A method for reinforcing tunnels using basalt-steel composite corrugated plates

Abstract

The present invention discloses a method for reinforcing a tunnel by using basalt-steel composite corrugated plates, which specifically includes the following steps: S1, prefabricating and assembling multiple composite corrugated plates into multiple groups of arc segments, wherein the multiple arc segments can be butted together to form a group of annular units with an arched structure on the inner side of the tunnel; S2, opening bottom grooves on the bottom surfaces of both sides of the tunnel, fixing butt joints on the inner wall of the tunnel, and the butt joints are located at the end butt joints of the arc segments; S3, sequentially installing the arc segments, inserting the two ends of the arc segments on both sides into the bottom grooves and the butt joints respectively, and inserting the two ends of the middle arc segment into the butt joints on both sides respectively, thereby forming a group of annular units, and grouting between the annular units and the original secondary lining of the tunnel; S4, sequentially constructing the annular units according to the method of step S3, and fixing the butt joint edges of adjacent annular units; S5, grouting to fill the bottom grooves and the butt joints to complete the reinforcement of the inner wall of the tunnel.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel disease prevention, and more particularly to a method for reinforcing a tunnel by utilizing basalt-steel composite corrugated plates. Background Art

[0002] With long-term operation, tunnels will experience tunnel disease problems. To ensure the normal operation and safety of the tunnel, tunnel disease remediation is necessary on a regular basis. Existing tunnel disease remediation methods typically use concrete reinforcement, corrugated plate reinforcement, etc. Concrete reinforcement solutions have complex construction processes, long construction cycles, low efficiency, and high construction risks, which seriously affect the normal operation of the tunnel. Corrugated plate reinforcement solutions have simple processes, short construction cycles, and low construction risks, but they are difficult to install and the construction period is slow.

[0003] In addition, there are many cables inside the tunnel, so the corrugated plate is required to have insulation properties to prevent conductivity. The current common practice is to brush insulating paint on both sides of the steel plate. The plate thickness is generally 6mm, the insulating paint thickness is 1.5mm, and the total thickness is 9mm. However, the insulating paint is easy to fall off during use, which will cause the risk of conductivity. Basalt fiber reinforced material (BFRP) is a new type of durable material. Basalt continuous fiber is a new type of high-tech fiber made by melting basalt ore at 1450℃~1500℃ and drawing it through a spinneret. It has excellent mechanical properties and high temperature resistance, high tensile strength and elastic modulus, good insulation, radiation resistance, excellent high temperature stability and chemical stability, etc. It is pure natural and pollution-free, with high cost performance.

[0004] Therefore, how to utilize the structural advantages of corrugated steel plates and basalt fibers to provide a method for reinforcing tunnels using basalt-steel composite corrugated plates is an urgent problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a method for reinforcing a tunnel using basalt-steel composite corrugated plates, aiming to solve the above technical problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for reinforcing a tunnel using basalt-steel composite corrugated plates comprises the following steps:

[0008] S1. Prefabricate and assemble multiple composite corrugated plates into multiple groups of arc segments, wherein the multiple arc segments can be connected to form a group of annular units with an arched structure inside the tunnel;

[0009] S2. Opening bottom grooves on the bottom surfaces of both sides of the tunnel and fixing docking pieces on the inner wall of the tunnel, wherein the docking pieces are located at the end docking points of the arc segments;

[0010] S3. Install the arc segments in sequence, inserting the ends of the arc segments on both sides into the bottom groove and the docking pieces, respectively, and inserting the ends of the middle arc segment into the docking pieces on both sides, respectively, to form a group of annular units, and injecting grout between the annular units and the original secondary lining of the tunnel;

[0011] S4, sequentially constructing the annular units according to the method of step S3, and fixing the butt edges of adjacent annular units;

[0012] S5. Fill the bottom trench and the joint pieces with grouting to complete the reinforcement of the inner wall of the tunnel.

[0013] Through the above technical solution, the tunnel reinforcement method provided by the present invention utilizes the performance advantages of basalt-steel composite corrugated plates, which have good corrosion resistance, anti-conductivity, high temperature resistance and other properties, and the structure has stronger functionality. In addition, a prefabrication processing mode is adopted to prefabricate the composite corrugated plates into arc segments, which are assembled into annular units on site and connected using bottom grooves and docking parts. This overcomes the dimensional errors of on-site connections and facilitates connection and fixation. It has the advantages of simple procedures, short construction period, and low construction risk.

[0014] Preferably, in the above-mentioned method of reinforcing a tunnel using basalt-steel composite corrugated plates, each set of the annular units comprises three arcuate segments; the number of the docking members is two, one at each end of the middle arcuate segment. This provides a reasonable number, a stable layout, and ease of installation.

[0015] Preferably, in the aforementioned method of reinforcing a tunnel using basalt-steel composite corrugated sheeting, the joining member is an elongated, H-shaped cross-section. The notches on either side of the joining member engage with the ends of the arcuate section, and the joining member is secured to the inner wall of the tunnel via screws. The use of H-shaped joining members in this invention improves reinforcement efficiency and prevents problems such as poor installation stability caused by dimensional errors.

[0016] Preferably, in the above-mentioned method of reinforcing a tunnel using basalt-steel composite corrugated plates, extrusion blocks are provided in the grooves on both sides of the jointing pieces, which can further improve the stability of the structure.

[0017] Preferably, in the above-mentioned method of reinforcing a tunnel using basalt-steel composite corrugated plates, the multiple composite corrugated plates in each group of arc segments are staggered and butted together, which enhances the stability after connection.

[0018] Preferably, in the above-mentioned method of reinforcing a tunnel using a basalt-steel composite corrugated plate, the composite corrugated plate comprises a corrugated steel plate, a basalt layer and a basalt sealing strip; the corrugated steel plate is an arc-shaped plate, and its arc line is consistent with the extension direction of its crest / trough, a plurality of bolt holes are evenly opened on the edge of the surface of the corrugated steel plate, and adjacent edges of the corrugated steel plate are fastened by basalt bolts passing through the bolt holes; the basalt layer comprises a basalt fiber cloth compositely bonded to the surfaces of both sides of the corrugated steel plate; the cross-section of the basalt sealing strip is U-shaped, and the U-shaped groove of the basalt sealing strip is inserted and fitted on the edge of the corrugated steel plate, and bonded to the outside of the basalt fiber cloth.

[0019] The composite plate structure provided by the present invention uses a corrugated steel plate as the inner core and a composite basalt fiber material on the outer side, combining the strength advantages of the corrugated steel plate with the performance advantages of the basalt fiber. It not only has the advantages of simple process, short construction period, and low construction risk, but also has good corrosion resistance, anti-conductivity, high temperature resistance and other properties, and the structure is more functional.

[0020] Preferably, in the above-mentioned method for reinforcing a tunnel using a basalt-steel composite corrugated plate, the preparation method of the composite corrugated plate comprises the following steps:

[0021] S1, preparing the corrugated steel plate and the basalt fiber cloth for forming, and opening bolt holes on the edges of the corrugated steel plate;

[0022] S2. Apply resin glue to both sides of the corrugated steel plate, then arrange two layers of basalt fiber cloth on both sides of the corrugated steel plate respectively, and place them in a pressurized mold to press and bond them;

[0023] S3, placing the corrugated steel plate bonded with the basalt fiber cloth into a rolling mold to further improve the bonding effect between the corrugated steel plate and the basalt fiber cloth;

[0024] S4. Take out the corrugated steel plate from the rolling die, and bond the basalt sealing strips around the edges of the corrugated steel plate.

[0025] The preparation method of the basalt fiber-steel composite corrugated plate provided by the present invention adopts two bonding processes of pressing and rolling, so that the composite effect of the basalt fiber and the corrugated steel plate is more stable. Finally, by bonding basalt sealing strips on the four edges of the corrugated steel plate, failure due to debonding at the edges can be prevented. The preparation method is simple, has a long service life, and has good use effect.

[0026] Preferably, in the above-mentioned method of reinforcing a tunnel using a basalt-steel composite corrugated plate, the pressure mold includes a lower mold, an upper mold and a hydraulic cylinder mechanism; the upper surface of the lower mold is a convex arc surface, and the surface of the lower mold has a lower corrugated groove corresponding to the corrugated steel plate; the upper mold is arranged above the lower mold, and the lower surface of the upper mold is a concave arc surface that matches the upper surface of the lower mold, and the lower surface of the upper mold has an upper corrugated groove corresponding to the corrugated steel plate; the hydraulic cylinder mechanism is connected to the top of the upper mold and is used to control the lifting and lowering movement of the upper mold, thereby realizing the closing and opening of the upper mold and the lower mold. The pressure mold provided by the present invention controls the opening and closing of the pressurization through the hydraulic cylinder mechanism, thereby realizing the initial bonding and fixation of the basalt fiber cloth and the corrugated steel plate.

[0027] Preferably, in the above-mentioned method of reinforcing a tunnel using a basalt-steel composite corrugated plate, the rolling mold includes a base, a lower arc frame, an upper arc frame and an elastic support column; the lower arc frame is fixed on the base, and its arc convex surface faces upward, and the lower arc frame is rotatably connected to multiple lower rotating shafts, and multiple lower pressure wheels are fixed on the lower rotating shafts; the upper arc frame is arranged above the lower arc frame, and its arc concave surface corresponds to the arc convex surface of the lower arc frame, and the upper arc frame is The rotatable structure is connected to multiple upper rotating shafts, on which multiple upper pressure wheels are fixed. The upper and lower pressure wheels are arranged in an alternating manner and correspond to the peaks and troughs of the corrugated steel plate. The elastic support columns are multiple and connected between the base and the side wall of the upper curved frame. The lower rotating shaft near the inlet end of the lower curved frame is connected to a drive motor via a pulley set. The outer ring curvature of the lower and upper pressure wheels is the same as the curvature of the peaks and troughs of the corrugated steel plate. The rolling pressing of the rolling die can improve the bonding effect between the basalt fiber cloth and the corrugated steel plate, and can overcome the bonding defects of the pressurized die.

[0028] Preferably, in the above-mentioned method of reinforcing a tunnel using a basalt-steel composite corrugated plate, the elastic support column includes a column, an adjusting screw, a support plate, a spring and an adjusting nut; the column is vertically fixed on the base; the adjusting screw is vertically fixed to the top of the column; the support plate is fixed to the side wall of the upper arc frame and has a through hole for passing the adjusting screw; the spring is sleeved on the adjusting screw and is tightened between the top of the column and the support plate; the adjusting nut is tightened on the adjusting screw and presses the support plate. The elastic support column provided by the present invention can adjust the pressing force of the upper and lower pressure wheels to prevent wear and failure due to long-term use.

[0029] It can be seen from the above technical solution that, compared with the prior art, the present invention discloses a method for reinforcing a tunnel using basalt-steel composite corrugated plates, which has the following beneficial effects:

[0030] 1. The tunnel reinforcement method provided by the present invention utilizes the performance advantages of basalt-steel composite corrugated plates, which have excellent corrosion resistance, anti-conductivity, and high-temperature resistance, and the structure has stronger functionality. In addition, a prefabricated processing mode is adopted to prefabricate the composite corrugated plates into arc segments, which are then assembled into ring units on site. The connections are achieved using bottom grooves and butt joints, which overcomes the dimensional errors of on-site connections and facilitates connection and fixation. It has the advantages of simple process, short construction period, and low construction risk.

[0031] 2. The composite plate structure provided by the present invention uses corrugated steel plate as the inner core and composite basalt fiber material on the outside, combining the strength advantages of corrugated steel plate and the performance advantages of basalt fiber. It not only has the advantages of simple process, short construction period, and low construction risk, but also has good corrosion resistance, anti-conductivity, high temperature resistance and other properties, and the structure is more functional.

[0032] 3. The preparation method of the basalt fiber-steel composite corrugated plate provided by the present invention adopts two bonding processes of pressing and rolling, so that the composite effect of the basalt fiber and the corrugated steel plate is more stable. Finally, by bonding the basalt sealing strips around the edges of the corrugated steel plate, it can prevent the edges from failing due to debonding. The preparation method is simple, has a long service life, and has good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0034] Figure 1 A schematic diagram of the structure of a tunnel reinforced with basalt-steel composite corrugated plates provided by the present invention;

[0035] Figure 2 A schematic structural diagram of the arc segment provided by the present invention;

[0036] Figure 3 A schematic structural diagram of the composite corrugated plate provided by the present invention;

[0037] Figure 4 A cross-sectional view of the composite corrugated plate provided by the present invention;

[0038] Figure 5 A schematic structural diagram of the corrugated steel plate provided by the present invention;

[0039] Figure 6 A schematic structural diagram of the pressurized die provided by the present invention;

[0040] Figure 7 A schematic structural diagram of the rolling die provided by the present invention;

[0041] Figure 8 This is a front view of the rolling die provided by the present invention.

[0042] in:

[0043] 1-Composite corrugated sheet;

[0044] 11-corrugated steel plate; 111-bolt hole; 12-basalt layer; 13-basalt sealing strip; 14-basalt bolt;

[0045] 2-arc segments;

[0046] 3-ring unit;

[0047] 4-Tunnel;

[0048] 41-Bottom slot

[0049] 5- docking piece;

[0050] 6- pressurized mold;

[0051] 61-lower mold; 62-upper mold; 63-hydraulic cylinder mechanism;

[0052] 7- rolling die;

[0053] 71-base; 72-lower arc frame; 73-upper arc frame; 74-elastic support column; 741-upright column; 742-adjusting screw; 743-support plate; 744-spring; 745-adjusting nut; 75-lower rotating shaft; 76-lower pressure wheel; 77-upper rotating shaft; 78-upper pressure wheel; 79-drive motor. DETAILED DESCRIPTION

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0055] See attached Figure 1 and attached Figure 2 The embodiment of the present invention discloses a method for reinforcing a tunnel using basalt-steel composite corrugated plates, which specifically includes the following steps:

[0056] S1. Prefabricate and assemble multiple composite corrugated plates 1 into multiple groups of arc segments 2. The multiple arc segments 2 can be connected to form a group of annular units 3 with an arched structure inside the tunnel 4;

[0057] S2. Open bottom grooves 41 on the bottom surfaces of both sides of the tunnel 4, and fix docking pieces 5 on the inner walls of the tunnel 41. The docking pieces 5 are located at the end docking points of the arc segments 2.

[0058] S3. Install the arc segments 2 in sequence, inserting the ends of the arc segments 2 on both sides into the bottom groove 41 and the docking pieces 5 respectively, and inserting the ends of the middle arc segment 2 into the docking pieces 5 on both sides respectively, thereby forming a set of annular units 3, and injecting grouting between the annular units 3 and the original secondary lining of the tunnel 4;

[0059] S4, building the annular units 3 in sequence according to the method of step S3, and fixing the butt edges of adjacent annular units 3;

[0060] S5 , grouting is performed to fill the bottom groove 41 and the joint piece 5 , thereby completing the reinforcement of the inner wall of the tunnel 4 .

[0061] In order to further optimize the above technical solution, each group of annular units 3 includes three arc segments 2; the number of docking members 5 is two sets, and they are respectively located at both ends of the middle arc segment 2.

[0062] In order to further optimize the above technical solution, the docking piece 5 is a long strip structure with an arc-shaped H-shaped cross section. The notches on both sides of the docking piece 5 are respectively plugged into the two ends of the arc segment 2, and the docking piece is fixed to the inner wall of the tunnel 4 by screws.

[0063] In order to further optimize the above technical solution, extrusion blocks are provided in the grooves on both sides of the docking member 5 .

[0064] In order to further optimize the above technical solution, the multiple composite corrugated plates 1 in each group of arc segments 2 are staggered and butt-jointed.

[0065] See attached Figure 3 To the attached Figure 8 The composite corrugated plate 1 includes a corrugated steel plate 11, a basalt layer 12 and a basalt sealing strip 13; the corrugated steel plate 11 is an arc-shaped plate, and its arc line is consistent with the extension direction of its crest / trough. A plurality of bolt holes 111 are evenly opened on the edge of the surface of the corrugated steel plate 11, and the edges of adjacent corrugated steel plates 11 are fastened by basalt bolts 14 passing through the bolt holes 111; the basalt layer 12 includes a basalt fiber cloth compositely bonded to the surfaces of both sides of the corrugated steel plate 11; the cross-section of the basalt sealing strip 13 is U-shaped, and the U-shaped groove of the basalt sealing strip 13 is inserted into and fitted on the edge of the corrugated steel plate 11, and bonded to the outer side of the basalt fiber cloth.

[0066] In order to further optimize the above technical solution, the preparation method of the composite corrugated plate 1 includes the following steps:

[0067] S1, prepare the corrugated steel plate 11 and basalt fiber cloth, and open bolt holes 111 on the edge of the corrugated steel plate 11;

[0068] S2. Apply resin glue to both sides of the corrugated steel plate 11, then arrange two layers of basalt fiber cloth on both sides of the corrugated steel plate 11, and place them in a pressurized mold 6 to press and bond them tightly;

[0069] S3, placing the corrugated steel plate 11 bonded with the basalt fiber cloth into the rolling die 7 to further improve the bonding effect between the corrugated steel plate 11 and the basalt fiber cloth;

[0070] S4. Take out the corrugated steel plate 11 from the rolling die 7 and adhere basalt sealing strips 13 around the edges of the corrugated steel plate 11.

[0071] In order to further optimize the above technical solution, the pressurizing mold 6 includes a lower mold 61, an upper mold 62 and a hydraulic cylinder mechanism 63; the upper surface of the lower mold 61 is a convex arc surface, and the surface of the lower mold 61 has a lower corrugated groove corresponding to the corrugated steel plate 11; the upper mold 62 is arranged above the lower mold 61, and the lower surface of the upper mold 62 is a concave arc surface that cooperates with the upper surface of the lower mold 61, and the lower surface of the upper mold 62 has an upper corrugated groove corresponding to the corrugated steel plate 11; the hydraulic cylinder mechanism 63 is connected to the top of the upper mold 62, and is used to control the lifting and lowering movement of the upper mold 62, thereby realizing the closing and opening of the upper mold 62 and the lower mold 61.

[0072] In order to further optimize the above technical solution, the rolling die 7 includes a base 71, a lower arc frame 72, an upper arc frame 73 and an elastic support column 74; the lower arc frame 72 is fixed on the base 71, and its arc convex surface faces upward, and a plurality of lower rotating shafts 75 are rotatably connected to the lower arc frame 72, and a plurality of lower pressing wheels 76 are fixed on the lower rotating shaft 75; the upper arc frame 73 is arranged above the lower arc frame 72, and its arc concave surface is aligned with the lower arc frame 72. Corresponding to the arc-shaped convex surface, the upper arc frame 73 is rotatably connected to multiple upper rotating shafts 77, and multiple upper pressure wheels 78 are fixed on the upper rotating shafts 77. The upper pressure wheels 78 and the lower pressure wheels 76 are arranged alternately and correspond to the peaks and troughs of the corrugated steel plate 11; there are multiple elastic support columns 74, which are connected between the base 71 and the side wall of the upper arc frame 73; the lower rotating shaft 75 near the inlet end of the lower arc frame 72 is connected to the drive motor 79 through a pulley group; the outer radian of the lower pressure wheel 76 and the upper pressure wheel 78 is the same as the radian of the peaks and troughs of the corrugated steel plate 11.

[0073] In order to further optimize the above technical solution, the elastic support column 74 includes a column 741, an adjusting screw 742, a support plate 743, a spring 744 and an adjusting nut 745; the column 741 is vertically fixed on the base 71; the adjusting screw 742 is vertically fixed to the top of the column 741; the support plate 743 is fixed on the side wall of the upper arc frame 73, and has a through hole for passing the adjusting screw 742; the spring 744 is sleeved on the adjusting screw 742 and is tightened between the top of the column 741 and the support plate 743; the adjusting nut 745 is fastened to the adjusting screw 742 and presses the support plate 743.

[0074] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0075] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for reinforcing a tunnel using basalt-steel composite corrugated plates, characterized in that: The specific steps include: S1, prefabricating and assembling a plurality of composite corrugated plates (1) into a plurality of groups of arc segments (2), wherein the plurality of arc segments (2) can be butted together to form a group of annular units (3) of an arched structure inside a tunnel (4); S2, opening bottom grooves (41) on the bottom surfaces of both sides of the tunnel (4), fixing docking pieces (5) on the inner wall of the tunnel (4), wherein the docking pieces (5) are located at the end docking points of the arc segments (2); S3, sequentially installing the arc segments (2), inserting the two ends of the arc segments (2) on both sides into the bottom groove (41) and the docking piece (5), respectively, inserting the two ends of the middle arc segment (2) into the docking pieces (5) on both sides, thereby forming a group of the annular units (3), and grouting between the annular units (3) and the original secondary lining of the tunnel (4); S4, constructing the annular units (3) in sequence according to the method of step S3, and fixing the butt edges of adjacent annular units (3); S5, grouting to fill the bottom groove (41) and the docking piece (5), completing the reinforcement of the inner wall of the tunnel (4); The composite corrugated plate (1) comprises a corrugated steel plate (11), a basalt layer (12) and a basalt sealing strip (13); the corrugated steel plate (11) is an arc-shaped plate, and its arc line is consistent with the extension direction of its wave crest / wave trough, and a plurality of bolt holes (111) are evenly opened on the edge of the surface of the corrugated steel plate (11), and the adjacent edges of the corrugated steel plate (11) are fastened by basalt bolts (14) passing through the bolt holes (111); the basalt layer (12) comprises a basalt fiber cloth compositely bonded to the surfaces of both sides of the corrugated steel plate (11); the cross section of the basalt sealing strip (13) is U-shaped, and the U-shaped groove of the basalt sealing strip (13) is inserted and fitted on the edge of the corrugated steel plate (11) and bonded to the outer side of the basalt fiber cloth; The preparation method of the composite corrugated plate (1) comprises the following steps: S1, preparing the corrugated steel plate (11) and the basalt fiber cloth for forming, and opening bolt holes (111) on the edges of the corrugated steel plate (11); S2, applying resin glue to both sides of the corrugated steel plate (11), and then arranging two layers of the basalt fiber cloth on both sides of the corrugated steel plate (11) respectively, and placing them in a pressurized mold (6) to press and bond them; S3, placing the corrugated steel plate (11) bonded with the basalt fiber cloth into a rolling mold (7) to further improve the bonding effect between the corrugated steel plate (11) and the basalt fiber cloth; S4, taking out the corrugated steel plate (11) from the rolling die (7), and bonding the basalt sealing strips (13) around the periphery of the corrugated steel plate (11); The pressurizing mold (6) includes a lower mold (61), an upper mold (62) and a hydraulic cylinder mechanism (63); the upper surface of the lower mold (61) is a convex arc surface, and the surface of the lower mold (61) has a lower corrugated groove corresponding to the corrugated steel plate (11); the upper mold (62) is arranged above the lower mold (61), and the lower surface of the upper mold (62) is a concave arc surface that matches the upper surface of the lower mold (61), and the lower surface of the upper mold (62) has an upper corrugated groove corresponding to the corrugated steel plate (11); the hydraulic cylinder mechanism (63) is connected to the top of the upper mold (62) and is used to control the lifting movement of the upper mold (62), thereby realizing the closing and opening of the upper mold (62) and the lower mold (61).

2. The method for reinforcing a tunnel using basalt-steel composite corrugated plates according to claim 1, characterized in that: Each group of the annular units (3) includes three arc segments (2); the number of the docking members (5) is two sets, and they are respectively located at the two ends of the middle arc segment (2).

3. The method for reinforcing a tunnel using basalt-steel composite corrugated plates according to claim 2, characterized in that: The docking piece (5) is a long strip structure with an arc-shaped H-shaped cross section. The notches on both sides of the docking piece (5) are respectively plugged into the two ends of the arc segment (2). The docking piece is fixed to the inner wall of the tunnel (4) by screws.

4. The method for reinforcing a tunnel using basalt-steel composite corrugated plates according to claim 3, characterized in that: Extrusion blocks are provided in the grooves on both sides of the docking piece (5).

5. The method for reinforcing a tunnel using basalt-steel composite corrugated plates according to claim 1, characterized in that: The multiple composite corrugated plates (1) of each group of arc segments (2) are staggered and butt-jointed.

6. The method for reinforcing a tunnel using basalt-steel composite corrugated plates according to claim 1, characterized in that: The rolling die (7) comprises a base (71), a lower arc frame (72), an upper arc frame (73) and an elastic support column (74); the lower arc frame (72) is fixed on the base (71), and its arc convex surface faces upward, and the lower arc frame (72) is rotatably connected to a plurality of lower rotating shafts (75), and the lower rotating shafts (75) are fixed to a plurality of lower pressing wheels (76); the upper arc frame (73) is arranged above the lower arc frame (72), and its arc concave surface corresponds to the arc convex surface of the lower arc frame (72), and the upper arc frame (73) is rotatably connected to a plurality of upper rotating shafts (77), A plurality of upper pressing wheels (78) are fixed on the upper rotating shaft (77), and the upper pressing wheels (78) and the lower pressing wheels (76) are arranged in an alternating manner and correspond to the crests and troughs of the corrugated steel plate (11); the elastic support columns (74) are multiple in number and are connected between the base (71) and the side wall of the upper arc frame (73); the lower rotating shaft (75) on the lower arc frame (72) near the inlet end is connected to a drive motor (79) through a pulley group; the outer ring curvature of the lower pressing wheel (76) and the upper pressing wheel (78) is the same as the curvature of the crests and troughs of the corrugated steel plate (11).

7. The method for reinforcing a tunnel using basalt-steel composite corrugated plates according to claim 6, characterized in that: The elastic support column (74) includes a column (741), an adjusting screw (742), a support plate (743), a spring (744) and an adjusting nut (745); the column (741) is vertically fixed on the base (71); the adjusting screw (742) is vertically fixed to the top of the column (741); the support plate (743) is fixed on the side wall of the upper arc frame (73) and has a through hole for passing the adjusting screw (742); the spring (744) is sleeved on the adjusting screw (742) and is pressed between the top of the column (741) and the support plate (743); the adjusting nut (745) is fastened to the adjusting screw (742) and presses the support plate (743).

Images