Tunnel second lining inner water stop belt position detection method

Abstract

The application provides a tunnel secondary lining inner water stop belt position detection method, a plurality of first detection parts are implanted in the inside of a back-sticking water stop belt; a plurality of second detection parts are implanted in the inside of a middle-buried water stop belt; the back-sticking water stop belt and the middle-buried water stop belt are set in corresponding construction positions to pour concrete to obtain a tunnel secondary lining; a detector is arranged on the surface of the tunnel secondary lining, the detector is used for detecting the distance between each first detection part and the surface of the tunnel secondary lining and the distance between each second detection part and the surface of the tunnel secondary lining; whether the back-sticking water stop belt is moved upward or droops is determined according to the distance between each first detection part and the surface of the tunnel secondary lining; whether the middle-buried water stop belt is moved upward or droops is determined according to the distance between each second detection part and the surface of the tunnel secondary lining. The detection method in the above scheme can measure the positions of the back-sticking water stop belt and the middle-buried water stop belt simultaneously, and the test processes are all automatic devices, so that the measurement precision is higher compared with artificial sound identification and artificial measurement means.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel underground engineering, and particularly relates to a method for detecting the position of a waterstop in a tunnel secondary lining. BACKGROUND

[0002] The rubber waterstop includes a back-pasted rubber waterstop and a buried rubber waterstop, and the application positions thereof in a tunnel are at a secondary lining construction joint or a deformation joint. The back-pasted rubber waterstop is located at a peripheral position of the secondary lining joint, and the buried rubber waterstop is located at a middle position of the secondary lining joint. After the positions of the back-pasted rubber waterstop and the buried rubber waterstop are determined, the concrete is poured to obtain a tunnel secondary lining, so that the back-pasted rubber waterstop is located at an outer surface of the concrete tunnel secondary lining, and the buried rubber waterstop is located inside the concrete tunnel secondary lining. After the concrete is poured to obtain the tunnel secondary lining, the position of the waterstop needs to be ensured not to change to achieve the best waterproof effect, that is, the waterstop needs to be symmetrically distributed with the construction joint or the deformation joint as the center, and the distances of the positions of the waterstop from the surface of the tunnel secondary lining need to be kept consistent. Once a large deviation or sag of the position of the waterstop is found, the tunnel secondary lining needs to be repaired in time. At present, there are mainly two methods for detecting the position of the waterstop in engineering:

[0003] (1) Knocking detection: a hammer or the like is used to knock at both sides of the construction joint or the deformation joint, and whether the waterstop sags or not is judged by the echo generated when knocking.

[0004] (2) Drilling detection: a φ20 hole is drilled at each of both sides of the construction joint or the deformation joint, and the hole depth is to drill to the rubber waterstop. The distance between the inner wall of the secondary lining and the waterstop is measured by a ruler.

[0005] At present, both of the two detection methods have certain disadvantages. The knocking detection can only judge whether the buried rubber waterstop sags or not, and is not suitable for detecting the position of the back-pasted rubber waterstop. The drilling detection can detect the position of the buried rubber waterstop, but cannot detect the position of the back-pasted waterstop. Moreover, the above methods need the operator to have rich measurement experience and high professional level, and the measurement result is easily affected by the subjective judgment of the operator, and the accuracy is not high. SUMMARY

[0006] The present application aims to provide a method for detecting the position of a waterstop in a tunnel secondary lining to solve the problems existing in the detection of the position of the waterstop.

[0007] To this end, the present application provides a method for detecting the position of a waterstop in a tunnel secondary lining, which comprises the following steps:

[0008] The waterstop adjusting step includes: implanting a plurality of first detection parts in the back-bonding waterstop, the first detection parts being distributed along the length direction of the back-bonding waterstop, and the distance between adjacent first detection parts being less than a set value; and implanting a plurality of second detection parts in the middle-buried waterstop, the second detection parts being distributed along the length direction of the middle-buried waterstop, and the distance between adjacent second detection parts being less than a set value.

[0009] The waterstop installing step includes: setting the back-bonding waterstop and the middle-buried waterstop at corresponding construction positions, and pouring concrete to obtain a tunnel secondary lining.

[0010] The detector setting step includes: setting a detector on the surface of the tunnel secondary lining, the detector being used to detect the distance between each first detection part and the surface of the tunnel secondary lining and the distance between each second detection part and the surface of the tunnel secondary lining.

[0011] The position detecting step includes: determining whether the back-bonding waterstop is moved upward or sagged according to the distance between each first detection part and the surface of the tunnel secondary lining; and determining whether the middle-buried waterstop is moved upward or sagged according to the distance between each second detection part and the surface of the tunnel secondary lining.

[0012] Optionally, in the waterstop adjusting step of the tunnel secondary lining waterstop position detecting method, the first detection parts include a plurality of pairs, each pair of first detection parts being symmetrically arranged on both sides of the back-bonding waterstop center line; and the second detection parts include a plurality of pairs, each pair of second detection parts being symmetrically arranged on both sides of the middle-buried waterstop center line.

[0013] In the detector setting step, the detector is further used to detect the distance between each first detection part and the middle gap of the tunnel secondary lining and the distance between each second detection part and the middle gap of the tunnel secondary lining.

[0014] In the position detecting step, the position of the back-bonding waterstop is determined according to the distance between each pair of first detection parts and the middle gap of the tunnel secondary lining; and the position of the middle-buried waterstop is determined according to the distance between each pair of second detection parts and the middle gap of the tunnel secondary lining.

[0015] Optionally, in the waterstop adjusting step of the tunnel secondary lining waterstop position detecting method,

[0016] The distance between each pair of first detection parts is 250mm-280mm; and the distance between adjacent first detection parts on the same side of the back-bonding waterstop is 180mm-210mm.

[0017] The distance between each pair of the second detection parts is 250-280 mm; the distance between the adjacent two second detection parts on the same side of the embedded water stop belt is 180-210 mm.

[0018] Optionally, in the tunnel second lining inner water stop belt position detection method, in the detector setting step:

[0019] The detector surface comprises a plurality of detection units, and the plurality of detection units are arranged on the same straight line.

[0020] Each detection unit comprises a signal emitting module, a signal receiving module and a calculation module.

[0021] The signal emitting module emits a first frequency signal to the direction of the back-sticking water stop belt, the first frequency signal is suitable for being received by the first detection part; the signal receiving module receives a first response signal fed back by the first detection part in response to the first frequency signal; and the calculation module determines the distance between the first detection part and the tunnel second lining surface according to the emission time of the first frequency signal, the reception time of the first response signal, the frequency of the first frequency signal and the frequency of the first response signal.

[0022] Optionally, in the tunnel second lining inner water stop belt position detection method, in the detector setting step:

[0023] The signal emitting module emits a second frequency signal to the direction of the embedded water stop belt, the second frequency signal is suitable for being received by the second detection part; the signal receiving module receives a second response signal fed back by the second detection part in response to the second frequency signal; and the calculation module determines the distance between the second detection part and the tunnel second lining surface according to the emission time of the second frequency signal, the reception time of the second response signal, the frequency of the second frequency signal and the frequency of the second response signal.

[0024] Optionally, in the tunnel second lining inner water stop belt position detection method, in the detector setting step:

[0025] The signal emitting module is configured to emit signals only in the direction perpendicular to the detector surface; and the signal receiving module is configured to receive response signals only in the direction perpendicular to the detector surface.

[0026] The distance between the detection unit receiving the first response signal and the gap in the tunnel second lining is taken as the distance between the first detection part sending the first response signal and the gap in the tunnel second lining; and the distance between the detection unit receiving the second response signal and the gap in the tunnel second lining is taken as the distance between the second detection part sending the second response signal and the gap in the tunnel second lining.

[0027] Optionally, in the tunnel second lining inner waterstop belt position detection method, the detector setting step further comprises a step of setting a sliding wheel.

[0028] The sliding wheel is arranged on the bottom surface of the detector, and the sliding wheel comprises four sliding wheels which are distributed at four corners of the bottom surface of the detector.

[0029] Optionally, in the tunnel second lining inner waterstop belt position detection method, the detector setting step further comprises a step of setting a sliding assembly.

[0030] The sliding assembly comprises a sliding rail, a detector support and a pulley. The sliding rail is two sliding rails which are arranged in parallel and located on the surface of the tunnel second lining. The distance between the sliding rail and the surface of the tunnel second lining is consistent. The detector support is arranged between the two sliding rails and used for fixing the detector. The two ends of the detector support are connected with a pulley. Each pulley is slidably embedded in a sliding rail. The distance between the detector and the surface of the tunnel second lining is consistent during the movement of the detector along the sliding rail driven by the pulley.

[0031] Optionally, in the tunnel second lining inner waterstop belt position detection method, the detector setting step further comprises a step of setting a sliding assembly.

[0032] The first detection part and the second detection part are both electronic tags. The first frequency signal and the second frequency signal are both radio frequency signals.

[0033] Optionally, in the tunnel second lining inner waterstop belt position detection method, the position detection step further comprises a step of setting a sliding assembly.

[0034] If the difference between the distances between two first detection parts and the surface of the tunnel second lining exceeds an upper limit value, it is determined that the position of the back-sticking waterstop belt does not meet the requirements.

[0035] If the difference between the distances between two second detection parts and the surface of the tunnel second lining exceeds an upper limit value, it is determined that the position of the embedded waterstop belt does not meet the requirements.

[0036] Optionally, in the tunnel second lining inner waterstop belt position detection method, the position detection step further comprises a step of setting a sliding assembly.

[0037] If the difference between the distances between a pair of first detection parts and the gap in the tunnel second lining exceeds an upper limit value, it is determined that the position of the back-sticking waterstop belt does not meet the requirements.

[0038] If the difference between the distances between a pair of second detection parts and the gap in the tunnel second lining exceeds an upper limit value, it is determined that the position of the embedded waterstop belt does not meet the requirements.

[0039] Compared with the prior art, the above technical solutions of the present application have at least the following beneficial effects:

[0040] The tunnel secondary lining inner waterstop position detection method provided by the present application improves the structure of the back-pasted waterstop and the middle-buried waterstop, sets a detection part in the waterstop, and configures a detector cooperating with the detection part, so that the distance between each detection part and the tunnel secondary lining can be accurately detected to determine the position of the waterstop. The detection method in the above scheme can measure the positions of the back-pasted waterstop and the middle-buried waterstop at the same time, and since the testing process is performed by using automatic devices, the measurement precision is higher than that of artificial sound identification and artificial measurement means. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 The flow chart of the tunnel secondary lining inner waterstop position detection method according to an embodiment of the present application is shown in the figure.

[0042] Fig. 2(a) is a sectional view of the back-pasted waterstop.

[0043] Fig. 2(b) is a sectional view of the middle-buried waterstop.

[0044] Figure 3 The planar structure of the back-pasted waterstop or the middle-buried waterstop is shown in the figure.

[0045] Figure 4 The setting mode of the detector, the back-pasted waterstop and the middle-buried waterstop according to an embodiment of the present application is shown in the figure.

[0046] Figure 5 The structure of the detector including a plurality of side-by-side detection units according to an embodiment of the present application is shown in the figure.

[0047] Figure 6 The structure of the detector provided with a sliding wheel according to an embodiment of the present application is shown in the figure.

[0048] Figure 7 The structure of the detector provided with a sliding assembly on the surface of the tunnel secondary lining according to an embodiment of the present application is shown in the figure. DETAILED DESCRIPTION

[0049] The technical solutions in the present application will be described below with reference to the accompanying drawings. In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of the simplified description of the present application, and do not indicate or imply that the devices or components referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0050] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] Embodiment 1

[0052] The embodiment of the present application provides a tunnel second lining inner water stop belt position detection method, as shown in Figure 1 The method comprises the following steps:

[0053] S100: Water stop belt adjustment step: as shown in FIG. 2(a), FIG. 2(b) and Figure 3As shown, a plurality of first detection parts 101 are implanted inside the back-sticking waterstop 100, and the plurality of first detection parts 101 are distributed along the length direction of the back-sticking waterstop 100, and the distance between adjacent first detection parts 101 is less than a set value; a plurality of second detection parts 201 are implanted inside the embedded waterstop 200, and the plurality of second detection parts 201 are distributed along the length direction of the embedded waterstop 200, and the distance between adjacent second detection parts 201 is less than a set value. As shown, the back-sticking waterstop 100 and the embedded waterstop 200 are in a belt structure, and are connected at the head and tail to form a circle after being arranged at the construction position. The first detection parts 101 and the second detection parts 201 can be uniformly arranged along the length direction of the waterstop. Generally, the length direction of the waterstop is about 24 meters, and the width direction of the waterstop is about 0.3 meters, and the number and position of the first detection parts 101 and the second detection parts 201 can be set according to the construction requirements. Preferably, the distance between two adjacent first detection parts 101 is 180-210 mm, and 200 mm can be selected, so that the first detection parts 101 at the head and tail of the back-sticking waterstop 100 can be separated by 200 mm after the back-sticking waterstop 100 forms a circular structure, and the distance between the first detection parts 101 at the head and tail and the two end portions of the back-sticking waterstop 100 is 100 mm. Preferably, the distance between two adjacent second detection parts 201 is 180-210 mm, and 200 mm can be selected, so that the second detection parts 201 at the head and tail of the embedded waterstop 200 can be separated by 200 mm after the embedded waterstop 200 forms a circular structure, and the distance between the second detection parts 201 at the head and tail and the two end portions of the embedded waterstop 200 is 100 mm. The distance between each pair of first detection parts 101 is 250-280 mm, and preferably 270 mm, and the distance between each pair of second detection parts 201 is 250-280 mm, and preferably 270 mm.

[0054] S200: waterstop installation step: after the back-sticking waterstop 100 and the embedded waterstop 200 are arranged at the corresponding construction position, the concrete is poured to obtain a tunnel secondary lining; as shown in FIG. 2(a), FIG. 2(b) and Figure 3 When the back-sticking waterstop 100 and the embedded waterstop 200 are located in the tunnel secondary lining, the gap 400 of the tunnel secondary lining is located at the middle position between the two waterstops. Therefore, as shown in Figure 3The first detection unit 101 comprises multiple pairs, each pair of which is symmetrically positioned on both sides of the back-adhesive waterstop 100, about the center line of the back-adhesive waterstop 100. The second detection unit 201 comprises multiple pairs, each pair of which is symmetrically positioned on both sides of the embedded waterstop 200, about the center line of the embedded waterstop 200. During installation, the center lines of the back-adhesive waterstop 100 and the embedded waterstop 200 can be aligned with the gaps in the tunnel lining. This ensures that after the back-adhesive waterstop 100 and the embedded waterstop 200 are fixed, they are symmetrically positioned around the gaps in the tunnel lining, thus achieving a better waterproofing effect.

[0055] S300: Detector setup steps: as follows Figure 4 As shown, a detector 301 is installed on the tunnel secondary lining surface 300. The detector 301 is used to detect the distance between each of the first detection units 101 and the tunnel secondary lining surface 300, and the distance between each of the second detection units 201 and the tunnel secondary lining surface 300. For each detector 301, when it is installed on the tunnel secondary lining surface 300, the distance between the detection surface of the detector 301 and the tunnel secondary lining surface 300 is known. The detector 301 and the first detection unit 101, and the detector 301 and the second detection unit 201 are constrained according to a specific signal transmission and reception relationship, which can ensure that the detector 301 can transmit and receive specific signals with the first detection unit 101 and the second detection unit 201, and the distance between the first detection unit 101, the second detection unit 201 and the detector 301 can be calculated according to the signal frequency and transmission and reception time. For each detector 301, when it is set on the tunnel secondary lining surface 300, the distance between the detection surface of the detector 301 and the tunnel secondary lining surface 300 is known. Therefore, after obtaining the distance between the first detection unit 101, the second detection unit 201 and the detector 301, the distance between the first detection unit 101 and the tunnel secondary lining surface 300 and the distance between the second detection unit 201 and the tunnel secondary lining surface 300 are obtained.

[0056] S400: Position detection step: Determine whether the back-attached waterstop 100 has moved up or down based on the distance between each of the first detection parts 101 and the tunnel secondary lining surface 300; determine whether the embedded waterstop 200 has moved up or down based on the distance between each of the second detection parts 201 and the tunnel secondary lining surface 300.

[0057] Normally, if there is no upward movement or sagging at each position of the back-sticking waterstop 100 and the middle-buried waterstop 200, the distance between each first detection part 101 and the tunnel secondary lining surface 300 is equal, and the distance between each second detection part 201 and the tunnel secondary lining surface 300 is also equal. If the distance between a first detection part 101 and the tunnel secondary lining surface 300 is different from the distance between other first detection parts 101 and the tunnel secondary lining surface 300, it means that upward movement or sagging occurs at this position. If the distance becomes larger, it is considered that upward movement occurs. If the distance becomes smaller, it is considered that sagging occurs. Similarly, if the distance between a second detection part 201 and the tunnel secondary lining surface 300 is different from the distance between other second detection parts 201 and the tunnel secondary lining surface 300, it means that upward movement or sagging occurs at this position. If the distance becomes larger, it is considered that upward movement occurs. If the distance becomes smaller, it is considered that sagging occurs. Further, this step can be realized in the following way: if the difference between the distance between two first detection parts 101 and the tunnel secondary lining surface 300 exceeds an upper limit value, it is determined that the position of the back-sticking waterstop 100 does not meet the requirements; if the difference between the distance between two second detection parts 201 and the tunnel secondary lining surface 300 exceeds an upper limit value, it is determined that the position of the middle-buried waterstop 200 does not meet the requirements. As mentioned above, theoretically, the difference between the distance between each two first detection parts 101 and the tunnel secondary lining surface 300 is zero, and the difference between the distance between each two second detection parts 201 and the tunnel secondary lining surface 300 is zero, but errors caused by construction processes can not be excluded, so the difference can be allowed to be 10 mm or less. If the difference between the distance between two first detection parts 101 exceeds this value, it is considered that a problem occurs.

[0058] In the above scheme, in the step S300, the detector 301 is further used to detect the distance between each first detection part 101 and the gap 400 in the tunnel secondary lining, and the distance between each second detection part 201 and the gap 400 in the tunnel secondary lining; in the step S400, the position of the back-sticking waterstop 100 is determined according to the distance between each pair of first detection parts 101 and the gap 400 in the tunnel secondary lining, and the position of the middle-buried waterstop 200 is determined according to the distance between each pair of second detection parts 201 and the gap 400 in the tunnel secondary lining.

[0059] Specifically, as Figure 5As shown, the probe 301 surface comprises a plurality of probe units 302, and the plurality of probe units 302 are arranged on the same straight line; each probe unit 302 comprises a signal transmitting module, a signal receiving module and a calculation module. The signal transmitting module transmits radio frequency signals, and the first detection part and the second detection part can be electronic tags. The signal transmitting module transmits a first frequency signal to the direction of the back-sticking water stop belt 100, and the first frequency signal is suitable for being received by the first detection part 101; the signal receiving module receives a first response signal fed back by the first detection part 101 in response to the first frequency signal; and the calculation module determines the distance between the first detection part 101 and the tunnel second lining surface 300 according to the transmission time of the first frequency signal, the receiving time of the first response signal, the frequency of the first frequency signal and the frequency of the first response signal. The signal transmitting module is also used for transmitting a second frequency signal to the direction of the embedded water stop belt 200, and the second frequency signal is suitable for being received by the second detection part 201; the signal receiving module receives a second response signal fed back by the second detection part 201 in response to the second frequency signal; and the calculation module determines the distance between the second detection part 201 and the tunnel second lining surface 300 according to the transmission time of the second frequency signal, the receiving time of the second response signal, the frequency of the second frequency signal and the frequency of the second response signal.

[0060] According to the frequency of the signal, the propagation speed of the signal can be obtained, and according to the propagation speed and the propagation time, the transmission distance of the signal can be obtained, and the transmission distance of the signal is from the signal transmitting module to the first detection part 101 / second detection part 201 and from the first detection part 101 / second detection part 201 to the signal receiving module, so the distance between the probe 301 detection surface and the first detection part 101 / second detection part 201 can be obtained according to the above information, and the distance between the probe 301 and the tunnel second lining surface 300 is equal and known at any position, so the distance between the first detection part 101 / second detection part 201 and the tunnel second lining surface 300 can be obtained after the distance between the probe 301 detection surface and the first detection part 101 / second detection part 201 is obtained.

[0061] For the detector 301, the best way is to make it only detect the signal of the first detection part 101 or the second detection part 201 in the direction perpendicular to the detection surface thereof. However, even if the ideal case cannot be achieved, the signal emitting module and the signal receiving module in the detector 301 correspond to a signal emitting area and a signal receiving area of a sector surface. Since the response time of different first detection parts 101 and different second detection parts 201 to different detection units 302 is different, the distance of the same first detection part 101 to different detection units 302, the distance of the same second detection part 201 to different detection units 302 can also be obtained, so that two detection units 302 and one first detection part 101 form a triangle, and two detection units 302 and one second detection part 201 form a triangle, and the distance of the first detection part 101 to the detection surface and the distance of the second detection part 201 to the detection surface can be obtained according to the trigonometric function relationship.

[0062] The above scheme provided by the embodiment improves the structure of the back-pasted waterstop 100 and the middle-buried waterstop 200, sets the detection part in the waterstop, and configures the detector cooperating with the detection part, so that the distance between each detection part and the tunnel secondary lining can be accurately detected, and the position of the waterstop is determined. The detection method in the above scheme can measure the positions of the back-pasted waterstop and the middle-buried waterstop at the same time, and since the test process is all automatic, the measurement accuracy is higher than that of artificial sound identification and artificial measurement means.

[0063] Embodiment 2

[0064] The tunnel secondary lining waterstop position detection method provided by the embodiment further includes the step of setting the sliding wheel 303 in the setting step of the detector 301: as shown in Figure 6 The sliding wheel 303 is arranged on the bottom surface of the detector 301, and the sliding wheel 303 includes four sliding wheels 303 distributed at the four corners of the bottom surface of the detector 301.

[0065] As another implementable way, the detector 301 can be moved by setting a sliding assembly, as shown in Figure 7As shown, the sliding assembly comprises slide rails 500, a detector support 502 and pulleys 503; the slide rails 500 are two, and the two slide rails 500 are arranged in parallel and are both located on the tunnel secondary lining surface 300, the distance between the slide rails 500 and the tunnel secondary lining surface 300 is consistent; the detector support 502 is arranged between the two slide rails 500 and is used for fixing the detector 301; the two ends of the detector support 502 are both connected with a pulley 503; each pulley 503 is slidingly embedded in a slide rail 500; the detector 301 is directly arranged on the detector support 502, and in the process of moving along the slide rail 500 under the driving of the pulley 503, the distance between the detector 301 and the tunnel secondary lining surface 300 is consistent. The figure shows a cross-sectional view of a small distance of the sliding assembly, and in fact, the sliding assembly is a circle arranged along the tunnel secondary lining surface 300, and the distance between the slide rail 500 and the tunnel secondary lining surface 300 at each position is equal.

[0066] Through the above scheme, the detector 301 can be conveniently moved, and the detector 301 can be randomly moved along the surface of the tunnel secondary lining, so as to realize the detection of the positions of the first detection part 101 and the second detection part 102 along the gap.

[0067] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for detecting the location of the waterstop strip inside the secondary lining of a tunnel, characterized in that, Includes the following steps: Waterstop adjustment steps: Multiple first detection parts are set inside the back-adhesive waterstop, and the multiple first detection parts are distributed along the length direction of the back-adhesive waterstop, with the distance between adjacent first detection parts being less than a set value; Multiple second detection parts are set inside the embedded waterstop, and the multiple second detection parts are distributed along the length direction of the embedded waterstop, with the distance between adjacent second detection parts being less than a set value. Waterstop installation steps: After setting the back-attached waterstop and the embedded waterstop at the corresponding construction positions, pour concrete to obtain the tunnel secondary lining; Detector setup steps: A detector is set on the surface of the tunnel lining. The detector is used to detect the distance between each first detection unit and the surface of the tunnel lining, and the distance between each second detection unit and the surface of the tunnel lining. The detector surface includes multiple detection units, and each detection unit includes a signal transmitting module, a signal receiving module, and a computing module. The signal transmitting module transmits radio frequency signals, and the first detection unit and the second detection unit are electronic tags. Position detection steps: Determine whether the back-attached waterstop has moved up or down based on the distance between each of the first detection parts and the surface of the tunnel secondary lining; determine whether the embedded waterstop has moved up or down based on the distance between each of the second detection parts and the surface of the tunnel secondary lining.

2. The method for detecting the location of the waterstop strip inside the secondary lining of a tunnel according to claim 1, characterized in that: In the waterstop adjustment step: the first detection unit includes multiple pairs, and each pair of the first detection units is symmetrically arranged on both sides of the back-adhesive waterstop with respect to the center line of the back-adhesive waterstop; the second detection unit includes multiple pairs, and each pair of the second detection units is symmetrically arranged on both sides of the embedded waterstop with respect to the center line of the embedded waterstop. In the detector setup step: the detector is also used to detect the distance between each of the first detection parts and the gap in the tunnel secondary lining, and the distance between each of the second detection parts and the gap in the tunnel secondary lining; In the position detection step: the position of the back-attached waterstop is determined based on the distance between each pair of the first detection parts and the gap in the tunnel secondary lining; the position of the embedded waterstop is determined based on the distance between each pair of the second detection parts and the gap in the tunnel secondary lining.

3. The method for detecting the location of the waterstop strip inside the secondary lining of a tunnel according to claim 2, characterized in that, In the waterstop adjustment process: The distance between each pair of first detection units is 250mm-280mm; the distance between two adjacent first detection units located on the same side of the back-adhesive waterstop is 180mm-210mm. The distance between each pair of second detection units is 250mm-280mm; the distance between two adjacent second detection units located on the same side of the embedded waterstop is 180mm-210mm.

4. The method for detecting the location of the waterstop strip inside the secondary lining of a tunnel according to claim 1, characterized in that, In the detector setup procedure: Multiple detection units are arranged on the same straight line; The signal transmitting module transmits a first frequency signal toward the back-adhesive waterstop, the first frequency signal being adapted to be received by the first detection unit; the signal receiving module receives a first response signal fed back by the first detection unit in response to the first frequency signal. The calculation module determines the distance between the first detection unit and the tunnel lining surface based on the transmission time of the first frequency signal, the reception time of the first response signal, the frequency of the first frequency signal, and the frequency of the first response signal.

5. The method for detecting the location of the waterstop strip inside the secondary lining of a tunnel according to claim 4, characterized in that, In the detector setup procedure: The signal transmitting module transmits a second frequency signal toward the embedded waterstop, and the second frequency signal is adapted to be received by the second detection unit; the signal receiving module receives a second response signal fed back by the second detection unit in response to the second frequency signal; the calculation module determines the distance between the second detection unit and the tunnel secondary lining surface based on the transmission time of the second frequency signal, the reception time of the second response signal, the frequency of the second frequency signal, and the frequency of the second response signal.

6. The method for detecting the location of the waterstop strip inside the secondary lining of a tunnel according to claim 5, characterized in that, In the detector setup procedure: The signal transmitting module is configured to transmit signals only in a direction perpendicular to the detector surface; the signal receiving module is configured to receive response signals only in a direction perpendicular to the detector surface. The distance between the detection unit that receives the first response signal and the gap in the tunnel secondary lining is taken as the distance between the first detection unit that sends the first response signal and the gap in the tunnel secondary lining; the distance between the detection unit that receives the second response signal and the gap in the tunnel secondary lining is taken as the distance between the second detection unit that sends the second response signal and the gap in the tunnel secondary lining.

7. The method for detecting the location of the waterstop strip inside the secondary lining of a tunnel according to claim 4, characterized in that, The detector setup process also includes setting up the pulleys: The sliding wheels are disposed on the bottom surface of the detector, and there are four sliding wheels distributed at the four corners of the bottom surface of the detector.

8. The method for detecting the location of the waterstop strip inside the secondary lining of a tunnel according to claim 4, characterized in that, The detector setup process also includes a step for setting up the sliding component: The sliding assembly includes a slide rail, a detector bracket, and pulleys; there are two slide rails, which are arranged in parallel and both located on the surface of the tunnel secondary lining, and the distance between the slide rails and the surface of the tunnel secondary lining remains consistent; the detector bracket is disposed between the two slide rails and is used to fix the detector; a pulley is connected to each end of the detector bracket; each pulley is slidably embedded in a slide rail; as the detector moves along the slide rail under the drive of the pulleys, the distance between the detector and the surface of the tunnel secondary lining remains consistent.

9. The method for detecting the location of the waterstop strip inside the secondary lining of a tunnel according to any one of claims 2-8, characterized in that, In the position detection step: If the difference between the distances between two of the first detection units and the surface of the tunnel lining exceeds the upper limit, it is determined that the position of the back-attached waterstop does not meet the requirements. If the difference between the distances between two of the second detection units and the surface of the tunnel lining exceeds the upper limit, it is determined that the position of the embedded waterstop does not meet the requirements.

10. The method for detecting the location of the waterstop strip inside the secondary lining of a tunnel according to claim 9, characterized in that, In the position detection step: If the distance difference between a pair of first detection units and the gap in the tunnel secondary lining exceeds the upper limit, it is determined that the position of the back-attached waterstop does not meet the requirements. If the distance difference between a pair of second detection units and the gap in the tunnel lining exceeds the upper limit, the position of the embedded waterstop is determined to be unsatisfactory.

Images