Embedded type shield segment multi-parameter monitoring device

Abstract

The invention discloses a multi-parameter monitoring device for an embedded shield segment. The multi-parameter monitoring device comprises an earth pressure and osmotic pressure integrated monitoring module, a steel bar stress monitoring module, an equipment bin and a mounting platform, a wireless transmission module, a vibration monitoring module and a power supply module are arranged in the equipment bin; the mounting platform and the equipment bin are fixed on a shield segment reinforcement cage; the soil pressure and osmotic pressure integrated monitoring module is arranged on the mounting platform in a height-adjustable manner; the soil pressure and osmotic pressure integrated monitoring module is used for monitoring the osmotic pressure around the shield segment and the soil pressure. The earth pressure sensor, the osmotic pressure sensor, the vibration sensor and the steel bar stress sensor are integrated, key parameters such as internal stress, earth pressure, osmotic pressure and vibration of the shield segment can be comprehensively monitored in real time, potential safety hazards can be timely found and early warned, and the safety and reliability of shield construction are improved.

Description

Technical Field

[0001] The invention relates to the technical field of multi-parameter monitoring of tunnel engineering, and in particular to a multi-parameter monitoring device for an embedded shield segment. Background Art

[0002] Shield tunnel engineering occupies an important position in the process of modern urbanization. As an advanced construction technology, shield tunnels have been widely used in urban underground transportation construction by constructing segment structures around the tunnel to form the tunnel wall. However, the tunnel construction environment is complex, so it is necessary to monitor and analyze the key parameters of the shield segment stress changes, soil pressure changes, seepage pressure changes, and vibration in real time.

[0003] At present, the monitoring methods for shield segments mainly rely on some simple sensing equipment to monitor the surface of the segments. Although these methods can provide certain data support, they still have significant limitations, such as limited installation location, susceptibility to external interference, and incomplete monitoring data. In addition, for key parameters such as soil pressure and seepage pressure on the facing soil, traditional monitoring methods are difficult to cover the ideal range and cannot achieve the required high accuracy. These technical limitations are particularly evident in complex geological conditions and high-risk engineering environments.

[0004] Therefore, it is necessary to design a multi-parameter monitoring device for embedded shield segments to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies of the prior art and to provide a multi-parameter monitoring device for an embedded shield segment.

[0006] The technical solution of the present invention is: an embedded shield segment multi-parameter monitoring device, including an integrated soil pressure and seepage pressure monitoring module, a steel bar stress monitoring module, an equipment compartment and an installation platform; the equipment compartment is provided with a wireless transmission module, a vibration monitoring module and a power supply module; the installation platform and the equipment compartment are fixed on the shield segment steel cage; the integrated soil pressure and seepage pressure monitoring module is height-adjustably arranged on the installation platform; the integrated soil pressure and seepage pressure monitoring module is used to monitor the seepage pressure and soil pressure around the shield segment; the steel bar stress monitoring module is penetrated on the steel bars of the shield segment steel cage, and is used to monitor the stress of the steel bars of the shield segment steel cage; the vibration monitoring module is used to monitor the vibration frequency of the shield segment steel cage; the power supply module supplies power to the wireless transmission module, the vibration monitoring module, the integrated soil pressure and seepage pressure monitoring module and the steel bar stress monitoring module; the wireless transmission module is used to transmit the data monitored in real time by each module.

[0007] The installation platform is installed in the shield segment steel cage through four draw hooks fixed to the shield segment steel cage, and the installation platform is welded and fixed to the draw hooks.

[0008] The equipment bin is installed in the shield segment steel cage through two installation columns fixed to the shield segment steel cage, and the equipment bin is fixed to the installation columns by welding.

[0009] Both ends of the installation column are provided with anti-skid sleeves; the installation column provided with the anti-skid sleeves is tied to the shield segment steel cage by steel wire.

[0010] The soil pressure and seepage pressure integrated monitoring module includes a protective shell and a soil pressure sensor and a seepage pressure sensor arranged in the protective shell; an adjustment platform is arranged above the mounting platform; the protective shell is arranged on the adjustment platform; the adjustment platform is installed on the mounting platform through multiple adjustment screws.

[0011] The soil pressure sensor is located below the middle support column of the protective shell, and is composed of multiple groups of cylinders. Sensitive elements are arranged inside to sense changes in soil pressure. The seepage pressure sensor is arranged on one side of the soil pressure sensor, and a filter element is arranged above it to prevent impurities from entering.

[0012] The bottom of the equipment compartment is detachably connected with an antenna port.

[0013] The protective shell is made of stainless steel, and the surface of the protective shell is electroplated to increase the surface roughness; a plurality of support columns are arranged inside the protective shell, and epoxy resin glue is also injected inside the protective shell.

[0014] The steel bar stress monitoring module includes an asymmetric protective shell and the steel bar stress sensor; a clamping block for clamping the steel bars of the shield segment steel cage is provided inside the protective shell; the steel bar stress sensor is fixed in the clamping block.

[0015] A circle of expansion water stop strip is provided between the connection surface between the steel bar stress monitoring module and the steel bars of the shield segment steel cage.

[0016] By adopting the above technical scheme, the present invention has the following beneficial effects: the present invention integrates earth pressure sensors, seepage pressure sensors, vibration sensors and steel bar stress sensors, and can perform real-time and comprehensive monitoring of key parameters such as internal stress, earth pressure, seepage pressure and vibration of shield segments, which helps to timely discover and warn of potential safety hazards, thereby improving the safety and reliability of shield construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2This is a schematic diagram of the structure of the present invention after removing the steel cage of the shield segment.

[0020] Figure 3 It is a schematic diagram of the internal structure of the soil pressure and seepage pressure integrated monitoring module of the present invention.

[0021] Figure 4 It is a schematic diagram of the internal structure of the steel bar stress monitoring module of the present invention.

[0022] Figure 5 It is a schematic diagram of the internal structure of the equipment warehouse of the present invention.

[0023] The reference numerals in the accompanying drawings are:

[0024] Soil pressure and seepage pressure integrated monitoring module 1, protective shell 1-1, soil pressure sensor 1-2, seepage pressure sensor 1-3, adjustment platform 1-4, adjustment screw 1-5, steel stress monitoring module 2, equipment compartment 3, installation platform 4, wireless transmission module 5, vibration monitoring module 6, power supply module 7, shield segment steel cage 8, hook 9, installation column 10, anti-slip sleeve 11, antenna port 12. DETAILED DESCRIPTION

[0025] (Example 1)

[0026] See Figure 1 , a buried shield segment multi-parameter monitoring device of this embodiment includes a soil pressure and seepage pressure integrated monitoring module 1, a steel bar stress monitoring module 2, an equipment compartment 3 and an installation platform 4; the equipment compartment 3 is provided with a wireless transmission module 5, a vibration monitoring module 6 and a power supply module 7; the installation platform 4 and the equipment compartment 3 are fixed on the shield segment steel cage 8; the soil pressure and seepage pressure integrated monitoring module 1 is arranged on the installation platform 4 with adjustable height; the soil pressure and seepage pressure integrated monitoring module 1 is used to monitor the seepage pressure and soil pressure around the shield segment; the steel bar stress monitoring module 2 is penetrated on the steel bars of the shield segment steel cage 8, and is used to monitor the stress of the steel bars of the shield segment steel cage 8; the vibration monitoring module 6 is used to monitor the vibration frequency of the shield segment steel cage 8; the power supply module 7 supplies power to the wireless transmission module 5, the vibration monitoring module 6, the soil pressure and seepage pressure integrated monitoring module 1 and the steel bar stress monitoring module 2; the wireless transmission module 5 is used to transmit the data monitored in real time by each module. As a preferred option, the unlimited transmission module adopts NB-IoT wireless transmission, which realizes efficient wireless data transmission, effectively reduces the complexity of wiring and signal interference problems, and greatly improves the convenience of project implementation.

[0027] Furthermore, in order to facilitate the installation of the installation platform 4 , the installation platform 4 is installed in the shield segment steel cage 8 through four hooks 9 fixed to the shield segment steel cage 8 , and the installation platform 4 is fixed to the hooks 9 by welding.

[0028] Furthermore, in order to facilitate the installation of the equipment bin 3 , the equipment bin 3 is installed in the shield segment steel cage 8 through two installation columns 10 fixed to the shield segment steel cage 8 , and the equipment bin 3 is fixed to the installation columns 10 by welding.

[0029] Furthermore, in order to ensure the stability of the installation of the equipment compartment 3, anti-skid sleeves 11 are provided at both ends of the installation column 10; the anti-skid sleeves 11 of the installation column 10 are tied to the shield segment steel cage 8 by steel wire.

[0030] Furthermore, the soil pressure and seepage pressure integrated monitoring module 1 includes a protective shell 1-1 and a soil pressure sensor 1-2 and a seepage pressure sensor 1-3 arranged in the protective shell 1-1; an adjustment platform 1-4 is arranged above the installation platform 4; the protective shell 1-1 is arranged on the adjustment platform 1-4; the adjustment platform 1-4 is installed on the installation platform 4 through a plurality of adjustment screws 1-5, and by adjusting the adjustment screws 1-5, the soil pressure and seepage pressure integrated monitoring module 1 can adapt to the requirements of different construction environments and shield segment sizes, ensuring the accuracy and reliability of the monitoring data. In order to prevent moisture from invading the sensor during the pouring process, the protective shell 1-1 is wrapped with a BW type water-swelling waterstop strip.

[0031] Furthermore, the earth pressure sensor 1-2 is located below the middle support column of the protective shell 1-1, and is composed of multiple groups of cylinders. Sensitive elements are arranged inside to sense changes in soil pressure. The sensor adopts a cross elastic body strain structure, which can accurately measure the earth pressure borne by the shield segment, so as to understand its stress conditions in underground engineering; the seepage pressure sensor 1-3 is arranged on one side of the earth pressure sensor 1-2, and a filter element 1-6 is arranged above it to prevent impurities from entering, so as to avoid damage to the sensing equipment.

[0032] Furthermore, the bottom of the equipment compartment 3 is detachably connected with an antenna port 12, which is also an inspection port and is encapsulated with engineering ABS plastic, thereby further improving the transmission efficiency of wireless signals. In order to meet the needs of daily maintenance and later hardware upgrades, the equipment compartment 3 is specially designed with a convenient inspection port, namely the antenna port 12, located at the end of the equipment compartment 3, which is not only convenient for operators to perform maintenance and updates, but also effectively improves the transmission efficiency of wireless signals and extends the service life of the equipment.

[0033] Furthermore, the protective shell 1-1 is made of 316 stainless steel, which significantly improves the anti-corrosion performance of the device, and the surface of the protective shell 1-1 is electroplated to increase the surface roughness, thereby enhancing the bonding strength and adhesion of the material; a plurality of support columns are provided inside the protective shell 1-1 to enhance the stability of the overall structure, and epoxy resin glue is also injected inside the protective shell 1-1 to achieve the protection effect of cables and sensors.

[0034] Furthermore, the steel bar stress monitoring module 2 includes an asymmetric protective shell and the steel bar stress sensor; the protective shell is also made of 316 stainless steel, and a clamp for clamping the steel bars of the shield segment steel cage 8 is provided inside the protective shell; the steel bar stress sensor is fixed in the clamp, which can accurately sense the stress changes of the steel bars inside the shield segment. When the steel bar is deformed by external force, the sensor converts its elastic deformation into an electrical signal, thereby realizing accurate monitoring of stress changes.

[0035] A circle of expansion water stop strip is provided between the connection surface between the steel bar stress monitoring module 2 and the steel bar of the shield segment steel bar cage 8 to prevent water from entering the steel bar stress monitoring module 2 during the pouring process.

[0036] The embedded shield segment multi-parameter monitoring device of this embodiment has significant advantages such as comprehensive monitoring, high integration, flexible installation, durability and stability, accurate data transmission and innovative monitoring methods, providing strong technical support for safety monitoring and data analysis of shield construction.

[0037] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-parameter monitoring device for buried shield segments, characterized in that: The invention comprises a soil pressure and seepage pressure integrated monitoring module (1), a steel bar stress monitoring module (2), an equipment bin (3) and an installation platform (4); the equipment bin (3) is provided with a wireless transmission module (5), a vibration monitoring module (6) and a power supply module (7); the installation platform (4) and the equipment bin (3) are fixed on a steel bar cage (8) of a shield segment; the soil pressure and seepage pressure integrated monitoring module (1) is arranged on the installation platform (4) in an adjustable height; the soil pressure and seepage pressure integrated monitoring module (1) is used to monitor the seepage pressure around the shield segment and the soil The steel bar stress monitoring module (2) is installed on the steel bars of the shield segment steel bar cage (8) and is used to monitor the stress of the steel bars of the shield segment steel bar cage (8); the vibration monitoring module (6) is used to monitor the vibration frequency of the shield segment steel bar cage (8); the power supply module (7) supplies power to the wireless transmission module (5), the vibration monitoring module (6), the soil pressure and seepage integrated monitoring module (1) and the steel bar stress monitoring module (2); the wireless transmission module (5) is used to transmit the data monitored in real time by each module.

2. The multi-parameter monitoring device for buried shield segments according to claim 1 is characterized in that: The installation platform (4) is installed in the shield segment steel cage (8) via four draw hooks (9) fixed to the shield segment steel cage (8), and the installation platform (4) is fixed to the draw hooks (9) by welding.

3. The multi-parameter monitoring device for buried shield segments according to claim 1 is characterized in that: The equipment bin (3) is installed in the shield segment steel cage (8) via two installation columns (10) fixed to the shield segment steel cage (8), and the equipment bin (3) is fixed to the installation columns (10) by welding.

4. The multi-parameter monitoring device for buried shield segments according to claim 3 is characterized in that: Both ends of the installation column (10) are provided with anti-skid sleeves (11); the installation column (10) provided with the anti-skid sleeves (11) is tied to the shield segment steel cage (8) by steel wire.

5. The multi-parameter monitoring device for buried shield segments according to claim 1 is characterized in that: The soil pressure and seepage pressure integrated monitoring module (1) comprises a protective shell (1-1) and a soil pressure sensor (1-2) and a seepage pressure sensor (1-3) arranged in the protective shell (1-1); an adjustment platform (1-4) is arranged above the installation platform (4); the protective shell (1-1) is arranged on the adjustment platform (1-4); and the adjustment platform (1-4) is installed on the installation platform (4) via a plurality of adjustment screws (1-5).

6. The multi-parameter monitoring device for buried shield segments according to claim 5 is characterized in that: The soil pressure sensor (1-2) is located below the middle support column of the protective shell (1-1), and is composed of a plurality of groups of cylinders, with sensitive elements arranged inside for sensing soil pressure changes; the seepage pressure sensor (1-3) is arranged on one side of the soil pressure sensor (1-2), and a filter element (1-6) is arranged above the soil pressure sensor (1-2) to prevent impurities from entering.

7. The multi-parameter monitoring device for buried shield segments according to claim 1 is characterized in that: The bottom of the equipment compartment (3) is detachably connected with an antenna port (12).

8. The multi-parameter monitoring device for buried shield segments according to claim 5 is characterized in that: The protective shell (1-1) is made of stainless steel, and the surface of the protective shell (1-1) is electroplated to increase the surface roughness; a plurality of support columns are arranged inside the protective shell (1-1), and epoxy resin glue is also injected inside the protective shell (1-1).

9. The multi-parameter monitoring device for buried shield segments according to claim 1, characterized in that: The steel bar stress monitoring module (2) comprises an asymmetric protective shell and the steel bar stress sensor; a clamping block for clamping the steel bars of the shield segment steel cage (8) is provided inside the protective shell; and the steel bar stress sensor is fixed in the clamping block.

10. The embedded shield segment multi-parameter monitoring device according to claim 1, characterized in that: A circle of expansion water stop strip is provided between the connection surface between the steel bar stress monitoring module (2) and the steel bars of the shield segment steel bar cage (8).

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