Tunnel construction drainage blind pipe structure

Abstract

The application relates to a tunnel construction drainage blind pipe structure and belongs to the technical field of tunnel drainage. The tunnel construction drainage blind pipe structure comprises a drainage blind pipe and a fixing assembly. The fixing assembly comprises a sleeve body, a nail body, an elastic wing cavity and a connecting component. The sleeve body is inserted into a mounting hole in the inner wall of a tunnel, the outer peripheral wall of the sleeve body is provided with a notch through groove in the axial direction of the sleeve body, and the inner wall of the notch through groove is provided with a first through hole. The nail body is penetrated into the sleeve body, the nail body is hollow inside, the side wall surface of the nail body is provided with a discharge port, the discharge port comprises a first side and a second side, and the first side is close to the head of the nail body. The elastic wing cavity comprises a first elastic wall and a second elastic wall, the first elastic wall is connected to the first side, the second elastic wall comprises a first segment and a second segment, the first segment and the second segment are detachably connected, the first segment is connected to the second side, the second segment is connected to one side of the first elastic wall away from the nail body, the elastic wing cavity is penetrated into the first through hole, and the connecting component connects the nail body and the drainage blind pipe.

Description

Technical Field

[0001] This invention belongs to the field of tunnel drainage technology, and specifically relates to a tunnel construction drainage blind pipe structure. Background Technology

[0002] In water-rich areas, tunnel construction often encounters large amounts of groundwater. If this groundwater cannot be drained in time, it can seriously affect the tunnel's construction safety and structural stability. A common drainage method involves installing blind drainage pipes at the initial support face of the tunnel. These blind drainage pipes have multiple permeable holes on their sidewalls, allowing groundwater to enter and then be guided through them to tunnel side ditches, transverse drainage pipes, or central ditches, ultimately being discharged outside the tunnel through the drainage system.

[0003] The traditional method for fixing blind drain pipes involves placing a retaining ring around the perimeter of the pipe and then securing it to the initial support surface with nails or bolts. However, in water-rich areas, the concrete mortar on the initial support surface becomes soft due to the moisture content, which reduces the reliability of the traditional fixing method and increases the risk of the blind drain pipe falling off. Summary of the Invention

[0004] The purpose of this invention is to provide a drainage blind pipe structure for tunnel construction, which can increase the fixing reliability of the drainage blind pipe.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows: This application provides a tunnel construction drainage blind pipe structure, including a drainage blind pipe and a fixing component. The fixing component is used to fix the drainage blind pipe to the inner wall of the tunnel. The fixing component includes a sleeve, a nail body, an elastic wing cavity, and a connecting component. The sleeve is inserted into an installation hole in the inner wall of the tunnel. Along the axial direction of the sleeve, a notch groove is provided on the outer peripheral wall of the sleeve, and a first through hole is provided on the inner wall of the notch groove, communicating with the interior of the sleeve. The nail body passes through the sleeve body and is used to insert into the inner wall of the tunnel. The nail body is hollow inside, and an outlet is provided on the side wall surface of the nail body. Along the axial direction of the nail body, the outlet includes a first side and a second side, with the first side close to the head of the nail body. The elastic wing cavity includes a first elastic wall and a second elastic wall. The first elastic wall is connected to a first side, and the second elastic wall includes a first segment and a second segment, which are detachably connected. The first segment is connected to a second side, and the second segment is connected to the side of the first elastic wall away from the nail body. The elastic wing cavity passes through a first through hole. The width of the first elastic wall and the width of the second elastic wall are respectively equal to the distance between the two opposite sidewalls of the notch through slot. The angle between the first elastic wall and the axis of the nail body is less than 90°. A connecting component connects the nail body and the drainage blind pipe.

[0006] In some embodiments, the connecting component includes a retaining ring, which is sleeved on the periphery of the drainage blind pipe and connected to the nail body.

[0007] In some embodiments, the connecting component further includes a threaded post, which is rotatably connected to a retaining ring and inserted into the nail body and threadedly connected to the nail body.

[0008] In some embodiments, the retaining ring is not a complete circular arc.

[0009] In some embodiments, the first segment is provided with a first curved portion, the second segment is provided with a second curved portion, the first curved portion and the second curved portion are curved in opposite directions, and the first curved portion and the second curved portion are engaged.

[0010] In some embodiments, the second curved portion bends inward toward the elastic wing cavity.

[0011] In some embodiments, the sidewall of the nail body is provided with a plurality of second through holes, which extend along the axial direction of the nail body to the tip of the nail body to divide the tip of the nail body into a multi-lobed structure.

[0012] In some embodiments, the outer wall surface of the tip of the nail body is provided with a plurality of pointed protrusions.

[0013] In some embodiments, a third through hole is provided on the inner wall of the notch groove, and the fixing component further includes a locking cylinder, which passes through the third through hole and the second through hole. The locking cylinder is flat and includes two opposing long shaft ends and an arc-shaped wall connecting the two long shaft ends. One of the two long shaft ends abuts against the side of the second through hole near the head of the nail body. A pop-out part is provided at the end of the locking cylinder near the notch groove, and the elastic part is connected to the arc-shaped wall. The pop-out part is bent and inserted into the locking cylinder.

[0014] In some embodiments, the third through hole is provided with a recess, and the outer wall surface of the long shaft end is provided with a positioning part, which is accommodated in the recess.

[0015] The present invention has the following beneficial effects:

[0016] 1. When the nail is driven into the inner wall of the tunnel, the end of the first elastic wall away from the nail abuts against the inner peripheral wall of the mounting hole and is in a bent state. The first elastic wall can prevent the nail from moving in the direction of exiting the mounting hole, reducing the risk of the nail coming out of the mounting hole and improving the fixing reliability of the drainage blind pipe.

[0017] 2. The opening and closing of the outlet can be controlled by the first elastic wall. When the nail is driven to a specified depth, the first elastic wall bends to a certain extent, and the first and second segments of the second elastic wall disconnect. At this time, an opening is formed between the first and second segments, and a curing medium is injected into the nail. The curing medium is sprayed out from the opening formed by the first and second segments, filling the gap between the sleeve and the mounting hole. This allows the curing medium to strengthen the mounting hole and improve its structural strength. At the same time, the curing medium also increases the connection strength between the sleeve, the nail, and the mounting hole, further improving the fixing reliability of the drainage blind pipe. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cross-sectional structure inside the tunnel of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the fixing component (initial state) of the present invention;

[0020] Figure 3 This is a structural schematic diagram of the fixing component (first elastic wall deformation state) of the present invention;

[0021] Figure 4 for Figure 3 Enlarged view of point A;

[0022] Figure 5 for Figure 3 Enlarged view of point B (deformation state of the cylinder);

[0023] Figure 6 This is a schematic diagram of the fit between the sleeve and the locking cylinder (deformed state of the locking cylinder) of the present invention;

[0024] Figure 7 This is a schematic diagram of the nail body of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the clamping tube (flat state) of the present invention.

[0026] Reference numerals: 1-tunnel inner wall, 2-drainage channel, 3-drainage blind pipe, 4-circumferential blind pipe, 5-longitudinal blind pipe, 6-sleeve, 7-notch through groove, 8-first through hole, 9-third through hole, 10-nail body, 11-outlet, 12-first side, 13-second side, 14-elastic wing cavity, 15-second through hole, 16-locking cylinder, 17-ejection part, 18-ring, 19-threaded column, 20-mounting hole, 21-first elastic wall, 22-second segment, 23-second bend, 24-first segment, 25-first bend, 26-recess, 27-positioning part, 28-long shaft end, 29-arc wall. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0028] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0029] This application provides a tunnel construction drainage blind pipe structure, including a drainage blind pipe 3 and a fixing component. The fixing component is used to fix the drainage blind pipe 3 to the inner wall 1 of the tunnel. The fixing component includes a sleeve 6, a nail body 10, an elastic wing cavity 14, and a connecting component. The sleeve 6 is inserted into the mounting hole 20 of the inner wall 1 of the tunnel. Along the axial direction of the sleeve 6, the outer peripheral wall of the sleeve 6 is provided with a notch groove 7, and the inner wall of the notch groove 7 is provided with a first through hole 8, which communicates with the interior of the sleeve 6. The nail body 10 passes through the sleeve 6 and is used to insert into the inner wall 1 of the tunnel. The nail body 10 is hollow inside, and the side wall surface of the nail body 10 is provided with a discharge port 11. Along the axial direction of the nail body 10, the discharge port 11 includes a first side 12 and a second side 13, with the first side 12 close to the head of the nail body 10. The elastic wing cavity 14 includes a first elastic wall 21 and a second elastic wall. The first elastic wall 21 is connected to the first side 12, and the second elastic wall includes a first segment 24 and a second segment 22, which are detachably connected. The first segment 24 is connected to the second side 13, and the second segment 22 is connected to the side of the first elastic wall 21 away from the nail body 10. The elastic wing cavity 14 passes through the first through hole 8. The width of the first elastic wall 21 and the width of the second elastic wall are respectively equal to the distance between the two opposite sidewalls of the notch through groove 7. The angle between the first elastic wall 21 and the axis of the nail body 10 is less than 90°. A connecting component connects the nail body 10 and the drainage blind pipe 3.

[0030] The drainage blind pipe 3 may include a circumferential blind pipe 4 and a longitudinal blind pipe 5. The circumferential blind pipe 4 is arranged around the circumference of the tunnel inner wall 1, and the longitudinal blind pipe 5 is arranged along the axial direction of the tunnel inner wall 1. The circumferential blind pipe 4 and the longitudinal blind pipe 5 are connected.

[0031] The surface of the drainage blind pipe 3 can be wrapped with geotextile. The geotextile can protect the drainage blind pipe 3 on the one hand, and reduce the risk of blockage of the permeable holes of the drainage blind pipe 3 on the other hand.

[0032] The tunnel inner wall 1 can refer to the initial support surface formed after the initial support of the tunnel is shotcreted.

[0033] In an embodiment where the drainage blind pipe 3 includes a circumferential blind pipe 4, the inner wall 1 of the tunnel is provided with a drainage channel 2 corresponding to the circumferential blind pipe 4. The drainage channel 2 can guide the water flow so that the seepage water can be introduced into the circumferential blind pipe 4.

[0034] Both the circumferential blind pipe 4 and the longitudinal blind pipe 5 can be fixed to the inner wall 1 of the tunnel using fixing components.

[0035] The mounting hole 20 can be formed by drilling into the inner wall 1 of the tunnel using drilling equipment.

[0036] When the sleeve 6 is inserted into the mounting hole 20, there can be an interference fit between the sleeve 6 and the mounting hole 20.

[0037] The first elastic wall 21 and the second elastic wall can be made of metal. For example, the first elastic wall 21 and the second elastic wall can be made of spring steel.

[0038] The head of the nail body 10 refers to the side of the nail body 10 away from the bottom wall of the mounting hole 20.

[0039] The nail body 10 is hollow inside, which allows the curing medium to be contained inside the nail body 10. The curing medium is initially in a liquid state, and after a period of time, the curing medium can be cured into a solid state. For example, the curing medium can be concrete.

[0040] The nail body 10 may include a tip. When the nail body 10 is inserted into the sleeve 6, the tip of the nail body 10 abuts against the bottom wall of the mounting hole 20, so that the nail body 10 can be driven into the inner wall 1 of the tunnel from the bottom wall of the mounting hole 20. Then, the drainage blind pipe 3 is connected to the nail body 10 through the connecting component, so that the drainage blind pipe 3 can be fixed.

[0041] The elastic wing cavity 14 is inserted into the first through hole 8, so that when the nail body 10 is driven into the inner wall 1 of the tunnel, the nail body 10 moves axially relative to the sleeve body 6, thereby enabling the inner wall surface of the first through hole 8 to push the elastic wing cavity 14 to rotate relative to the nail body 10.

[0042] The angle between the first elastic wall 21 and the axis of the nail body 10 is less than 90°. The first elastic wall 21 is inclined towards the side closer to the tip of the nail body 10, so that in the initial state, the elastic wing cavity 14 is inclined towards the side closer to the tip of the nail body 10. On the one hand, in the initial state, before the nail body 10 is driven into the tunnel inner wall 1, the elastic wing cavity 14 can be completely placed in the notch 7 of the sleeve 6, and the elastic wing cavity 14 will not contact the inner peripheral wall of the mounting hole 20, making it easy to put the sleeve 6 into the mounting hole 20. On the other hand, the length of the first elastic wall 21 can be increased as much as possible, so that when the nail body 10 is driven into the tunnel inner wall 1, the length of the first elastic wall 21 is sufficient to allow the first elastic wall 21 to abut against the inner peripheral wall of the mounting hole 20 when it rotates relative to the nail body 10.

[0043] When the nail 10 is driven into the inner wall 1 of the tunnel, as the nail 10 moves axially relative to the sleeve 6, the inner wall surface of the first through hole 8 first pushes the second elastic wall to rotate. The second elastic wall then pushes the first elastic wall 21 to rotate relative to the nail 10 until the end of the first elastic wall 21 away from the nail 10 abuts against the inner peripheral wall of the mounting hole 20. Subsequently, the nail 10 moves further, and the first elastic wall 21 is driven to become bent, with its inner bent side facing the port of the mounting hole 20. At this time, the first elastic wall 21 can prevent the nail 10 from moving in the direction of exiting the mounting hole 20, reducing the risk of the nail 10 coming out of the mounting hole 20 and improving the fixing reliability of the drainage blind pipe 3.

[0044] The outlet 11 is used to discharge the cured medium injected into the nail body 10. The first elastic wall 21 is connected to the first side 12, and the first segment 24 is connected to the second side 13, so that the elastic wing cavity 14 can communicate with the interior of the nail body 10 through the outlet 11.

[0045] The equipment for injecting the curing medium into the nail body 10 can be selected from existing equipment, and will not be described in detail here.

[0046] The inner wall surface of the notch groove 7 refers to the bottom surface of the notch groove 7 near the inside of the sleeve 6.

[0047] The width of the first elastic wall 21 is equal to the distance between the two opposite side walls of the notch groove 7, so that the first elastic wall 21 can abut against the two opposite side walls of the notch groove 7. Thus, when the first elastic wall 21 abuts against the inner peripheral wall of the mounting hole 20, the inner peripheral wall of the mounting hole 20, the notch groove 7 and the first elastic wall 21 can form a chamber to contain the curing medium, reducing the risk of the curing medium leaking from the port of the mounting hole 20.

[0048] In water-rich areas, the initial support surface is relatively soft, and the concrete mortar is prone to fall off, forming sand that is contained in the installation hole 20. As a result, when the sleeve 6 is inserted into the installation hole 20, the sand may block the outlet 11 of the nail body 10.

[0049] The width of the second elastic wall is equal to the distance between the two opposite side walls of the notch groove 7, so that the first elastic wall 21, the second elastic wall and the two opposite side walls of the notch groove 7 can form a cavity structure. This cavity structure covers the outlet 11 of the nail body 10, reducing the risk that the outlet 11 will be blocked by sand when the sleeve body 6 is inserted into the mounting hole 20.

[0050] The opening and closing of the outlet 11 can be controlled by the first elastic wall 21. Specifically, by appropriately setting the connection strength of the first segment 24 and the second segment 22, when the nail 10 is driven to a specified depth, the first segment 24 and the second segment 22 disconnect after the first elastic wall 21 bends to a certain extent. At this point, an opening is formed between the first segment 24 and the second segment 22. Since the nail 10 is hollow, a curing medium is injected into it. This curing medium increases the structural strength of the nail 10 and, simultaneously, sprays out from the opening formed by the first segment 24 and the second segment 22, filling the gap between the sleeve 6 and the mounting hole 20. This strengthens the mounting hole 20, improving its structural strength and reducing the risk that the drainage blind pipe 3 cannot be reliably fixed due to the low structural strength of the initial support surface. At the same time, the curing medium also increases the connection strength between the sleeve 6, the nail 10, and the mounting hole 20, further improving the reliability of the drainage blind pipe 3.

[0051] The device for driving the nail body 10 into the tunnel inner wall 1 can be selected from existing equipment, which will not be described in detail here. By determining the position of the nail body 10 relative to the sleeve 6, the depth of the nail body 10 driven into the tunnel inner wall 1 can be controlled, reducing the risk of damaging the elastic wing cavity 14 structure by driving the nail body 10 into the tunnel inner wall 1 excessively.

[0052] In some embodiments, the connecting component includes a retaining ring 18, which is sleeved on the outer periphery of the drainage blind pipe 3 and connected to the nail body 10.

[0053] The drainage blind pipe 3 can be connected to the nail body 10 by the retaining ring 18, thereby allowing the drainage blind pipe 3 to be fixed to the inner wall 1 of the tunnel.

[0054] In some embodiments, the connecting component further includes a threaded post 19, which is rotatably connected to a retaining ring 18 and is inserted into the nail body 10 and threadedly connected to the nail body 10.

[0055] The threaded post 19 serves two purposes: firstly, it connects the retaining ring 18 and the nail body 10; secondly, it compresses the curing medium. When the curing medium is injected into the nail body 10, its viscosity prevents it from immediately flowing out of the head of the nail body 10. The threaded post 19 is then screwed into the nail body 10 to seal the curing medium inside. As the length of the threaded post 19 increases, the curing medium is compressed, allowing it to be ejected from the opening formed by the first segment 24 and the second segment 22.

[0056] In some embodiments, the retaining ring 18 is not a complete circular arc.

[0057] The not-completely circular arc structure of the retaining ring 18 gives it a notch, allowing the drain blind pipe 3 to be inserted into the interior of the retaining ring 18 through the notch, making it easy to connect the drain blind pipe 3 to the retaining ring 18.

[0058] In some embodiments, the first segment 24 is provided with a first curved portion 25, and the second segment 22 is provided with a second curved portion 23. The first curved portion 25 and the second curved portion 23 have opposite bending directions and are engaged.

[0059] The first curved portion 25 and the second curved portion 23 engage, allowing the first segment 24 and the second segment 22 to be detachably connected, and allowing the first curved portion 25 and the second curved portion 23 to deform when the second elastic wall bends to a certain extent, causing the engagement structure between them to break.

[0060] In some embodiments, the second curved portion 23 bends inward toward the elastic wing cavity 14.

[0061] Correspondingly, the first curved portion 25 bends outward toward the elastic wing cavity 14.

[0062] When the curing medium is discharged, a cavity structure may be formed between the second segment 22 and the first elastic wall 21, which may cause the first elastic wall 21 to deform, reducing the reliability of the first elastic wall 21 in limiting the nail body 10.

[0063] The first curved portion 25 bends outward toward the elastic wing cavity 14, so that when the curing medium flows through the first curved portion 25, it can be subjected to a force away from the opening formed by the first segment 24 and the second segment 22, which facilitates some of the curing medium to enter between the second segment 22 and the first elastic wall 21.

[0064] The second curved portion 23 bends into the elastic wing cavity 14, so that the second curved portion 23 can limit the flow of the curing medium between the second segment 22 and the first elastic wall 21, thereby allowing some curing medium to remain between the second segment 22 and the first elastic wall 21. After the curing medium between the second segment 22 and the first elastic wall 21 is cured, the first elastic wall 21 is difficult to deform, thus improving the reliability of the first elastic wall 21 in limiting the nail body 10.

[0065] In some embodiments, the sidewall of the nail body 10 is provided with a plurality of second through holes 15, which extend along the axial direction of the nail body 10 to the tip of the nail body 10 to divide the tip of the nail body 10 into a multi-lobed structure.

[0066] The multi-lobed tip of the nail body 10 allows the curing medium inside the nail body 10 to be discharged from the tip of the nail body 10, thereby strengthening the structural strength of the tunnel inner wall 1 at the tip of the nail body 10, reducing the risk of the nail body 10 coming out of the mounting hole 20, and improving the fixing reliability of the drainage blind pipe 3.

[0067] In some embodiments, the outer wall surface of the tip of the nail body 10 is provided with a plurality of pointed protrusions.

[0068] The pointed protrusions can increase the friction between the tip of the nail body 10 and the inner wall of the tunnel 1, reduce the risk of the nail body 10 coming out of the mounting hole 20, and improve the fixing reliability of the drainage blind pipe 3.

[0069] In some embodiments, the inner wall of the notch groove 7 is provided with a third through hole 9, and the fixing assembly further includes a locking cylinder 16, which passes through the third through hole 9 and the second through hole 15. The locking cylinder 16 is flat and includes two opposing long shaft ends 28 and an arc-shaped wall 29 connecting the two long shaft ends 28. One of the two long shaft ends 28 abuts against the side of the second through hole 15 near the head of the nail body 10. A pop-out part 17 is provided at one end of the locking cylinder 16 near the notch groove 7. The elastic part is connected to the arc-shaped wall 29, and the pop-out part 17 is bent and inserted into the locking cylinder 16.

[0070] The notch groove 7 can be symmetrically arranged on both sides of the sleeve body 6. Correspondingly, in the multiple second through holes 15 of the nail body 10, two of the second through holes 15 are arranged opposite to each other, so that the two ends of the locking cylinder 16 can be respectively inserted into the corresponding second through hole 15 and third through hole 9.

[0071] The cross-section of the third through hole 9 can be circular, and the axis of the third through hole 9 can be perpendicular to the axis of the sleeve 6.

[0072] The clamping tube 16 is flat, which makes it easy to insert the clamping tube 16 into the second through hole 15.

[0073] Within the cross-section of the clamping cylinder 16, the line segment formed by the connection between the two long axis ends 28 has the longest length.

[0074] The long shaft end 28 abuts against the side of the second through hole 15 near the head of the nail body 10, so that when the nail body 10 is driven into the tunnel inner wall 1, the second through hole 15 can exert a squeezing effect on the clamping cylinder 16. Since the clamping cylinder 16 is initially flat, under the squeezing effect of the second through hole 15 and the limiting effect of the third through hole 9, the clamping cylinder 16 tends to be squeezed into a cylindrical structure, which in turn causes the parts of the nail body 10 on both sides of the clamping cylinder 16 to tend to move away from each other. When the nail body 10 is driven into the tunnel inner wall 1, under the squeezing effect of the tunnel inner wall 1, the multi-lobed structure of the tip tends to move closer to each other. At the same time, sand can also block the second through hole 15, making it impossible for the solidified medium to be discharged from the tip. Under the action of the clamping cylinder 16, the parts of the tip located on both sides of the clamping cylinder 16 can be separated, reducing the risk that the second through hole 15 will be blocked and the solidified medium will not be able to be discharged from the tip.

[0075] The elastic part is a structure that can produce elastic deformation. For example, the elastic part can be made of spring steel.

[0076] Initially, due to the close proximity of the two arc-shaped walls 29, the elastic part cannot eject from the locking cylinder 16. When the long axis end 28 is compressed, the curvature of the two arc-shaped walls 29 increases, meaning the degree of bending of the two arc-shaped walls 29 increases. This allows the elastic part to eject from the locking cylinder 16 under the action of elastic restoring force. By reasonably setting the length of the elastic part, it can abut against the inner wall of the mounting hole 20 after ejection. At this time, the elastic part can limit the sleeve 6, reducing the risk of the sleeve 6 detaching from the mounting hole 20. Furthermore, after the elastic part ejects, as the curvature of the arc-shaped walls 29 further increases, the elastic part can also be deformed into an arc-shaped plate structure. The arc-shaped plate structure can disperse the force along the axial direction of the sleeve 6 on the elastic part, increasing the structural strength of the elastic part and thus enhancing the limiting effect of the elastic part on the sleeve 6.

[0077] In some embodiments, the third through hole 9 is provided with a recess 26, and the outer wall surface of the long shaft end 28 is provided with a positioning part 27, which is accommodated in the recess 26.

[0078] The recessed portion 26 and the positioning portion 27 cooperate to reduce the risk that the locking cylinder 16 will not be able to deform when it rotates relative to the third through hole 9 under pressure.

[0079] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications, alterations, alterations, or substitutions made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A drainage blind pipe structure for tunnel construction, comprising a drainage blind pipe (3), characterized in that, It also includes a fixing component for fixing the drainage blind pipe (3) to the inner wall (1) of the tunnel, the fixing component comprising: The sleeve (6) is inserted into the mounting hole (20) of the inner wall (1) of the tunnel. Along the axial direction of the sleeve (6), the outer peripheral wall of the sleeve (6) is provided with a notch through groove (7), and the inner wall of the notch through groove (7) is provided with a first through hole (8). The first through hole (8) communicates with the inside of the sleeve (6). A nail body (10) is inserted through the sleeve (6) for insertion into the inner wall (1) of the tunnel. The nail body (10) is hollow inside. The side wall of the nail body (10) is provided with an outlet (11). Along the axial direction of the nail body (10), the outlet (11) includes a first side (12) and a second side (13). The first side (12) is close to the head of the nail body (10). The side wall of the nail body (10) is provided with a plurality of second through holes (15). Along the axial direction of the nail body (10), the second through holes (15) extend to the tip of the nail body (10) to divide the tip of the nail body (10) into a multi-lobed structure. The elastic wing cavity (14) includes a first elastic wall (21) and a second elastic wall. The first elastic wall (21) is connected to the first side (12). The second elastic wall includes a first segment (24) and a second segment (22). The first segment (24) and the second segment (22) are detachably connected. The first segment (24) is connected to the second side (13). The second segment (22) is connected to the side of the first elastic wall (21) away from the nail body (10). The elastic wing cavity (14) passes through the first through hole (8). The width of the first elastic wall (21) and the width of the second elastic wall are respectively equal to the distance between the two opposite side walls of the notch through groove (7). The angle between the first elastic wall (21) and the axis of the nail body (10) is less than 90°. The first segment (24) is provided with a first curved portion (25), and the second segment (22) is provided with a second curved portion. (23), the bending directions of the first bending part (25) and the second bending part (23) are opposite, the first bending part (25) and the second bending part (23) are fastened together, the inner wall of the notch groove (7) is provided with a third through hole (9), the fixing component also includes a locking tube (16), the locking tube (16) passes through the third through hole (9) and the second through hole (15), the locking tube (16) is flat, the locking tube (16) includes two oppositely arranged long shaft ends (28) and an arc wall (29) connecting the two long shaft ends (28), one of the two long shaft ends (28) abuts against the side of the second through hole (15) near the head of the nail body (10), the end of the locking tube (16) near the notch groove (7) is provided with a pop-out part (17), the elastic part is connected to the arc wall (29), the pop-out part (17) is bent and inserted into the locking tube (16); A connecting component connects the nail body (10) and the drainage blind pipe (3).

2. The tunnel construction drainage blind pipe structure according to claim 1, characterized in that, The connecting component includes a retaining ring (18), which is sleeved on the outer periphery of the drainage blind pipe (3) and connected to the nail body (10).

3. The tunnel construction drainage blind pipe structure according to claim 2, characterized in that, The connecting component also includes a threaded post (19), which is rotatably connected to the retaining ring (18). The threaded post (19) is inserted into the nail body (10) and threadedly connected to the nail body (10).

4. The tunnel construction drainage blind pipe structure according to claim 2, characterized in that, The retaining ring (18) is not a complete circular arc.

5. The tunnel construction drainage blind pipe structure according to claim 1, characterized in that, The second curved portion (23) bends into the elastic wing cavity (14).

6. The tunnel construction drainage blind pipe structure according to claim 1, characterized in that, The tip of the nail body (10) has multiple pointed protrusions on its outer wall surface.

7. The tunnel construction drainage blind pipe structure according to claim 1, characterized in that, The third through hole (9) is provided with a recess (26), and the outer wall surface of the long shaft end (28) is provided with a positioning part (27), which is accommodated in the recess (26).

Images