Tunnel system anchor rod positioning and guiding auxiliary device and using method

Abstract

The invention discloses a tunnel system anchor rod positioning and guiding auxiliary device which comprises a positioning and guiding box, first telescopic arms are arranged on the two sides of the positioning and guiding box, clamping grooves are formed in the ends of the first telescopic arms, the clamping grooves are inserted into steel arch flange plates at the two ends of the device to be fixed, and telescopic pipes are fixedly inserted into the positioning and guiding box. A second telescopic arm is arranged at the bottom of the positioning guide box and moves with the axis of the telescopic pipe as the rotating center, an angle adjusting mechanism used for adjusting the rotating angle of the second telescopic arm is arranged between the positioning guide box and the second telescopic arm, a positioning marking part is installed at the telescopic end of the second telescopic arm, and the positioning marking part is used for positioning the system anchor rod. A horizontal positioning device is mounted on the side wall of the positioning guide box. The tunnel system anchor rod positioning and guiding auxiliary device is suitable for positioning system anchor rods with different intervals, meanwhile, the requirement that the driving angle is perpendicular to the rock surface is met, and in conclusion, the universality, the adaptability and the system anchor rod drilling qualification rate are improved.

Description

Technical Field

[0001] The present invention relates to the field of tunnel construction, and particularly to a positioning and guiding auxiliary device for tunnel system bolts and a using method thereof. Background Art

[0002] The installation position of the system bolts is generally between two sets of steel arch frames and arranged in a plum blossom shape at a certain interval. The system bolts are required to be perpendicular to the rock surface. At present, the positioning of the system bolts generally adopts an artificial positioning method, which results in a large deviation in the spacing of the system bolts, does not conform to the design, and may even cause the failure of the tunnel support structure. In terms of guiding the system bolts, it is generally also guided by manual feeling, which often causes the angle between the system bolts and the rock surface not to be perpendicular, resulting in the deviation of the bolts and affecting the force of the system bolts, and even may cause the failure of the tunnel support structure and fail to achieve the support effect. Summary of the Invention

[0003] The purpose of the present invention is to provide a positioning and guiding auxiliary device for tunnel system bolts and a using method thereof to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A positioning and guiding auxiliary device for tunnel system bolts, including a positioning and guiding box. Telescopic arms I are arranged on both sides of the positioning and guiding box. A clamping groove is arranged at the end of the telescopic arm I, and the clamping groove is inserted into the flange plates of the steel arch frames at both ends of the device for fixation. A telescopic tube is fixedly inserted on the positioning and guiding box. A telescopic arm II is arranged at the bottom of the positioning and guiding box, and the telescopic arm II moves with the axis of the telescopic tube as the rotation center. An angle adjustment mechanism for adjusting the rotation angle of the telescopic arm II is arranged between the positioning and guiding box and the telescopic arm II. A positioning marking component is installed at the telescopic end of the telescopic arm II, and the positioning marking part is used for positioning the system bolts. A horizontal positioning device is installed on the side wall of the positioning and guiding box.

[0005] Preferably, the angle adjustment mechanism includes a positioning card arranged at the tail end of the telescopic arm II. A plurality of positioning grooves are arranged at the bottom of the positioning and guiding box, and the positioning card can be inserted into the positioning groove to limit the angle of the telescopic arm II.

[0006] Preferably, the telescopic arm II includes a sleeve III. The positioning card is arranged on the sleeve III. The tail end of the sleeve III is fixed with an origin tube, and the port of the origin tube faces upward and is inserted into the positioning and guiding box for movable setting. The front end of the sleeve III is sleeved with a rod body II and the rod body II is locked by an L-shaped quick tightening wrench bolt arranged on the sleeve III. The positioning marking part is installed at the outer end of the rod body II.

[0007] Preferably, the positioning marking part includes a pen clip fixed at the outer end of the rod body II, and a marking pen is installed on the pen clip, and the clamping position of the marking pen relative to the pen clip is adjustable.

[0008] Preferably, the first telescopic arm includes a first sleeve fixed to the side wall of the positioning and guiding box. One end of the first sleeve is inserted with a movable rod body one, and the rod body one is locked by an L-shaped quick-tightening wrench bolt arranged on the first sleeve.

[0009] Preferably, the telescopic pipe includes a guiding pipe and a second sleeve. The guiding pipe is fixedly inserted on the positioning and guiding box. The second sleeve is movably sleeved on the guiding pipe and locks the guiding pipe through an L-shaped quick-tightening wrench bolt arranged on the second sleeve.

[0010] Preferably, the guiding pipe and the first sleeve are reinforced by a support rod.

[0011] Preferably, the horizontal positioning device is a tubular spirit level.

[0012] A method for positioning and guiding tunnel system bolts. The above-mentioned tunnel system bolt positioning and guiding auxiliary device includes the following steps:

[0013] The first step: Preparation work: Use a measuring instrument to position and loft any system bolt in this cycle.

[0014] The second step: Install the positioning device: The second sleeve of this device can be fixed and placed at the positioning point according to the height of the arch rib section steel through the L-shaped quick-tightening wrench bolt. The clamping grooves are respectively clamped on the flange plates of the working side steel arch, ensuring that the first sleeve does not move at the positioning point. By adjusting the up and down of the left and right clamping grooves, make the bubble of the tubular spirit level centered, and then fix this device through the L-shaped quick-tightening wrench bolt.

[0015] The third step: Positioning of system bolts: Insert the origin pipe into the guiding pipe, and according to the orientation of the system bolt to be positioned, insert the positioning card into the positioning groove, and position the position of the adjacent system bolt by adjusting the length of the rod body two in the third sleeve. Suppose the distance between adjacent system bolts in the up and down, left and right directions is 2L, and the distance between adjacent system bolts in the southeast, southwest, northeast, and northwest directions is L. Mark the position of the system bolt on the initial shotcrete through the marker pen on the pen clip. The pen clip can adjust and fix the position of the marker pen to ensure that the marker pen can touch the initial shotcrete. After the positioning of adjacent system bolts is completed, remove the origin pipe from the guiding pipe.

[0016] The fourth step: Guiding drilling of system bolts: When the bubble of the tubular spirit level is centered and this device is fixed, insert the drill bit and drill pipe of the drill into the guiding pipe for drilling. After the drilling depth reaches the design requirement, loosen the L-shaped quick-tightening wrench bolt, remove this device, install it at the next positioning point, and perform guiding drilling and positioning of adjacent system bolts.

[0017] The fifth step: Repeat the above steps until the positioning and drilling of all system bolts involved in this cycle are completed.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] This tunnel system bolt drilling positioning and guiding auxiliary device and its usage method can meet steel arch frames with different spacings during the positioning and guiding construction of tunnel system bolt drilling; it is applicable to steel arch frames with different types of section steels as skeletons, and is also applicable to the positioning of system bolts with different spacings. At the same time, it ensures the requirement that the driving angle is perpendicular to the rock surface. In summary, it improves the versatility, adaptability, and qualified rate of system bolt drilling, is beneficial to the support of surrounding rock, avoids the risk of collapse, and at the same time improves the construction accuracy and efficiency, avoids rework, and saves labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the installation position of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the positioning and guiding box in the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the second telescopic arm and the positioning marking component in the present invention;

[0024] Figure 5 It is a schematic diagram of the layout of system bolts in the present invention.

[0025] In the figure: 1. Positioning and guiding box; 2. First sleeve; 3. First rod body; 4. Card slot; 5. Guide tube; 6. Second sleeve; 7. Support rod; 8. Pipe level; 9. Positioning groove; 10. Third sleeve; 11. Second rod body; 12. Pen clip; 13. Marking pen; 14. Origin tube; 15. Positioning card. DETAILED DESCRIPTION OF THE INVENTION

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Refer to Figure 1 、 3For Nos. 4, select the card slot 4, L-shaped quick-tightening wrench bolt, rod body 1-3, sleeve 1-2, pipe level 8, positioning and guiding box 1, support rod 7, guiding pipe 5, sleeve 2-6, positioning groove 9, origin pipe 14, positioning clamp 15, sleeve 3-10 (with scale), rod body 2-11 (with scale), pen clip 12, and marker pen 13 as the main materials. Sleeves 1-2 are installed on both sides of the positioning and guiding box 1. The rod body 1-3 is inserted into the sleeve 1-2 and relatively fixed using an L-shaped quick-tightening wrench bolt. The other end of the rod body 1-3 is connected to the card slot 4. An L-shaped quick-tightening wrench bolt is installed in the card slot 4 to fix the connection between this device and the flange of the steel arch. The guiding pipe 5 is installed on the back surface (towards the rock surface) of the positioning and guiding box 1. The sleeve 2-6 is installed at the end of the guiding pipe 5 and relatively fixed using an L-shaped quick-tightening wrench bolt. The support rod 7 is effectively connected to the sleeve 1-2 on both sides of the guiding pipe 5. The pipe level 8 is installed perpendicular to the guiding pipe 5. On the front surface (away from the rock surface) of the positioning and guiding box 1, a positioning groove 9 is provided at intervals of 45° in the clockwise direction. The positioning mechanism consists of the origin pipe 14, positioning clamp 15, sleeve 3-10 (with scale), rod body 2-11 (with scale), pen clip 12, and marker pen 13. One end of the sleeve 3-10 is connected to the origin pipe 14. The diameter of the origin pipe 14 is slightly smaller than the inner wall of the guiding pipe 5 and can be freely inserted into the guiding pipe 5. A positioning clamp 15 (the positioning clamp 15 should be compatible with the positioning groove 9 on the positioning and guiding box 1) is provided on the sleeve 3-10 facing the rock surface. The rod body 2-11 is inserted into the sleeve 3-10 and relatively fixed using an L-shaped quick-tightening wrench bolt. A pen clip 12 is provided at the other end of the rod body 2-11, and a marker pen 13 can be installed on the pen clip 12.

[0028] Reference Figure 1 and Figure 5, the system rock bolts are generally set in the middle of every two steel arch frames and arranged in a plum blossom pattern at a certain interval. The system rock bolts are required to be perpendicular to the rock surface. When using this device for the positioning and guiding of system rock bolts, for the system rock bolts in this cycle, only the first system rock bolt needs to be positioned by a measuring instrument, and for the positioning of other system rock bolts, the positioning of other rock bolts in this cycle can be completed relying on this device. Before using this device, first use a measuring instrument to position and loft any one system rock bolt in this cycle. Place the second sleeve 6 of this device (the second sleeve 6 can be fixed by the L-shaped quick tightening wrench bolt according to the height of the arch frame section steel) on the positioning point, and then respectively clamp the clamping grooves 4 on the flange plates of the steel arch frame on the operation side to ensure that the second sleeve 6 does not move at the positioning point. By adjusting the up and down positions of the left and right clamping grooves 4, make the bubble of the tube level 8 centered, and fix this device with the L-shaped quick tightening wrench bolt. When in use for positioning, insert the origin tube 14 of the positioning mechanism into the guiding tube 5, and according to the orientation of the system rock bolt to be positioned, insert the positioning card 15 into the positioning groove 9, and then adjust the length of the rod body two 11 in the third sleeve 10 to position the positions of adjacent system rock bolts. Assuming the spacing between system rock bolts is L, then the spacing L1 between adjacent system rock bolts in the up and down, left and right (east, south, west, north directions) is 2L, and the spacing L2 between adjacent system rock bolts in the southeast, southwest, northeast, and northwest directions is L. Mark the positions of the system rock bolts on the initial shotcrete with the marker pen 13 on the pen clip 12. The pen clip 12 can adjust and fix the position of the marker pen 13 to ensure that the marker pen 13 can touch the initial shotcrete. After the positioning of adjacent system rock bolts is completed, remove the positioning mechanism. When in use for guiding, when the bubble of the tube level 8 is centered and this device is fixed, only need to insert the drill bit and drill pipe of the drill into the guiding tube 5 to drill holes. After the drilling depth reaches the design requirements, loosen the L-shaped quick tightening wrench bolt, remove this device, install it at the next positioning point, and conduct guiding drilling and the positioning of adjacent system rock bolts until the positioning and drilling of all system rock bolts involved in this cycle are completed.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel system anchor bolt positioning and guiding auxiliary device, comprising a positioning and guiding box (1), characterized in that: A telescopic arm 1 is arranged on both sides of the positioning guide box (1), and a slot (4) is arranged at the end of the telescopic arm 1. The slot (4) is inserted into the steel arch frame flange plates at both ends of the device for fixing. A telescopic tube is fixedly inserted on the positioning guide box (1), and a telescopic arm 2 is arranged at the bottom of the positioning guide box (1). The telescopic arm 2 moves with the axis of the telescopic tube as the rotation center. An angle adjustment mechanism for adjusting the rotation angle of the telescopic arm 2 is arranged between the positioning guide box (1) and the telescopic arm 2. A positioning mark component is installed at the telescopic end of the telescopic arm 2. The positioning mark part is used to position the system anchor rod. A horizontal positioning device is installed on the side wall of the positioning guide box (1).

2. The tunnel system anchor positioning and guiding auxiliary device according to claim 1, characterized in that: The angle adjustment mechanism comprises a positioning card (15) arranged on the rear end of the second telescopic arm. The bottom of the positioning guide box (1) is provided with a plurality of positioning slots (9). The positioning card (15) can be inserted into the positioning slots (9) to limit the angle of the second telescopic arm.

3. The tunnel system anchor positioning and guiding auxiliary device according to claim 2, characterized in that: The telescopic arm 2 comprises a sleeve 3 (10), a positioning card (15) is arranged on the sleeve 3 (10), an origin tube (14) is fixed to the rear end of the sleeve 3 (10), the end of the origin tube (14) is upwardly directed and inserted into the positioning guide box (1) for movement, a rod body 2 (11) is sleeved on the front end of the sleeve 3 (10) and the rod body 2 (11) is locked by an L-shaped quick tightening wrench bolt arranged on the sleeve 3 (10), and a positioning mark portion is installed at the outer end of the rod body 2 (11).

4. The tunnel system anchor positioning and guiding auxiliary device according to claim 3 is characterized in that: The positioning marking part comprises a pen clip (12) fixed to the outer end of the second rod body (11), a marking pen (13) is mounted on the pen clip (12), and the clamping position of the marking pen (13) relative to the pen clip (12) is adjustable.

5. The tunnel system anchor positioning and guiding auxiliary device according to claim 1, characterized in that: The telescopic arm 1 comprises a sleeve 1 (2) fixed to the side wall of the positioning guide box (1), a movable rod body 1 (3) is inserted into the end of the sleeve 1 (2) and the rod body 1 (3) is locked by an L-shaped quick tightening wrench bolt arranged on the sleeve 1 (2).

6. The tunnel system anchor positioning and guiding auxiliary device according to claim 5, characterized in that: The telescopic tube comprises a guide tube (5) and a second sleeve (6); the guide tube (5) is fixedly plugged into the positioning guide box (1); the second sleeve (6) is movably sleeved on the guide tube (5) and is locked with an L-shaped quick-tightening wrench bolt provided on the second sleeve (6).

7. The tunnel system anchor positioning and guiding auxiliary device according to claim 6, characterized in that: The guide tube (5) and the sleeve tube (2) are reinforced by a support rod (7).

8. The tunnel system anchor positioning and guiding auxiliary device according to claim 1, characterized in that: The horizontal positioning device is a tube level (8).

9. A method for positioning and guiding anchor rods in a tunnel system, characterized in that: The tunnel system anchor positioning and guiding auxiliary device as described in claims 1 to 8 is used, comprising the following steps: Step 1: Preparation: Use measuring instruments to locate and stake out any system anchor within this cycle. Step 2: Install the positioning device: Place the second sleeve (6) of the device (the second sleeve (6) can be fixed by L-shaped quick-tightening wrench bolts according to the height of the arch steel) on the positioning point, and clamp the slots (4) on the flange plate of the steel arch on the working side to ensure that the first sleeve (2) does not move at the positioning point. By adjusting the left and right slots (4) up and down, the bubble of the tube level (8) is centered, and then the device is fixed by L-shaped quick-tightening wrench bolts. Step 3: System anchor bolt positioning (except the first one): insert the origin tube (14) into the guide tube (5), and insert the positioning card (15) into the positioning slot (9) according to the orientation of the system anchor bolt to be positioned. Position the adjacent system anchor bolts by adjusting the length of the rod body (11) in the sleeve (10). Assume that the spacing between adjacent system anchor bolts in the upper, lower, left, right (east, south, west, and north directions) is 2L, and the spacing between adjacent system anchor bolts in the southeast, southwest, northeast, and northwest directions is L, mark the position of the system anchor rod on the initial sprayed concrete with the marker pen (13) on the pen clip (12), and the pen clip (12) can adjust the position of the fixed marker pen (13) to ensure that the marker pen (13) can touch the initial sprayed concrete. After the adjacent system anchor rods are positioned, the origin tube (14) is removed from the guide tube (5). Step 4: Guided drilling of system anchor bolts: When the bubble of the tube level (8) is centered and the device is fixed, insert the drill bit and drill rod of the drilling rig into the guide tube (5) to drill holes. When the drilling depth reaches the design requirement, loosen the L-shaped quick-tightening wrench bolt, remove the device, install it to the next positioning point, and carry out guided drilling and adjacent system anchor bolt positioning. Step 5: Repeat the above steps until the system anchor positioning and drilling involved in this cycle are completed.

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