Duct piece floating monitoring device and monitoring method

Abstract

The invention belongs to the technical field of shield construction, and discloses a segment floating monitoring device and method.The segment floating monitoring device comprises a first driving part, a second driving part and a displacement sensor, the first driving part can be fixed to the tail end of a shield tunneling machine, and the output end of the first driving part can move in the moving direction of the shield tunneling machine; the second driving part is arranged at the output end of the first driving part, and the output end of the second driving part can move in the direction perpendicular to the moving direction of the shield tunneling machine; the displacement sensor is arranged at the output end of the second driving part and connected with an external data analysis device, and the displacement sensor can monitor the displacement amount of the shield segment opposite to the monitoring end of the displacement sensor; according to the monitoring method, the duct piece floating monitoring device is adopted, the position change of the shield duct piece in the grouting process and after grouting can be monitored in real time, accurate data information is provided for constructors, interference can be conveniently conducted when the shield duct piece floats upwards, and the construction quality and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shield construction, and in particular to a segment floating monitoring device and a monitoring method. Background Art

[0002] As more and more tunnels are completed and opened to traffic, shield tunnel construction is becoming increasingly popular due to its advantages, such as minimal disturbance to the surrounding rock and high degree of mechanization. However, during shield construction, shield segments are prone to floating, which can lead to quality problems such as cracking and leakage, seriously affecting the quality of shield construction. While synchronous grouting pressure is currently known to be a key factor in shield segment floating, effective monitoring methods are still lacking, making it difficult to provide construction personnel with effective data support to effectively control shield segment floating. Summary of the Invention

[0003] The object of the present invention is to provide a pipe segment floating monitoring device and a monitoring method, which can effectively monitor the floating amount of the pipe segment in real time and improve the construction quality and efficiency.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] Segment floating monitoring device, including:

[0006] a first driving member, wherein the first driving member can be fixed to the rear end of the shield machine, and an output end of the first driving member can move along the moving direction of the shield machine;

[0007] a second driving member, the second driving member being provided at an output end of the first driving member, the output end of the second driving member being capable of moving in a direction perpendicular to a moving direction of the shield machine;

[0008] A displacement sensor is provided at the output end of the second driving member and can be connected to an external data analysis device. The displacement sensor can monitor the displacement of the shield segment relative to the monitoring end of the displacement sensor.

[0009] In some embodiments, a guide member is further provided at the output end of the first driving member, and the guide member can guide the movement of the displacement sensor.

[0010] In some embodiments, the guide member includes a guide plate and a guide rail. The guide plate is arranged at the output end of the first driving member. The guide rail is arranged on the guide plate along a direction perpendicular to the moving direction of the shield machine. The displacement sensor is movably arranged on the guide rail.

[0011] In some embodiments, a blocking member is provided at the end of the guide rail.

[0012] In some embodiments, a mounting bracket is provided at the output end of the second driving member, the mounting bracket is movably provided on the guide rail, and the displacement sensor is detachably provided on the mounting bracket.

[0013] In some embodiments, a mounting platform is provided at the output end of the second driving member, the mounting platform is provided with a first mounting hole, and a second mounting hole is provided on the mounting bracket. The locking member can lock and connect the mounting platform and the mounting bracket through the first mounting hole and the second mounting hole.

[0014] In some embodiments, the displacement sensor is a draw wire sensor, and the draw wire of the draw wire sensor can be connected to the shield segment to be monitored.

[0015] In some embodiments, the displacement sensor is an optical displacement sensor.

[0016] In some embodiments, the first driving member and / or the second driving member is an electric telescopic rod.

[0017] A monitoring method is also provided, using the above-mentioned segment floating monitoring device; the method comprises the following steps:

[0018] Fixing the first driving member to the tail end of the shield machine;

[0019] A point on the shield segment is selected as a marking point, a monitoring end of the displacement sensor is aligned with the marking point, and the second driving member is adjusted so that the marking point is within the monitoring range of the displacement sensor;

[0020] Then grouting is performed, and the movement of the marking point is monitored by the displacement sensor, and the first driving member is controlled so that the monitoring end of the displacement sensor is facing the marking point during the movement of the shield machine.

[0021] Beneficial effects of the present invention:

[0022] The first driving member is fixed to the tail end of the shield machine, and the first driving member and the second driving member are driven to enable the monitoring end of the displacement sensor to correspond to the shield segment that needs to be monitored, and then grouting is performed. The displacement change of the shield segment is monitored by the displacement sensor, and the position change of the shield segment during the grouting process and after the grouting can be monitored in real time, which can provide more accurate data information for construction personnel and implement feedback to facilitate intervention when the shield segment floats up, thereby improving construction quality and efficiency; and during the entire grouting process, the shield machine is still drilling. At this time, the output end of the first driving member can be controlled to move in the moving direction of the shield machine to keep the monitoring position of the displacement sensor unchanged. This process does not affect the entire shield construction process, thereby ensuring construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the segment floating monitoring device of the present invention;

[0024] Figure 2 Schematic diagram of a displacement sensor in a segment floating monitoring device of the present invention;

[0025] Figure 3 Schematic diagram of the first driving member in the segment floating monitoring device of the present invention;

[0026] Figure 4 It is a schematic diagram of the second driving member, the mounting platform and the mounting bracket in the pipe segment floating monitoring device of the present invention.

[0027] In the picture:

[0028] 1. Shield machine; 2. First drive member; 3. Second drive member; 4. Displacement sensor; 5. Guide member; 6. Mounting bracket; 61. First mounting hole; 7. Mounting platform; 71. Second mounting hole; 8. Mounting rod; 9. Shield segment. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0030] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0031] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0032] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0033] like Figures 1 to 4 As shown, the present application provides a segment floating monitoring device, which includes a first driving member 2, a second driving member 3 and a displacement sensor 4. The first driving member 2 can be fixed to the tail end of the shield machine 1, and the output end of the first driving member 2 can move along the moving direction of the shield machine 1; the second driving member 3 is arranged at the output end of the first driving member 2, and the output end of the second driving member 3 can move in a direction perpendicular to the moving direction of the shield machine 1; the displacement sensor 4 is arranged at the output end of the second driving member 3 and can be connected to an external data analysis device. The displacement sensor 4 can monitor the displacement of the shield segment 9 relative to the monitoring end of the displacement sensor 4.

[0034] The first driving member 2 is fixed to the tail end of the shield machine 1, and by driving the first driving member 2 and the second driving member 3, the monitoring end of the displacement sensor 4 can correspond to the shield segment 9 that needs to be monitored, and then grouting is performed. The displacement change of the shield segment 9 is monitored by the displacement sensor 4, and the position change of the shield segment 9 during the grouting process and after the grouting can be monitored in real time, which can provide more accurate data information for the construction personnel and implement feedback to facilitate intervention when the shield segment 9 floats up, thereby improving the construction quality and efficiency; and during the entire grouting process, the shield machine 1 is still drilling. At this time, the output end of the first driving member 2 can be controlled to move in the moving direction of the shield machine 1 to keep the monitoring position of the displacement sensor 4 unchanged. This process does not affect the entire shield construction process, thereby ensuring the efficiency of the construction.

[0035] In some embodiments, the first and second drive members 2 and 3 are electrically operated telescopic rods equipped with a remote control, enabling control of the first and second drive members 2 and 3. When determining the monitoring position, the second drive member 3 is raised and lowered to ensure that the displacement sensor 4 is in the appropriate monitoring position. Simultaneously, as the shield machine 1 drills, the first drive member 2 is extended in real time via the remote control to ensure accurate monitoring of the position. In alternative embodiments, the first and second drive members 2 and 3 can also be replaced by manually operated telescopic rods.

[0036] In some embodiments, the output end of the first drive member 2 is further provided with a guide member 5. The guide member 5 can guide the movement of the displacement sensor 4 in a direction perpendicular to the movement of the shield machine 1, thereby ensuring the stability of the second drive member 3 driving the displacement sensor 4 to rise and fall. Specifically, the guide member 5 includes a guide plate and a guide rail. The guide plate is provided at the output end of the first drive member 2. The guide rail is provided on the guide plate in a direction perpendicular to the movement of the shield machine 1. The displacement sensor 4 moves on the guide rail. Furthermore, to prevent excessive movement, a blocking member is provided at the end of the guide rail to prevent the displacement sensor 4 from disengaging from the guide rail.

[0037] In some embodiments, in order to facilitate installation, a mounting bracket 6 is provided at the output end of the second driving member 3. A sliding groove is provided on the mounting bracket 6. The mounting bracket 6 slides on the sliding rail through the sliding groove. A fixing hole is also provided on the mounting bracket 6. The displacement sensor 4 is detachably fixed to the mounting bracket 6 by bolts or screws passing through the fixing hole. Then, the displacement sensor 4 can be replaced through the detachable connection. Furthermore, a mounting platform 7 is also provided at the output end of the second driving member 3. The mounting bracket 6 is mounted on the mounting platform 7 so that the bracket 6 can be stably installed. Specifically, a first mounting hole 61 is provided on the mounting platform 7, and a second mounting hole 71 is provided on the mounting bracket 6. The side of the mounting bracket 6 where the sliding groove is provided protrudes from the mounting platform 7. A locking member can lock and connect the mounting platform 7 and the mounting bracket 6 through the first mounting hole 61 and the second mounting hole 71. The locking member can include, but is not limited to, a bolt and a nut.

[0038] In some embodiments, the displacement sensor 4 is a drawstring sensor. The drawstring of the drawstring sensor can be connected to the shield segment 9 to be monitored. The drawstring sensor is a conventional technology that primarily stretches the drawstring when the shield segment 9 moves, thereby converting the movement into a signal for transmission. In some alternative embodiments, the displacement sensor 4 may also be an optical displacement sensor, such as a laser displacement sensor or an infrared displacement sensor.

[0039] In some embodiments, the segment floating monitoring device is further provided with a mounting rod 8, which is provided at the rear of the shield machine 1. The first drive member 2 is mounted on the mounting rod 8 via bolts or other connecting members. Furthermore, the first drive member 2 is connected to the mounting rod 8 via bolts in an angle-adjustable manner, so that the bolts can be loosened first to allow the first drive member 2 to slightly adjust its angle relative to the mounting rod 8 to accommodate angle changes, and then the bolts can be tightened after the angle is adjusted.

[0040] The present application also provides a monitoring method, which uses the above-mentioned segment floating monitoring device and includes the following steps:

[0041] Fixing the first driving member 2 to the tail end of the shield machine 1;

[0042] Then, a marking point is selected on the shield segment 9 to be monitored, and the monitoring end of the displacement sensor 4 is aligned with the above-mentioned marking point. The distance between the displacement sensor 4 and the shield segment 9 is adjusted by the second driving member 3, so that the displacement sensor 4 is in a suitable monitoring position. Specifically, when the displacement sensor 4 is a draw-wire sensor, its draw-wire end is fixed to the marking point. For example, it can be fixed to the embedded steel bar in the shield segment 9. When the displacement sensor 4 is an optical sensor, the monitoring end is aligned with the above-mentioned marking point. The provision of the second driving member 3 can, on the one hand, avoid the length limitation of the draw-wire when using the draw-wire sensor; on the other hand, when using the optical sensor, it can ensure that the shield segment 9 is within its monitoring range.

[0043] Grouting is then carried out, and the movement of the marking point is monitored by displacement sensor 4. The signal is transmitted to an external data analysis device for analysis, providing construction personnel with relatively accurate data information. During this process, the first driving member 2 is controlled to extend to the length of the drilling distance of the shield machine 1, so that the monitoring end of the displacement sensor 4 is aligned with the marking point during the movement of the shield machine 1. This ensures the accuracy of the monitoring process, and the monitoring process does not affect the entire shield construction process, thereby ensuring construction efficiency.

[0044] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. The segment floating monitoring device is characterized by: include: A first driving member (2), wherein the first driving member (2) can be fixed to the rear end of the shield machine (1), and an output end of the first driving member (2) can move along the moving direction of the shield machine (1); A second driving member (3), the second driving member (3) being arranged at an output end of the first driving member (2), the output end of the second driving member (3) being capable of moving in a direction perpendicular to a moving direction of the shield machine (1); A displacement sensor (4) is provided at the output end of the second driving member (3) and is capable of being connected to an external data analysis device. The displacement sensor (4) is capable of monitoring the displacement of a shield segment (9) relative to the monitoring end of the displacement sensor (4).

2. The segment floating monitoring device according to claim 1, characterized in that: The output end of the first driving member (2) is further provided with a guide member (5), and the guide member (5) can guide the movement of the displacement sensor (4).

3. The segment floating monitoring device according to claim 2, characterized in that: The guide member (5) comprises a guide plate and a guide rail, wherein the guide plate is arranged at the output end of the first driving member (2), the guide rail is arranged on the guide plate along a direction perpendicular to the movement direction of the shield machine (1), and the displacement sensor (4) is movably arranged on the guide rail.

4. The segment floating monitoring device according to claim 3 is characterized in that: A blocking piece is provided at the end of the guide rail.

5. The segment floating monitoring device according to claim 3 is characterized in that: The output end of the second driving member (3) is provided with a mounting bracket (6), the mounting bracket (6) is movably arranged on the guide rail, and the displacement sensor (4) is detachably arranged on the mounting bracket (6).

6. The segment floating monitoring device according to claim 5, characterized in that: The output end of the second driving member (3) is provided with a mounting platform (7), the mounting platform (7) is provided with a first mounting hole (61), and the mounting bracket (6) is provided with a second mounting hole (71). The locking member can lock and connect the mounting platform (7) and the mounting bracket (6) through the first mounting hole (61) and the second mounting hole (71).

7. The segment floating monitoring device according to claim 1, characterized in that: The displacement sensor (4) is a drawstring sensor, and the drawstring of the drawstring sensor can be connected to the shield segment (9) to be monitored.

8. The segment floating monitoring device according to claim 1, characterized in that: The displacement sensor (4) is an optical displacement sensor.

9. The segment floating monitoring device according to claim 1, characterized in that: The first driving member (2) and / or the second driving member (3) is an electric telescopic rod.

10. A monitoring method using the segment floating monitoring device according to any one of claims 1 to 9, characterized in that: The steps include: Fixing the first driving member (2) to the tail end of the shield machine (1); A point on the shield segment (9) is selected as a marking point, a monitoring end of a displacement sensor (4) is aligned with the marking point, and the marking point is positioned within the monitoring range of the displacement sensor (4) by adjusting the second driving member (3); Grouting is then performed, and the movement of the marking point is monitored by the displacement sensor (4), and the first driving member (2) is controlled so that the monitoring end of the displacement sensor (4) faces the marking point during the movement of the shield machine (1).

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