CN107014361A - A kind of tunnel/quick scatterplot positioner of tunnel face borehole and method - Google Patents

Abstract

The invention discloses a rapid scatter-point positioning device for blastholes on the face of a tunnel/roadway, which comprises a top seat connected to one end of a telescopic rod, the other end of the telescopic rod to a universal ball seat, a universal ball head and a universal ball The universal ball head and the universal ball seat are fixed by the fastening knob, the universal ball head is connected with the collimated laser, and the laser emission direction of the collimated laser is provided with a laser diffusion sheet and a focusing lens in sequence. A blasthole positioning map is preset on the diffuser, several brackets are evenly distributed on the top seat, and magnets are arranged at the ends of the brackets. The blasthole positioning map includes blasthole positioning points and positioning reference points corresponding to the tunnel surface reference points on the tunnel face. Also disclosed is a method for quickly scatter-point positioning blastholes on the face of a tunnel/roadway. The invention can realize one-time rapid positioning of all blastholes; the equipment is simple to install, easy to shift, avoids the cumulative error of manual measurement and positioning, and is easy to operate; the cost is low, DC battery, the current is extremely weak and the energy consumption is low.

Description

A device and method for quickly scatter-point positioning blastholes on the face of a tunnel/roadway

technical field

The invention belongs to the technical field of tunnel (roadway) engineering construction, and in particular relates to a device for quickly scatter-point positioning of blastholes on the face of a tunnel/roadway, and also relates to a method for rapidly scatter-pointing positioning of blastholes on the face of a tunnel/roadway, which is suitable for use in tunnels. (lane) road blasthole excavation.

Background technique

In tunnel (lane) drilling and blasting excavation construction, there are often tens to hundreds of blastholes on the face of the tunnel. At present, manual drawing ruler measurement and positioning method is mostly used. Measurement and positioning are carried out one by one according to the blasthole layout design drawing, which is time-consuming and labor-intensive, and is easy to produce The positioning error caused by human factors leads to unsatisfactory blasting effect and causes the phenomenon of overcut or undercut in the roadway profile.

Contents of the invention

The object of the present invention is to solve the problems existing in the prior art, to provide a tunnel/roadway face blasthole rapid scatter point positioning device, and to provide a tunnel/roadway face blasthole rapid scatter point positioning method.

Above-mentioned purpose of the present invention is achieved through the following technical solutions:

A rapid scatter point positioning device for blastholes on the face of a tunnel/roadway, including a top seat, the top seat is connected to one end of a telescopic rod, the other end of the telescopic rod is connected to a universal ball seat, and the universal ball head is adapted to the universal ball seat. The universal ball head and the universal ball seat are fixed by the fastening knob, and the universal ball head is connected with the collimated laser. The laser emission direction of the collimated laser is arranged in turn with a laser diffusion sheet and a focusing lens. The laser diffusion sheet is preset There is a blasthole positioning map, several brackets are evenly distributed on the top seat, and magnets are arranged at the ends of the brackets. The blasthole positioning map includes blasthole positioning points and positioning reference points corresponding to the tunnel face reference points on the tunnel face.

A method for quickly scatter-pointing blastholes on the face of a tunnel/roadway, comprising the following steps:

Step 1. Design the blasthole location map according to the actual requirements of the blasthole distribution, and design the laser diffuser according to the blasthole location map;

Step 2. Install the laser diffuser on the front end of the collimated laser, and set the focusing lens on the front end of the laser diffuser;

Step 3. Adsorb the magnet at the end of the bracket to the roof U-shaped steel bracket or steel mesh of the tunnel/roadway, adjust the position of the magnet and the length of the telescopic rod, so that the collimating laser is located on the center line of the tunnel/roadway;

Step 4. Turn on the power of the collimating laser, irradiate the laser rays, and project the blasthole location map on the face of the tunnel;

Step 5. By adjusting the universal ball head and the focusing lens, the positioning reference point on the blasthole positioning map is projected on the face face reference point on the tunnel surface, and the universal ball head and the universal ball seat are fixed by tightening the knob relative position between

Step 6. Drill blastholes one by one at the blasthole projection point on the blasthole location map at the blasthole location point on the drill face.

The distance between the above-mentioned collimated laser and the face of the face is 10-15 meters.

Compared with the prior art, the present invention has the following advantages:

1) One-time rapid positioning of all blastholes can be realized;

2) The equipment is easy to install, easy to move, avoids the cumulative error of manual measurement and positioning, and is easy to operate;

3) Low cost, DC battery, extremely weak current and low energy consumption.

Description of drawings

Fig. 1 is the overall layout schematic diagram of device of the present invention;

Fig. 2 is a schematic sectional view at A1-A1 in Fig. 1;

Fig. 3 is the structural representation of device of the present invention;

Fig. 4 is a view from A2-A2 in Fig. 3 .

In the figure: 1-collimated laser; 2-laser diffuser; 3-focusing lens; 4-universal ball head; 5-fastening knob; 6-telescopic rod; -magnet; 10-laser ray; 11-tunnel/roadway; 12-face; Palm face datum point; 15-universal ball seat.

detailed description

The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 4, a rapid scatter point positioning device for blastholes on the face of a tunnel/roadway includes a top seat 7 connected to one end of a telescopic rod 6, and the other end of the telescopic rod 6 is connected to a universal ball seat 15 , the universal ball head 4 is adapted to the universal ball seat 15, the universal ball head 4 and the universal ball seat 15 are fixed by the fastening knob 5, the universal ball head 4 is connected with the collimating laser 1, and the collimating laser 1 is provided with a laser diffusion sheet 2 and a focusing lens 3 in sequence, the laser diffusion sheet 2 is preset with a blast hole positioning map, and several brackets 8 are evenly distributed on the top seat 7, and a magnet 9 is arranged at the end of the bracket 8. The blasthole location map includes blasthole location points and location reference points corresponding to the face reference points on the face 12 .

A method for quickly scatter-pointing blastholes on the face of a tunnel/roadway, comprising the following steps:

Step 1. Design the blasthole location map according to the actual requirements of the blasthole distribution, and design the laser diffuser 2 according to the blasthole location map;

Step 2, install the laser diffuser 2 on the front end of the collimated laser 1, and set the focusing lens 3 on the front end of the laser diffuser 2;

Step 3. Adsorb the magnet 9 at the end of the bracket 8 on the roof U-shaped steel bracket or steel mesh of the tunnel/roadway, adjust the position of the magnet 9 and the length of the telescopic rod 6, so that the collimating laser 1 is located on the center line of the tunnel/roadway;

Step 4, turn on the power of the collimating laser 1, irradiate the laser ray 10, and project the blasthole location map on the tunnel face 12;

Step 5. By adjusting the universal ball head 4 and the focusing lens 3, the positioning reference point on the blasthole positioning map is projected on the tunnel face reference point on the tunnel surface 12, and the universal ball head 4 is fixed by tightening the knob 5 The relative position with the universal ball seat 15;

Step 6. Drilling blastholes one by one at the blasthole projection points on the face 12 at the blasthole positioning points on the blasthole location map.

The distance between the collimated laser 1 and the face 12 is 10-15 meters.

According to the blasthole positioning map, a structured light DOE (an optical diffraction element) is made, and then a laser diffusion sheet 2 is made, and the laser diffusion sheet 2 is installed on the front end of the collimated laser 1, and the front end of the laser diffusion sheet 2 is provided with a focusing convex lens 3. The laser ray 10 emitted by the collimated laser 1 is diffracted by the laser diffuser 2 and then adjusted by the focusing lens 3 to be projected to obtain the blasthole projection point.

As a preferred solution, the top base 7 is connected to three support rods 8 , and magnets 9 are provided at the ends of the three support rods 8 . There are three positioning reference points on the blasthole positioning map and they are not collinear, and there are three tunnel face reference points on the tunnel face, which are respectively the first tunnel surface reference point 14a, the second tunnel surface reference point 14b, The third palm surface reference point 14c, the first palm surface reference point 14a, the second palm surface reference point 14b, and the third palm surface reference point 14c correspond to the three positioning reference points respectively.

When in use, install the collimated laser 1 on the center line of the tunnel/roadway 10 to 15 meters behind the tunnel face 12, firmly attach the three magnets 9 to the roof U-shaped steel bracket or steel mesh of the tunnel/roadway, and adjust the magnets 9 positions and the length of the telescopic rod 6, so that the collimated laser 1 is on or near the centerline of the tunnel/roadway. Turn on the power of the collimated laser 1, irradiate the laser ray 10, project the blasthole positioning point on the face 12 to form the blasthole projection point 13, and adjust the universal ball head 4 and the focusing lens 3 to place the blasthole location on the blasthole location map. The projection points of the three positioning reference points are respectively aligned with the first palm surface reference point 14a, the second palm surface reference point 14b, and the third palm surface reference point 14c, and tighten the fastening knob 5 after alignment. Drill holes one by one at the blasthole projection point 13 positions.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Claims (3)

1. A rapid scatter point positioning device for blastholes on the face of a tunnel/roadway, including a top seat (7), characterized in that the top seat (7) is connected to one end of the telescopic rod (6), and the other end of the telescopic rod (6) is connected to the The universal ball seat (15) is connected, the universal ball head (4) is adapted to the universal ball seat (15), and the universal ball head (4) and the universal ball seat (15) are connected by the fastening knob (5 ) is fixed, the universal ball head (4) is connected with the collimated laser (1), the laser emission direction of the collimated laser (1) is provided with a laser diffusion sheet (2) and a focusing lens (3), and the laser diffusion sheet ( 2) A blasthole positioning map is preset on the top seat (7), and several brackets (8) are evenly distributed on the top seat (7), and magnets (9) are arranged at the ends of the brackets (8). (12) The positioning datum point corresponding to the face datum point on the face. 2. A method for quickly scatter location of blastholes on the face of tunnel/roadway by utilizing the device according to claim 1, characterized in that, comprising the following steps: Step 1. Design the blasthole positioning map according to the actual requirements of the blasthole distribution, and design the laser diffuser according to the blasthole location map (2); Step 2. Install the laser diffuser (2) on the front end of the collimated laser (1), and set the focusing lens (3) on the front end of the laser diffuser (2); Step 3. Attach the magnet (9) at the end of the bracket (8) to the U-shaped steel bracket or steel mesh on the roof of the tunnel/roadway, adjust the position of the magnet (9) and the length of the telescopic rod (6), so that the collimated laser ( 1) Located on the tunnel/roadway centerline; Step 4. Turn on the power of the collimating laser (1), irradiate the laser beam (10), and project the blasthole location map on the face of the tunnel (12); Step 5. Adjust the universal ball head (4) and the focusing lens (3) so that the positioning reference point on the blasthole positioning map is projected on the tunnel face reference point on the tunnel face (12), and tighten the knob ( 5) Fix the relative position between the universal ball head (4) and the universal ball seat (15); Step 6. Drill blastholes one by one at the blasthole projection points on the face (12) at the blasthole positioning points on the blasthole location map. 3. A method for quickly scatter-point positioning blastholes on the face of a tunnel/roadway according to claim 2, characterized in that the distance between the collimated laser (1) and the face (12) is 10 ~15 meters.