LU501708B1 - Positioning device and positioning method for anchor rod drilling of steel arch of tunnel primary support - Google Patents
Positioning device and positioning method for anchor rod drilling of steel arch of tunnel primary support Download PDFInfo
- Publication number
- LU501708B1 LU501708B1 LU501708A LU501708A LU501708B1 LU 501708 B1 LU501708 B1 LU 501708B1 LU 501708 A LU501708 A LU 501708A LU 501708 A LU501708 A LU 501708A LU 501708 B1 LU501708 B1 LU 501708B1
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- Luxembourg
- Prior art keywords
- positioning
- plate
- anchor rod
- drilling
- shaped steel
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 109
- 239000010959 steel Substances 0.000 title claims abstract description 109
- 238000005553 drilling Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
- E21B15/04—Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The application relates to a positioning device and a positioning method for anchor rod drilling of steel arch of tunnel primary support, which comprises a positioning mechanism and a fastening mechanism, after the positioning device is installed, the guide pipe of the positioning mechanism is used as the anchor rod positioning hole, a drilling rig drills through the positioning hole, the positioning device is removed after drilling, the anchor rod is inserted into the anchor rod positioning hole, and then the anchor rod is grouted to fixedly connect the anchor rod with the steel arch. According to the positioning device and the positioning method, the width requirements of different I-shaped steel can be met, the drilling angle can be accurately controlled, and therefore the installation angle of the anchor rod can be accurately controlled.
Description
BL-5456 LU501708
BACKGROUND Field of Invention The present invention belongs to the technical field of tunnel, in particular relates to a positioning device and a positioning method for anchor rod drilling of steel arch of tunnel primary support.
Background of the Invention In the existing construction method of steel arch of tunnel primary support, there are the following problems: When there is no drilling positioning device, the drilling shall be carried out directly according to the relative position. After installation of the steel arch, the air driving drilling 1s used to drill the feet-lock anchor rod or anchor hole on both sides of the steel frame according to the design angle, and then the feet-lock anchor rod (anchor pipe) are applied, the anchor rod or anchor pipe are welded to the steel arch with U-shaped reinforcement or L-shaped reinforcement.
This method is difficult to master the drilling position and angle, which easily leads to the inconsistency between drilling angle and design, 1
BL-5456 LU501708 inaccurate drilling position, difficult welding of L-shaped or U-shaped reinforcement, poor control of blanking length, poor connection quality and high safety risk.
When the welding positioning plate is used for positioning drilling, the drilling positioning plate is welded on the steel arch, and the steel plate is provided with positioning holes. The drilling rig drills through the positioning hole, and after the completion, the anchor rod or the anchor pipe 1s welded with the positioning plate. Although this method can effectively control the drilling position, the drilling angle cannot be accurately controlled.
In the existing anchor rod drilling and positioning methods, there are angle deviations, which greatly weaken the role of feet-lock anchor rod, and in serious cases, it can lead to the failure of the tunnel primary support, which is easy to cause major quality and safety accidents.
Therefore, it is necessary to provide an improved technical solution for the above-mentioned shortcomings of the prior art.
SUMMARY The present application aims to provide a positioning device and a positioning method for anchor rod drilling of steel arch of tunnel primary support, so as to solve or alleviate the problems existing in the prior art.
In order to achieve the above purpose, the present application 2
BL-5456 LU501708 provides the following technical solutions: The present application provides a positioning device for anchor rod drilling of steel arch of tunnel primary support, which comprises: a positioning mechanism, which comprises two positioning plates with a fixed plate respectively arranged on the upper and lower sides of the joint of the two positioning plates, and the two positioning plates slide to the left and right sides along the gap between the two fixed plates respectively, two guide pipes extend downward from the bottom of the positioning plate, and the two guide pipes are respectively arranged on the left and right sides of the positioning plate, the guide pipe is used for installing the anchor rod, a plurality of guide grooves are arranged on the positioning plate, and the guide grooves are arranged along the left and right directions; a fastening mechanism, which comprises a plurality of connecting rods, the connecting rods are arranged in the guide groove, the connecting rods firmly connect the positioning plate with the I-shaped steel flange plate, and the positioning plate, when adjusted, slides to the left and right sides along the guide groove under the restriction of the connecting rods, so as to adjust the distance between the two guide pipes, the connecting rod is a folding rod, one end of the connecting rod butts with the bottom surface of the I-shaped steel flange plate, and the other end of the connecting rod is provided with a fastener at the end after extending upward .
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BL-5456 LU501708 The present application also provides a positioning method for anchor rod drilling of steel arch of tunnel primary support, the positioning 1s carried out through the positioning device for anchor rod drilling of steel arch of tunnel primary support, and the method comprises the following steps: step S1, installing the steel arch: a steel arch 1s installed in the excavated tunnel, the steel arch 1s used to support the earthwork outside the tunnel, and the steel arch comprises a plurality of I-shaped steel; step S2, installing the positioning device: adjusting the distance between the two guide pipes of the positioning device for drilling the anchor rod of the primary supported steel arch of the tunnel according to the width of the I-shaped steel, installing the positioning device on the I-shaped steel flange plate after the adjustment 1s completed, and fixedly connecting the positioning mechanism with the I- shaped steel flange plate through the fastening mechanism.
specifically, sliding the two positioning plates along the guide groove to the left and right sides respectively, so that the distance between the two guide pipes can be adjusted to meet the width requirements of the I-shaped steel flange plate, by tightening the fastening bolt to compress the pressing plate and the fixed plate, the fastening bolt continues to rotate, so that the first connecting plate and the second connecting plate move upward at the 4
BL-5456 LU501708 same time, under the action of the limiting block piece of the connecting rod, the connecting rod moves upward, the support pulley of the connecting rod is further compressed with the bottom surface of the I-shaped steel flange plate.
when the inclination angle of the guide pipe 1s adjusted, and after the positioning mechanism and fastening mechanism are installed, the contact point between the articulation piece and the upper surface of the I-shaped steel flange plate is used as the fulcrum for rotation adjustment, and the adjusting piece 1s rotated clockwise or counterclockwise, adjusting the inclination angle of the guide pipe by adjusting the height of the end where the adjusting element is located.
step S3, drilling, taking the guide pipe as the anchor positioning hole, and the drilling rig drills through the positioning hole; step S4, installing the anchor rod, removing the device after drilling, inserting the anchor rod into the anchor rod positioning hole, then grouting the anchor rod and fixedly connecting the anchor rod with the steel arch.
Excellent effect The present application provides a positioning device and a positioning method for anchor rod drilling of steel arch of tunnel primary support, the width requirements of different I-shaped steel can be met, the drilling angle can be accurately controlled, and therefore the installation angle of the anchor rod can be accurately controlled.
BL-5456 LU501708 Through the setting of the positioning mechanism, the device can meet the requirements of I-shaped steel with different widths for adjustment, the length of the guide groove in the positioning mechanism is the width adjustment range; through the setting of fastening mechanism, the positioning mechanism 1s firmly connected with I-shaped steel to prevent movement during construction: through the setting of the first connecting plate and the second connecting plate, the four connecting rods can be stressed evenly during fastening, so as to improve the stability of the device in construction, moreover, the first connecting plate and the second connecting plate are cross-hinged, and when the two positioning plates move to the left and right sides, the fastener can also be adjusted accordingly; through the setting of the adjusting piece, the rotation of the threaded rod can be controlled more accurately and conveniently, combined with the dial, the lifting or lowering height of the positioning mechanism can be controlled more accurately, so as to adjust the inclination angle of the guide pipe.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 1s a top view of a positioning device in an embodiment of the present invention; 6
BL-5456 LU501708 Fig. 2 is a front view of a positioning device in an embodiment of the present invention; Fig. 3 1s a structural schematic diagram of the positioning plate of Fig. 1; Fig. 4 is a structural schematic diagram of the positioning plate and the fixing plate of Fig. 1; Fig. 5 is a detailed structural view of the adjusting piece of Fig. 1; Fig. 6 is a front view of Fig. 5; Fig. 7 is a detailed structural view of the connecting rod of Fig. 2.
Description of the figures: 1-positioning plate; 2-fixing plate; 3-guide pipe; 4-I-shaped steel flange plate; 5-connecting rod; 51-support pulley; 6- guide groove; 71- first connecting plate; 72- second plate; 8-fastening bolt; 81-pressing plate; 9-articulation piece; 10-adjusting piece; 101-rotating sleeve; 102-threaded rod; 103-rotating handle; 104-dial.
DETAILED DESCRIPTION OF THE EMBODIMENTS As shown in fig. 1 to fig. 6, the invention discloses a positioning device for anchor rod drilling of steel arch of tunnel primary support, which comprises: a positioning mechanism, which comprises two positioning plates 1, fixing plates 2 are arranged at the upper and lower sides of the joint of the two positioning plates 1, the positioning plates 1 and the fixing plate 2 are 7
BL-5456 LU501708 steel plates, and the two positioning plates 1 slide to the left and right sides along the gap between the two fixing plates 2, and guide pipes 3 extending downward are respectively arranged on the two sides of the positioning plate 1, and the two guide pipes 3 are respectively located at the left and right sides of the I-shaped steel flange plate 4, and the axes of the guide pipes 3 are vertically arranged on the I-shaped steel flange plate 4 of the steel arch, the guide pipes 3 are used to guide the installation of anchor rods, the positioning plate 1 is provided with a plurality of guide grooves 6, which are arranged along the width direction of the I-shaped steel flange plate 4, there are four guide grooves 6, the length of the guide grooves 6 is within the width adjustment range, and the width of the guide grooves 6 is greater than the diameter of the connecting rod 5.
A fastening mechanism, which comprises a plurality of connecting rods 5, which are arranged in the guide grooves 6, when the positioning plate 1 is adjusted in the horizontal direction, the positioning plate 1 is firmly connected with the I-shaped steel flange plate 4 through the connecting rod 5. When adjusting the positioning plate 1, the positioning plate 1 slides to the left and right sides along the guide groove 6 under the restriction of the connecting rod 5, so as to control and adjust the distance between the two guide pipes 3. The connecting rod 5 is a folding rod, one end of the connecting rod 5 butts with the bottom surface of the I-shaped steel flange plate 4, and a fastener 1s arranged at the tail end of the other 8
BL-5456 LU501708 end of the connecting rod 5 after the other end of the connecting rod 5 extends upwards.
Further, in order to firmly connect the positioning plate 1 with the I- shaped steel flange plate 4, the fastener comprises a first connecting plate 71 and a second connecting plate 72 which are arranged in a cross way, the middle parts of the first connecting plate 71 and the second connecting plate 72 are hinged by a fastening bolt 8, and one end of the fastening bolt 8 passes through the first connecting plate 71 and the second connecting plate 72 in turn and then butts with the center of the fixing plate 2, and through holes are provided at the end points of the first connecting plate 71 and the second connecting plate 72. Through the setting of the first connecting plate 71 and the second connecting plate 72, the four connecting rods 5 can be stressed evenly during fastening, so as to improve the stability of the device in construction, moreover, the first connecting plate 71 and the second connecting plate 72 are cross-hinged, and when the two positioning plates move to the left and right sides, the fastener can also be adjusted accordingly.
Preferably, the bottom of the fastening bolt 8 is rotationally connected with a pressing plate 81, which can increase the extrusion area between the fastening bolt 8 and the fixing plate 2, and a rubber pad is arranged on the bottom of the pressing plate 81 to increase the friction between the fastening bolt 8 and the fixing plate 2.
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BL-5456 LU501708 As shown in Fig. 7, preferably, one end of the connecting rod 5 connected with the bottom surface of the I-shaped steel flange plate 4 is a support pulley 51, the support part of the support pulley 51 is connected with the connecting rod 5, the pulley part of the support pulley 51 rolls on the bottom surface of the I-shaped steel flange plate 4, the pulley part rolling connected inside the support part, and three quarters of the pulley part is covered by the support part.
Further, in order to make the device meet different use scenarios, an angle adjustment mechanism is arranged between the positioning mechanism and the I-shaped steel flange plate 4, and the angle adjustment mechanism can adjust the inclination angle of the guide pipe 3 in the front and rear directions.
Preferably, in a specific embodiment, the inclination angle of the guide pipe 3 is the installation angle of the anchor rod, and the adjustment range of the inclination angle of the guide pipe 3 is - 60° to 60°, and the commonly used inclination angles are 0°, 20° and 40° in practical construction.
Preferably, the guide pipe 3 extends to one side of the I-shaped steel, and the distance between the two guide pipes 3 is greater than the width of the I-shaped steel, during the angle adjustment, the bottom of the guide pipe 3 is adjusted along the front and rear directions.
Further, the angle adjusting mechanism comprises an articulation
BL-5456 LU501708 piece 9 and an adjusting piece 10, which are respectively arranged at the front and rear ends of the lower part of the positioning mechanism, the upper part of the articulation piece 9 is fixedly connected with the fixing plate 2 located at the lower layer, the lower part of the articulation piece 9 is butted with the upper surface of the I-shaped steel flange plate 4, and the adjusting piece 10 adjusts the inclination angle of the guide pipe 3 by adjusting the height of its end.
In a specific embodiment, the articulation piece 9 comprises a roller in contact with the top surface of the I-shaped steel flange plate 4 and a wheel sleeve sleeved on the roller, which is fixedly connected with the fixed plate 2 located at the lower layer through a support.
Preferably, the articulation piece 9 are provided two sets, and the two sets of articulation pieces 9 are arranged in the left and right directions.
Further, the bottom of the adjusting piece 10 is provided with a rotating ball, the upper part of the rotating ball is provided with a rotating sleeve 101, the upper part of the rotating sleeve 101 is connected with a threaded rod 102, and the two fixing plates 2 are provided with threaded holes corresponding to the adjusting pieces 10. The threaded rod 102 is threaded with the fixing plate 2, and the threaded rod 102 is rolling connected with the rotating ball through the rotating sleeve 101. When the positioning mechanism is in a horizontal state, that is, when the positioning plate 1 is parallel to the I-shaped steel flange plate 4, the fixing plate 2 is 11
BL-5456 LU501708 threaded to the middle of the threaded rod 102.
Further, in order to control the rotation of the threaded rod 102 more accurately and conveniently, a rotating handle 103 is arranged on the top of the threaded rod 102, a dial 104 is arranged on the upper surface of the fixed plate 2 corresponding to the rotating handle 103, and the clamping angle between the positioning mechanism and the horizontal plane is determined by the dial 104.
Further, in another specific embodiment, a threaded section is arranged at the upper end of the connecting rod 5, the fastener is a fastening nut threaded with the threaded section, and the positioning mechanism is fixedly connected with the I-shaped steel flange plate 4 through the fastening nut.
The present invention also discloses a positioning method for anchor rod drilling of steel arch of tunnel primary support, which comprises the following steps: step S1, installing the steel arch: As the main stress structure of the primary support, the steel arch is installed soon after completing the excavation of the tunnel face, the steel arch 1s processed from I-shaped steel with certain rigidity and strength, and can bear certain surrounding rock pressure after installation. The I-shaped steel 1s manufactured by cold bending method, and the steel plate cross seam welding is added on both sides of the I-shaped steel butt joint weld.
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BL-5456 LU501708 During processing, the I-shaped steel is divided into a plurality of segments, and the segments are bolted through connecting steel plates.
step S2, installing the positioning device: adjusting the distance between the two guide pipes 3 of the positioning device for anchor rod drilling of steel arch of tunnel primary support according to the width of the I-shaped steel, installing the positioning device on the I-shaped steel flange plate 4 after the adjustment 1s completed, and fixedly connecting the positioning mechanism with the I-shaped steel flange plate 4 through the fastening mechanism.
Specifically, sliding the two positioning plates 1 along the guide groove 6 to the left and right sides respectively, so that the distance between the two guide pipes 3 can be adjusted to meet the width requirements of the I-shaped steel flange plate 4, by tightening the fastening bolt 8 to compress the pressing plate 81 and the fixing plate 2, the fastening bolt 8 continues to rotate, so that the first connecting plate 71 and the second connecting plate 72 move upward at the same time, under the action of the limiting block piece of the connecting rod 5, the connecting rod 5 moves upward, at this time, the support pulley 51 of the connecting rod 5 is compressed with the bottom surface of the I-shaped steel flange plate 4, under the action of the connecting rod 5, it is ensured that the roller of the articulation piece 9 and the rotating ball of the adjusting piece 10 always maintain point contact with the I-shaped steel flange plate 4, thus, the 13
BL-5456 LU501708 positioning device is firmly connected with the I-shaped steel flange plate
4.
In the specific construction, in order to meet the drilling requirements of different angles, the positioning device can also adjust the inclination angle of the guide pipe 5.
Specifically, after the positioning mechanism and fastening mechanism are installed, the contact point between the articulation piece 9 and the upper surface of the I-shaped steel flange plate 4 is used as the fulcrum for rotation adjustment, and the adjusting piece is rotated clockwise or counterclockwise, so as to adjust the inclination angle of the guide pipe 3 by adjusting the height of the end where the adjusting piece 1s located, under the action of the support pulley 51 of the connecting rod 5, the rotating sphere of the adjusting piece 10 always maintains point contact with the I-shaped steel flange plate 4, only the relative position between the threaded rod 102 and the fixed plate 2 changes, so that the height of the side of the adjusting piece 10 of the fixing plate 2 changes, so as to change the inclination angle of the guide pipe 3.
In the process of rotation, since there is point contact between the connecting rod 5 and the I-shaped steel flange plate 4, and between the articulation piece 9 and the I-shaped steel flange plate 4, the rotation requirements are meet. Specifically, the support part of the support pulley 51 of the connecting rod 5 rotates outside the pulley part, the wheel sleeve 14
BL-5456 LU501708 of the articulation piece 9 rotates on its roller, and the rotating sleeve 101 of the adjusting piece 10 rotates outside the rotating sphere, so as to drive the angle change of the whole positioning device.
Further, when the positioning mechanism is in a horizontal state, the fixing plate 2 is threaded to the middle of the threaded rod 102, and the rotating handle 103 points to the 0 scale of the dial 104; when the rotating handle 103 is turned clockwise to a certain scale, the height of the end where the adjusting piece 10 located is raised, and the guide pipe 3 is inclined to the rear side by an angle corresponding to the scale.
Further, in another specific embodiment, under the action of the self- gravity of the positioning mechanism, the lower end of the adjusting piecel0 is always in contact with the I-shaped steel flange plate 4, at this time, rotating the rotating handle 103 counterclockwise to a certain scale, the height of the end where the adjusting piece 10 located is reduced, and the guide pipe 3 is inclined to the front by an angle corresponding to the scale.
step S3, drilling, taking the guide pipe 3 as the anchor rod positioning hole, and the drilling rig drills through the positioning hole; step S4, installing the anchor rod, removing the device after drilling, inserting the anchor rod into the anchor rod positioning hole, then grouting the anchor rod, after grouting, using U-shaped or L-shaped reinforcement to connect the anchor rod to the steel arch to prevent the primary support
BL-5456 LU501708 from sinking.
Generally, the anchor rod and steel arch are welded.
Preferably, in step S4, grout is injected into the anchor rod through the high-pressure grouting pump, and a grout stop valve is installed on the anchor rod after the grouting is completed. 16
Claims (10)
1. A positioning device for anchor rod drilling of steel arch of tunnel primary support, characterized in that the positioning device comprises: a positioning mechanism, which comprises two positioning plates with a fixed plate respectively arranged on the upper and lower sides of the joint of the two positioning plates, and the two positioning plates slide to the left and right sides along the gap between the two fixing plates respectively, two guide pipes extend downward from the bottom of the positioning plate, and the two guide pipes are respectively arranged on the left and right sides of the positioning plate, the guide pipe is used for installing the anchor rod, a plurality of guide grooves are arranged on the positioning plate, and the guide grooves are arranged along the left and right directions; a fastening mechanism, which comprises a plurality of connecting rods, the connecting rods are arranged in the guide grooves, the connecting rods firmly connect the positioning plate with the I-shaped steel flange plate, and the positioning plate, when adjusted, slides to the left and right sides along the guide grooves under the restriction of the connecting rods, so as to adjust the distance between the two guide pipes, the connecting rod is a folding rod, one end of the connecting rod butts with the bottom surface of the I-shaped steel flange plate, and a fastener is arranged at the tail end of the other end of the connecting rod after the other end of the connecting 17
BL-5456 LU501708 rod extends upwards.
2. The positioning device for anchor rod drilling of steel arch of tunnel primary support according to claim 1, characterized in that the fastener comprises a first connecting plate and a second connecting plate which are arranged in a cross way, and the first connecting plate and the second connecting plate are hinged through a fastening bolt, and one end of the fastening bolt passes through the first connecting plate and the second connecting plate in turn and then butts with the center of the fixing plate, through holes are arranged at the end points of the first connecting plate and the second connecting plate, the connecting rod successively passes through the guide groove and the through hole, and a limiting block piece 1s arranged at the top of the connecting rod.
3. The positioning device for anchor rod drilling of steel arch of tunnel primary support according to claim 2, characterized in that the bottom of the fastening bolt is provided with a pressing plate, and the bottom surface of the pressing plate 1s provided with a layer of rubber pad.
4. The positioning device for anchor rod drilling of steel arch of tunnel primary support according to claim 1, characterized in that one end of the connecting rod connected with the bottom surface of the I-shaped steel 18
BL-5456 LU501708 flange plate is a support pulley, the support part of the support pulley is connected with the connecting rod, and the pulley part of the support pulley rolls on the bottom surface of the I-shaped steel flange plate.
5. The positioning device for anchor rod drilling of steel arch of tunnel primary support according to claim 1, characterized in that an angle adjustment mechanism is arranged between the positioning mechanism and the I-shaped steel flange plate, the angle adjustment mechanism adjusts the inclination angle of the guide pipe in the front and rear directions, and the inclination angle of the guide pipe is the installation angle of the anchor rod, the inclination angle adjustment range of the guide pipe is -60° to 60°.
6. The positioning device for anchor rod drilling of steel arch of tunnel primary support according to claim 5, characterized in that the angle adjusting mechanism comprises an articulation piece and an adjusting piece, the articulation piece and the adjusting piece are respectively arranged at the front and rear ends of the lower part of the positioning mechanism, and the upper part of the articulation piece is fixedly connected with the fixing plate at the lower layer, the lower part of the articulation piece is butted with the upper surface of the I-shaped steel flange plate, and the adjusting piece adjusts the inclination angle of the guide pipe in the front and rear directions by adjusting the height of its end.
19
BL-5456 LU501708
7. The positioning device for anchor rod drilling of steel arch of tunnel primary support according to claim 6 , characterized in that the bottom of the adjusting piece is provided with a rotating ball, the upper part of the rotating ball is sleeved with a rotating sleeve, the upper part of the rotating sleeve is connected with a threaded rod, and the two fixing plates are provided with threaded holes corresponding to the adjusting piece, the threaded rod is threaded with the fixed plate, and the threaded rod is rotationally connected with the rotating ball through the rotating sleeve.
8. The positioning device for anchor rod drilling of steel arch in primary support of the tunnel according to claim 7, characterized in that a rotating handle 1s arranged on the top of the threaded rod, a dial is arranged on the upper surface of the fixed plate corresponding to the rotating handle, and the inclination angle of the guide pipe is determined by the dial.
9. The positioning device for drilling the anchor rod of the primary supported steel arch of the tunnel according to claim 1, characterized in that a threaded section is arranged at the upper end of the connecting rod, the fastener is a fastening nut which is threadedly connected with the threaded section, and the positioning mechanism is firmly connected with the I-shaped steel flange plate by tightening the fastening nut.
BL-5456 LU501708
10. A positioning method for anchor rod drilling of steel arch of tunnel primary support, characterized in that the positioning is carried out through the positioning device for anchor rod drilling of steel arch of tunnel primary support according to any one of claims 1 to 9, and the method comprises the following steps: step S1, installing the steel arch: a steel arch is installed in the excavated tunnel, the steel arch is used to support the earthwork outside the tunnel, and the steel arch comprises a plurality of I-shaped steel; step S2, installing the positioning device: adjusting the distance between the two guide pipes of the positioning device for drilling the anchor rod of steel arch of tunnel primary support according to the width of the I-shaped steel, installing the positioning device on the I-shaped steel flange plate after the adjustment is completed, and fixedly connecting the positioning mechanism with the I-shaped steel flange plate through the fastening mechanism, specifically, sliding the two positioning plates along the guide groove to the left and right sides respectively, so that the distance between the two guide pipes can be adjusted to meet the width requirements of the I-shaped steel flange plate, by tightening the fastening bolt to compress the pressing plate and the fixing plate, the fastening bolt continues to rotate, so that the first 21
BL-5456 LU501708 connecting plate and the second connecting plate move upward at the same time, under the action of the limiting block piece of the connecting rod, the connecting rod moves upward, the support pulley of the connecting rod is further compressed with the bottom surface of the I-shaped steel flange plate, when the inclination angle of the guide pipe is adjusted, after the positioning mechanism and fastening mechanism are installed, the contact point between the articulation piece and the upper surface of the I-shaped steel flange plate is used as the fulcrum for rotation adjustment, and the adjusting piece is rotated clockwise or counterclockwise, so as to adjust the inclination angle of the guide pipe by adjusting the height of the end where the adjusting piece 1s located; step S3, drilling, taking the guide pipe as the anchor positioning hole, and the drilling rig drills through the positioning hole; step S4, installing the anchor rod, removing the device after drilling, inserting the anchor rod into the anchor rod positioning hole, then grouting the anchor rod and fixedly connecting the anchor rod with the steel arch.
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Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110489337.3A CN112901077B (en) | 2021-05-06 | 2021-05-06 | Positioning device and positioning method for tunnel primary support steel arch anchor rod drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU501708B1 true LU501708B1 (en) | 2022-09-26 |
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ID=76108929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU501708A LU501708B1 (en) | 2021-05-06 | 2022-03-24 | Positioning device and positioning method for anchor rod drilling of steel arch of tunnel primary support |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112901077B (en) |
| LU (1) | LU501708B1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931668B (en) * | 2021-10-13 | 2023-09-15 | 广西新发展交通集团有限公司 | Positioning device for tunnel primary support steel arch stock drilling |
| CN114101732B (en) * | 2021-10-28 | 2022-08-12 | 宁波工程学院 | Tunnel is first to be propped up connecting plate construction equipment between steel bow member |
| CN114991824B (en) * | 2022-08-08 | 2023-04-11 | 中铁九局集团第七工程有限公司 | Fixing device for controlling angle of advanced small guide pipe in tunnel and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2208157C1 (en) * | 2002-01-03 | 2003-07-10 | Янченко Николай Леонович | Guide device for logging cable or wire-rope |
| CN106351572B (en) * | 2016-09-26 | 2019-06-25 | 中国一冶集团有限公司 | Top plate positioning device and drilling equipment, grouting device and method including it |
| CN207245714U (en) * | 2017-10-09 | 2018-04-17 | 中国铁建重工集团有限公司 | A kind of hob holder replaces positioner and shield machine |
| CN207905843U (en) * | 2018-02-02 | 2018-09-25 | 中交三航局第三工程有限公司 | A kind of Simple tunnel steel arch frame lock foot anchoring stock positioning device |
| RU2707761C1 (en) * | 2018-07-19 | 2019-11-29 | Публичное акционерное общество "Татнефть" имени В.Д. Шашина | Device for extraction of broken rods from well |
| CN208473891U (en) * | 2018-07-26 | 2019-02-05 | 中国建筑第七工程局有限公司 | Tunnel steel arch frame junction steel plate fast accurate positioning device |
| CN209195452U (en) * | 2018-12-07 | 2019-08-02 | 中铁二十一局集团第五工程有限公司 | Lock foot anchor tube and steel arch holder connection device in tunnel |
| CN211666752U (en) * | 2019-12-30 | 2020-10-13 | 中国二冶集团有限公司 | Tunnel lock foot stock positioner |
| CN212428871U (en) * | 2020-06-10 | 2021-01-29 | 中交一公局集团有限公司 | Positioning device for steel arch frame connecting plate |
-
2021
- 2021-05-06 CN CN202110489337.3A patent/CN112901077B/en active Active
-
2022
- 2022-03-24 LU LU501708A patent/LU501708B1/en active IP Right Grant
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| Publication number | Publication date |
|---|---|
| CN112901077B (en) | 2021-07-06 |
| CN112901077A (en) | 2021-06-04 |
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