CN116609166A - Model test shield segment capable of realizing soil pressure monitoring - Google Patents

Model test shield segment capable of realizing soil pressure monitoring Download PDF

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Publication number
CN116609166A
CN116609166A CN202310440727.0A CN202310440727A CN116609166A CN 116609166 A CN116609166 A CN 116609166A CN 202310440727 A CN202310440727 A CN 202310440727A CN 116609166 A CN116609166 A CN 116609166A
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CN
China
Prior art keywords
soil pressure
jurisdiction
sensor
shield
monitoring
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Pending
Application number
CN202310440727.0A
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Chinese (zh)
Inventor
孟旭
路德春
林庆涛
靳浩然
杜修力
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Beijing University of Technology
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Beijing University of Technology
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Publication date
Application filed by Beijing University of Technology filed Critical Beijing University of Technology
Priority to CN202310440727.0A priority Critical patent/CN116609166A/en
Publication of CN116609166A publication Critical patent/CN116609166A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/08—Lining with building materials with preformed concrete slabs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0028—Force sensors associated with force applying means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02—Details
    • G01N3/06—Special adaptations of indicating or recording means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0001—Type of application of the stress
    • G01N2203/0003—Steady
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0019—Compressive
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003—Generation of the force
    • G01N2203/0032—Generation of the force using mechanical means
    • G01N2203/0033—Weight
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058—Kind of property studied
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0075—Strain-stress relations or elastic constants
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0676—Force, weight, load, energy, speed or acceleration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Civil Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

The invention discloses a model test shield segment capable of realizing soil pressure monitoring and sensor replacement functions. The device is including the section of jurisdiction subassembly, soil pressure monitoring subassembly, installation component, seal assembly that connects gradually, through mechanism settings such as section of jurisdiction preset grouting hole, concatenation panel, seal groove, can really simulate shield tunnel construction section of jurisdiction concatenation in model test, the section of jurisdiction is sealed, shield tail slip casting process after assembling, the soil pressure monitoring subassembly is annular to buries in model test shield section of jurisdiction support, realize the monitoring of soil pressure around the section of jurisdiction, installation device links to each other soil pressure monitoring subassembly and section of jurisdiction structure, installation device can be installed together with monitoring subassembly after shield section of jurisdiction concatenation is accomplished, this installation component is convenient for demolish the change, and can realize that the soil pressure box receives the load face and meet closely of soil body, make the sensor atress even, relatively accurate reflection country rock section of jurisdiction atress deformation law and country rock pressure development process.

Description

Model test shield segment capable of realizing soil pressure monitoring
Technical Field
The invention belongs to the technical field of underground engineering construction model tests, and particularly relates to a model test shield segment capable of realizing soil pressure monitoring, in particular to a segment structure capable of realizing soil pressure monitoring and sensor replacement functions.
Background
In the process of a shield method construction model test, a shield segment of a newly built tunnel is a very important key component. Relevant tests on deformation and stress are selected according to research requirements in the test process, wherein the surrounding rock pressure is one of important monitoring content. By implementing monitoring engineering such as surrounding rock pressure and the like and combining means such as numerical simulation analysis and the like, the tunnel design and construction scheme progress can be optimized under similar engineering conditions, including the selection of an excavation mode, the selection of a supporting structure and strength and the like, and the further optimization of the design and construction organization scheme is facilitated, so that the economy of tunnel construction investment, the reliability of design and the safety of construction are ensured.
At present, surrounding rock pressure monitoring is mainly carried out by means of a soil pressure box pre-fixed on the outer surface of a prefabricated segment in the process of a shield construction model test. The monitoring means has the defect that the error of measured data is large because the soil pressure box cannot be contacted with surrounding soil in the installation process; the damage condition of the soil pressure box is easy to be caused in the process of installation and grouting; aging of the sensor with time. When the sensor on the duct piece is found that data cannot be accurately measured after being installed, the sensor cannot be conveniently checked and replaced.
Therefore, it is necessary to design a shield segment for a model test, which is convenient to install, easy to overhaul and replace, and capable of monitoring the surrounding soil pressure of the shield segment, so as to meet the requirements of the underground engineering shield construction model test.
Disclosure of Invention
In view of the above, the invention provides a model test shield segment capable of realizing soil pressure monitoring and sensor replacement functions.
In order to realize the functions, the invention adopts the following technical scheme:
the structure mainly comprises a duct piece, a surrounding rock pressure monitoring component (a soil pressure box and a mounting device), a sealing component and the like. Considering the characteristics of a shield construction method and a model test comprehensively, each annular pipe piece of the pipe piece assembly is split into four splicing blocks which are respectively a sealing block, a connecting block A, a connecting block B and a standard block, the four splicing blocks are spliced to form an annular pipe piece, the tunnel axial direction is taken as the longitudinal direction, the tunnel radial direction is taken as the transverse direction, the edges of the two transverse ends of the standard block are long straight edges which are parallel in a I shape together, the two long straight edges with equal length are distributed on the two sides of the longitudinal central axis of the standard block, and the edges of the two longitudinal ends are arc-shaped of the shield tunnel. The connecting block A is in a shape that one end of the connecting block A is in a transverse direction and is parallel to a longitudinal long straight edge, the other end of the connecting block A is oblique to the longitudinal long oblique edge, edges at two transverse ends are two long straight edges and long oblique edges which are in an I/I shape together, edges at two longitudinal ends are arc-shaped of a shield tunnel, one end of the connecting block B is in a transverse direction and is parallel to the longitudinal long straight edge, the other end of the connecting block B is oblique to the longitudinal long oblique edge, edges at two transverse ends are two long straight edges and long oblique edges which are in an I/O shape together, and edges at two longitudinal ends are arc-shaped of the shield tunnel. The shape of the top sealing block is that the edges at the two transverse ends are long oblique sides which are parallel in an eight shape, the two long oblique sides with equal length are distributed at the two sides of the longitudinal central axis of the top sealing block, and the edges at the two longitudinal ends are arc-shaped of the shield tunnel.
Preferably, the contact surface that the different section of jurisdiction pieces of each ring section of jurisdiction are connected all sets up the concatenation panel, reserve the screw hole site on the concatenation panel, the contact surface that the different ring section of jurisdiction piece of longitudinal direction is connected all sets up the concatenation panel, reserve the screw hole site on the concatenation panel, when each ring section of jurisdiction splice installation, the standard piece is placed in tunnel section below, connecting block A and connecting block B place in standard piece both sides respectively, and splice with horizontal vertically edge and standard piece, the block of capping is settled directly over the tunnel section at last, and splice with two long hypotenuses in connecting block A and connecting block B respectively and install, the concatenation panel structure can be convenient carry out the assembly between the ring direction section of jurisdiction piece and between the different ring section of longitudinal direction, the assembly process is unanimous with in the actual engineering, can simulate shield section of jurisdiction concatenation process truly.
Preferably, in order to truly simulate the working state of sealing and water-impermeable after the segment splicing of the shield tunnel in the model test is completed, the embodiment of the invention provides a shield segment sealing assembly for the model test, wherein a rubber sealing strip mounting groove is reserved on a circumferential splicing panel connected with the circumferential segment, the mounting groove is positioned at the outer side of the circumferential splicing panel, a rubber sealing strip mounting groove is reserved on a longitudinal splicing panel connected with different longitudinal annular segments, the mounting groove is positioned at the outer side of the longitudinal splicing panel, a rubber sealing groove is pre-adhered before segment splicing, and a screw is fastened during segment splicing, so that sealing strips are closely adhered to achieve the sealing effect.
Preferably, in order to realize the grouting reinforcement process after the splicing of the shield tunnel segment is truly simulated in the model test, the embodiment of the invention provides a shield segment grouting structure for the model test, three reinforcing ribs are additionally arranged in a segment block, the middle part of each reinforcing rib is thickened, grouting holes and soil pressure sensor monitoring holes are reserved at the thickened part of the middle part of each reinforcing rib, and the holes are simultaneously used as mounting supports of surrounding rock pressure monitoring components and mounting devices. Different ring segments consider the staggered joint installation construction requirement in advance when prefabricating, and the reserved grouting holes are guaranteed to be right above the assembled segments.
Further, in order to realize the monitoring of surrounding rock pressure in a model test, the embodiment of the invention provides a shield segment surrounding rock pressure monitoring assembly for the model test, which comprises a strain type soil pressure box and a mounting device, wherein the loading surface end of the strain type soil pressure box extends out of the shield segment and is abutted against an outer soil layer, so as to measure the soil pressure value, the soil pressure box is fixed through the mounting device, the position of the soil pressure box in the mounting device can be finely adjusted while the soil pressure box is fixed, so as to protect the soil pressure box, two reinforcing ribs are respectively selected from a standard block, a connecting block A, a connecting block B and an inner reinforcing rib of a sealing block segment of a soil pressure monitoring ring to be used as mounting supports of the surrounding rock pressure monitoring assembly, the structure can realize the circumferential arrangement of the surrounding rock pressure monitoring assembly in a segment circle, can realize the circumferential monitoring direction of the surrounding rock pressure according to the monitoring requirements, and can realize the mounting of the monitoring assembly after the segment splicing and mounting is finished, and the construction and mounting are convenient.
Further, in order to realize convenient installation of the monitoring component and sealing of the monitoring position, the embodiment of the invention provides a device for installing a shield segment soil pressure sensor for a model test, which comprises a round steel cylinder with an upper cover at the upper part, a base connected with a segment at the lower part, a sensor cable hole reserved in the middle of the steel cylinder, and a bolt installation hole reserved on the base and connected with the segment. The inside diameter of the circular steel cylinder is 2-3 mm larger than the diameter of the soil pressure box, the length of the circular steel cylinder is equal to the depth of the reserved hole of the shield segment for the model, so that the sealing of the hole of the sensor is realized, the mounting device is sealed by arranging a support sealing gasket when being connected with the segment, and the mounting device is tightly connected with the mounting support on the segment through screws, so that the sealing purpose is achieved.
Preferably, the installation device comprises a hollow round steel cylinder, a threading hole is formed in the bottom of the installation device and used for laying a cable of the soil pressure box, the cable of the soil pressure box can be directly threaded out through the installation device, the cable can be protected, and other structures do not need to be additionally arranged to thread out of the cable. The installation device is connected with the soil pressure box, can be conveniently and rapidly disassembled, and is convenient for replacing the sensor in the test process.
Preferably, in order to realize the installation process of the soil pressure monitoring assembly during monitoring surrounding rock pressure around the pipe piece in the model test, connecting screw hole sites are preset around the middle soil pressure sensor monitoring hole sites of the reinforcing ribs inside the pipe piece, so that the soil pressure box and the installation device are installed. The installation device is characterized in that the installation device-bottom is also reserved with screw hole sites for installation, the installation device and the installation hole sites of the reserved installation device on the duct piece are concentric and are arranged in equal size, the screw hole sites respectively correspond, and the position of the installation device is convenient to adjust.
Preferably, the installation device is connected with the soil pressure box, after the shield segment for the model test is assembled, the installation of the soil pressure box, the installation device and the support sealing gasket is carried out, the installation device is connected with one end of the soil pressure box, which is far away from the loading surface, in a pasting mode, after the shield segment is installed, the loading surface of the soil pressure box is abutted to the soil body on the outer side, so that the soil pressure box is uniformly stressed, the loading surface is truly contacted with the soil body on the outer side, and the pressure of the soil body on the segment structure can be accurately monitored by the soil body pressure sensor monitoring assembly.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the shield segment structure for the model test is formed by splicing four segments of a top sealing block, a connecting block A, a connecting block B and a standard block, and the problems of segment splicing, segment sealing and tail grouting after assembly in the real simulation of shield tunnel construction in the model test are solved through segment preset grouting holes, splicing panels, sealing grooves and other mechanism settings, and the implementation of model test splicing work is easy, so that the authenticity of the shield model test is ensured.
2. The soil pressure monitoring assembly provided by the invention realizes monitoring of the surrounding rock pressure value of the segment through the soil pressure box embedded in the model test shield segment support in a circumferential direction, and can enable the loading surface of the soil pressure box to be abutted against the outside soil body after the shield segment is installed, so that the soil pressure box is uniformly stressed and truly contacts with the outside soil body, the stress deformation rule of the segment and the surrounding rock pressure development process are reflected relatively accurately, and the accuracy of monitoring the soil pressure of the shield model test is ensured.
3. According to the sensor mounting device, the soil pressure monitoring assembly is connected with the pipe piece structure, the monitoring assembly is fixed in the steel cylinder of the mounting device through pasting, the mounting device is connected with the monitoring assembly to facilitate dismounting and replacement, the detection is conveniently carried out when the monitoring value of the sensor is inaccurate, the tight connection between the loading surface of the soil pressure box and the soil body can be realized, and the monitoring safety of the shield model test is improved.
Drawings
Fig. 1 is a schematic view of the segment structure of the present invention.
Fig. 2 is a schematic view of the assembled segment according to the present invention.
Fig. 3 is a schematic view of the structure and assembly of the mounting assembly of the present invention.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic diagram of a model test shield segment structure capable of realizing soil pressure monitoring according to the present invention; FIG. 2 is a schematic diagram of assembly composition of a model test shield segment provided by the invention; fig. 3 is a schematic view of a mounting device structure and an assembly of a monitoring component according to the present invention.
In a specific embodiment, the invention provides a model test shield segment structure capable of realizing soil pressure monitoring, which mainly comprises a shield segment sealing top block (1), a connecting block A (2), a connecting block B (3), a standard block (4), a sensor mounting device (11), a soil pressure box (12) and sealing components (14) (15) (16), and is characterized in that: each ring segment of the model test shield segment is formed by splicing a shield segment sealing block (1), a connecting block A (2), a connecting block B (3) and a standard block (4), a soil pressure monitoring component, namely a soil pressure box (12), is installed and fixed on a sensor installation device (11), and when a monitoring component is installed, the installation device (11) is inserted into a sensor reserved hole (10) reserved on the segment and is connected and fixed with the segment through an installation device base (11-2), and monitoring data of the soil pressure box (12) are transmitted through a transmission cable (13) connected and fixed at the tail part of the soil pressure box (12).
The invention provides a model test shield segment which is a main assembly component of a newly built tunnel in shield test simulation, is an innermost barrier of a newly built tunnel and bears the actions of resisting soil layer pressure, underground water pressure and some special loads.
The design of the model test shield segment sealing block (1), the connecting block A (2), the connecting block B (3) and the standard block (4) is as follows: each annular duct piece is formed by splicing a shield duct piece sealing block (1), a connecting block A (2), a connecting block B (3) and a standard block (4), so that the assembly of a test site is facilitated, a longitudinal contact panel (5) is designed between longitudinal different annular duct pieces, a longitudinal connecting bolt fixing hole (6) is reserved, a circumferential contact panel (7) is designed between annular different duct pieces, and a circumferential connecting bolt fixing hole (8) is reserved.
For guaranteeing that stable in structure sets up inside stiffening rib (17) of section of jurisdiction of needs of sensor and slip casting, realizes shield tail slip casting, has reserved grouting holes (9) on one of the stiffening rib of capping piece (1), for realizing the soil pressure monitoring function around the section of jurisdiction, selects two reserved sensor preformed holes (10) in shield section of jurisdiction capping piece (1), connecting block A (2), connecting block B (3), inside three stiffening rib of standard block (4).
The shield segment for the model test is provided with grooves at the splicing seams of the annular segments of different longitudinal rings and the splicing seams of the annular segments of different annular rings of the tunnel, and the rubber sealing strip is stuck during installation, so that water leakage is avoided after installation. In order to realize the longitudinal and circumferential sealing of the duct piece, grooves are reserved in the longitudinal contact panel (5) and the circumferential contact panel (7) so as to be convenient for installing the circumferential sealing strip (15) and the longitudinal sealing strip (16) for sealing.
The design of the mounting assembly is as follows: for adapting to the soil pressure box (12), a circular steel cylinder (11-1) with no upper cover is arranged on the upper part of the installation device (11), a sensor cable hole (11-3) is reserved in the middle of the steel cylinder, a device base (11-2) connected with the duct piece is arranged on the lower part of the steel cylinder, and a bolt installation hole (11-4) connected with the duct piece is reserved on the device base. The inside diameter of the circular steel cylinder is 2-3 mm larger than the diameter of the soil pressure box, the length of the circular steel cylinder is equal to the thickness of the concrete jacking pipe or the open caisson, for realizing the sealing of the sensor hole, the mounting device (11) is provided with a support sealing gasket (14) for sealing when being connected with the pipe piece, and the mounting assembly and the monitoring assembly can be conveniently and rapidly detached, so that the sensor can be conveniently replaced in the test process.
The monitoring component is designed as follows: the cable (13) for transmitting data is positioned right below the center of the soil pressure box (12) and is in sealing connection with the mounting device (11). The cable (13) and the sensor cable hole (11-3) on the mounting device are sealed by sealant.

Claims (4)

1. The utility model provides a can realize earth pressure monitoring's model test shield segment, includes shield segment seal ejector block (1), connecting block A (2), connecting block B (3), standard block (4), sensor installation device (11) and soil pressure cell (12), characterized by: each ring segment of the model test shield segment is formed by splicing a shield segment sealing block (1), a connecting block A (2), a connecting block B (3) and a standard block (4), and a soil pressure monitoring component, namely a soil pressure box (12), is installed and fixed on a sensor installation device (11); when the monitoring component is installed, the installation device (11) is inserted into a sensor preformed hole (10) reserved on the pipe piece and is fixedly connected with the pipe piece through the installation device base (11-2), and monitoring data of the soil pressure box (12) are transmitted through a transmission cable (13) fixedly connected to the tail of the soil pressure box (12).
2. The model test shield segment capping block (1), the connecting block A (2), the connecting block B (3) and the standard block (4) according to claim 1 are designed as follows: for the convenience of test site assembly, a longitudinal contact panel (5) is designed between longitudinal different ring pipe sheets and a longitudinal connecting bolt fixing hole (6) is reserved, a circumferential contact panel (7) is designed between circumferential different ring pipe sheets and a circumferential connecting bolt fixing hole (8) is reserved, reinforcing ribs (17) inside the pipe sheets are arranged for ensuring stable structure arrangement of sensors and grouting, shield tail grouting is realized, grouting holes (9) are reserved on one of the reinforcing ribs of a capping block (1), for realizing a function of monitoring soil pressure around the pipe sheets, two reserved sensor reserved holes (10) are selected from three reinforcing ribs inside a shield pipe sheet capping block (1), a connecting block A (2), a connecting block B (3) and a standard block (4), and grooves are reserved on the longitudinal contact panel (5) and the circumferential contact panel (7) for realizing longitudinal and circumferential sealing of the pipe sheets so as to seal a mounting circumferential sealing strip (15) and a longitudinal sealing strip (16).
3. The mounting device of claim 1, wherein: in order to adapt to the soil pressure box (12), a circular steel cylinder (11-1) with no upper cover is arranged at the upper part of the sensor mounting device (11), a sensor cable hole (11-3) is reserved in the middle of the steel cylinder, a device base (11-2) connected with the duct piece is arranged at the lower part of the steel cylinder, and a bolt mounting hole (11-4) connected with the duct piece is reserved on the device base (11-2); the inside diameter of the circular steel cylinder is 2-3 mm larger than the diameter of the soil pressure box, the length of the circular steel cylinder is equal to the thickness of the concrete jacking pipe or the open caisson, for realizing the sealing of the sensor hole, the mounting device (11) is provided with a support sealing gasket (14) for sealing when being connected with the pipe piece, and the mounting assembly and the monitoring assembly can be conveniently and rapidly detached, so that the sensor can be conveniently replaced in the test process.
4. The monitoring assembly of claim 1, wherein: the cable (13) for transmitting data is positioned right below the center of the soil pressure box (12) and is in sealing connection with the sensor mounting device (11).
CN202310440727.0A 2023-04-23 2023-04-23 Model test shield segment capable of realizing soil pressure monitoring Pending CN116609166A (en)

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Application Number Priority Date Filing Date Title
CN202310440727.0A CN116609166A (en) 2023-04-23 2023-04-23 Model test shield segment capable of realizing soil pressure monitoring

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Application Number Priority Date Filing Date Title
CN202310440727.0A CN116609166A (en) 2023-04-23 2023-04-23 Model test shield segment capable of realizing soil pressure monitoring

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Publication Number Publication Date
CN116609166A true CN116609166A (en) 2023-08-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116990143A (en) * 2023-09-27 2023-11-03 中交三航(南通)海洋工程有限公司 Shield constructs section of jurisdiction mechanics analogue test device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116990143A (en) * 2023-09-27 2023-11-03 中交三航(南通)海洋工程有限公司 Shield constructs section of jurisdiction mechanics analogue test device
CN116990143B (en) * 2023-09-27 2023-11-28 中交三航(南通)海洋工程有限公司 Shield constructs section of jurisdiction mechanics analogue test device

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