CN116816384A - Method for increasing grouting holes in shield tunnel segments - Google Patents
Method for increasing grouting holes in shield tunnel segments Download PDFInfo
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- CN116816384A CN116816384A CN202310337419.5A CN202310337419A CN116816384A CN 116816384 A CN116816384 A CN 116816384A CN 202310337419 A CN202310337419 A CN 202310337419A CN 116816384 A CN116816384 A CN 116816384A
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- sleeve
- shield tunnel
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims abstract description 26
- 239000003292 glue Substances 0.000 claims abstract description 19
- 238000005553 drilling Methods 0.000 claims description 28
- 238000010586 diagram Methods 0.000 claims description 11
- 239000000428 dust Substances 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000007569 slipcasting Methods 0.000 claims description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 230000005641 tunneling Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000012795 verification Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 241000628997 Flos Species 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 239000004071 soot Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a method for increasing opening of grouting holes in shield tunnel segments, which comprises the following steps: s1, duct piece fixed points; s2, positioning on site; s3, perforating; s4, grouting; s5, implanting a grouting sleeve; s6, cleaning the bar planting glue. By the method for increasing and opening the grouting holes of the shield tunnel segment, the tunnel segment can be opened on site before being installed, and the problem that the grouting holes of the segment are lack or not at specific positions can be effectively solved.
Description
Technical Field
The invention relates to the field of shield tunnel engineering, in particular to a method for increasing opening of grouting holes in shield tunnel segments.
Background
At present, the shield construction method is widely applied to urban rail transit construction engineering in terms of safety, environmental protection, rapidness and the like. In the whole shield method, a shield segment is used as a main structure of a tunnel and is manufactured in a prefabrication mode, but the situation that the grouting holes of the shield segment are positioned or the number of the grouting holes of the shield segment does not meet the field requirement can occur in shield tunneling, if the segment opening hole site operation is easily performed, the problems that the segment steel bars are chiseled out at a new hole opening position, the splicing machine cannot use the segment for splicing operation, the hole site depth is too deep (plugging is difficult after grouting is completed) and the like exist. Therefore, development of a method suitable for increasing grouting holes of a segment is needed to solve the problem of special events encountered on site.
Disclosure of Invention
The invention mainly aims to provide a method for increasing grouting holes in shield tunnel segments, which solves the problems that a new hole drilling position is used for chiseling segment steel bars, an assembly machine cannot use the segment to carry out assembly operation, and the hole site depth is too deep.
In order to solve the technical problems, the invention adopts the following technical scheme: a method for increasing opening grouting holes of shield tunnel segments comprises the following steps:
s1, determining the point positions of additionally arranged grouting holes on a drawing before opening the hole;
s2, positioning on site, horizontally and transversely placing the segment to be perforated, enabling an inner arc to face upwards, and then lofting the actual position on the segment according to the point position on the drawing, and marking;
s3, perforating, namely rotating the hole according to the marking position until the hole is drilled to a preset depth, and deashing the hole to ensure that the hole is dry and clean;
s4, grouting, injecting bar planting glue into the holes, and smearing the bar planting glue outside the grouting sleeve;
s5, implanting a grouting sleeve, and implanting the grouting sleeve into the hole until the planted bar glue emerges;
s6, cleaning the bar planting glue, and finally cleaning the bar planting glue which emerges from the hole.
In the preferred scheme, the positioning in the step S1 needs to be combined with the positions of a duct piece model, a duct piece reinforcement diagram, a duct piece existing grouting hole and a bolt hole, and needs to avoid the positions of duct piece reinforcements and a vacuum chuck, and the duct piece is one of an adjacent duct piece and a standard duct piece.
In a preferred embodiment, the specific field positioning manner in step S2 is: the front side surface of the tunneling direction of the segment is a surface A, the left side is a surface B, the right side is a surface D, and the rear side is a surface C; setting the point position center from the surface A to the hole as a, the point position center from the surface B to the hole as B, the point position center from the surface D to the hole as D, and the point position center from the surface C to the hole as C; firstly, determining the distance from the surface A to the center point of the additionally arranged grouting hole, namely, after the surface A is determined to be correct, sequentially determining the distances of the surface b, the surface c and the surface d, carrying out mutual verification, and after the square distances are consistent with the drawing, completing positioning.
In a preferred embodiment, the specific hole opening manner in the step S3 is as follows: the drilling machine is firstly tilted when drilling is started, the drilling machine is started and stopped, the pipe piece is grinded by utilizing the inertia of the drilling machine when power is cut off, and the drilling machine is slowly adjusted after a crescent groove is grinded until a circle is completely grinded; after the round shape is completely ground, the switch is turned on, the force is applied to press down, and the force applied to the shoulder rest on the water drill by the shoulder is used for pressing down; drilling is carried out in two sections, firstly, the intrados of the pipe piece is drilled downwards to the depth of the upper surface of the steel bar of the inner pipe piece from the intrados of the pipe piece, then the drill rod is lifted up, the inside of the hole is observed, whether the steel bar interference exists in a drilling path is observed, if the interference exists, the adjustment is carried out, the steel bar is avoided, the second section of drilling operation is carried out after the adjustment is finished, and the drilling is carried out to the preset depth; wherein, trompil cutting bit adopts the diameter to be greater than slip casting sleeve 1cm drill bit, and the change hole degree of depth is greater than slip casting sleeve length 1cm.
In the preferred scheme, the length of the grouting sleeve is smaller than the thickness of the pipe piece, before grouting after the pipe piece wall, the tool is used for penetrating into the grouting sleeve to break down the pipe piece, and after the break down, the grouting pipe is used for grouting.
In the preferred scheme, slip casting sleeve comprises embedded pipe, extension pipe and screw cap, and the diameter of embedded pipe is greater than the diameter of extension pipe to the embedded pipe adopts threaded connection's mode with the extension pipe link, and the screw cap screw thread runs through and sets up in the embedded pipe, and the end of screw cap is provided with the check valve that extends to in the extension pipe, all is provided with the tooth silk on the outer wall of embedded pipe and extension pipe, the junction of embedded pipe and extension pipe still is provided with sealing rubber circle.
In the preferred scheme, the ash removal device is adopted to remove ash in the hole in the step S3, and the ash removal device comprises an outer sleeve and a telescopic ash removal component which is arranged in the outer sleeve in a telescopic manner, and ash removal is carried out in the hole in the outer sleeve through the telescopic ash removal component in a telescopic manner of the outer sleeve.
In the preferred scheme, the outer sleeve is a hollow cylinder with two open ends, and a plurality of uniformly distributed telescopic grooves are uniformly formed in the wall surface of the outer sleeve;
the telescopic ash removal assembly comprises a bottom ring movably arranged in the outer sleeve, a connecting block arranged on the outer wall surface of the bottom ring and penetrating through a corresponding telescopic groove, an outer ring fixedly arranged at the other end of the connecting block, a cleaning brush arranged on the outer wall surface of the outer ring, a plurality of vertical rods arranged at the top of the bottom ring, a top plate fixedly arranged at the top end of the vertical rods and a stretching handle arranged at the top of the top plate.
In the preferred scheme, be provided with unpowered fan in the bottom ring, unpowered fan includes rotary shaft seat and rotatable cover rotary vane on the rotary shaft seat, and the outside of rotary shaft seat is provided with the connecting rod that a plurality of is connected with bottom ring internal wall, and the top of rotary shaft seat is provided with the center pole that is connected with the roof bottom.
In the preferred scheme, a hook-shaped groove is arranged on the side wall surface of the rotary shaft seat, a ratchet wheel component is arranged in the hook-shaped groove, and a one-way tooth socket matched with the ratchet wheel component is arranged on the inner wall surface of the rotary fan blade and used for enabling the unpowered fan to rotate only when the telescopic ash cleaning component is lifted;
the ratchet wheel component comprises a collision plate rotatably arranged in the hook groove and a collision spring arranged in the hook groove and contacted with the inner side of the collision plate.
The invention provides a method for increasing and opening grouting holes of shield tunnel segments, which can be used for carrying out on-site hole opening on the tunnel segments before the tunnel segments are installed, and can effectively solve the problem that the grouting holes of the segments are lack or not at specific positions.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a top view of an additional grouting hole structure of a standard block segment of the present invention;
FIG. 2 is an additional grouting hole locating map of the standard block segment of the present invention;
FIG. 3 is an additional grouting hole locating map of the adjoining block segment of the present invention;
FIG. 4 is a block diagram of an additional grouting Kong Ceshi for the inventive modular segment;
FIG. 5 is a block diagram of a grouting sleeve according to the present invention;
FIG. 6 is a cross-sectional view of the construction of the grouting sleeve of the present invention;
FIG. 7 is a schematic diagram of the invention in which the grouting holes are added to fill the bar planting glue;
FIG. 8 is a block diagram of an implantation of a grouting sleeve according to the present invention;
FIG. 9 is a block diagram of the ash removal device of the present invention;
FIG. 10 is an exploded view of the ash removal device of the present invention;
FIG. 11 is a block diagram of an outer sleeve of the present invention;
FIG. 12 is a block diagram of a telescopic ash removal assembly of the present invention;
FIG. 13 is a block diagram of an unpowered fan ratchet assembly in accordance with the present invention;
in the figure: segment 1; segment steel bars 101; grouting holes 2 are additionally arranged; grouting sleeve 3; an embedded pipe 301; an extension tube 302; a check valve 303; a dental floss 304; a screw cap 305; planting a bar adhesive 4; an ash removal device 5; an outer sleeve 51; a telescoping slot 512; a telescopic ash removal assembly 52; a bottom ring 521; a connection block 522; an outer ring 523; cleaning brush 524; unpowered fan 525; a rotary shaft seat 5251; rotating fan blades 5252; a hook groove 5253; a strike plate 5254; a pressing spring 5255; a connecting rod 526; a center rod 527; pole 528; a top plate 529; stretching the handle 530; .
Detailed Description
Example 1
As shown in fig. 1-8, the method for increasing and opening grouting holes of shield tunnel segments comprises the following steps:
s1, fixing a point of a duct piece 1, combining a duct piece model, a duct piece reinforcement diagram, a duct piece existing grouting hole and a bolt hole position before opening, firstly determining a point position of an additionally arranged grouting hole 2 on a CAD drawing, and avoiding the positions of a duct piece reinforcement 101 and a vacuum chuck, wherein the duct piece 1 is one of an adjacent duct piece and a standard duct piece;
s2, positioning on site, horizontally and transversely placing the segment 1 to be perforated, enabling an inner arc to face upwards, and then laying out the actual position on the segment 1 according to the point position on the drawing, and marking;
s3, perforating, namely rotating the hole according to the marking position until the hole is drilled to a preset depth, and deashing the hole to ensure that the hole is dry and clean;
s4, grouting, injecting the bar planting glue 4 into the holes, and smearing the bar planting glue 4 outside the grouting sleeve 3;
s5, implanting the grouting sleeve 3 into the hole until the bar planting glue 4 emerges, and solidifying the implantation of the grouting sleeve 3 through the bar planting glue 4;
s6, cleaning the bar planting glue 4, and finally cleaning the bar planting glue 4 emerging from the hole.
When the grouting sleeve 3 is used, the length of the grouting sleeve 3 is smaller than the thickness of the pipe piece 1, before grouting construction after the pipe piece 1 is formed, the pipe piece 1 is broken down by using a tool to penetrate into the grouting sleeve 3, and grouting is performed by using a grouting pipe after the pipe piece is broken down.
In a preferred embodiment, the specific field positioning manner in step S2 is: the front end side surface of the tunneling direction of the pipe piece 1 is taken as an A surface, the left side is taken as a B surface, the right side is taken as a D surface, and the rear side is taken as a C surface; setting the point position center from the surface A to the hole as a, the point position center from the surface B to the hole as B, the point position center from the surface D to the hole as D, and the point position center from the surface C to the hole as C; firstly, determining the distance from the surface A to the center point of the additionally arranged grouting hole 2, namely, after the surface A is determined to be correct, sequentially determining the distances of b, c and d, carrying out mutual verification, and after the square distances are consistent with the drawing, completing positioning.
In a preferred embodiment, the specific hole opening manner in the step S3 is as follows: the drilling machine is firstly tilted when drilling is started, the drilling machine is started and stopped, the pipe piece is grinded by utilizing the inertia of the drilling machine when power is cut off, and the drilling machine is slowly adjusted after a crescent groove is grinded until a circle is completely grinded; after the round shape is completely ground, the switch is turned on, the force is applied to press down, and the force applied to the shoulder rest on the water drill by the shoulder is used for pressing down; drilling is carried out in two sections, firstly, the intrados of the duct piece 1 is drilled downwards from the intrados of the duct piece 1 to the depth of the upper surface of the reinforcing steel bar 101 of the inner duct piece, then the drill rod is lifted up, the inside of the hole is observed, whether the reinforcing steel bar interference exists in the drilling path is observed, if the interference exists, the adjustment is carried out, the reinforcing steel bar is avoided, the second section of drilling operation is carried out after the adjustment is completed, and the drilling is carried out to the preset depth; wherein, the trompil cutting bit adopts the diameter to be greater than slip casting sleeve 31cm drill bit, and the change hole degree of depth is greater than slip casting sleeve 3 length 1cm.
In a preferred scheme, the grouting sleeve 3 is composed of an embedded pipe 301, an extension pipe 302 and a spiral cover 305, the diameter of the embedded pipe 301 is larger than that of the extension pipe 302, the connection end of the embedded pipe 301 and the connection end of the extension pipe 302 are in threaded connection, the spiral cover 305 is arranged in the embedded pipe 301 in a threaded penetrating mode, a check valve 303 extending into the extension pipe 302 is arranged at the end of the spiral cover 305, and integrally formed dental threads 304 are arranged on the outer wall surfaces of the embedded pipe 301 and the extension pipe 302.
When the grouting sleeve is used, the grouting effect is achieved by penetrating through the embedded pipe 301 and the extension pipe 302, the screw cover 305 is screwed after grouting is completed, backflow of slurry can be prevented through the check valve 303, and in addition, the dental floss 304 is arranged on the outer wall surfaces of the embedded pipe 301 and the extension pipe 302, so that the degree of fit with the bar planting glue 4 is increased through the dental floss 304, and the stability of implantation of the grouting sleeve 3 is improved.
The connection part of the embedded pipe 301 and the extension pipe 302 is also provided with a sealing rubber ring, so that water seepage can be prevented.
Example 2
In order to quickly meet the requirement of drying and cleaning in the hole, in step S3, the dust removing device 5 is used to remove the dust in the hole, the dust removing device 5 includes an outer sleeve 51 and a telescopic dust removing component 52 that is telescopically arranged in the outer sleeve 51, and the dust removing component 52 is used to remove the dust in the hole by telescoping the outer sleeve 51 in the outer sleeve 51.
In a preferred embodiment, the outer sleeve 51 is a hollow cylinder with two open ends, and a plurality of uniformly distributed expansion slots 512 are uniformly arranged on the wall surface of the outer sleeve 51, and in this embodiment, the number of expansion slots 512 is five;
the telescopic ash removal assembly 52 comprises a bottom ring 521 movably arranged in the outer sleeve 51, five connecting blocks 522 arranged on the outer wall surface of the bottom ring 521 and penetrating through corresponding telescopic slots 512, an outer ring 523 fixedly arranged at the other end of the connecting blocks 522, a cleaning brush 524 arranged on the outer wall surface of the outer ring 523, a plurality of vertical rods 528 fixedly arranged at the top of the bottom ring 521, a top plate 529 fixedly arranged at the top end of the vertical rods 528, and a stretching handle 530 arranged at the top of the top plate 529, wherein the diameter of the outer ring of the cleaning brush 524 is slightly larger than the diameter of the additionally arranged grouting holes 2, and the length of the outer sleeve 51 is longer than the length of the additionally arranged grouting holes 2.
When the telescopic ash removal device is used, the outer sleeve 51 is inserted into the additionally-arranged grouting hole 2, and the telescopic ash removal assembly 52 is enabled to perform piston motion in the additionally-arranged grouting hole 2 by controlling the stretching handle 530, so that the ash removal effect is achieved through contact between the cleaning brush 524 and the hole wall.
In the preferred scheme, be provided with unpowered fan 525 in the bottom ring 521, unpowered fan 525 includes rotary shaft seat 5251 and rotatable rotary fan blade 5252 of suit on rotary shaft seat 5251, and the outside of rotary shaft seat 5251 is provided with a plurality of connecting rod 526 with bottom ring 521 internal face fixed connection, and the quantity of connecting rod 526 is five in this embodiment, realizes the effect of fixed unpowered fan 525, and the top of rotary shaft seat 5251 has set firmly the central pole 527 that is connected with roof 529 bottom, improves holistic stability.
In use, unpowered fan 525 rotates by the piston motion of telescoping soot cleaning assembly 52, thereby improving the effect of exhausting soot from the holes while cleaning the soot.
In a preferred embodiment, a hook groove 5253 is provided on a side wall surface of the rotary shaft seat 5251, a ratchet component is provided in the hook groove 5253, and a unidirectional tooth groove 5256 matched with the ratchet component is provided on an inner wall surface of the rotary fan blade 5252, so that the unpowered fan 525 can only rotate when the telescopic ash cleaning component 52 is lifted;
the ratchet assembly comprises a supporting plate 5254 rotatably disposed in the hooking groove 5253, and a supporting spring 5255 fixedly disposed in the hooking groove 5253 and contacting the inner side of the supporting plate 5254, wherein the supporting plate 5254 is rotatably connected to the inner wall of the hooking groove 5253 through a rotation shaft.
When in use, the unpowered fan 525 can only rotate unidirectionally through the matching of the abutting plate 5254 and the unidirectional tooth grooves 5256, namely when the telescopic ash cleaning assembly 52 is lifted, so that when the telescopic ash cleaning assembly 52 is pressed down, the unpowered fan 525 is locked, the pressure intensity during pressing down can be enhanced, ash is discharged rapidly, when the telescopic ash cleaning assembly is lifted, the flow velocity is increased through the rotation of the unpowered fan 525, wind is enabled to enter the hole faster, the lifting is enabled to be smoother, the pressure intensity of pressing down next time can be increased, and meanwhile, the stability of the unpowered fan 525 is improved.
The above embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this invention are also within the scope of the invention.
Claims (10)
1. The method for increasing and opening grouting holes of the shield tunnel segments is characterized by comprising the following steps of: the method comprises the following steps:
s1, fixing a point of a duct piece (1), and determining a point position of an additionally arranged grouting hole (2) on a drawing before opening;
s2, positioning on site, horizontally and transversely placing the segment (1) to be perforated, enabling an inner arc to face upwards, and then laying out the actual position on the segment (1) according to the point position on the drawing, and marking;
s3, perforating, namely rotating the hole according to the marking position until the hole is drilled to a preset depth, and deashing the hole to ensure that the hole is dry and clean;
s4, grouting, injecting the bar planting glue (4) into the holes, and smearing the bar planting glue (4) outside the grouting sleeve (3);
s5, implanting the grouting sleeve (3), and implanting the grouting sleeve (3) into the hole until the bar planting glue (4) emerges;
s6, cleaning the bar planting glue (4), and finally cleaning the bar planting glue (4) which emerges from the hole.
2. The method for increasing opening of grouting holes of shield tunnel segments according to claim 1, which is characterized in that: the positioning in the step S1 is required to be combined with the positions of a duct piece model, a duct piece reinforcement diagram, a duct piece existing grouting hole and a bolt hole, the positions of duct piece reinforcements (101) and vacuum chucks are required to be avoided, and the duct piece (1) is one of an adjacent duct piece and a standard duct piece.
3. The method for increasing opening of grouting holes of shield tunnel segments according to claim 1, which is characterized in that: the specific field positioning manner in the step S2 is as follows: the front end side surface of the tunneling direction of the pipe piece (1) is a surface A, the left side is a surface B, the right side is a surface D, and the rear side is a surface C; setting the point position center from the surface A to the hole as a, the point position center from the surface B to the hole as B, the point position center from the surface D to the hole as D, and the point position center from the surface C to the hole as C; firstly, determining the distance from the surface A to the central point of the additionally arranged grouting hole (2), namely, after the surface A is determined to be correct, sequentially determining the distances of b, c and d, performing mutual verification, and after the square distances are consistent with the drawing, completing positioning.
4. The method for increasing opening of grouting holes of shield tunnel segments according to claim 1, which is characterized in that: the specific hole opening mode in the step S3 is as follows: the drilling machine is firstly tilted when drilling is started, the drilling machine is started and stopped, the pipe piece is grinded by utilizing the inertia of the drilling machine when power is cut off, and the drilling machine is slowly adjusted after a crescent groove is grinded until a circle is completely grinded; after the round shape is completely ground, the switch is turned on, the force is applied to press down, and the force applied to the shoulder rest on the water drill by the shoulder is used for pressing down; drilling is carried out in two sections, firstly, the intrados of the duct piece (1) is drilled downwards to the depth of the upper surface of the reinforcing steel bar (101) of the inner duct piece from the intrados of the duct piece (1), then, a drill rod is lifted up, the inside of a hole is observed, whether the reinforcing steel bar interference exists in a drilling path is observed, if so, adjustment is carried out, the reinforcing steel bar is avoided, and after the adjustment is finished, a second section of drilling operation is carried out, and drilling is carried out to a preset depth; wherein, the trompil cutting bit adopts the diameter to be greater than slip casting sleeve (3) 1cm drill bit, and the change hole degree of depth is greater than slip casting sleeve (3) length 1cm.
5. The method for increasing opening of grouting holes of shield tunnel segments according to claim 1, which is characterized in that: the length of the grouting sleeve (3) is smaller than the thickness of the pipe piece (1), before grouting after the pipe piece (1) is formed, the tool is used for penetrating into the grouting sleeve (3) to break down the pipe piece (1), and after breaking down, the grouting pipe is used for grouting.
6. The method for increasing the opening of grouting holes of the shield tunnel segment according to claim 5, which is characterized in that: grouting sleeve (3) comprises pre-buried pipe (301), extension pipe (302) and screw cap (305), and the diameter of pre-buried pipe (301) is greater than the diameter of extension pipe (302) to pre-buried pipe (301) adopts threaded connection's mode with extension pipe (302) link, and screw cap (305) screw thread runs through and sets up in pre-buried pipe (301), and the end of screw cap (305) is provided with check valve (303) that extend to in extension pipe (302), all is provided with tooth silk (304) on the outer wall of pre-buried pipe (301) and extension pipe (302), the junction of pre-buried pipe (301) and extension pipe (302) still is provided with sealing rubber circle.
7. The method for increasing opening of grouting holes of shield tunnel segments according to claim 1, which is characterized in that: in the step S3, the inside of the hole is cleaned by adopting a dust cleaning device (5), the dust cleaning device (5) comprises an outer sleeve (51) and a telescopic dust cleaning component (52) which is arranged in the outer sleeve (51) in a telescopic manner, and the inside of the hole is cleaned by the telescopic dust cleaning component (52) in the outer sleeve (51) in a telescopic manner.
8. The method for increasing the opening of grouting holes of the shield tunnel segment according to claim 7, which is characterized in that: the outer sleeve (51) is a hollow cylinder with two open ends, and a plurality of uniformly distributed telescopic grooves (512) are uniformly formed in the wall surface of the outer sleeve (51);
the telescopic ash removal assembly (52) comprises a bottom ring (521) movably arranged in an outer sleeve (51), a connecting block (522) arranged on the outer wall surface of the bottom ring (521) and penetrating through a corresponding telescopic groove (512), an outer ring (523) fixedly arranged at the other end of the connecting block (522), a cleaning brush (524) arranged on the outer wall surface of the outer ring (523), a plurality of vertical rods (528) arranged at the top of the bottom ring (521), a top plate (529) fixedly arranged at the top of the vertical rods (528) and a stretching handle (530) arranged at the top of the top plate (529).
9. The method for increasing opening of grouting holes of shield tunnel segments according to claim 8, which is characterized in that: the novel fan is characterized in that an unpowered fan (525) is arranged in the bottom ring (521), the unpowered fan (525) comprises a rotating shaft seat (5251) and rotating fan blades (5252) which are rotatably sleeved on the rotating shaft seat (5251), a plurality of connecting rods (526) connected with the inner wall surface of the bottom ring (521) are arranged outside the rotating shaft seat (5251), and a central rod (527) connected with the bottom of the top plate (529) is arranged at the top of the rotating shaft seat (5251).
10. The method for increasing opening of grouting holes of shield tunnel segments according to claim 9, which is characterized in that: a hook groove (5253) is formed in the side wall surface of the rotating shaft seat (5251), a ratchet wheel component is arranged in the hook groove (5253), and a one-way tooth groove (5256) matched with the ratchet wheel component is formed in the inner wall surface of the rotating fan blade (5252) and used for enabling the unpowered fan (525) to rotate only when the telescopic ash cleaning component (52) is lifted;
the ratchet assembly includes a contact plate (5254) rotatably disposed in the hooking groove (5253), and a contact spring (5255) disposed in the hooking groove (5253) in contact with an inner side of the contact plate (5254).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310337419.5A CN116816384A (en) | 2023-03-31 | 2023-03-31 | Method for increasing grouting holes in shield tunnel segments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310337419.5A CN116816384A (en) | 2023-03-31 | 2023-03-31 | Method for increasing grouting holes in shield tunnel segments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116816384A true CN116816384A (en) | 2023-09-29 |
Family
ID=88124838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310337419.5A Pending CN116816384A (en) | 2023-03-31 | 2023-03-31 | Method for increasing grouting holes in shield tunnel segments |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116816384A (en) |
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2023
- 2023-03-31 CN CN202310337419.5A patent/CN116816384A/en active Pending
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