquisition module through the vibrating wire sensor demodulator, and the power supply is also used to provide power to the vibrating wire sensor demodulator.
[0013] Furthermore, the monitoring mechanism is electrically connected to the data acquisition box via a cable, and a cable protection sleeve is provided around the cable. The cable protection sleeve is fixed to the pipe segment by a cable clamp.
[0014] Furthermore, the top plate and the reinforcing plate are provided with wiring slots.
[0015] Beneficial effects:
[0016] This utility model provides a monitoring device for shield tunnels. It provides a reliable installation foundation for the monitoring mechanism through an internally threaded sleeve pre-embedded in the tunnel segments, enabling rapid and non-destructive installation. By setting up a static level, it acquires settlement data of the shield tunnel segments. By setting up a first laser rangefinder and a first reflector, it acquires the longitudinal opening between adjacent tunnel segment rings. By setting up a second laser rangefinder and a second reflector, it acquires the horizontal convergence of the tunnel segment rings, thus achieving multi-dimensional perception of the shield tunnel segments. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1This is a schematic diagram of the structure of a monitoring device for a shield tunnel, as disclosed in this utility model, installed inside the tunnel.
[0019] Figure 2 This is a schematic diagram of the structure of a monitoring device for a shield tunnel, which is installed inside the segment ring.
[0020] Figure 3 This is a schematic diagram of the monitoring mechanism of a monitoring device for a shield tunnel disclosed in this utility model;
[0021] Figure 4 This is a schematic diagram of the data acquisition box of a monitoring device for a shield tunnel disclosed in this utility model.
[0022] In the picture:
[0023] 11. Bolts; 12. Cable protection sleeve; 13. First platform; 131. Inclined plate; 132. Vertical plate; 133. Top plate; 134. Reinforcing plate; 14. Cable routing groove; 15. Second platform; 16. Static level; 171. First laser rangefinder; 172. Second laser rangefinder; 18. First reflector; 19. Second reflector;
[0024] 2. Segment rings;
[0025] 3. Cable clamps;
[0026] 4. Acquisition box; 41. Vibrating wire sensor demodulator; 42. Wireless transmission module; 43. Acquisition module; 44. Display; 45. Power supply. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0028] This embodiment provides a monitoring device for a shield tunnel, including: an internally threaded sleeve and several monitoring mechanisms. The number of internally threaded sleeves and monitoring mechanisms increases or decreases according to the tunnel length. The internally threaded sleeve is pre-embedded in the tunnel lining segments, such as... Figure 3As shown, the monitoring mechanism is connected to the internally threaded sleeve by bolt 11. In this embodiment, the internally threaded sleeve is a stainless steel sleeve with internal threads to avoid damage to the tunnel segment structure caused by traditional drilling installation. According to the specific conditions of the tunnel, the monitoring scheme is designed in advance. At the location where monitoring is required, tunnel segments with internally threaded sleeves are set up so that the installation foundation provided by the internally threaded sleeves can be used to make the location of the monitoring mechanism reasonably planned and adapt to different monitoring needs.
[0029] like Figure 3 As shown, the monitoring mechanism includes a hydrostatic level 16, a first laser rangefinder 171 and a first reflector 18 arranged opposite to each other, and a second laser rangefinder 172 and a second reflector 19 arranged opposite to each other. The first laser rangefinder 171 and the first reflector 18 are respectively arranged on two different segment rings 2 (i.e., respectively located on both sides of the longitudinal joint of the segment rings to monitor the change in the size of the longitudinal joint between the segment rings 2), while the second laser rangefinder 172 and the second reflector 19 are arranged on the same segment ring 2.
[0030] This embodiment provides a monitoring device for a shield tunnel. An internally threaded sleeve pre-embedded in the tunnel segments provides a reliable installation foundation for the monitoring mechanism. A static level 16 is used to acquire settlement data of the shield tunnel segments. A first laser rangefinder 171 and a first reflector 18 are used to acquire the longitudinal opening between adjacent tunnel segment rings. A second laser rangefinder 172 and a second reflector 19 are used to acquire the horizontal convergence of the tunnel segment rings, thus achieving multi-dimensional perception of the shield tunnel segments.
[0031] In a specific embodiment, such as Figures 1 to 3 As shown, the monitoring mechanism also includes a first platform 13 and a second platform 15 connected to an internally threaded sleeve by bolts 11. The hydrostatic level 16 and the first reflector 18 are mounted on the first platform 13, the first laser rangefinder 171 and the second laser rangefinder 172 are mounted on the second platform 15, and the second reflector 19 is connected to the internally threaded sleeve by bolts 11 (the second reflector 19 can be attached to the bolts 11).
[0032] The first platform 13 and the second platform 15 are respectively disposed on two different tube rings 2, and the second platform 15 and the second reflector 19 are disposed on the same tube ring 2.
[0033] In a specific embodiment, such as Figure 3As shown, the first platform 13 includes an inclined plate 131, an upright plate 132, and a top plate 133. The upright plate 132, the top plate 133, and the inclined plate 131 are connected end to end and welded to form a triangular structure. A reinforcing plate 134 parallel to the top plate 133 is welded inside the triangular structure. The top plate 133 and the reinforcing plate 134 are provided with wiring slots 14. The cables of the static level 16 and the laser rangefinder are both routed through the wiring slots 14. The second platform 15 has the same structure as the first platform 13.
[0034] In this embodiment, a static level 16 and a first reflector 18 are fixed on the top plate 133 and the reinforcing plate 134 of the first platform 13, respectively, and a second laser rangefinder 172 and a first laser rangefinder 171 are fixed on the top plate 133 and the reinforcing plate 134 of the second platform 15, respectively.
[0035] In a specific embodiment, such as Figure 1 As shown, it also includes a data acquisition box 4 electrically connected to the monitoring mechanism. The data acquisition box 4 is connected to an internally threaded sleeve via bolts 11, as shown. Figure 4 As shown, the inside of the acquisition box 4 is equipped with a wireless transmission module 42, an acquisition module 43 and a power supply 45, and the inside of the acquisition box 4 is equipped with a display 44.
[0036] The static level 16, the first laser rangefinder 171, and the second laser rangefinder 172 are all electrically connected to the acquisition module 43. The wireless transmission module 42 and the display 44 are all electrically connected to the acquisition module 43. The power supply 45 is used to provide power to the wireless transmission module 42, the acquisition module 43, and the display 44.
[0037] The wireless transmission module 42 can send the collected monitoring data to the host computer for storage, which significantly improves the timeliness of structural safety early warning and the scientific nature of operation and maintenance decisions, and has significant social and economic benefits. The display 44 can display the data collected by the monitoring agency, the voltage and current of the power supply 45, and the remaining power of the power supply 45.
[0038] In a specific embodiment, the hydrostatic level 16 is a vibrating wire type, such as... Figure 4 As shown, the acquisition box 4 also houses a vibrating wire sensor demodulator 41. The static level 16 can be connected to the acquisition module 43 via the vibrating wire sensor demodulator 41. The power supply 45 also provides power to the vibrating wire sensor demodulator 41. The digital sensor is then directly connected to the acquisition module 43 to acquire monitoring data. To expand the versatility of the acquisition box 4, a vibrating wire sensor demodulator 41 is additionally configured to convert the vibration frequency of the vibrating wire into an electrical signal. This makes the selection of the static level 16 more flexible, allowing for either vibrating wire or digital models, providing a flexible solution for tunnel lifecycle monitoring.
[0039] In a specific embodiment, the monitoring mechanism and the data acquisition box 4 are electrically connected via cables, such as... Figure 1 and Figure 3 As shown, a cable protection sleeve 12 is provided around the cable. The cable protection sleeve 12 is fixed to the tube segment by a cable fixing clip 3. The cable fixing clip 3 is also fixed to the tube segment by a sleeve with an internal thread to ensure the safety of the cable.
[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A monitoring device for a shield tunnel, characterized in that, include: An internal threaded sleeve and several monitoring mechanisms are provided, wherein the internal threaded sleeve is embedded in the tube segment and the monitoring mechanisms are connected to the internal threaded sleeve by bolts (11). The monitoring mechanism includes a hydrostatic level (16), a first laser rangefinder (171) and a first reflector (18) arranged opposite to each other, and a second laser rangefinder (172) and a second reflector (19) arranged opposite to each other. The first laser rangefinder (171) and the first reflector (18) are respectively arranged on two different tube rings (2), and the second laser rangefinder (172) and the second reflector (19) are arranged on the same tube ring (2).
2. The monitoring device for a shield tunnel according to claim 1, characterized in that, The monitoring mechanism also includes a first platform (13) and a second platform (15) connected to an internally threaded sleeve by bolts (11). The static level (16) and the first reflector (18) are set on the first platform (13), the first laser rangefinder (171) and the second laser rangefinder (172) are set on the second platform (15), and the second reflector (19) is connected to the internally threaded sleeve by bolts (11). The first platform (13) and the second platform (15) are respectively set on two different tube rings (2), and the second platform (15) and the second reflector (19) are set on the same tube ring (2).
3. The monitoring device for a shield tunnel according to claim 2, characterized in that, The first platform (13) includes an inclined plate (131), an upright plate (132) and a top plate (133). The upright plate (132), the top plate (133) and the inclined plate (131) are connected end to end to form a triangular structure. A reinforcing plate (134) parallel to the top plate (133) is fixed inside the triangular structure. The second platform (15) has the same structure as the first platform (13).
4. The monitoring device for a shield tunnel according to claim 1, characterized in that, It also includes a data acquisition box (4) electrically connected to the monitoring mechanism. The data acquisition box (4) is connected to an internal threaded sleeve by bolts (11). The data acquisition box (4) is equipped with a wireless transmission module (42), a data acquisition module (43) and a power supply (45) inside the box. The data acquisition box (4) is equipped with a display (44). The static level (16), the first laser rangefinder (171), and the second laser rangefinder (172) are all electrically connected to the acquisition module (43). The wireless transmission module (42) and the display (44) are all electrically connected to the acquisition module (43). The power supply (45) is used to provide power to the wireless transmission module (42), the acquisition module (43), and the display (44).
5. A monitoring device for a shield tunnel according to claim 4, characterized in that, The static level (16) is a vibrating wire type. The acquisition box (4) is also equipped with a vibrating wire sensor demodulator (41). The static level (16) is connected to the acquisition module (43) through the vibrating wire sensor demodulator (41). The power supply (45) is also used to provide power to the vibrating wire sensor demodulator (41).
6. A monitoring device for a shield tunnel according to claim 4, characterized in that, The monitoring mechanism and the data acquisition box (4) are electrically connected by a cable. The cable is covered with a cable protection sleeve (12), and the cable protection sleeve (12) is fixed to the pipe segment by a cable fixing clamp (3).
7. A monitoring device for a shield tunnel according to claim 3, characterized in that, The top plate (133) and the reinforcing plate (134) are provided with wiring slots (14).