Core wall deformation monitoring device

Abstract

The utility model provides a core wall deformation monitoring device. The core wall deformation monitoring device comprises a measuring module and an elastic cavity module, the measuring module is fixed on the outer wall of the core wall and is used for acquiring deformation parameters of the core wall; the elastic cavity module covers the measuring module, a cavity of the elastic cavity module is filled with a medium, and the medium is used for extruding the elastic cavity module and applying stress to the measuring module. According to the core wall deformation detection device, a certain medium is filled into the elastic cavity module, so that the elastic cavity module is in an expansion state, the measurement module is further extruded, the force of a backfill dam body for extruding the core wall main body is simulated, and a core wall deformation detection result is more accurate.

Description

Technical Field

[0001] The utility model relates to a monitoring device, in particular to a core wall deformation monitoring device. Background Art

[0002] In water conservancy projects, the core wall, the core of a dam, is typically backfilled with soil on both sides to support the core wall and transfer loads from the reservoir, river, or foundation. To monitor the stress state of the core wall in complex engineering environments and ensure the overall stability of the dam, existing monitoring technology generally uses strain gauges installed between the core wall's outer wall and the backfill soil.

[0003] However, because the strain gauges are installed on the outer wall of the core wall and protected by a protective casing to prevent damage, there is no direct mechanical contact between the core wall and the backfill soil. This indirect contact makes it difficult to simulate the true stress state of the core wall in a real-world engineering environment, especially when subjected to the combined effects of backfill soil compression, water pressure, and other factors. This leads to inaccurate measurements of the core wall's shape variables, compromising the reliability of dam safety monitoring. Summary of the Invention

[0004] In order to solve the above problems, the utility model proposes a core wall deformation monitoring device.

[0005] The utility model proposes a core wall deformation monitoring device, comprising a measurement module and an elastic cavity module;

[0006] The measuring module is fixed on the outer wall of the core wall and is used to obtain the deformation parameters of the core wall;

[0007] The elastic cavity module is covered on the measuring module, and the interior of the cavity of the elastic cavity module is filled with a medium, and the medium is used to squeeze the elastic cavity module and apply stress to the measuring module.

[0008] Preferably, an outer surface of the elastic cavity module is provided with an opening, and the opening is used for injecting a medium.

[0009] The measurement module includes a monitoring unit and a supporting unit;

[0010] The monitoring unit is arranged on the outer wall of the core wall and is used to obtain deformation parameters of the core wall;

[0011] The support units are arranged at both ends of the monitoring unit and are fixedly connected to the outer wall of the core wall to prevent the monitoring unit from shifting.

[0012] Preferably, the material of the support unit is the same as that of the core wall.

[0013] The elastic cavity module includes a cavity unit and a connection unit;

[0014] The cavity unit is covered on the measuring module and is used to accommodate the measuring module, and the interior of the cavity unit is filled with a medium;

[0015] The connection unit surrounds the periphery of the cavity unit and is used to connect the elastic cavity module with the outer wall of the core wall.

[0016] Preferably, the elastic cavity module further includes a sealing unit;

[0017] The sealing unit is provided between the connecting unit and the outer wall of the core wall, and is used for sealing the connection between the connecting unit and the outer wall of the core wall.

[0018] Preferably, the monitoring unit includes: a strain monitoring subunit and a temperature monitoring subunit;

[0019] The strain monitoring subunit is arranged on the outer wall of the core wall, and both ends of the strain monitoring subunit are connected to the supporting unit;

[0020] The temperature monitoring subunit is arranged on the outer wall of the core wall.

[0021] Preferably, at least one end of the strain monitoring subunit is rotatably connected to the supporting unit at the corresponding end.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The utility model adds a certain medium into the elastic cavity module, so that the elastic cavity module is in an expanded state, and then squeezes the measurement module to simulate the force of the backfill dam body squeezing the core wall body, making the core wall deformation detection result more accurate;

[0024] (2) The present invention sets the support unit and the core wall to be made of the same material. When the core wall body deforms due to thermal expansion and contraction, the support unit will also lengthen or shorten synchronously, making the deformation monitoring data of the measurement module connected to the support unit more accurate;

[0025] (3) The deformation behavior of the core wall is not only affected by mechanical factors (such as load and stress), but also by environmental factors (especially temperature). By connecting to the temperature monitor at the same time, the utility model sets up a strain gauge and a temperature monitor at the same time, and collects and analyzes data through a unified monitoring terminal, which significantly improves the comprehensiveness and accuracy of the core wall deformation monitoring.

[0026] (4) In the present invention, the strain monitoring subunit can flexibly adapt to deformation through the rotation connection on one side, thereby preventing damage to the structure during long-term use, thereby extending the service life of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a side view of the utility model;

[0028] Figure 2 This is a schematic diagram of the elastic cavity module structure of the present utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the connection between the measurement module and the core wall of the utility model;

[0030] Figure 4 This is a partial exploded view of the measurement module of the utility model.

[0031] In the figure: 1 is the core wall body; 101 is the backfill dam body; 2 is the elastic cavity module; 201 is the connection unit; 202 is the cavity unit; 203 is the sealing unit; 204 is the fixing foot; 205 is the one-way valve; 206 is the filling head; 207 is the connecting cable; 3 is the strain gauge; 301 is the connecting head; 302 is the universal connecting seat; 303 is the threaded connection hole; 4 is the supporting unit; 401 is the threaded connection rod; 5 is the plug-in anchor plate; 501 is the connecting through hole; 6 is the fixing nut; 7 is the temperature monitor. DETAILED DESCRIPTION

[0032] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present invention with unnecessary detail.

[0033] like Figure 1 As shown, the present invention proposes a core wall deformation monitoring device, comprising a measurement module and an elastic cavity module 2;

[0034] The measurement module is fixed on the outer wall of the core wall 1 and is used to obtain the deformation parameters of the core wall 1. The upstream and downstream sides of the core wall 1 are both provided with backfill dam bodies 101.

[0035] The measurement module includes a monitoring unit and a support unit 4;

[0036] The monitoring unit is arranged on the outer wall of the core wall 1 and is used to obtain deformation parameters of the core wall 1. The deformation parameters of the present invention include temperature and strain, both of which can be directly measured by existing instruments.

[0037] Preferably, the monitoring unit includes: a strain monitoring subunit and a temperature monitoring subunit;

[0038] The strain monitoring subunit is arranged on the outer wall of the core wall 1 , and both ends of the strain monitoring subunit are connected to the support unit 4 . Preferably, at least one end of the strain monitoring subunit is rotatably connected to the support unit 4 at the corresponding end.

[0039] In the utility model, the strain monitoring subunit can flexibly adapt to deformation through the rotation connection on one side, thereby preventing damage to the structure during long-term use, thereby extending the service life of the structure.

[0040] The strain monitoring subunit is any one of a strain displacement meter 3, a traction meter, a pressure sensor, a displacement sensor, a steel bar meter, a steel plate meter, an earth pressure meter, an anchor stress meter and an anchor dynamometer.

[0041] The temperature monitoring subunit is arranged on the outer wall of the core wall 1 , and the temperature detection subunit is a temperature monitor 7 or a temperature sensor.

[0042] In this embodiment, the strain gauge 3 is of model JH-722, and the temperature sensor is of model PT100 or PT1000.

[0043] Furthermore, in one embodiment, the strain displacement meter 3 is connected to the outside of the core wall 1 through a pre-buried cable, one end of the cable is connected to the strain displacement meter 3, and the other end passes through the dam body or the elastic cavity module 2 in turn and is connected to an external monitoring terminal so as to accurately know the monitoring results of the strain displacement meter 3 from outside the dam body.

[0044] The deformation behavior of the core wall is influenced not only by mechanical factors (such as load and stress) but also by significant environmental factors (especially temperature). In this utility model, the data output terminals of the strain gauge 3 and temperature monitor 7 are both connected to an external monitoring terminal via wires. This terminal aggregates and analyzes data, significantly improving the comprehensiveness and accuracy of core wall deformation monitoring.

[0045] The support units 4 are provided at both ends of the monitoring unit and are fixedly connected to the outer wall of the core wall 1 to prevent the monitoring unit from shifting.

[0046] Preferably, the material of the support unit 4 is the same as that of the core wall 1. Preferably, the support unit 4 is a prefabricated tubular object.

[0047] The utility model sets the support unit and the core wall to the same material. When the core wall body deforms due to thermal expansion and contraction, the support unit will also lengthen or shorten synchronously, making the deformation monitoring data of the measurement module connected to the support unit more accurate.

[0048] The elastic cavity module 2 is covered on the measuring module, and the interior of the cavity of the elastic cavity module 2 is filled with a medium, and the medium is used to squeeze the elastic cavity module 2 and apply stress to the measuring module.

[0049] Preferably, an outer surface of the elastic cavity module 2 is provided with an opening for injecting a medium.

[0050] The elastic cavity module 2 includes a cavity unit 202 and a connecting unit 201;

[0051] The cavity unit 202 is covered on the measuring module and is used to accommodate the measuring module. The interior of the cavity unit 202 is filled with a medium. In the present invention, the material of the cavity unit 202 can be any one of rubber, resin, and polymer materials. The medium can be a fluid medium such as nitrogen, silicone oil, or a material that can be deformed by external pressure, such as rubber products.

[0052] The connection unit 201 surrounds the periphery of the cavity unit 202 and is used to connect the elastic cavity module 2 with the outer wall of the core wall 1 .

[0053] Preferably, the elastic cavity module 2 further includes a sealing unit 203;

[0054] The sealing unit 203 is provided between the connecting unit 201 and the outer wall of the core wall 1 , and is used to seal the connection between the connecting unit 201 and the outer wall of the core wall 1 .

[0055] The utility model injects a certain medium into the elastic cavity module to expand the elastic cavity module, thereby squeezing the measurement module to simulate the force of the backfill dam body squeezing the core wall body, making the core wall deformation detection result more accurate.

[0056] The following is an embodiment of the present invention:

[0057] like Figure 1 As shown, elastic cavity modules 2 are fixed to the outer walls on both sides of the core wall 1, and the elastic cavity module 2 covers the strain displacement gauge 3 and the support unit 4. In this embodiment, the support unit 4 includes two prefabricated pipes respectively arranged at both ends of the strain displacement gauge 2.

[0058] like Figure 3 、 Figure 4 As shown, both ends of the strain gauge 3 are connected to the supporting units 4 at the corresponding ends through a universal connecting seat 302 and a connecting head 301 , and the supporting units 4 at both ends of the strain gauge 3 are fixed to the core wall 1 through plug-in anchor plates 5 .

[0059] like Figure 2As shown, the elastic cavity module 2 includes a connection unit 201 and a cavity unit 202. The cavity unit 202 is fixed to the connection unit 201. A preset number of fixing legs 204 are fixed around the connection unit 201. A sealing unit 203 is fixed to the connection unit 201. The cavity unit 202 has an opening, and a one-way valve 205 is fixed to the opening. A filling head 206 is fixed to the upper end of the one-way valve 205. The filling head 206 is connected to the interior of the one-way valve 205, and the one-way valve 205 is connected to the interior of the cavity unit 202. A connecting cable 207 is fixed to the cavity unit 202. The temperature monitor 7 is fixed to the strain gauge 3. The connecting cable 207 is electrically connected to the strain gauge 3 and the temperature monitor 7 through the cable.

[0060] The gap between the connecting unit 201 and the outer wall of the core wall 1 can be sealed by the sealing unit 203 , thereby further ensuring the sealing inside the elastic cavity module 2 .

[0061] In this embodiment, the filling head 206 is used to fill the fluid medium into the cavity unit. The filling head 206 is connected to the one-way valve 205, and the fluid medium is then filled into the elastic cavity module 2 through the one-way valve 205. At the same time, the one-way valve 205 can prevent the fluid medium from flowing back and leaking. The filling head 206 is used to transmit signals to the monitoring terminal.

[0062] In order to achieve the purpose of fixing the support unit 4 between the connector 301 and the plug anchor plate 5, the present device is implemented in the following manner: Figure 4 As shown, threaded connecting rods 401 are fixedly connected at both ends of the support unit 4, a threaded connecting hole 303 is provided in the connecting head 301, and the threaded connecting hole 303 is threadedly matched with the threaded connecting rod 401, a connecting through hole 501 is provided in the plug-in anchor plate 5, and the connecting through hole 501 is matched with the support unit 4, and a fixing nut 6 is provided on the other side of the plug-in anchor plate 5, and the fixing nut 6 is threadedly matched with the threaded connecting rod 401.

[0063] The support unit 4 is connected to the connector 301 by threadedly engaging the threaded connecting rod 401 with the threaded connecting hole 303, and the connecting through hole 501 engages with the support unit 4, so that the support unit 4 can pass through the plug-in anchor plate 5. Subsequently, the fixing nut 6 is screwed onto the threaded connecting rod 401 at the other end of the support unit 4 to restrict the plug-in anchor plate 5 to the support unit 4.

[0064] The working principle and use process of the utility model are as follows: when using, it is necessary to prefabricate the support unit 4 in advance according to the material of the core wall 1. When pouring the prefabrication, insert the threaded connecting rods 401 at both ends of the support unit 4, and then fix the threaded connecting rods 401 to both ends of the support unit 4. The threaded connecting rods 401 are threadedly matched with the threaded connecting holes 303 to install the support unit 4 on the connector 301. Then, the plug-in anchor plate 5 is plugged and fixed on the outer wall of the core wall 1. The support unit 4 is passed through the connecting through hole 501, and the fixing nut 6 is screwed onto the thread at the other end of the support unit 4. The internal monitoring device can be fixed on the outer wall of the core wall 1 on the connecting rod 401, and then the temperature monitor 7 and the strain gauge 3 are connected by cable 307. The elastic cavity module 2 is fixed to the outer wall of the core wall 1 through the fixing feet 204 and bolts, and the monitoring device is fixed inside the elastic cavity module 2. The filling device can be connected using the filling head 206 to fill a certain amount of medium into the elastic cavity module 2. The medium does not affect the normal operation of the internal monitoring mechanism. At the same time, the extrusion force of the backfill dam body 101 can be transmitted to the core wall 1 by using the medium as a medium.

[0065] Compared with the prior art, the present invention has the following beneficial effects:

[0066] (1) The utility model adds a certain medium into the elastic cavity module, so that the elastic cavity module is in an expanded state, and then squeezes the measurement module to simulate the force of the backfill dam body squeezing the core wall body, making the core wall deformation detection result more accurate;

[0067] (2) The present invention sets the support unit and the core wall to be made of the same material. When the core wall body deforms due to thermal expansion and contraction, the support unit will also lengthen or shorten synchronously, making the deformation monitoring data of the measurement module connected to the support unit more accurate;

[0068] (3) The deformation behavior of the core wall is not only affected by mechanical factors (such as load and stress), but also by environmental factors (especially temperature). By connecting to the temperature monitor at the same time, the utility model sets up a strain gauge and a temperature monitor at the same time, and collects and analyzes data through a unified monitoring terminal, which significantly improves the comprehensiveness and accuracy of the core wall deformation monitoring.

[0069] (4) In the present invention, the strain monitoring subunit can flexibly adapt to deformation through the rotation connection on one side, thereby preventing damage to the structure during long-term use, thereby extending the service life of the structure.

[0070] The above descriptions are merely a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application discloses the preferred embodiments as above, they are not intended to limit the present application. Any technical personnel familiar with the present profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A core wall deformation monitoring device, characterized in that: It includes a measuring module and an elastic cavity module; The measuring module is fixed on the outer wall of the core wall and is used to obtain the deformation parameters of the core wall; The elastic cavity module is covered on the measuring module, and the interior of the cavity of the elastic cavity module is filled with a medium, and the medium is used to squeeze the elastic cavity module and apply stress to the measuring module.

2. The core wall deformation monitoring device according to claim 1, characterized in that: An outer surface of the elastic cavity module is provided with an opening, and the opening is used for injecting a medium.

3. The core wall deformation monitoring device according to claim 1, characterized in that: The measurement module includes a monitoring unit and a supporting unit; The monitoring unit is arranged on the outer wall of the core wall and is used to obtain deformation parameters of the core wall; The support units are arranged at both ends of the monitoring unit and are fixedly connected to the outer wall of the core wall to prevent the monitoring unit from shifting.

4. The core wall deformation monitoring device according to claim 3, characterized in that: The material of the support unit is the same as that of the core wall.

5. The core wall deformation monitoring device according to claim 1, characterized in that: The elastic cavity module includes a cavity unit and a connection unit; The cavity unit is covered on the measuring module and is used to accommodate the measuring module, and the interior of the cavity unit is filled with a medium; The connection unit surrounds the periphery of the cavity unit and is used to connect the elastic cavity module with the outer wall of the core wall.

6. The core wall deformation monitoring device according to claim 5, characterized in that: The elastic cavity module further includes a sealing unit; The sealing unit is provided between the connecting unit and the outer wall of the core wall, and is used for sealing the connection between the connecting unit and the outer wall of the core wall.

7. The core wall deformation monitoring device according to claim 3, characterized in that: The monitoring unit includes: a strain monitoring subunit and a temperature monitoring subunit; The strain monitoring subunit is arranged on the outer wall of the core wall, and both ends of the strain monitoring subunit are connected to the supporting unit; The temperature monitoring subunit is arranged on the outer wall of the core wall.

8. The core wall deformation monitoring device according to claim 7, characterized in that: At least one end of the strain monitoring subunit is rotatably connected to the supporting unit at the corresponding end.

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