Urban tunnel supervision grouting leakage detection device

Abstract

The application discloses a kind of city tunnel supervision grouting leakage detection devices, belong to building construction technical field.This device includes mounting plate, measurement component, for measuring the height of liquid level change after single grouting of tunnel completion, including locating cylinder, connecting rod is slidably arranged in the inner cavity of locating cylinder, the lower end of connecting rod is connected with measuring plate, and the upper end is connected with piston;Adjusting component is used to adjust the position height of locating cylinder;Among them, locating cylinder is connected with protective rope sleeve, connecting rope is slidably installed in protective rope sleeve, one end of connecting rope is inserted into locating cylinder and connected with piston, the other end is connected with numerical feedback plate for displaying the displacement amount of piston, air inlet pipe is arranged on the side surface of protective rope sleeve and is communicated with the upper inner cavity of locating cylinder, and air inlet pipe is connected with air inlet component.Through the application, the height change of liquid level generated by grouting liquid level can be quickly detected, so as to help construction personnel to intuitively judge whether there is grouting leakage phenomenon in tunnel.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of city tunnel supervision grouting leakage detection device, belong to building construction technical field. BACKGROUND

[0002] City tunnel is also called city tunnel, which is a building set in city underground or underwater to meet the needs of vehicle and pedestrian traffic, and in the process of city tunnel construction, construction personnel need to comprehensively control project quality, safety, investment, progress, environmental protection, etc. to promote the perfect completion of city tunnel. As one of the important processes of city tunnel construction, grouting usually grouts solidified slurry (such as concrete) into foundation pit in rock-soil to improve the integrity, strength and stiffness of rock-soil, so as to facilitate the formation of tunnel.

[0003] After each grouting of the tunnel, the slurry level will drop by a certain height, and the leakage during grouting caused by rock-soil cracks, formwork gaps, etc. will also cause the slurry level to drop. After the two situations overlap, the tunnel construction personnel cannot accurately determine whether there is leakage in the tunnel, which may cause waste of slurry. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a city tunnel supervision grouting leakage detection device, which solves the problem that tunnel construction personnel cannot accurately determine whether there is leakage in the tunnel in the prior art.

[0005] The technical problem to be solved by the present application is solved by the following technical solution: a city tunnel supervision grouting leakage detection device, comprising a mounting plate fixed to the ground;

[0006] A measuring assembly is used to measure the change in liquid level height after single grouting of the tunnel, comprising a positioning cylinder, a connecting rod is slidably arranged in the inner cavity of the positioning cylinder, the lower end of the connecting rod is connected with a measuring plate, and the upper end is connected with a piston, a pressure sensor is arranged in the cavity of the positioning cylinder on the upper part of the piston;

[0007] An adjusting assembly is arranged on the side of the positioning cylinder for adjusting the position height of the positioning cylinder;

[0008] The positioning cylinder is connected with a protective rope sleeve, a connecting rope is slidably installed in the protective rope sleeve, one end of the connecting rope penetrates into the positioning cylinder and is connected with the piston, the other end is connected with a numerical feedback plate for displaying the displacement amount of the piston, an air inlet pipe is arranged on the side of the protective rope sleeve and communicates with the inner cavity of the upper part of the positioning cylinder, and the air inlet pipe is connected with an air inlet assembly.

[0009] The present application is further provided: a detection plate is arranged on the mounting plate, the numerical feedback plate is slidably arranged on the detection plate, and a scale is arranged on the upper side of the detection plate.

[0010] The application is further provided with a guide rod on the upper side of the detection plate for sliding guidance of the numerical feedback plate, and a positioning spring is sleeved on the guide rod.

[0011] The application is further provided with a measuring seat on the side of the detection plate, a contact switch is installed on the measuring seat, and the triggering point of the contact switch faces the direction of the numerical feedback plate.

[0012] The application is further provided with a threaded cylinder on the measuring seat, an adjusting screw is rotatably arranged on the detection plate, and the adjusting screw is threadedly connected with the threaded cylinder.

[0013] The application is further provided with a support frame fixed on the upper side of the mounting plate, a fixed plate is arranged on the top of the support frame, an electric telescopic cylinder is installed on the fixed plate, a moving seat is installed at the telescopic end of the electric telescopic cylinder, an adjusting roller is rotatably installed in the moving seat, and a limiting roller is arranged on the support frame on the two sides of the adjusting roller.

[0014] The application is further provided with a support plate arranged on the edge of the tunnel, a counterweight is arranged on one side of the support plate, a connecting plate is arranged on the other side of the support plate, a positioning shaft is arranged at the end of the connecting plate away from the support plate, and a positioning roller is rotatably arranged on the positioning shaft.

[0015] The application is further provided with a positioning rod fixed on the side of the positioning cylinder at the bottom end, an annular plate is rotatably arranged on the outer end of the positioning shaft, a positioning frame is fixed on the side of the annular plate, the positioning rod is slidably arranged in the positioning frame, and a fastening screw for positioning the position of the positioning rod is arranged on the side of the positioning frame.

[0016] The application is further provided with a mounting seat installed on the upper side of the support plate, a rotating shaft is installed on the side of the connecting plate close to the support plate, the rotating shaft is rotatably installed in the mounting seat, a positioning seat is installed on the upper side of the support plate close to the rotating shaft, and a positioning screw for limiting the position of the rotating shaft is arranged in the positioning seat.

[0017] The application is further provided with a gas pump group installed on the side of the mounting plate, and the air inlet pipe is connected with the gas pump group at the end away from the positioning cylinder.

[0018] Compared with the prior art, the application has the following beneficial effects:

[0019] 1. The city tunnel supervision grouting leakage detection device of the present application, the change of the slurry liquid level during tunnel grouting is fed back to the numerical feedback plate by the measuring assembly, the construction personnel observes the change of the slurry liquid level height through the sliding position of the numerical feedback plate on the detection plate, judges whether there is leakage at the grouting position, adopts the way of batch grouting to reduce the space range of the leakage place, is convenient for locking the leakage position, and the batch grouting can reduce the slurry leakage amount, avoids waste caused by a large amount of slurry leakage from the rock-soil gap or the template interval during overall grouting; during batch grouting, after single grouting is completed, the height of the positioning cylinder can be adjusted when grouting again, so as to adapt to different slurry liquid levels.

[0020] 2. The city tunnel supervision grouting leakage detection device of the present application, after single grouting is completed, the measuring assembly is placed in the grouting space, the height of the positioning cylinder is adjusted through the adjusting assembly, the air inlet assembly is controlled to work to inject air into the positioning cylinder through the air inlet pipe to increase the pressure, the upper part of the inner cavity of the positioning cylinder exerts force on the piston, but the piston cannot move due to the support of the slurry on the measuring plate, when the slurry liquid level drops, the slurry no longer supports the measuring plate, the piston moves downward in the positioning cylinder until the measuring plate contacts the slurry liquid level again, and the connecting rope in the protective rope sleeve moves during the movement of the piston, the connecting rope pulls the numerical feedback plate to slide, the construction personnel judges the liquid level drop height by observing the sliding distance of the numerical feedback plate on the detection plate, after excluding the normal infiltration amount of slurry into the rock-soil, if the liquid level drop is not within the predicted range, it can be determined that there is leakage, the construction personnel checks the leakage position in time and repairs it, avoiding waste caused by continuous slurry leakage.

[0021] 3. The city tunnel supervision grouting leakage detection device of the present application, the alarm device is arranged, when the liquid level drops too much, the sliding amount of the numerical feedback plate increases sharply, the numerical feedback plate contacts the contact switch, and the alarm is triggered. When the detection device is used, the tunnel construction personnel can adjust the position of the measuring seat by driving the threaded cylinder to move through the adjusting screw, so as to set the alarm value, when the slurry liquid level drops and the connecting rope moves the numerical feedback plate to the position of the contact switch, the contact switch is closed to control the external alarm device to send alarm information, so that personnel can go to the tunnel grouting place in the first time to find the slurry leakage position and seal it.

[0022] 4. The city tunnel supervision grouting leakage detection device of the present application, the protective rope sleeve and the air inlet pipe are arranged on the limiting rollers on both sides of the support frame, during batch grouting, as the grouting height continuously rises, the electric telescopic cylinder is controlled to work, the moving seat is driven to move by the electric telescopic cylinder, the adjusting roller installed in the moving seat presses the protective rope sleeve and the air inlet pipe, the height of the measuring assembly is adjusted, so that the present measuring assembly is suitable for leakage detection of different grouting heights.

[0023] 5. In the example of the grout leakage detection device for urban tunnel supervision of the present invention, when adjusting the height of the positioning cylinder, the positioning rod slides in the positioning frame to limit and guide the up and down movement of the positioning cylinder. At the same time, the positioning rod ensures that the positioning cylinder is always perpendicular to the grout surface, which facilitates the use of the measuring plate. After adjusting the height of the positioning cylinder, the positioning rod is fixed in the positioning frame by the fastening screw to position the positioning cylinder, which facilitates the measuring plate to move with the change of grout surface height. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention in use;

[0025] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0026] Figure 3 This is a schematic diagram of the detection component in this invention;

[0027] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point D;

[0028] Figure 5 This is a three-dimensional structural diagram of the positioning cylinder of the present invention when its height is adjusted;

[0029] Figure 6 This is a three-dimensional structural diagram of the adjustment component of the present invention;

[0030] Figure 7 This is a three-dimensional structural diagram of the positioning component of the present invention;

[0031] Figure 8 for Figure 7 Enlarged structural diagram at point B;

[0032] Figure 9 for Figure 7 A magnified structural diagram at point C.

[0033] In the diagram: 1. Mounting plate; 2. Positioning cylinder; 3. Measuring plate; 4. Connecting rod; 5. Piston; 6. Protective rope sleeve; 7. Connecting rope; 8. Positioning rod; 9. Support plate; 10. Counterweight; 11. Mounting seat; 12. Connecting plate; 13. Rotating shaft; 14. Positioning seat; 15. Positioning screw; 16. Positioning roller; 17. Positioning shaft; 18. Annular plate; 19. Positioning frame; 20. Fastening screw; 21. Air inlet pipe; 22. Support frame; 23. Limiting roller; 24. Fixing plate; 25. Electric telescopic cylinder; 26. Moving seat; 27. Adjusting roller; 28. Detection plate; 29. ​​Fixing seat; 30. Air pump set; 31. Numerical feedback plate; 32. Guide rod; 33. Positioning spring; 34. Measuring seat; 35. Contact switch; 36. Adjusting screw; 37. Threaded cylinder. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in combination with specific drawings.

[0035] Please refer to Figure 1 The present application provides a technical solution: a city tunnel supervision grouting leakage detection device, comprising a mounting plate 1 and a measuring assembly, the measuring assembly is located in the tunnel grouting foundation pit and is located at the liquid level of the slurry, the mounting plate 1 is provided with a detection assembly connected with the measuring assembly and an adjusting assembly for adjusting the position of the measuring assembly, the change of the slurry liquid level during tunnel grouting is fed back to the detection assembly and displayed, the construction personnel observes the change of the slurry liquid level through the data information fed back by the detection assembly, judges whether there is leakage at the grouting position, adopts the way of batch grouting to reduce the space range of the leakage position, facilitates locking the leakage position, and the batch grouting can reduce the leakage amount of the slurry, avoids waste caused by leakage of a large amount of slurry from the rock-soil gap or the interval of the formwork during overall grouting; during the batch grouting process, the position of the measuring assembly can be adjusted through the adjusting assembly after single grouting is completed and grouting is performed again, so as to meet the liquid level monitoring requirement at different heights.

[0036] Specifically, as shown in Figure 2 The measuring assembly comprises a positioning cylinder 2, a measuring plate 3 is arranged below the positioning cylinder 2, the upper part of the side of the measuring plate 3 is arranged obliquely, so that the slurry falling on the upper side of the measuring plate 3 can be easily separated, a connecting rod 4 is fixed on the upper side of the measuring plate 3, a piston 5 located in the positioning cylinder 2 is fixed at the top end of the connecting rod 4, a positioning assembly for positioning the positioning cylinder 2 is arranged on the side of the positioning cylinder 2, a protection rope sleeve 6 is fixed on the middle part of the side of the positioning cylinder 2, a connecting rope 7 is slidably installed in the protection rope sleeve 6, the end of the connecting rope 7 penetrates through the positioning cylinder 2 and is fixedly connected with the piston 5, an air inlet pipe 21 communicating with the upper part of the inner cavity of the positioning cylinder 2 is arranged on the side of the protection rope sleeve 6, and an air inlet assembly communicating with the inner cavity of the air inlet pipe 21 is arranged on the side of the mounting plate 1. The air inlet assembly comprises an air pump group 30 arranged on the side of the mounting plate 1, one end of the air inlet pipe 21 away from the positioning cylinder 2 is arranged at the air outlet of the air pump group 30 and communicates with the air outlet of the air pump group 30, the air pump group 30 is controlled to work, air is sucked from the outside by the air pump group 30 and is transported into the positioning cylinder 2 through the air inlet pipe 21 to press the piston 5, so that the measuring plate 3 can move with the change of the slurry liquid level, and the height of the slurry liquid level can be detected through the measuring assembly.

[0037] After the single grouting is completed, the measuring assembly is placed in the grouting space, the measuring plate 3 is located at the slurry liquid level to support and limit the measuring assembly, then the position of the positioning cylinder 2 is positioned by the positioning assembly, the air inlet assembly is controlled to work to inject air into the positioning cylinder 2 through the air inlet pipe 21 to increase the pressure in the inner cavity of the positioning cylinder 2, and the piston 5 is subjected to the action force after the pressure in the upper part of the inner cavity of the positioning cylinder 2 is increased, but the piston 5 cannot move due to the support of the slurry on the measuring plate 3, when the slurry liquid level drops, the slurry no longer supports the measuring plate 3, the piston 5 moves downward in the positioning cylinder 2 until the measuring plate 3 contacts the slurry liquid level again, and the connecting rope 7 in the protective rope sleeve 6 is moved during the movement of the piston 5, the connecting rope 7 applies an action force to the detection assembly, so that the detection assembly displays the slurry liquid level drop information to the outside, and the normal infiltration amount of the slurry into the rock soil is excluded, if the liquid level drops out of the prediction range, it can be determined that there is a grout leakage phenomenon, through batch grouting, the space where the grout leakage position is located is narrowed, and personnel can timely repair the grout leakage position to avoid waste caused by continuous leakage of the slurry.

[0038] Further, a pressure sensor is installed in the positioning cylinder 2, the pressure sensor can monitor the air pressure change in the positioning cylinder 2 in real time, so that the device can monitor the grout leakage in the whole tunnel grouting process through the air pressure change in the positioning cylinder 2, and reduce the grout leakage risk.

[0039] Specifically, the pressure sensor is connected with an external data analysis system through a wireless signal, which can be Bluetooth or a local area network. During the tunnel grouting process, the measuring plate 3 abuts against the upper surface of the whole slurry, as the slurry is continuously grouted in the tunnel, the detection plate 28 is also pushed upward, thereby pushing the piston 5 to move upward, the piston 5 extrudes the air in the positioning cylinder 2 during the movement, so that the air pressure in the positioning cylinder 2 changes, at this time, the pressure sensor transmits the monitored pressure change data to the data analysis system in real time, the data analysis system processes the received data to generate a real-time pressure change curve, and judges the grouting state of the whole tunnel in combination with the grouting amount in the tunnel. If there is no grout leakage phenomenon, the pressure curve change graph should remain in a continuously rising state, if there is a grout leakage phenomenon, the curve change at the grout leakage point will appear a situation that the rising amplitude is reduced or even the regional flatness. By observing the pressure curve fluctuation point, the construction personnel can quickly judge the specific point of the grout leakage, so as to quickly respond and check and maintain the tunnel, and improve the grouting efficiency.

[0040] As Figure 3 and Figure 4As shown, the detection plate 28 is mounted on the upper side of the mounting plate 1, and the fixed seat 29 for positioning the protective rope sleeve 6 and the air inlet pipe 21 is fixed on the side of the detection plate 28. The position of the protective rope sleeve 6 and the air inlet pipe 21 is positioned by the fixed seat 29, which avoids the movement of the protective rope sleeve 6 during the use of the detection device, so as to avoid errors in the detection results. The detection assembly includes a numerical feedback plate 31 mounted on the end of the connecting rope 7, and the numerical feedback plate 31 is slidably connected with the detection plate 28. The elastic positioning assembly for positioning the position of the numerical feedback plate 31 is arranged on the side of the detection plate 28. The detection plate 28 is provided with a scale on the upper side. When the piston 5 drives the connecting rope 7 to move, the connecting rope 7 drives the numerical feedback plate 31 to slide on the upper side of the detection plate 28. The scale is arranged to facilitate the calculation of the sliding distance of the detection plate 28, so as to judge the amount of the slurry liquid level moving down, and facilitate the tunnel construction personnel to detect whether there is a slurry leakage phenomenon in the grouting process.

[0041] The detection plate 28 is provided with a guide rod 32 on the upper side, and the numerical feedback plate 31 is slidably connected with the guide rod 32. The elastic positioning assembly includes a positioning spring 33 sleeved on the guide rod 32, and the positioning spring 33 is located on the side of the numerical feedback plate 31 close to the connecting rope 7. When the measuring assembly is used, the positioning spring 33 sleeved on the guide rod 32 positions the numerical feedback plate 31, so that the numerical feedback plate 31 positions the piston 5 in the positioning cylinder 2 through the connecting rope 7, and reserves space for the movement of the piston 5, which facilitates the detection of the change of the grouting liquid level by the measuring plate 3. When the grouting liquid level moves down and the measuring plate 3 drives the connecting rope 7 to move, the numerical feedback plate 31 compresses the positioning spring 33, so that the numerical feedback plate 31 effectively slides on the side of the detection plate 28, which facilitates the use of the detection assembly.

[0042] The measuring seat 34 is arranged on the side of the detection plate 28, and the contact switch 35 is mounted on the side of the measuring seat 34. The detection end of the contact switch 35 is arranged corresponding to the position of the numerical feedback plate 31. The measuring seat 34 is slidably mounted on the detection plate 28. The threaded cylinder 37 is mounted on the measuring seat 34. The adjusting screw 36 is rotatably arranged on the side of the detection plate 28. The adjusting screw 36 is threadedly connected with the threaded cylinder 37. When the detection device is used, the tunnel construction personnel can drive the threaded cylinder 37 to move by the adjusting screw 36 to adjust the position of the measuring seat 34, so as to set the alarm value. When the slurry liquid level drops and the connecting rope 7 drives the numerical feedback plate 31 to move to the position of the contact switch 35, the contact switch 35 is closed to control the external alarm device to issue an alarm information, which facilitates the personnel to go to the tunnel grouting place to find the slurry leakage position and seal the position in the first time.

[0043] As shown in the drawings, Figure 5 and Figure 6As shown, the adjusting assembly is located between the measuring assembly and the detecting assembly, the support frame 22 is fixed on the upper side of the mounting plate 1, the fixed plate 24 is fixed on the top of the support frame 22, the electric telescopic cylinder 25 is installed on the side of the fixed plate 24, the electric telescopic cylinder 25 includes but is not limited to a servo electric cylinder or an electric hydraulic cylinder, the movable seat 26 is installed at the telescopic end of the electric telescopic cylinder 25, the adjusting roller 27 is rotatably installed in the movable seat 26, and the adjusting roller 27 is arranged close to the mounting plate 1, the limiting rollers 23 are arranged on both sides of the adjusting roller 27, the limiting rollers 23 are rotatably installed on the upper side of the support frame 22, and the protective rope sleeve 6 and the air inlet pipe 21 are arranged on the limiting rollers 23 on both sides of the support frame 22; when batch grouting, as the grouting height is continuously increased, the electric telescopic cylinder 25 is controlled to work, the movable seat 26 is driven to move by the electric telescopic cylinder 25, the adjusting roller 27 installed in the movable seat 26 presses down the protective rope sleeve 6 and the air inlet pipe 21, and the height of the measuring assembly is adjusted, so that the measuring assembly is suitable for grout leakage detection of different grouting heights.

[0044] As shown in the figure, Figures 7 to 9 The support plate 9 is arranged at the grouting opening, the position of the positioning roller 16 is positioned by the connecting plate 12 arranged on the support plate 9, the protective rope sleeve 6 and the air inlet pipe 21 are supported and limited by the positioning roller 16, the measuring assembly is used in a vertical state, the counterweight block 10 is arranged at the position of the upper side of the support plate 9 away from the connecting plate 12, the counterweight block 10 includes but is not limited to a stone block, a soil block or a water tank, the support plate 9 is positioned by the counterweight block 10, and the support plate 9 is prevented from falling into the grouting space from the grouting opening under stress.

[0045] The mounting seat 11 is installed on the upper side of the support plate 9, the rotating shaft 13 is installed on the side of the connecting plate 12 close to the support plate 9 and rotatably installed in the mounting seat 11, the mounting seat 11 and the rotating shaft 13 are arranged to facilitate the rotational adjustment of the angle of the connecting plate 12, the position of the measuring assembly can be adjusted and used according to the size of the grouting opening, the positioning seat 14 is installed on the position of the upper side of the support plate 9 close to the rotating shaft 13, the positioning screw 15 for limiting the position of the rotating shaft 13 is arranged in the positioning seat 14, after the angle adjustment of the connecting plate 12, the rotating shaft 13 is positioned by the positioning screw 15 installed on the positioning seat 14, so that the angle of the connecting plate 12 is fixed, and the position of the measuring assembly is limited by the positioning roller 16 arranged at the end of the connecting plate 12.

[0046] The positioning assembly comprises a positioning rod 8 fixed at the bottom end of the side of the positioning cylinder 2, an annular plate 18 rotatably arranged outside the positioning shaft 17, a positioning frame 19 fixed at the side of the annular plate 18, the positioning frame 19 is positionally limited by the annular plate 18, the annular plate 18 facilitates the adjustment of the angle of the positioning frame 19, and the influence of the angle adjustment of the connecting plate 12 on the positioning frame 19 is reduced, the positioning rod 8 is slidably arranged in the positioning frame 19, and the side of the positioning frame 19 is provided with a fastening screw 20 for positionally limiting the positioning rod 8, when the height position of the positioning cylinder 2 is adjusted, the positioning rod 8 slides in the positioning frame 19, and the up-and-down movement of the positioning cylinder 2 is limited and guided, and the arrangement of the positioning rod 8 ensures that the positioning cylinder 2 is always perpendicular to the slurry liquid surface, facilitating the use of the measuring plate 3, after the height position of the positioning cylinder 2 is adjusted, the positioning rod 8 is fixed in the positioning frame 19 by the fastening screw 20 to positionally limit the positioning cylinder 2, and the measuring plate 3 can move along with the change of the height of the slurry liquid surface.

[0047] The electric telescopic cylinder 25, the air pump group 30 and the like used in the present application are common electronic elements in the prior art, and the working mode and circuit structure thereof are known technologies, and the electronic elements are controlled to work by setting a switch group or a PLC controller, which is a common technical solution for technicians and will not be described herein.

[0048] The city tunnel supervision grouting slurry leakage detection device can judge whether there is slurry leakage in the grouting space after single construction by measuring the change of the liquid level height, and can facilitate construction personnel to judge and lock the slurry leakage position, timely seal and treat the slurry leakage position, effectively avoid waste caused by slurry leakage, and ensure effective construction and construction of the tunnel.

[0049] Working principle:

[0050] The device relates to two working conditions, and in the process of grouting in the tunnel, the measuring plate 3 is abutted against the grouting surface of the whole tunnel, the height of the grouting surface continuously rises due to the continuous addition of slurry in the tunnel, the piston 5 in the positioning cylinder 2 moves upward during the rising process, so that the air in the positioning cylinder 2 is extruded, the air pressure in the positioning cylinder 2 increases, the change of the air pressure in the positioning cylinder 2 is monitored in real time by the pressure sensor, if the change of the air pressure is positively correlated with the grouting speed, it indicates that there is no slurry leakage in the whole grouting process. Conversely, if the air pressure change curve fluctuates, there may be slurry leakage at the fluctuation point, at which time the grouting needs to be stopped and the construction personnel needs to be informed to check the tunnel rock wall to eliminate the slurry leakage risk.

[0051] After the tunnel grouting is completed, the air pressure in the positioning cylinder 2 is compressed to a high pressure state, at this time the tunnel is no longer grouted, the external construction personnel uses the concrete vibrating rod to compact the slurry in the tunnel, so that the surface of the slurry in the tunnel gradually decreases, the measuring plate 3 is lowered synchronously under the action of the air pressure of the positioning cylinder 2 and its own gravity, in this process, the position indicated by the numerical feedback plate 31 on the measuring plate 3 is observed in real time, and the air pressure change curve generated by combining the data detected by the pressure sensor, at this time the pressure change curve shows a downward trend. By combining the data of the two, it can be judged again whether there is a slurry leakage phenomenon in the entire grouting area. If the numerical feedback plate 31 moves too far along the measuring plate 3, or the pressure change curve decreases too high, it indicates that there is a slurry leakage phenomenon in the area.

[0052] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and various changes and improvements can be made without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A city tunnel supervision grouting leakage detection device, characterized in that, The utility model relates to a tunnel liquid level measuring device, including: Mounting plate (1) is fixed on the ground, Measuring assembly is used for measuring the liquid level change height after single grouting of tunnel completion, including locating cylinder (2), the inner chamber of locating cylinder (2) is slidably provided with connecting rod (4), the lower end of connecting rod (4) is connected with measuring plate (3), the upper end is connected with piston (5), the cavity of locating cylinder (2) in the upper part of piston (5) is provided with pressure sensor, Positioning assembly is arranged on the side of locating cylinder (2) and is used for fixing the position height of locating cylinder (2), Wherein, the locating cylinder (2) is connected with the protective rope sleeve (6), the connecting rope (7) is slidably installed in the protective rope sleeve (6), one end of the connecting rope (7) penetrates into the locating cylinder (2) and is connected with the piston (5), the other end is connected with the numerical feedback plate (31) for showing the displacement of piston (5), the side of protective rope sleeve (6) is provided with the air inlet pipe (21) that is communicated with the inner chamber of the upper part of locating cylinder (2), and the air inlet pipe (21) is connected with air inlet assembly.

2. The urban tunnel supervision grouting leakage detection device according to claim 1, characterized in that: The mounting plate (1) is provided with a detection plate (28), and the numerical feedback plate (31) is slidably arranged on the detection plate (28). A scale is arranged on the upper side of the detection plate (28).

3. The urban tunnel supervision grouting leakage detection device according to claim 2, characterized in that: The upper side of the detection plate (28) is provided with a guide rod (32) for sliding guiding of the numerical feedback plate (31), and the guide rod (32) is sleeved with a positioning spring (33).

4. The urban tunnel supervision grouting leakage detection device according to claim 2, characterized in that: The side of the detection plate (28) is provided with a measuring seat (34), the measuring seat (34) is installed with a contact switch (35), and the trigger point of the contact switch (35) faces the direction of the numerical feedback plate (31).

5. The urban tunnel supervision grouting leakage detection device according to claim 4, characterized in that: The measuring seat (34) is slidably installed on the detection plate (28), and the measuring seat (34) is provided with a threaded cylinder (37). An adjusting screw rod (36) is rotatably arranged on the detection plate (28), and the adjusting screw rod (36) is threadedly connected with the threaded cylinder (37).

6. The urban tunnel supervision grouting leakage detection device according to claim 1, characterized in that: The upper side of the mounting plate (1) is fixed with a support frame (22), the top of the support frame (22) is provided with a fixed plate (24), the fixed plate (24) is installed with an electric telescopic cylinder (25), the telescopic end of the electric telescopic cylinder (25) is installed with a moving seat (26), the moving seat (26) is rotatably installed with an adjusting roller (27), and the support frame (22) on both sides of the adjusting roller (27) is provided with a limiting roller (23).

7. The urban tunnel supervision grouting leakage detection device according to claim 1, characterized in that: A support plate (9) is arranged on the edge of the pouring tunnel, one side of the support plate (9) is provided with a counterweight (10), the other side is provided with a connecting plate (12), and one end of the connecting plate (12) away from the support plate (9) is provided with a positioning shaft (17), and the positioning shaft (17) is rotatably provided with a positioning roller (16).

8. The urban tunnel supervision grouting leakage detection device according to claim 7, characterized in that: The adjusting assembly includes a positioning rod (8) fixed at the bottom of the locating cylinder (2), the outer end of the positioning shaft (17) is rotatably provided with an annular plate (18), the side of the annular plate (18) is fixed with a positioning frame (19), the positioning rod (8) is slidably arranged in the positioning frame (19), and the side of the positioning frame (19) is provided with a fastening screw (20) for positioning the position of the positioning rod (8).

9. The urban tunnel supervision grouting leakage detection device according to claim 7, characterized in that: The support plate (9) is provided with a mounting seat (11) on the upper side, the connecting plate (12) is provided with a rotating shaft (13) on the side close to the support plate (9), the rotating shaft (13) is rotatably arranged in the mounting seat (11), and the support plate (9) is provided with a positioning seat (14) on the upper side close to the rotating shaft (13), and the positioning seat (14) is provided with a positioning screw (15) for limiting the position of the rotating shaft (13).

10. The urban tunnel supervision grouting leakage detection device according to claim 1, characterized in that: The air inlet assembly comprises an air pump group (30) arranged on the side of the mounting plate (1), and one end of the air inlet pipe (21) away from the positioning cylinder (2) is connected with the air pump group (30).

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