Concrete vault secondary lining pouring quality monitoring device and detection method

Abstract

The invention belongs to the technical field of tunnel secondary lining construction, and discloses a concrete vault secondary lining pouring quality monitoring device which comprises a tunnel cave wall, geotechnical cloth is arranged on the inner wall of the tunnel cave wall, a waterproof plate is arranged in the geotechnical cloth, a pouring area is arranged in the waterproof plate, and a trolley is arranged in the pouring area. A plurality of monitoring lines are evenly arranged between the geotechnical cloth and the waterproof plate in the length direction of the tunnel, a plurality of pressure elements and ultrasonic detection devices are further arranged between the geotechnical cloth and the waterproof plate, and the pressure elements and the ultrasonic detection devices are connected to a display terminal through data extension lines. An electric signal is triggered through the extrusion effect of concrete pouring on the pressure sensor, meanwhile, according to monitoring of the ultrasonic detection device, active control over the concrete vault secondary lining pouring quality is achieved, the concrete void problem is converted into beforehand control from post remediation, the concrete pouring quality is greatly improved, and the concrete void problem is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel secondary lining construction, in particular to a concrete vault secondary lining pouring quality monitoring device and a detection method. Background Art

[0002] In the process of tunnel construction, the existing technology often first provides initial support for the tunnel, and then pours the secondary lining concrete. Due to the influence of the construction defects of the tunnel secondary lining concrete and the shrinkage rate of the concrete itself, gaps or even cavities will inevitably appear between the secondary lining concrete poured on the tunnel vault and the initial support. Due to the thermal expansion and contraction of the air in the cavity, in severe cases, cracks will appear in the secondary lining concrete, causing water leakage on the top of the tunnel, which will bury safety hazards for the subsequent opening of the tunnel.

[0003] Tunnel secondary lining concrete construction is a key construction in the field of tunnel engineering, generally used to ensure the safety and stability of the tunnel structure. Commonly used in traffic tunnel construction, it involves the use of specialized equipment for the installation, compaction and quality control of lining materials.

[0004] In the prior art, the guidance and positioning functions of the vault lining may be limited, resulting in an inability to accurately determine whether the vault lining is correctly placed or compacted. This may cause lining quality problems, such as uneven compaction or structural defects, which will affect the overall safety and durability of the tunnel. As a result, due to insufficient pumping pressure, inaccurate mix ratio management, and lax supervision during the pouring process, the secondary lining of the tunnel may suffer from problems such as vault hollowing and stratification. Summary of the invention

[0005] The purpose of the present invention is to provide a device for monitoring the pouring quality of a concrete vault secondary lining, so as to solve the problems raised in the above background technology, such as vault hollowing and stratification segregation, caused by insufficient pumping pressure, inaccurate mix ratio management, and lax supervision during the pouring process.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device for monitoring the quality of secondary lining pouring of a concrete vault comprises a tunnel wall, wherein the inner wall of the tunnel wall is provided with a geotextile, a waterproof board is provided inside the geotextile, a pouring area is provided inside the waterproof board, and a trolley is provided inside the pouring area;

[0008] A plurality of monitoring lines are evenly arranged between the geotextile and the waterproof board along the length direction of the tunnel. A plurality of pressure elements and ultrasonic detection devices are also arranged between the geotextile and the waterproof board, and the pressure elements and ultrasonic detection devices are respectively connected to the display terminal through data extension lines.

[0009] Further preferably, the plurality of monitoring lines are arranged uniformly on both sides in sequence with the arch of the tunnel wall as the center.

[0010] Further preferably, the pressure elements and the ultrasonic detection devices are evenly arranged on both sides of the monitoring line, and the arrangement direction of the pressure elements and the ultrasonic detection devices is perpendicular to the length direction of the tunnel.

[0011] Further preferably, each of the monitoring lines is also connected to a pressure element, and the pressure element arranged on the monitoring line is a compression strip sensor, and the compression strip sensor is also connected to the display terminal via a data extension line.

[0012] Further preferably, the pressure element is a pressure sensor.

[0013] The present invention also provides a technical solution, a detection method of a concrete vault secondary lining pouring quality monitoring device, comprising the following steps:

[0014] The pressure sensor, monitoring circuit and ultrasonic detection device are installed between the geotextile and the waterproof board respectively;

[0015] Connect the pressure sensor, the compaction strip sensor on the monitoring line and the ultrasonic detection device to the display terminal through data extension cables respectively;

[0016] Move the trolley to the position corresponding to the pouring area inside the tunnel wall;

[0017] During the pouring of the secondary lining of the concrete vault, the electrical signals generated by the pressure sensor and the compaction strip sensor arranged on the monitoring line and the images collected by the ultrasonic detection device are transmitted to the display terminal;

[0018] The display terminal performs data analysis on the electrical signal generated by the pressure sensor and the image collected by the ultrasonic detection device, and displays the real-time results on the display terminal;

[0019] After pouring is completed, repeat the above steps to continue to complete the next stage of concrete vault secondary lining pouring work.

[0020] Further preferably, the display terminal performs data analysis on the electrical signal generated by the pressure sensor and the image collected by the ultrasonic detection device, and displays the real-time results on the display terminal. If it is detected that the density of the concrete inside the pouring area is not up to standard and the concrete void position is found, the pouring of concrete is stopped and the concrete void position is processed. After the processing is completed, the secondary lining pouring of the concrete vault is continued.

[0021] Further preferably, when the pressure sensor, the monitoring line and the ultrasonic detection device are respectively installed between the geotextile and the waterproof board, the pressure sensors are evenly arranged on both sides of the monitoring line.

[0022] Further preferably, when the pressure sensor, the monitoring line and the ultrasonic detection device are respectively installed between the geotextile and the waterproof board, the ultrasonic detection device is evenly arranged on both sides of the monitoring line.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides a device and method for real-time monitoring of lining pouring in a sealed pouring area by using a pressure element in conjunction with an ultrasonic detection device, and judging the pouring density in real time according to a display terminal. Active monitoring of the pouring quality of the secondary lining concrete is achieved, and the concrete degassing problem is transformed from post-remediation to pre-control. The entire device is easy to operate and provides convenience for manual inspection.

[0025] The squeezing effect of concrete pouring on the pressure sensor triggers an electrical signal. At the same time, based on the monitoring of the ultrasonic detection device, the quality of the secondary lining pouring of the concrete vault is actively controlled, and the problem of concrete voids is transformed from post-remedy to pre-control, which greatly improves the quality of concrete pouring and reduces the problem of concrete voids. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall process of the present invention;

[0027] Figure 2 It is a schematic diagram of the installation of the pressure element and the ultrasonic detection device of the present invention;

[0028] Figure 3 It is a schematic diagram of the position distribution of the pressure elements of the present invention;

[0029] In the figure: 1. Tunnel wall; 2. Geotextile; 3. Pressure sensor; 4. Ultrasonic detection device; 5. Waterproof board; 6. Pouring area; 7. Trolley; 31. Monitoring line. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the embodiments of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0032] See also Figure 1-Figure 3 , the present invention provides a technical solution:

[0033] The device for monitoring the quality of secondary lining pouring of a concrete vault comprises a tunnel wall 1, wherein the inner wall of the tunnel wall 1 is provided with a geotextile 2, a waterproof board 5 is provided inside the geotextile 2, a pouring area 6 is provided inside the waterproof board 5, and a trolley 7 is provided inside the pouring area 6;

[0034] A plurality of monitoring lines 31 are evenly arranged between the geotextile 2 and the waterproof board 5 along the length direction of the tunnel. A plurality of pressure elements and ultrasonic detection devices 4 are also arranged between the geotextile 2 and the waterproof board 5, and the pressure elements and ultrasonic detection devices 4 are respectively connected to the display terminal through data extension lines.

[0035] In the present invention, the plurality of monitoring lines 31 are arranged uniformly on both sides in sequence with the dome of the tunnel wall 1 as the center.

[0036] In the present invention, the pressure element and the ultrasonic detection device 4 are evenly arranged on both sides of the monitoring line 31, and the arrangement direction of the pressure element and the ultrasonic detection device 4 is perpendicular to the length direction of the tunnel.

[0037] In the present invention, each of the monitoring lines 31 is also connected to a pressure element, and the pressure element arranged on the monitoring line is a compression strip sensor, and the compression strip sensor is also connected to the display terminal through a data extension line.

[0038] In the present invention, the pressure element is a pressure sensor 3 .

[0039] The present invention also provides a technical solution, a detection method of a concrete vault secondary lining pouring quality monitoring device, comprising the following steps:

[0040] The pressure sensor 3, the monitoring circuit 31 and the ultrasonic detection device 4 are respectively installed between the geotextile 2 and the waterproof board 5;

[0041] The pressure sensor 3, the compaction strip sensor on the monitoring line and the ultrasonic detection device 4 are respectively connected to the display terminal through data extension cables;

[0042] Move the trolley 7 to a position corresponding to the injection area 6 inside the tunnel wall 1;

[0043] During the pouring of the secondary lining of the concrete vault, the electrical signals generated by the pressure sensor 3 and the compaction strip sensor provided on the monitoring line 31 and the images collected by the ultrasonic detection device 4 are transmitted to the display terminal;

[0044] The display terminal performs data analysis on the electrical signal generated by the pressure sensor 3 and the image collected by the ultrasonic detection device 4, and displays the real-time results on the display terminal;

[0045] After pouring is completed, repeat the above steps to continue to complete the next stage of concrete vault secondary lining pouring work.

[0046] In the present invention, the display terminal performs data analysis on the electrical signal generated by the pressure sensor 3 and the image collected by the ultrasonic detection device 4, and displays the real-time results on the display terminal. If it is detected that the density of the concrete inside the pouring area 6 does not meet the standard and the concrete void position is found, the pouring of concrete is stopped and the concrete void position is processed. After the processing is completed, the secondary lining pouring of the concrete vault is continued.

[0047] In the present invention, when the pressure sensor 3 , the monitoring line 31 and the ultrasonic detection device 4 are respectively installed between the geotextile 2 and the waterproof board 5 , the pressure sensor 3 is evenly arranged on both sides of the monitoring line 31 .

[0048] In the present invention, when the pressure sensor 3 , the monitoring line 31 and the ultrasonic detection device 4 are respectively installed between the geotextile 2 and the waterproof board 5 , the ultrasonic detection device 4 is evenly arranged on both sides of the monitoring line 31 .

[0049] Embodiment: Before pouring the secondary lining of the tunnel concrete vault, firstly, a plurality of pressure sensors 3, five monitoring lines 31 of Z0, Z1, Z2, Z3, and Z4 and a plurality of ultrasonic detection devices 4 are respectively installed between the geotextile 2 and the waterproof board 5 inside the tunnel wall 1 of the first stage; the pressure sensors 3 and the plurality of ultrasonic detection devices 4 are respectively evenly arranged on both sides of the monitoring lines 31; the plurality of monitoring lines 31 are centered at the vault of the tunnel wall 1 and are arranged evenly to both sides in sequence, and each of the monitoring lines 31 is also connected to a pressure element, and the pressure element arranged on the monitoring line 31 is a compacting strip sensor; the pressure sensors 3, the monitoring lines 31 are connected to the geotextile 2 and the waterproof board 5 inside the tunnel wall 1 of the first stage; the pressure sensors 3 and the ultrasonic detection devices 4 are evenly arranged on both sides of the monitoring lines 31; the plurality of monitoring lines 31 are centered at the vault of the tunnel wall 1 and are evenly arranged to both sides in sequence, and each of the monitoring lines 31 is also connected to a pressure element, and the pressure element arranged on the monitoring line 31 is a compacting strip sensor; the pressure sensors 3, the monitoring lines 31 are connected to the geotextile 2 and the waterproof board 5 inside the tunnel wall 1 of the first stage; the pressure sensors 3 and the ultrasonic detection devices 4 are evenly arranged on both sides of the monitoring lines 31 ... and the monitoring lines 31 are connected to the geotextile 2 and the waterproof board 5 inside the tunnel wall 1 of the first stage; the pressure sensors 3 and the ultrasonic detection devices 4 are evenly arranged on both sides of the monitoring lines 31; The compaction strip sensor and ultrasonic detection device 4 on the line 31 are respectively connected to the display terminal through data extension lines; the trolley 7 is moved to the first-stage pouring area 6 inside the tunnel wall 1; during the pouring of the secondary lining of the concrete vault, the electrical signals generated by the pressure sensor 3 and the compaction strip sensor arranged on the monitoring line 31 and the images collected by the ultrasonic detection device 4 are transmitted to the display terminal; the display terminal performs data analysis on the electrical signals generated by the pressure sensor 3 and the images collected by the ultrasonic detection device 4, and displays the real-time results on the display terminal; after the pouring is completed, the above steps are repeated to continue to complete the next stage of the pouring of the secondary lining of the concrete vault.

[0050] The squeezing effect of concrete pouring on the pressure sensor triggers an electrical signal. At the same time, based on the monitoring of the ultrasonic detection device, the quality of the secondary lining pouring of the concrete vault is actively controlled, and the problem of concrete voids is transformed from post-remedy to pre-control, which greatly improves the quality of concrete pouring and reduces the problem of concrete voids.

[0051] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for monitoring the quality of secondary lining pouring of a concrete vault, comprising a tunnel wall (1), characterized in that: The inner wall of the tunnel wall (1) is provided with a geotextile (2), a waterproof board (5) is provided inside the geotextile (2), a pouring area (6) is provided inside the waterproof board (5), and a trolley (7) is provided inside the pouring area (6); A plurality of monitoring lines (31) are evenly arranged between the geotextile (2) and the waterproof board (5) along the length direction of the tunnel, and a plurality of pressure elements and ultrasonic detection devices (4) are also arranged between the geotextile (2) and the waterproof board (5), and the pressure elements and ultrasonic detection devices (4) are respectively connected to a display terminal via a data extension line.

2. The device for monitoring the quality of secondary lining pouring of concrete vault according to claim 1 is characterized in that: The plurality of monitoring lines (31) are arranged uniformly on both sides in sequence with the arch of the tunnel wall (1) as the center.

3. The device for monitoring the quality of secondary lining pouring of concrete vault according to claim 1 is characterized in that: The pressure element and the ultrasonic detection device (4) are evenly arranged on both sides of the monitoring line (31), and the arrangement direction of the pressure element and the ultrasonic detection device (4) is perpendicular to the length direction of the tunnel.

4. The device for monitoring the quality of secondary lining pouring of concrete vault according to claim 1 is characterized in that: Each monitoring line (31) is also connected to a pressure element. The pressure element provided on the monitoring line (31) is a compression strip sensor, and the compression strip sensor is also connected to a display terminal via a data extension line.

5. The device for monitoring the quality of secondary lining pouring of concrete vault according to claim 3 is characterized in that: The pressure element is a pressure sensor (3).

6. The detection method of the concrete vault secondary lining pouring quality monitoring device according to claims 1-5 is characterized in that: The following steps are involved: The pressure sensor (3), the monitoring circuit (31) and the ultrasonic detection device (4) are respectively installed between the geotextile (2) and the waterproof board (5); The pressure sensor (3), the compaction strip sensor on the monitoring line (31), and the ultrasonic detection device (4) are respectively connected to the display terminal via data extension cables; Moving the trolley (7) to a position corresponding to the injection area (6) inside the tunnel wall (1); During the pouring of the secondary lining of the concrete vault, the electrical signals generated by the pressure sensor (3) and the compaction strip sensor arranged on the monitoring line (31) and the images collected by the ultrasonic detection device (4) are transmitted to the display terminal; The display terminal performs data analysis on the electrical signal generated by the pressure sensor (3) and the image collected by the ultrasonic detection device (4), and displays the real-time result on the display terminal; After pouring is completed, repeat the above steps to continue to complete the next stage of concrete vault secondary lining pouring work.

7. The detection method of the concrete vault secondary lining pouring quality monitoring device according to claim 6 is characterized by: The display terminal performs data analysis on the electrical signal generated by the pressure sensor (3) and the image collected by the ultrasonic detection device (4), and displays the real-time results on the display terminal. If it is detected that the density of the concrete inside the pouring area (6) does not meet the standard and a concrete void position is found, the pouring of concrete is stopped and the concrete void position is processed. After the processing is completed, the secondary lining pouring of the concrete vault is continued.

8. The detection method of the concrete vault secondary lining pouring quality monitoring device according to claim 6 is characterized by: When the pressure sensor (3), the monitoring line (31) and the ultrasonic detection device (4) are respectively installed between the geotextile (2) and the waterproof board (5), the pressure sensor (3) is evenly arranged on both sides of the monitoring line (31).

9. The detection method of the concrete vault secondary lining pouring quality monitoring device according to claim 6 is characterized by: When the pressure sensor (3), the monitoring line (31) and the ultrasonic detection device (4) are respectively installed between the geotextile (2) and the waterproof board (5), the ultrasonic detection device (4) is evenly arranged on both sides of the monitoring line (31).

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