Deformation monitoring equipment for tunnel supporting structure

Abstract

The utility model discloses deformation monitoring equipment for a tunnel supporting structure, belongs to deformation monitoring equipment, and solves the problems in the prior art that the surface deformation trend of a certain area cannot be comprehensively monitored and tunnel safety control requirements under complex geological conditions are difficult to meet due to the fact that deformation measurement is carried out in a spot measurement mode. The tunnel deformation monitoring system comprises a mounting structure mounted on a tunnel supporting structure and a deformation monitoring structure arranged on the mounting structure, wherein the deformation monitoring structure comprises a mounting plate which is arranged on the mounting structure and is parallel to a tunnel surface, and monitoring units which are arranged on the mounting plate in an array manner and are used for monitoring deformation of each point. The deformation monitoring device is used for deformation monitoring of the tunnel supporting structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to a deformation monitoring equipment for tunnel supporting structure for deformation monitoring of tunnel supporting structure belongs to deformation monitoring equipment. BACKGROUND

[0002] The initial lining is the temporary supporting structure (such as shotcrete, anchor rod, steel arch) immediately after tunnel excavation, which directly bears the deformation pressure of surrounding rock. Monitoring the deformation of the initial lining can evaluate the stability of the surrounding rock, verify the rationality of the supporting parameters, and prevent construction risks such as collapse. Therefore, the deformation monitoring of the tunnel supporting structure usually takes the initial lining support of the tunnel as the core object.

[0003] In the prior art, the deformation monitoring equipment for tunnel supporting structure is directly arranged on the tunnel supporting structure, and point measurement is used for deformation measurement, including directly using point-to-point for point deformation measurement, or using face-to-face for deformation measurement at the highest point. Although it can measure the deformation of the tunnel supporting structure caused by the deformation of the tunnel, it still has the following technical problems:

[0004] Using point measurement for deformation measurement cannot monitor the surface deformation trend of a certain area in real time and comprehensively, and it is difficult to meet the safety control requirements of the tunnel under complex geological conditions. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a deformation monitoring equipment for tunnel supporting structure, which solves the problem that the prior art uses point measurement for deformation measurement, cannot comprehensively monitor the surface deformation trend of a certain area, and is difficult to meet the safety control requirements of the tunnel under complex geological conditions.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0007] A deformation monitoring equipment for tunnel supporting structure, comprising a mounting structure mounted on the tunnel supporting structure, a deformation monitoring structure arranged on the mounting structure, the deformation monitoring structure comprising a mounting plate arranged on the mounting structure and parallel to the tunnel surface, and a monitoring unit arranged in an array on the mounting plate to monitor the deformation of each point.

[0008] Further, the monitoring unit comprises an open-ended outer sleeve, an inner sleeve separated from the side wall of the outer sleeve is arranged in the outer sleeve, a touch rod in contact with the monitoring point is slidably arranged on the inner sleeve, a return spring connected with the touch rod is arranged on the bottom of the gap between the outer sleeve and the inner sleeve, and an infrared monitoring unit for monitoring the movement distance of the touch rod is arranged on the inner sleeve.

[0009] Further, the inner sleeve is double-layered, comprising an inner layer transparent cylinder and an outer layer cylinder, and the infrared monitoring unit is arranged between the inner layer transparent cylinder and the outer layer cylinder; or

[0010] The inner sleeve is single-layer, and a groove is arranged on the inner sleeve to mount the infrared monitoring unit.

[0011] Further, a top-closed sliding groove is oppositely arranged on the inner sleeve.

[0012] The touch rod comprises a limiting block connected with the sliding groove and connected with the reset spring, and a T-shaped rod body connected with the limiting block and slidingly matched with the inner sleeve.

[0013] Further, the infrared monitoring unit comprises a plurality of groups of infrared emitters and infrared receivers oppositely arranged along the height direction of the inner sleeve.

[0014] Further, the outer sleeve is fixedly arranged on the mounting plate; or

[0015] The outer sleeve is threadedly arranged on the mounting plate.

[0016] Further, the mounting structure comprises a clamping fixing structure clamped on the adjacent I-shaped steel, and a connecting rod connected with the clamping fixing structure and the mounting plate.

[0017] Further, the clamping fixing structure comprises an L-shaped clamping plate A connected with the connecting rod and provided with a mounting hole, and an L-shaped clamping plate B fixed with the L-shaped clamping plate A through bolts and nuts and provided with a mounting hole.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] Firstly, the utility model mounts the plurality of monitoring units arranged on the mounting plate on the tunnel supporting structure through the mounting structure to realize real-time surface monitoring by multi-point array monitoring of a certain area, and can comprehensively monitor the surface deformation trend of the certain area in real time, so as to meet the tunnel safety control demand under complex geological conditions.

[0020] Secondly, the monitoring unit in the utility model drives the touch rod to move to the opposite end of the tunnel to compress the reset spring by the deformation of the monitored area, and simultaneously monitors the movement of the touch rod through the infrared monitoring unit, and conversely, when the touch rod is not extruded by deformation, the touch rod is in the initial state of contacting the monitoring point and not being stressed under the action of the reset spring, so that the structure is simple and convenient for monitoring.

[0021] Thirdly, when the inner sleeve is limited to be double-layer structure, the material of the inner transparent cylinder body needs to ensure that the infrared light of the infrared monitoring unit can penetrate, so as to monitor the deformation, and when the inner sleeve is limited to be single-layer, a groove needs to be arranged on the inner sleeve to mount the infrared monitoring unit, so as to not only facilitate the monitoring of the deformation, but also ensure that the touch rod can slidingly match with the inner sleeve.

[0022] Four, the utility model discloses on the inner sleeve relative arrangement sliding groove, and the contact rod includes limit block and T type pole body, and the reset spring is connected with the contact rod through the limit block to make the contact rod contract to the inner sleeve under the force, and vice versa guarantees the reset state under the reset action of reset spring, so that infrared monitoring unit carries out deformation monitoring;

[0023] Five, the utility model discloses infrared monitoring unit includes the relative arrangement of multiple groups infrared emitter and infrared receiver along the height direction of inner sleeve, and the purpose is convenient for when appearing deformation, and the infrared signal that infrared emitter emits is received to the infrared receiver of corresponding position is blocked, and according to the installation position of each group infrared receiver and infrared emitter, whether the current monitoring position appears deformation, the severity of deformation etc. are quickly determined;

[0024] Six, the utility model discloses that outer sleeve is fixed or thread setting on the mounting plate, and the purpose is to consider complex geological conditions, so as to select the applicability, especially in the mode of selecting threaded cooperation, in the case where the monitoring position has concave-convex, the adjustment of position initial state is facilitated;

[0025] Seven, the utility model discloses the mounting structure through L type clamping plate A, L type clamping plate B, bolt and nut cooperation, can be quickly fixed on the I -shaped steel of specified position of this monitoring equipment. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, and should understand, the following drawing only shows some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0027] Figure 1 It is the structural schematic diagram of the utility model;

[0028] Figure 2 It is the structural schematic diagram of the clamping fixed structure and mounting plate in the utility model is connected;

[0029] Figure 3 It is the unfolded structural schematic diagram of the mounting structure in the utility model;

[0030] Figure 4 It is the structural schematic diagram of the monitoring unit in the utility model;

[0031] Figure 5 It is the structural schematic diagram of the outer sleeve in the monitoring unit in the utility model is cut open;

[0032] Figure 6 It is Figure 4 the sectional view;

[0033] Figure 7 Figure 1 is a structural schematic view of the connection between the touch rod and the reset spring in the utility model;

[0034] In the figure: 1-mounting structure, 2-deformation monitoring structure, 3-mounting plate, 4-monitoring unit, 5-clamping and fixing structure, 6-connecting rod, 7-mounting hole, 8-L-shaped clamping plate A, 9-bolt, 10-nut, 11-L-shaped clamping plate B, 12-outer sleeve, 13-inner sleeve, 14-touch rod, 15-reset spring, 16-infrared monitoring unit, 17-inner layer transparent cylinder, 18-outer layer cylinder, 19-slotted, 20-limiting block, 21-T-shaped rod body, 22-infrared transmitter, 23-infrared receiver. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0036] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] In the description of the utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.

[0038] In addition, if the terms "first", "second", "third" and the like appear, they are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0039] In addition, if the terms "horizontal", "vertical", "overhanging" and the like appear, they do not mean that the parts must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0040] In the description of the utility model, still need to explain, unless another explicit provision and limitation, if appear the term "arrangement", "installation", "link", "connection" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication of two elements inside. For ordinary skilled in the art, the above-mentioned term can be understood in the specific meaning in the utility model according to specific circumstances.

[0041] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0042] Embodiment 1

[0043] In order to solve the problem that the deformation measurement in the prior art adopts point measurement, which cannot comprehensively monitor the surface deformation trend of a certain area and is difficult to meet the tunnel safety control demand under complex geological conditions. Figures 1-7 As shown in the figure, a kind of deformation monitoring equipment for tunnel support structure is provided, including installation structure 1 installed on tunnel support structure, deformation monitoring structure 2 is arranged on installation structure 1, deformation monitoring structure 2 includes installation plate 3 arranged on installation structure 1 and parallel with tunnel surface, monitoring unit 4 for deformation monitoring of each point is arrayed on installation plate 3. Installation plate can be arc-shaped, also can be plane, specific need to be determined according to the position installed, monitoring unit 4 power supply can be external, also can have power supply module, power supply mode is existing, not too much elaboration here.

[0044] In practice, through installation structure 1, multiple monitoring units arrayed on installation plate 3 are installed on tunnel support structure to realize real-time surface monitoring by multi-point array monitoring of a certain area, that is, deformation monitoring position is monitored by monitoring unit 4, and multi-point monitoring forms coverage surface monitoring, which can comprehensively monitor the surface deformation trend of a certain area in real time, to meet the tunnel safety control demand under complex geological conditions.

[0045] Embodiment 2

[0046] On the basis of embodiment 1, the monitoring unit 4 includes an open-ended outer sleeve 12, an inner sleeve 13 separated from the side wall of the outer sleeve 12 is arranged in the outer sleeve 12, a touch rod 14 in contact with the monitoring point is slidably arranged on the inner sleeve 13, a reset spring 15 connected with the touch rod 14 is arranged on the bottom of the gap between the outer sleeve 12 and the inner sleeve 13, and an infrared monitoring unit 16 for monitoring the moving distance of the touch rod 14 is arranged on the inner sleeve 13. The outer sleeve not only facilitates the arrangement of the reset spring, but also facilitates the protection of the reset spring. The inner sleeve prevents the reset spring from being compressed or inclined when resetting, and plays a role in limiting the reset spring.

[0047] In practice, after the monitoring unit is installed in place, when deformation occurs at the corresponding point, the deformed area pushes the contact rod to move towards the opposite end of the tunnel, compressing the return spring and shrinking, and at the same time, the movement of the contact rod is sensed by the infrared monitoring unit to monitor. Conversely, when the contact rod is not pressed by deformation, the contact rod is in an initial state of contact with the monitoring point and not under stress under the action of the return spring. The structure is simple and convenient for monitoring.

[0048] Embodiment 3

[0049] On the basis of embodiment 2, the inner sleeve 13 is double-layered, including an inner layer transparent cylinder 17 and an outer layer cylinder 18, and the infrared monitoring unit 16 is arranged between the inner layer transparent cylinder 17 and the outer layer cylinder 18. When the inner sleeve is limited to be double-layered, the material of the inner layer transparent cylinder needs to ensure that the infrared light of the infrared monitoring unit can penetrate, so as to facilitate deformation monitoring; or

[0050] The inner sleeve 13 is single-layered, and a groove is arranged on the inner sleeve 13 to install the infrared monitoring unit 16. When the inner sleeve is limited to be single-layered, a groove needs to be arranged on it to install the infrared monitoring unit, not only to facilitate deformation monitoring, but also to ensure that the contact rod can slide with the inner sleeve. In practice, suitable ones are selected according to practical needs.

[0051] Embodiment 4

[0052] On the basis of embodiment 3, a top-closed sliding groove 19 is arranged on the inner sleeve 13 in opposite positions; the contact rod 14 includes a limiting block 20 connected with the return spring 15 and slidingly matched with the sliding groove 19, and a T-shaped rod body 21 connected with the limiting block 20 and slidingly matched with the inner sleeve 13. The limiting block 20 can be arranged at the middle part of the T-shaped rod body, or at the opposite end in contact with the monitoring point. If the former is adopted, the length of the T-shaped rod body needs to be longer.

[0053] In practice, the sliding groove is arranged on the inner sleeve in opposite positions, and the contact rod includes a limiting block and a T-shaped rod body, so that the return spring can be connected with the contact rod through the limiting block to make the contact rod shrink towards the inner sleeve, and vice versa, to ensure the reset state under the reset action of the return spring, so as to facilitate deformation monitoring by the infrared monitoring unit.

[0054] Embodiment 5

[0055] On the basis of embodiment 4, the infrared monitoring unit 16 comprises multiple groups of infrared emitters 22 and infrared receivers 23 arranged oppositely along the height direction of the inner sleeve 13. When the inner sleeve 13 is double-layered, the infrared emitters and the infrared receivers are arranged oppositely on the inner transparent cylinder 17 or the outer cylinder 18 between the inner transparent cylinder 17 and the outer cylinder 18 of the device; when the inner sleeve 13 is single-layered, multiple groups of grooves are arranged oppositely on it to respectively install the infrared emitters and the infrared receivers.

[0056] In practice, the infrared emitters 22 and the infrared receivers 23 can be sequentially arranged from top to bottom as four groups of A, B, C, and D, and the corresponding deformation heights are 2 cm, 4 cm, 6 cm, and 8 cm (the specific number of groups and the interval can be selected according to actual needs), when the touch rod is pushed to move inwardly into the inner sleeve 13 under the deformation force, and moves to the A position, at this time, the infrared receiver at the A position is blocked from receiving the infrared signal emitted by the infrared emitter, and the infrared receiver does not feedback the signal, which reminds the monitoring personnel that deformation occurs at this position, and it can also be known that the current deformation severity. The infrared monitoring unit in this embodiment comprises multiple groups of infrared emitters and infrared receivers arranged oppositely along the height direction of the inner sleeve, the purpose is to facilitate the blocking of the infrared receiver at the corresponding position from receiving the infrared signal emitted by the infrared emitter when deformation occurs, and quickly determining whether deformation occurs at the current monitoring position, the severity of deformation, etc. according to the installation position of each group of infrared receivers and infrared emitters.

[0057] Embodiment 6

[0058] On the basis of embodiment 5, the outer sleeve 12 is fixedly arranged on the mounting plate 3; or the outer sleeve 12 is threadedly arranged on the mounting plate 3. The outer sleeve is fixedly or threadedly arranged on the mounting plate, the purpose is to consider the complex geological conditions, so as to facilitate the selection and application, especially in the case of selecting the threaded cooperation mode, in the case that the monitoring position has concave-convex, it is beneficial to the adjustment of the initial state of the position.

[0059] Embodiment 7

[0060] On the basis of embodiment 6, the mounting structure 1 comprises a clamping and fixing structure 5 clamped on the adjacent I-beam, and a connecting rod 6 connected with the clamping and fixing structure 5 and the mounting plate 3. The clamping and fixing structure 5 comprises an L-shaped clamping plate A 8 connected with the connecting rod 6 and provided with a mounting hole 7, and an L-shaped clamping plate B 11 fixed with the L-shaped clamping plate A 8 through a bolt 9 and a nut 10 and provided with a mounting hole 7, and the L-shaped clamping plate A and the L-shaped clamping plate B are adaptively adjusted in radian according to the I-beam at the installation position. The mounting structure can quickly fix the monitoring device on the I-beam at the specified position through the cooperation of the L-shaped clamping plate A, the L-shaped clamping plate B, the bolt, and the nut. Of course, in practice, other structures can also be selected for fixing and installation.

Claims

1. A deformation monitoring device for tunnel support structures, comprising an installation structure (1) mounted on the tunnel support structure, and a deformation monitoring structure (2) disposed on the installation structure (1), characterized in that, The deformation monitoring structure (2) includes an installation plate (3) set on the installation structure (1) parallel to the tunnel surface, and an array of monitoring units (4) set on the installation plate (3) to monitor the deformation at each point.

2. The deformation monitoring device for tunnel support structure according to claim 1, characterized in that: The monitoring unit (4) includes an outer sleeve (12) with one end open, an inner sleeve (13) separated from the side wall of the outer sleeve (12) is provided inside the outer sleeve (12), a touch rod (14) that is slidably provided on the inner sleeve (13) and contacts the monitoring point, a reset spring (15) connected to the touch rod (14) is provided on the bottom of the outer sleeve (12) in the gap between the outer sleeve (12) and the inner sleeve (13), and an infrared monitoring unit (16) provided on the inner sleeve (13) to monitor the movement distance of the touch rod (14).

3. The deformation monitoring device for tunnel support structure according to claim 2, characterized in that: The inner sleeve (13) is double-layered, comprising an inner transparent cylinder (17) and an outer cylinder (18), with an infrared monitoring unit (16) positioned between the inner transparent cylinder (17) and the outer cylinder (18); or The inner sleeve (13) is a single layer, and a groove is provided on the inner sleeve (13) to install the infrared monitoring unit (16).

4. The deformation monitoring device for tunnel support structure according to claim 3, characterized in that: The inner sleeve (13) is provided with a top-closed sliding groove (19). The contact rod (14) includes a limiting block (20) that slides with the slide groove (19) and is connected to the return spring (15), and a T-shaped rod (21) that is connected to the limiting block (20) and slides with the inner sleeve (13).

5. The deformation monitoring device for tunnel support structure according to claim 3, characterized in that: The infrared monitoring unit (16) includes multiple sets of infrared transmitters (22) and infrared receivers (23) arranged opposite each other along the height direction of the inner sleeve (13).

6. The deformation monitoring device for tunnel support structure according to claim 3, characterized in that: The outer sleeve (12) is fixedly mounted on the mounting plate (3); or The outer sleeve (12) is threaded onto the mounting plate (3).

7. A deformation monitoring device for tunnel support structures according to any one of claims 1-6, characterized in that: The mounting structure (1) includes a clamping and fixing structure (5) clamped on an adjacent I-beam, and a connecting rod (6) connected to the clamping and fixing structure (5) and the mounting plate (3).

8. The deformation monitoring device for tunnel support structure according to claim 7, characterized in that: The clamping and fixing structure (5) includes an L-shaped clamp A (8) connected to the connecting rod (6) and having a mounting hole (7), and an L-shaped clamp B (11) fixed to the L-shaped clamp A (8) by bolts (9) and nuts (10) and having a mounting hole (7).

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