Full-face convergence deformation measuring device and method for tunnel simulation test

Abstract

The application provides a tunnel simulation test full-section convergence deformation measuring device and measuring method, relates to the technical field of simulation test devices, and comprises an experimental tunnel body, convergence measuring instruments are arranged between the left and right sidewalls of the experimental tunnel body, a ruler frame is arranged at the left end of the convergence measuring instruments, two pressing plates are arranged on the ruler frame, the two pressing plates are gathered and separated at the same time, the rebound pulling of the extension spring sleeved on the limiting slide rod is used to ensure that the ruler belt is more compact in the winding state, loose deviation during winding and unwinding of the ruler belt is effectively avoided, the measuring efficiency of the device is improved, the problems that the steel ruler of the existing tunnel simulation test full-section convergence deformation measuring device has tension, is prone to loose deviation during winding and unwinding, affects the measuring efficiency, is not easy to position the ruler belt according to specific use conditions at any time, and the frequent measuring and pulling process is prone to loosen the fixed hooks of the wall body, and causes certain errors in the measuring result are solved.

Description

Technical Field

[0001] This invention relates to the field of simulation test equipment technology, and in particular to a device and method for measuring the convergent deformation of the entire cross section in a tunnel simulation test. Background Technology

[0002] Physical simulation experiments utilize similar materials at a certain similarity ratio to scale up problems from the actual engineering field to laboratory dimensions. This allows for a direct reflection of changes in parameters such as stress and deformation of soil and rock during actual construction. It is an important research method in geotechnical engineering, effectively addressing the challenges and high costs associated with on-site testing. In tunnel excavation physical simulation experiments, a crucial parameter is the surrounding rock convergence deformation. The timely response of the surrounding rock caused by excavation is a vital parameter reflecting the deformation mechanism of the tunnel's surrounding rock.

[0003] Existing tunnel simulation test full-section convergence deformation measurement devices typically use a measuring tape consisting of a steel tape and a micrometer. Because the steel tape is under tension, it is prone to loosening and shifting during use, affecting measurement efficiency. Additionally, the measuring tape and measuring tape are usually positioned using pins on the measuring tape frame and positioning holes in the measuring tape. However, these positioning holes have a certain spacing, making it difficult to reposition the measuring tape according to specific usage conditions. Furthermore, during simulation tests, multiple measurements and records are required, and the frequent pulling and measuring processes can easily loosen the wall's fixing hooks, leading to errors in the measurement results. Summary of the Invention

[0004] In view of this, the present invention provides a full-section convergence deformation measuring device and method for tunnel simulation tests, in order to solve the problems of existing full-section convergence deformation measuring devices for tunnel simulation tests having tension on the steel ruler, which is prone to loosening and deviation when used, affecting measurement efficiency. At the same time, it is not easy to position the ruler according to the specific use situation. In addition, the frequent measurement and pulling process can easily loosen the fixed hooks on the wall, resulting in certain errors in the measurement results.

[0005] This invention provides the purpose and effectiveness of a full-section convergence deformation measurement device and method for tunnel simulation tests, specifically including: an experimental tunnel body; a convergence measuring instrument installed between the left and right side walls of the experimental tunnel body; a ruler frame installed at the left end of the convergence measuring instrument; two pressure plates installed on the ruler frame, which are symmetrically distributed; a handwheel installed on the ruler frame; a ruler belt installed on the ruler frame, which is located between the two pressure plates; a connecting ruler frame installed at the right end of the convergence measuring instrument; mounting frames installed on the left and right side walls of the experimental tunnel body, which are symmetrically distributed; and fixing components installed on the mounting frames.

[0006] Furthermore, the convergence measuring instrument is equipped with an adjustment knob, which is rotatably connected to the ruler frame. A display screen is provided on one side of the outer circumference of the convergence measuring instrument, and a limit frame is provided on the right end of the convergence measuring instrument.

[0007] Furthermore, the ruler frame is a rectangular frame structure, and the left end of the ruler frame is provided with a first movable hook. The upper and lower horizontal plates of the ruler frame are provided with through grooves, and the left and right side walls of the through grooves are provided with limiting sliding grooves. A sleeve is provided in the middle of the through groove.

[0008] Furthermore, the pressure plate is an arc-shaped plate structure, and two toothed rods are provided on the inner sides of the two pressure plates. The toothed rods of the two pressure plates are distributed in a centrally symmetrical manner. A limiting slider is provided on one side of the toothed rod, and the toothed rod is slidably inserted into the through groove of the ruler frame. The toothed rod is slidably connected to the limiting groove through the limiting slider. Two limiting slide rods are provided at the middle position on the inner sides of the two pressure plates, and tension springs are fitted on the limiting slide rods. The limiting slide rods are slidably inserted into the sleeve, and the two ends of the tension springs are respectively connected to the pressure plate and the end of the sleeve.

[0009] Furthermore, the handwheel is equipped with a winding shaft, which is rotatably connected to the ruler frame via a bearing. The winding shaft is equipped with two gears, which are located in the through slots of the ruler frame and are meshed with a gear rack.

[0010] Furthermore, the measuring tape is installed on the take-up shaft by winding, and the end of the measuring tape is provided with a second movable hook, and the measuring tape is provided with a limiting member;

[0011] The limiting component includes a connecting plate, a floating plate, a guide groove, a compression spring, and a first chamfer. The connecting plate and the floating plate are distributed in parallel, and the ruler passes between the connecting plate and the floating plate. There are four compression springs between the connecting plate and the floating plate. There are two guide grooves on one side of the connecting plate, and a first chamfer is provided on the edge of one end of the floating plate.

[0012] Furthermore, a ruler clip is provided on one side of the ruler frame. The ruler clip has an L-shaped structure, and two guide sliders are provided on one side of the vertical plate of the ruler clip. A second chamfer is provided on one side edge of the ruler frame. A limiting member is provided on the ruler clip, and the guide slider of the ruler clip is slidably connected to the guide groove of the connecting plate. The second chamfer matches the first chamfer.

[0013] Furthermore, the mounting frame is a columnar frame structure, with a fixed hook at one end and a fixed sleeve at the other end. A sliding sleeve is slidably installed inside the mounting frame, and three support brackets are rotatably installed on the outer circumference of the sliding sleeve via pins. The three support brackets are distributed in a circular array. Three connecting brackets are rotatably installed on the outer circumference of the fixed sleeve via pins, and one end of the connecting bracket is rotatably connected to the support bracket via a pin.

[0014] Furthermore, the fixing assembly includes an adjusting tube, a sliding circular plate, a limiting block, and a fixing head. The adjusting tube has a cylindrical cavity structure and a serpentine groove on its side wall. A sliding circular plate is provided inside the cavity of the adjusting tube. Two limiting blocks are provided on the outer circumference of the sliding circular plate. The sliding circular plate is slidably connected to the serpentine groove of the adjusting tube through the limiting blocks. The end of the limiting block is connected to the inner wall of the sliding sleeve. A fixing head is provided at one end of the adjusting tube. The fixing head has a conical structure and is fixedly connected to the side wall of the main body of the experimental tunnel by embedding.

[0015] This invention discloses a device and method for measuring the convergent deformation of a tunnel in a full-section simulation test, comprising the following steps:

[0016] (1) The rewinding shaft can be rotated by the handwheel to rewind and unwind the tape. At the same time, the pressure plate and the rack can slide along the limiting groove by using the gear and rack transmission, so that the two pressure plates can be brought together and separated at the same time.

[0017] (2) When measuring, the first movable hook and the second movable hook are respectively attached to the fixed hooks of the mounting brackets on the left and right sides, and the measuring tape passes through the limiting bracket and the measuring clip at the same time, so that the limiting component is set on the measuring clip;

[0018] (3) After the measuring device is connected and stabilized, push the connecting plate to the left and slide it along the guide slider. The second chamfer cooperates with the first chamfer so that the connecting plate and the floating plate can clamp the tape at any time.

[0019] (4) When conducting the simulation measurement test, fix the fixing hooks on the left and right side walls of the main body of the experimental tunnel, drill holes at the designated positions on the side walls of the main body of the experimental tunnel, and then connect and fix the fixing heads of the fixing components.

[0020] (5) Tighten the measuring tape by rotating the adjustment knob. At the same time, the fixed hooks on the left and right sides will be pulled towards the middle. With the cooperation of the sliding sleeve, the limiting block of the sliding round plate will slide along the serpentine groove of the adjustment tube, which can change the sliding friction between the fixed head and the side wall of the experimental tunnel to rotational friction. Moreover, the sliding sleeve can drive the three support legs to provide reverse support.

[0021] The beneficial effects of this invention are:

[0022] 1. This device is equipped with two pressure plates. The handwheel drives the winding shaft to rotate, which can wind up and unwind the tape. At the same time, the gear and rack transmission allows the pressure plates and rack to slide along the limiting slide groove, which can make the two pressure plates converge and separate at the same time. The rebound pull of the tension spring on the limiting slide rod ensures that the tape is more compact when wound up, effectively preventing the tape from loosening and shifting during winding and unwinding, and improving the measurement efficiency of the device.

[0023] 2. Because the measuring tape is equipped with a limiting component, which is set on the measuring clip, after the measuring device is connected and stable, the connecting plate is pushed to the left and slides along the guide slider. Through the cooperation of the second chamfer and the first chamfer, the connecting plate and the floating plate can clamp the measuring tape at any time according to the specific use. Its control structure is simple and the operation is convenient and flexible.

[0024] 3. Due to the presence of mounting brackets and fixing components, after drilling holes at designated locations on the sidewall of the main body of the experimental tunnel, the fixing heads of the fixing components are connected and fixed. By rotating the adjustment knob to tighten the measuring tape, the fixing hooks on both sides will be pulled towards the center simultaneously. In conjunction with the sliding sleeve, the limiting block of the sliding circular plate will slide along the serpentine groove of the adjustment tube, which can change the sliding friction between the fixing head and the sidewall of the main body of the experimental tunnel into rotational friction. Moreover, the sliding sleeve can drive the three support legs to provide reverse support, which can stabilize the connection of the fixing hooks and prevent the fixing hooks from loosening due to frequent measurement and pulling processes, thus ensuring the accuracy of the measurement results. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0026] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0027] In the attached diagram:

[0028] Figure 1 This is a schematic diagram of the overall axial view structure of an embodiment of the present invention.

[0029] Figure 2 This is an embodiment of the present invention. Figure 1 Enlarged structural diagram of section A in the middle.

[0030] Figure 3 This is a schematic diagram of the axial view structure of the tunnel simulation test full-section convergence deformation measurement device according to an embodiment of the present invention.

[0031] Figure 4 This is an embodiment of the tunnel simulation test full-section convergence deformation measurement device of the present invention. Figure 3 The resulting usage state structure diagram.

[0032] Figure 5 This is a schematic diagram of the frame, pressure plate, and handwheel structure of the tunnel simulation test full-section convergence deformation measuring device according to an embodiment of the present invention.

[0033] Figure 6 This is an embodiment of the tunnel simulation test full-section convergence deformation measurement device of the present invention. Figure 5 A schematic diagram of the structure in the explosive state.

[0034] Figure 7 This is a schematic diagram of the explosion state structure of part of the measuring tape and connecting tape frame of the tunnel simulation test full-section convergence deformation measuring device according to an embodiment of the present invention.

[0035] Figure 8 This is an embodiment of the tunnel simulation test full-section convergence deformation measurement device of the present invention. Figure 7 Enlarged structural diagram of section B.

[0036] Figure 9 This is a schematic diagram of the installation frame and fixing components of the tunnel simulation test full-section convergence deformation measurement device in an exploded state, according to an embodiment of the present invention.

[0037] List of reference numerals

[0038] 1. Experimental tunnel main body; 2. Convergence measuring instrument; 201. Adjustment knob; 202. Display screen; 203. Limiting frame; 3. Ruler frame; 301. First movable hook; 302. Through groove; 303. Limiting slide groove; 304. Sleeve; 4. Pressure plate; 401. Toothed rod; 402. Limiting slider; 403. Limiting slide rod; 404. Tension spring; 5. Handwheel; 501. Rewinding shaft; 502. Gear; 6. Ruler belt; 601. Second movable hook; 602. Limiting component; 6 021. Connecting plate; 6022. Floating plate; 6023. Guide groove; 6024. Compression spring; 6025. First chamfer; 7. Scale bracket; 701. Scale clip; 702. Guide slider; 703. Second chamfer; 8. Mounting bracket; 801. Fixed hook; 802. Sliding sleeve; 803. Support bracket; 804. Fixed sleeve; 805. Connecting bracket; 9. Fixed assembly; 901. Adjusting tube; 902. Sliding circular plate; 903. Limiting block; 904. Fixed head. Implementation

[0039] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0040] Example: Please refer to Figures 1 to 9 As shown:

[0041] This invention provides a device and method for measuring the convergence deformation of a tunnel in a full-section simulation test, comprising: an experimental tunnel body 1; a convergence measuring instrument 2 disposed between the left and right side walls of the experimental tunnel body 1; a ruler frame 3 disposed at the left end of the convergence measuring instrument 2; two pressure plates 4 disposed on the ruler frame 3, and the two pressure plates 4 are distributed symmetrically; a handwheel 5 disposed on the ruler frame 3; a ruler belt 6 disposed on the ruler frame 3, and the ruler belt 6 is located between the two pressure plates 4; a connecting ruler frame 7 disposed at the right end of the convergence measuring instrument 2; mounting frames 8 disposed on the left and right side walls of the experimental tunnel body 1, and the two mounting frames 8 are distributed symmetrically; a fixing component 9 disposed on the mounting frame 8.

[0042] The convergence measuring instrument 2 is equipped with an adjustment knob 201, which is rotatably connected to the ruler frame 3. A display screen 202 is provided on one side of the outer circumference of the convergence measuring instrument 2, and a limit frame 203 is provided on the right end of the convergence measuring instrument 2.

[0043] Among them, the ruler frame 3 is a rectangular frame structure, and the left end of the ruler frame 3 is provided with a first movable hook 301. The upper and lower horizontal plates of the ruler frame 3 are provided with through grooves 302, and the left and right side walls of the through grooves 302 are provided with limiting sliding grooves 303. The middle of the through grooves 302 is provided with a sleeve 304.

[0044] The pressure plate 4 has an arc-shaped plate structure, and two toothed rods 401 are provided on the inner sides of the two pressure plates 4. The toothed rods 401 are distributed in a centrally symmetrical manner. A limiting slider 402 is provided on one side of the toothed rod 401. The toothed rod 401 is slidably inserted into the through groove 302 of the ruler 3. The toothed rod 401 is slidably connected to the limiting slide groove 303 through the limiting slider 402. Two limiting slide rods 403 are provided in the middle position on the inner sides of the two pressure plates 4. A tension spring 404 is fitted on the limiting slide rod 403. The limiting slide rod 403 is slidably inserted into the sleeve 304. The two ends of the tension spring 404 are respectively connected to the ends of the pressure plate 4 and the sleeve 304.

[0045] The handwheel 5 is equipped with a winding shaft 501, which is rotatably connected to the ruler frame 3 via bearings. The winding shaft 501 is equipped with two gears 502, which are located in the through groove 302 of the ruler frame 3 and are meshed with the rack 401. The device is equipped with two pressure plates 4. The handwheel 5 drives the winding shaft 501 to rotate, which can wind up and unwind the ruler strip 6. At the same time, the gears 502 and the rack 401 drive the pressure plates 4 and the rack 401 to slide along the limiting slide groove 303, which can make the two pressure plates 4 converge and separate in the middle at the same time. The tension spring 404 mounted on the limiting slide 403 pulls back, ensuring that the ruler strip 6 is more compact when wound up, effectively preventing the ruler strip 6 from becoming loose or shifting when winding up and unwinding, and improving the measurement efficiency of the device.

[0046] The tape 6 is installed on the winding shaft 501 by winding, and the end of the tape 6 is provided with a second movable hook 601, and the tape 6 is provided with a limiting member 602.

[0047] The limiting component 602 includes a connecting plate 6021, a floating plate 6022, a guide groove 6023, a compression spring 6024, and a first chamfer 6025. The connecting plate 6021 and the floating plate 6022 are distributed in parallel, and the ruler 6 passes between the connecting plate 6021 and the floating plate 6022. Four compression springs 6024 are provided between the connecting plate 6021 and the floating plate 6022. Two guide grooves 6023 are provided on one side of the connecting plate 6021, and a first chamfer 6025 is provided on the edge of one end of the floating plate 6022.

[0048] The measuring tape frame 7 has a measuring tape holder 701 on one side. The measuring tape holder 701 has an L-shaped structure, and two guide sliders 702 are provided on one side of the vertical plate of the measuring tape holder 701. A second chamfer 703 is provided on one side edge of the measuring tape frame 7. A limiting member 602 is provided on the measuring tape holder 701, and the guide sliders 702 of the measuring tape holder 701 are slidably connected to the guide grooves 6023 of the connecting plate 6021. The second chamfer 703 matches the first chamfer 6025. During measurement, the first movable hook 301 and the second movable hook 601 are respectively hooked onto the left and right sides for installation. The measuring device is mounted on the fixed hook 801 of the frame 8, and the measuring tape 6 passes through the limiting frame 203 and the measuring clip 701 at the same time. Since the measuring tape 6 is provided with a limiting member 602, the limiting member 602 is set on the measuring clip 701. When the measuring device is connected and stable, the connecting plate 6021 is pushed to the left and slides along the guide slider 702. The second chamfer 703 cooperates with the first chamfer 6025, which can be adjusted according to the specific use. The connecting plate 6021 and the floating plate 6022 can clamp the measuring tape 6 at any time. Its control structure is simple and the operation is convenient and flexible.

[0049] The mounting frame 8 is a columnar frame structure, with a fixed hook 801 at one end and a fixed sleeve 804 at the other end. A sliding sleeve 802 is slidably installed inside the mounting frame 8. Three support brackets 803 are rotatably installed on the outer circumference of the sliding sleeve 802 via pins, and the three support brackets 803 are distributed in a circular array. Three connecting brackets 805 are rotatably installed on the outer circumference of the fixed sleeve 804 via pins, and one end of the connecting bracket 805 is rotatably connected to the support bracket 803 via pins.

[0050] The fixing component 9 includes an adjusting tube 901, a sliding circular plate 902, a limiting block 903, and a fixing head 904. The adjusting tube 901 has a cylindrical cavity structure, and its sidewalls are provided with serpentine grooves. The sliding circular plate 902 is located inside the cavity of the adjusting tube 901. Two limiting blocks 903 are provided on the outer circumference of the sliding circular plate 902, and the sliding circular plate 902 is slidably connected to the serpentine grooves of the adjusting tube 901 through the limiting blocks 903. The ends of the limiting blocks 903 are connected to the inner wall of the sliding sleeve 802. One end of the adjusting tube 901 is provided with a fixing head 904, which has a conical structure. The fixing head 904 is fixedly connected to the sidewalls of the experimental tunnel body 1 by embedding. During the simulation measurement test, the fixing hooks 80 on the left and right sidewalls of the experimental tunnel body 1 are fixed. 1. Fixing: Since there is a mounting bracket 8 and a fixing component 9, after drilling holes at designated positions on the side wall of the experimental tunnel body 1, the fixing head 904 of the fixing component 9 is connected and fixed. By rotating the adjustment knob 201 to tighten the measuring tape 6, the fixing hooks 801 on the left and right sides will be pulled towards the middle at the same time. With the cooperation of the sliding sleeve 802, the limiting block 903 of the sliding circular plate 902 will slide along the serpentine groove of the adjustment tube 901, which can change the sliding friction between the fixing head 904 and the side wall of the experimental tunnel body 1 into rotational friction. Moreover, the sliding sleeve 802 can drive the three support legs 803 to provide reverse support, so as to ensure the stability of the connection of the fixing hook 801, avoid the frequent measurement and pulling process that causes the fixing hook 801 to loosen, and ensure the accuracy of the measurement results.

[0051] The specific usage and function of this embodiment: In this invention, the handwheel 5 drives the winding shaft 501 to rotate, which can wind and unwind the tape 6. At the same time, the gear 502 and the rack 401 drive the pressure plate 4 and the rack 401 to slide along the limiting slide groove 303, which allows the two pressure plates 4 to simultaneously converge and separate towards the middle. The rebound pull of the tension spring 404 mounted on the limiting slide 403 ensures that the tape 6 is more compact when wound, effectively preventing the tape 6 from becoming loose or shifting during winding and unwinding, and improving efficiency. The measurement efficiency of the device; during measurement, the first movable hook 301 and the second movable hook 601 are respectively hooked onto the fixed hooks 801 of the left and right mounting brackets 8, and the measuring tape 6 passes through the limiting bracket 203 and the measuring clip 701 at the same time. Since the measuring tape 6 is provided with a limiting member 602, the limiting member 602 is set on the measuring clip 701. When the measuring device is stably connected, the connecting plate 6021 is pushed to the left and slides along the guide slider 702. Through the cooperation of the second chamfer 703 and the first chamfer 6025, it can... The connecting plate 6021 and floating plate 6022 can clamp the measuring tape 6 at any time according to the specific usage. Its control structure is simple and convenient to use. When conducting simulation measurement tests, the fixed hooks 801 on the left and right side walls of the experimental tunnel body 1 are fixed. Since there is a mounting bracket 8 and a fixing component 9, after drilling holes at the designated positions on the side walls of the experimental tunnel body 1, the fixing head 904 of the fixing component 9 is connected and fixed. By rotating the adjustment knob 201 to tighten the measuring tape 6, the fixed hooks 801 on the left and right sides will be pulled towards the middle at the same time. With the cooperation of the sliding sleeve 802, the limiting block 903 of the sliding circular plate 902 will slide along the serpentine groove of the adjustment tube 901. This can change the sliding friction between the fixing head 904 and the side wall of the experimental tunnel body 1 to rotational friction. Moreover, the sliding sleeve 802 can drive the three support legs 803 to provide reverse support, so as to ensure the stability of the connection of the fixed hook 801 and avoid the loosening of the fixed hook 801 due to frequent measurement and pulling processes, thus ensuring the accuracy of the measurement results.

[0052] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention, which is determined by the appended claims.

Claims

1. A full-section convergence deformation measurement device for tunnel simulation tests, characterized in that, A tunnel simulation test full-section convergence deformation measurement device includes: an experimental tunnel body (1), a convergence measuring instrument (2) between the left and right side walls of the experimental tunnel body (1); a ruler frame (3) at the left end of the convergence measuring instrument (2); two pressure plates (4) on the ruler frame (3) and the two pressure plates (4) are symmetrically distributed; a handwheel (5) on the ruler frame (3); a ruler belt (6) on the ruler frame (3) and the ruler belt (6) is located between the two pressure plates (4); a connecting ruler frame (7) at the right end of the convergence measuring instrument (2); mounting frames (8) on the left and right side walls of the experimental tunnel body (1) and the two mounting frames (8) are symmetrically distributed; and a fixing component (9) on the mounting frame (8). The ruler frame (3) is a rectangular frame structure, and the left end of the ruler frame (3) is provided with a first movable hook (301). The upper and lower horizontal plates of the ruler frame (3) are provided with through grooves (302), and the left and right side walls of the through grooves (302) are provided with limiting slide grooves (303). A sleeve (304) is provided in the middle of the through grooves (302). The pressure plate (4) is an arc-shaped plate structure, and two toothed rods (401) are provided on the inner side of the two pressure plates (4). The toothed rods (401) of the two pressure plates (4) are distributed in a centrally symmetrical manner. A limiting slider (402) is provided on one side of the toothed rod (401). The toothed rod (401) is slidably inserted into the through groove (302) of the ruler frame (3). The toothed rod (401) is slidably connected to the limiting slide groove (303) through the limiting slider (402). Two limiting slide rods (403) are provided in the middle position on the inner side of the two pressure plates (4). A tension spring (404) is fitted on the limiting slide rod (403). The limiting slide rod (403) is slidably inserted into the sleeve (304). The two ends of the tension spring (404) are connected to the ends of the pressure plate (4) and the sleeve (304) respectively. The handwheel (5) is provided with a winding shaft (501), and the winding shaft (501) is rotatably connected to the ruler frame (3) through a bearing. The winding shaft (501) is provided with two gears (502), and the gears (502) are located in the through groove (302) of the ruler frame (3), and the gears (502) are meshed with the rack (401).

2. The tunnel simulation test full-section convergence deformation measurement device as described in claim 1, characterized in that: The convergence measuring instrument (2) is equipped with an adjustment knob (201), and the adjustment knob (201) is rotatably connected to the ruler frame (3). A display screen (202) is provided on one side of the outer circumference of the convergence measuring instrument (2), and a limit frame (203) is provided on the right end of the convergence measuring instrument (2).

3. The tunnel simulation test full-section convergence deformation measurement device as described in claim 1, characterized in that: The tape (6) is installed on the winding shaft (501) by winding, and the end of the tape (6) is provided with a second movable hook (601), and the tape (6) is provided with a limiting member (602). The limiting component (602) includes a connecting plate (6021), a floating plate (6022), a guide groove (6023), a compression spring (6024), and a first chamfer (6025). The connecting plate (6021) and the floating plate (6022) are distributed in parallel, and the ruler (6) passes between the connecting plate (6021) and the floating plate (6022). Four compression springs (6024) are provided between the connecting plate (6021) and the floating plate (6022). Two guide grooves (6023) are provided on one side of the connecting plate (6021), and a first chamfer (6025) is provided on the edge of one end of the floating plate (6022).

4. The tunnel simulation test full-section convergence deformation measurement device as described in claim 3, characterized in that: The ruler frame (7) is provided with a ruler clip (701) on one side. The ruler clip (701) has an L-shaped structure and two guide sliders (702) are provided on one side of the vertical plate of the ruler clip (701). A second chamfer (703) is provided on one side edge of the ruler frame (7). A limiting member (602) is provided on the ruler clip (701). The guide slider (702) of the ruler clip (701) is slidably connected to the guide groove (6023) of the connecting plate (6021). The second chamfer (703) matches the first chamfer (6025).

5. The tunnel simulation test full-section convergence deformation measurement device as described in claim 1, characterized in that: The mounting frame (8) is a columnar frame structure, and one end of the mounting frame (8) is provided with a fixed hook (801), and the other end of the mounting frame (8) is provided with a fixed sleeve (804). A sliding sleeve (802) is slidably installed inside the mounting frame (8). Three support brackets (803) are rotatably installed on the outer circumference of the sliding sleeve (802) through a pin shaft, and the three support brackets (803) are distributed in a circular array. Three connecting brackets (805) are rotatably installed on the outer circumference of the fixed sleeve (804) through a pin shaft, and one end of the connecting bracket (805) is rotatably connected to the support bracket (803) through a pin shaft.

6. The tunnel simulation test full-section convergence deformation measurement device as described in claim 5, characterized in that: The fixing component (9) includes an adjusting tube (901), a sliding circular plate (902), a limiting block (903), and a fixing head (904). The adjusting tube (901) is a cylindrical cavity structure, and the side wall of the adjusting tube (901) is provided with a serpentine groove. The cavity of the adjusting tube (901) is provided with a sliding circular plate (902). The outer circumference of the sliding circular plate (902) is provided with two limiting blocks (903). The sliding circular plate (902) is slidably connected to the serpentine groove of the adjusting tube (901) through the limiting block (903). The end of the limiting block (903) is connected to the inner wall of the sliding sleeve (802). One end of the adjusting tube (901) is provided with a fixing head (904). The fixing head (904) is a conical structure. The fixing head (904) is fixedly connected to the side wall of the experimental tunnel body (1) by embedding.

7. The measurement method of the tunnel simulation test full-section convergence deformation measuring device as described in any one of claims 1-6, characterized in that: Includes the following steps: (1) By rotating the take-up shaft (501) through the handwheel (5), the tape (6) can be taken up and unwound. At the same time, by using the gear (502) and the rack (401) for transmission, the pressure plate (4) and the rack (401) slide along the limiting slide groove (303), which can make the two pressure plates (4) converge and separate towards the middle at the same time. (2) When measuring, the first movable hook (301) and the second movable hook (601) are respectively hooked onto the fixed hooks (801) of the mounting brackets (8) on the left and right sides, and the tape (6) passes through the limit frame (203) and the tape clip (701) at the same time, so that the limit piece (602) is set on the tape clip (701); (3) After the measuring device is connected and stabilized, push the connecting plate (6021) to the left and slide it along the guide slider (702). The second chamfer (703) cooperates with the first chamfer (6025) so that the connecting plate (6021) and the floating plate (6022) can clamp the tape (6) at any time. (4) When conducting the simulation measurement test, fix the fixing hooks (801) on the left and right side walls of the main body of the experimental tunnel (1), and after drilling holes at the designated positions on the side walls of the main body of the experimental tunnel (1), connect and fix the fixing head (904) of the fixing component (9); (5) Tighten the measuring tape (6) by rotating the adjustment knob (201). At the same time, the fixed hooks (801) on the left and right sides will be pulled towards the middle. With the cooperation of the sliding sleeve (802), the limiting block (903) of the sliding round plate (902) will slide along the serpentine groove of the adjustment tube (901). This will change the sliding friction between the fixed head (904) and the side wall of the experimental tunnel body (1) to rotational friction. Moreover, the sliding sleeve (802) will drive the three support legs (803) to provide reverse support.

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