Tunnel advanced geological forecast seismic wave detector fixing device

Abstract

The utility model discloses a tunnel advanced geological forecast seismic wave detector fixing device which comprises a fixing shell, the fixing shell is of a cuboid shell structure with one face open, a groove space is formed in the fixing shell and matched with a seismic wave detector, and the seismic wave detector is embedded into the fixing shell and tightly attached to the groove space. The contact surface of the detector faces the opening surface; a fixing hole is formed in the side edge of the fixing shell, and the depth of the fixing hole is the same as the thickness of the fixing shell. The steel nails fix the fixed housing on the tunnel side wall through the fixing holes, and the seismic wave detector in the fixed housing is directly attached to and compressed on the tunnel side wall. The seismic wave detector is embedded into the fixing device, the fixing device is anchored on the tunnel side wall, the seismic wave detector in the fixing device is directly attached to and pressed on the tunnel side wall, installation of the device is not affected by the environment, the device is convenient to dismantle and use repeatedly, and quality and accuracy of data acquisition are effectively guaranteed.

Description

Technical Field

[0001] The utility model is designed in the technical field of tunnel seismic wave detection, and specifically relates to a tunnel advanced geological prediction seismic wave geophone fixing device. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] With the vigorous development of tunnel construction, a large number of highway and railway tunnels are being built rapidly. However, in the process of tunnel construction, complex engineering geological conditions are often encountered, among which unfavorable geological structures such as large deformation of soft rock, fault fracture zone and weathered rock are particularly prominent. If the unfavorable geological conditions in front of the tunnel are not detected in advance, landslides, machine jams, mud and water surges, and even casualties are likely to occur, seriously affecting the construction progress and personnel safety. Therefore, it is particularly important to detect the unfavorable geological structures in front of the tunnel face in advance.

[0004] At present, the tunnel seismic wave method is one of the common means to detect adverse geological structures such as fault fracture zones in front of the tunnel. When using this method for advanced geological prediction, it is necessary to place seismic wave detectors on the left and right walls of the tunnel to perform geological prediction through seismic wave detection. The existing method is often to use quick-drying cement and other materials to stick the seismic wave detectors on the tunnel side walls. However, this fixing method usually has the following problems:

[0005] (1) When there is a water source such as a river or lake upstream of the tunnel, it may cause water seepage in the tunnel wall. When there is water seepage in the tunnel wall or even linear water flow, it will make it difficult to stick and fix the seismic wave detector, which will take a long time and affect the detection efficiency;

[0006] (2) The space between the seismic wave detector and the tunnel surrounding rock is filled with quick-drying cement and other media, which prevents the detector from directly contacting the tunnel surrounding rock, thus affecting the quality of data collection and the accuracy of the detection results;

[0007] (3) After data collection is completed, the quick-drying cement has already solidified, and the seismic wave detector is firmly attached to the tunnel surrounding rock, making it difficult to remove it directly from the tunnel side wall. Forced removal may also cause damage to the seismic wave detector, resulting in unnecessary economic losses. Utility Model Content

[0008] In view of the above-mentioned problems and defects existing in the prior art, the utility model provides a tunnel advanced geological prediction seismic wave detector fixing device, in which the seismic wave detector is embedded in the fixing device. In the process of using the tunnel seismic wave method for tunnel advanced geological prediction, the fixing device is anchored to the tunnel side wall so that the seismic wave detector inside it is directly attached to and pressed against the tunnel side wall. On the one hand, the fixing device can quickly and efficiently install the seismic wave detector without being affected by the environment, and the device is easy to quickly dismantle and reuse without causing damage to the detector. On the other hand, the detector directly contacts and fits the tunnel side wall, thereby ensuring the quality and accuracy of data collection.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A device for fixing a seismic wave detector for advanced geological prediction in a tunnel comprises a fixed shell, wherein the fixed shell is a rectangular shell structure with one side open, a groove space is formed inside the fixed shell, the groove space matches the seismic wave detector, the seismic wave detector is embedded in the fixed shell and fits tightly in the groove space, and the contact surface of the seismic wave detector faces the open surface; a fixing hole is provided on the side of the fixed shell, and the hole depth of the fixing hole is the same as the thickness of the fixed shell; a steel nail fixes the fixed shell to the tunnel side wall through the fixing hole, and the seismic wave detector in the fixed shell is directly attached to and pressed against the tunnel side wall.

[0011] According to a further technical solution, the depth of the groove space is less than the thickness of the seismic wave detector. This arrangement ensures that the seismic wave detector can be pressed against the tunnel side wall during use.

[0012] According to a further technical solution, the seismic wave detector is a rectangular parallelepiped device.

[0013] According to a further technical solution, the length and width of the groove space match the length and width of the seismic wave detector, and the seismic wave detector is embedded in and fits tightly into the groove space.

[0014] Through the above matching setting, the seismic wave geophone can be firmly fixed in the fixed housing, thus avoiding the problem of inaccurate data collection caused by shaking of the geophone.

[0015] According to a further technical solution, a slot is provided on the side of the fixed housing, and the tail cable of the seismic wave detector passes through the slot and is electrically connected to an external detection device.

[0016] According to a further technical solution, the size of the notch matches the size of the cable connection at the tail end of the seismic wave detector.

[0017] According to a further technical solution, the fixing holes are symmetrically arranged on two side edges of the fixing shell and are located on two sides of the notch.

[0018] According to a further technical solution, the diameter of the fixing hole is smaller than the diameter of the steel nail.

[0019] By setting the above-mentioned fixing holes, the steel nails can be stuck in the fixing holes, so that the fixing shell is firmly fixed on the tunnel side wall.

[0020] In a further technical solution, the length of the steel nail is greater than the sum of the fixing hole depth and the steel nail anchoring depth, and the steel nail anchoring depth is not less than a set value. Through this setting, it is ensured that the fixing device can firmly fix the seismic wave detector on the tunnel side wall, and after anchoring, a certain length is reserved between the top of the steel nail and the fixing shell, which is convenient for the device to be disassembled.

[0021] According to a further technical solution, the fixed shell is made of an integrated PVC material, and the steel nails are made of high-strength steel.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The utility model provides a tunnel advanced geological prediction seismic wave detector fixing device, the device comprises a fixed shell, the seismic wave detector is embedded in the groove space inside the fixed shell, and the seismic wave detector is closely fitted with the groove space; in the process of using the tunnel seismic wave method to perform tunnel advanced geological prediction, the fixed shell is anchored on the tunnel side wall by passing a steel nail through a fixing hole arranged on the fixed shell, so that the seismic wave detector inside is directly attached to and pressed against the tunnel side wall; on the one hand, the fixing device can quickly and efficiently install the seismic wave detector without being affected by the environment, and the device is fixed by anchoring, which is convenient for rapid removal and reuse, and will not cause damage to the detector; on the other hand, the seismic wave detector can directly contact and fit the tunnel side wall, thereby ensuring the quality and accuracy of data acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 It is a schematic diagram of the combined structure of the seismic wave detector embedded in the fixed housing in the utility model;

[0026] Figure 2 It is a structural schematic diagram of the seismic wave detector in the utility model;

[0027] Figure 3 It is a structural schematic diagram of a fixed housing in the utility model;

[0028] Figure 4It is a schematic diagram of fixing a seismic wave detector to a tunnel side wall by using a fixing device in the utility model.

[0029] Among them, 1. seismic wave detector; 2. fixed shell; 3. tail cable of seismic wave detector; 4. groove space; 5. notch; 6. steel nails; 7. fixing holes; 8. tunnel side wall. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] like Figure 3 As shown, the utility model proposes a tunnel advanced geological prediction seismic wave detector fixing device, including a fixed shell 2, the fixed shell 2 is a rectangular shell structure with one side open, and a groove space 4 is formed inside the fixed shell 2. The groove space 4 matches the seismic wave detector 1. The seismic wave detector 1 is as shown in FIG. Figure 2 As shown, the seismic wave detector is a rectangular parallelepiped structure device, the seismic wave detector 1 is embedded in the fixed housing 2 and fits tightly into the groove space 4, and the contact surface of the seismic wave detector faces the opening surface, as shown in FIG. Figure 1 As shown; the side of the fixed housing 2 is provided with a fixing hole 7, the depth of the fixing hole 7 is the same as the thickness of the fixed housing 2; the steel nail 6 fixes the fixed housing 2 to the tunnel side wall 8 through the fixing hole 7, and the seismic wave detector 1 in the fixed housing 2 is directly attached and pressed against the tunnel side wall 8, as shown Figure 4 Preferably, considering that the surrounding rock of a tunnel can be graded according to its hardness, and for surrounding rock with a higher hardness grade, it may be difficult to hammer the steel nail into the surrounding rock, so the fixing device proposed by the utility model is actually more suitable for soft rock tunnel scenarios.

[0033] Furthermore, the above-mentioned groove space 4 is matched with the seismic wave detector 1, that is: the length and width of the groove space 4 match the length and width (or size) of the seismic wave detector 1, the seismic wave detector 1 can be embedded in and fit tightly into the groove space 4, and at the same time, the depth of the groove space 4 is less than or slightly less than the thickness of the seismic wave detector 1. Through this setting, the seismic wave detector can be firmly fixed in the fixed shell to avoid the problem of inaccurate data collection caused by the shaking of the detector, and it is ensured that the seismic wave detector can be pressed against the tunnel side wall during use to ensure the accuracy of the detection.

[0034] Furthermore, a slot 5 is provided on the side of the fixed housing 2, and the seismic wave detector tail cable 3 passes through the slot 5 and is electrically connected to the external detection equipment. Moreover, the size of the slot 5 matches the size of the connection of the seismic wave detector tail cable 3.

[0035] In addition, the side of the fixed housing 2 is provided with a plurality of fixing holes 7, and the fixed housing 2 is further stabilized by the plurality of fixing holes 7. Preferably, two fixing holes 7 are provided, and the fixing holes 7 are symmetrically arranged on both sides of the fixed housing and located on both sides of the notch 5. The diameter of the fixing hole 7 is smaller than the diameter of the steel nail 6, so that the steel nail can be stuck in the fixing hole, thereby stabilizing the fixed housing on the tunnel side wall.

[0036] Furthermore, the length of the steel nail 6 is greater than the hole depth of the fixing hole 7 (i.e., greater than the thickness of the fixing shell 2), and the anchoring depth of the steel nail 6 is not less than a set value. Preferably, the set value is 3 cm. Furthermore, the length of the steel nail 6 is greater than the sum of the hole depth of the fixing hole 7 (i.e., the thickness of the fixing shell 2) and the anchoring depth of the steel nail. For example, in the present utility model, the length of the steel nail 6 is about 4 cm longer than the thickness of the fixing shell 2, and the anchoring depth is ensured to reach the set value of 3 cm during use. Through this setting, it is ensured that the fixing device can firmly fix the seismic wave detector on the side wall of the tunnel, and after anchoring, a certain length is reserved between the top of the steel nail and the fixing shell to facilitate the disassembly of the device.

[0037] In addition, the fixed shell is made of an integrated PVC material, which has high strength and certain plasticity, facilitating the manufacture of the fixed shell; the steel nails are made of high-strength steel, have good rigidity and strength, and can be anchored in the tunnel side walls.

[0038] The specific working process of the utility model is as follows:

[0039] Place and embed the seismic wave detector 1 in the groove space 4 of the fixed housing 2, with the contact surface of the seismic wave detector 1 that contacts the surrounding rock facing outwards;

[0040] The assembled device is placed in advance at a set position on the tunnel side wall according to detection requirements;

[0041] Two steel nails 6 are passed through the fixing holes 7 on the fixing shell and hammered into the tunnel side wall 8 to fix the seismic wave detector 1; wherein the length of the steel nails is greater than the sum of the thickness of the fixing shell and the anchoring depth. For example, if a steel nail 6 is 4 cm longer than the thickness of the fixing shell, when the distance between the top of the steel nail 6 and the fixing shell is less than or equal to 1 cm, it is considered that the anchoring depth has reached the set value of 3 cm, and the anchoring is considered to be completed at this time;

[0042] After the inspection is completed, the steel nail 6 is removed using a claw hammer to complete the disassembly of the fixing device.

[0043] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A tunnel advanced geological prediction seismic wave detector fixing device, characterized in that: It includes a fixed shell, which is a rectangular shell structure with an open side. A groove space is formed inside the fixed shell, the groove space matches the seismic wave detector, the seismic wave detector is embedded in the fixed shell and fits tightly in the groove space, and the contact surface of the seismic wave detector faces the open surface; a fixing hole is provided on the side of the fixed shell, and the hole depth of the fixing hole is the same as the thickness of the fixed shell; steel nails are used to fix the fixed shell to the tunnel side wall through the fixing hole, and the seismic wave detector in the fixed shell is directly attached to and pressed against the tunnel side wall.

2. The tunnel advanced geological prediction seismic wave detector fixing device as claimed in claim 1 is characterized in that: The depth of the groove space is less than the thickness of the seismic wave detector.

3. The tunnel advanced geological prediction seismic wave detector fixing device as claimed in claim 1 is characterized in that: The seismic wave detector is a rectangular parallelepiped structure device.

4. The tunnel advanced geological prediction seismic wave detector fixing device as claimed in claim 3 is characterized in that: The length and width of the groove space match the length and width of the seismic wave detector, and the seismic wave detector is embedded in and fits tightly into the groove space.

5. The tunnel advanced geological prediction seismic wave geophone fixing device according to claim 1 is characterized in that: A notch is provided on the side of the fixed shell, and the tail cable of the seismic wave detector passes through the notch and is electrically connected to the external detection equipment.

6. The device for fixing the seismic wave detector for advanced geological prediction in a tunnel as claimed in claim 5, characterized in that: The size of the notch matches the size of the cable connection at the tail end of the seismic wave detector.

7. The device for fixing the seismic wave detector for advanced geological prediction in a tunnel as claimed in claim 5 is characterized in that: The fixing holes are symmetrically arranged on two side edges of the fixing shell and are located on two sides of the notch.

8. The device for fixing the seismic wave detector for advanced geological prediction in a tunnel as claimed in claim 1 is characterized in that: The diameter of the fixing hole is smaller than the diameter of the steel nail.

9. The device for fixing the seismic wave detector for advanced geological prediction in a tunnel as claimed in claim 1, characterized in that: The length of the steel nail is greater than the sum of the depth of the fixing hole and the anchoring depth of the steel nail, and the anchoring depth of the steel nail is not less than a set value.

10. The tunnel advanced geological prediction seismic wave detector fixing device according to claim 1, characterized in that: The fixed shell is made of PVC material in an integrated manner, and the steel nails are made of high-strength steel.

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