A system for tunnel blasting drilling using a laser guide frame

Abstract

The present invention discloses a system for tunnel blasting drilling using a laser guide frame, comprising a hole bottom, a tunnel face, a first reference line, and a second reference line. An inner circle hole and a slot hole are defined between the hole bottom and the tunnel face. The inner circle hole is perpendicular to the tunnel face, and the slot hole is obliquely intersecting the tunnel face. The tunnel face, the first reference line, and the second reference line are parallel to each other, and the tunnel face intersects the first reference line. A laser guide frame is provided between the first and second reference lines, and multiple laser tubes are provided within the laser guide frame, with the front ends of the laser tubes facing directly between the inner circle hole and the slot hole. The present invention defines multiple auxiliary holes between the inner circle hole and the slot hole, with the laser tubes on the laser guide frame corresponding to the auxiliary holes. The first and second reference lines, as well as the laser guide frame, are used to accurately control the drilling direction and depth, thereby improving the drilling accuracy of the slot.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel blasting drilling, and in particular to a system for tunnel blasting drilling using a laser guide frame. Background Art

[0002] At present, most tunnel blasting adopts wedge-shaped trenching. Multiple rows of blastholes are set from the trench hole to the inner circle hole. The slope and depth of the blastholes change successively. The drilling accuracy of this part is extremely difficult to control.

[0003] Most slot holes are constructed using the empirical method, where drillers drill holes based on their eyesight. This often results in inaccurate drilling angles and uneven resistance lines at the bottom of the hole, leading to uneven face alignments. It is also common for blast holes to be of varying depths, with the bottom of the hole not being on the same section. This means that cyclical advance cannot be guaranteed and explosives are wasted. Summary of the Invention

[0004] In view of the above-mentioned shortcomings, the object of the present invention is to provide a system for tunnel blasting drilling using a laser guide frame, thereby improving the drilling accuracy of the groove part and making the drilling angle and depth controllable.

[0005] To achieve the above purpose, the technical solution provided by the present invention is:

[0006] A system for tunnel blasting drilling using a laser guide frame includes a hole bottom, a tunnel face, a first reference line, and a second reference line. An inner circle hole and a slot hole are provided between the hole bottom and the tunnel face. The inner circle hole is perpendicular to the tunnel face, and the slot hole is obliquely intersected with the tunnel face. The tunnel face, the first reference line, and the second reference line are parallel to each other. The tunnel face intersects the first reference line. A laser guide frame is provided between the first reference line and the second reference line. A plurality of laser tubes are provided within the laser guide frame, and the front ends of the laser tubes are directly facing between the inner circle hole and the slot hole.

[0007] Preferably, a plurality of auxiliary holes are provided between the inner ring hole and the cutout hole, and the laser tube and the auxiliary holes are located on the same horizontal line.

[0008] Preferably, the hole bottom distances between the auxiliary holes are uniform.

[0009] Preferably, the laser tubes are evenly spaced at the front and rear ends of the laser guide frame.

[0010] Preferably, the tunnel face and the first reference line are located between the hole bottom and the second reference line.

[0011] Preferably, the vertical distance between the first reference line and the second reference line is equal to the vertical distance between the first reference line and the bottom of the hole.

[0012] The beneficial effects of the present invention are as follows: the present invention opens multiple auxiliary holes between the inner ring hole and the groove hole, the laser tube on the laser guide frame corresponds to the auxiliary holes one by one, and the drilling direction and depth are accurately controlled by setting the first reference line, the second reference line and the laser guide frame, thereby improving the drilling accuracy of the groove part.

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the working principle of the tunnel blasting drilling system using a laser guide frame according to the present invention;

[0016] Figure 2 This is a schematic diagram of measurement and positioning using a total station.

[0017] The descriptions of the reference numerals in the figures are as follows.

[0018] Bottom of hole—1, tunnel face—2, first reference line—3, second reference line—4, inner circle hole—5, slot hole—6, laser guide frame—7, laser tube—8, auxiliary hole—9, tunnel centerline—10. DETAILED DESCRIPTION

[0019] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the embodiments and the accompanying drawings.

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] See also Figure 1 and Figure 2A system for tunnel blasting drilling using a laser guide frame includes a hole bottom 1, a tunnel face 2, a first reference line 3, and a second reference line 4. An inner circle hole 5 and a groove hole 6 are opened between the hole bottom 1 and the tunnel face 2. The inner circle hole 5 is perpendicular to the tunnel face 2, and the groove hole 6 is obliquely intersected with the tunnel face 2. The tunnel face 2, the first reference line 3, and the second reference line 4 are parallel to each other, and the tunnel face 2 intersects with the first reference line 3. A laser guide frame 7 is provided between the first reference line 3 and the second reference line 4. A plurality of laser tubes 8 are provided in the laser guide frame 7, and the front ends of the laser tubes 8 are directly facing between the inner circle hole 5 and the groove hole 6.

[0022] In this embodiment, a plurality of auxiliary holes 9 are provided between the inner circle hole 5 and the cutout hole 6 , and the laser tube 8 and the auxiliary holes 9 are located on the same horizontal line.

[0023] In this embodiment, the auxiliary holes 9 are spaced evenly apart from each other in terms of hole bottom distances.

[0024] Furthermore, the laser tubes 8 are evenly spaced at the front and rear ends of the laser guide frame 7 .

[0025] Furthermore, the tunnel face 2 and the first reference line 3 are located between the hole bottom 1 and the second reference line 4 .

[0026] Furthermore, the vertical distance between the first reference line 3 and the second reference line 4 is equal to the vertical distance between the first reference line 3 and the hole bottom 1 .

[0027] Working principle:

[0028] The location of the inner circle hole 5 forms the DB line between the hole bottom 1 and the tunnel face 2. The location of the slot hole 6 forms the CA line between the hole bottom 1 and the tunnel face 2. Points C and D are both located on the hole bottom 1. The extension line between the DB line and the CA line intersects at point J, which is located between the first reference line 3 and the second reference line 4. Then, a line segment is drawn with point J as the fixed point to evenly cut DC. The distance from the hole bottom is a.

[0029] A rectangle is set between point J and the tunnel face. The cutting line segment with point J as the fixed point intersects with the rectangle. The front end of the rectangle is cut into several segments with a length of m, and the rear end is cut into the same number of segments with a length of n, using the vertical segment of the inner circle hole 5 as the reference. This completes the preparation of the laser guide frame 7.

[0030] The line segments in the rectangle are replaced by laser tubes 8, and the direction of the laser tubes 8 is the drilling direction.

[0031] The present invention accurately controls the drilling direction and depth according to the reference line, the laser guide frame and the laser tube.

[0032] The positions of the tunnel centerline 10, the cut hole 6, the peripheral hole contour line, the cycle footage reference line and the laser guide frame 7 of the present invention are all determined by measuring with a total station.

[0033] Based on the disclosure and teachings of the above description, those skilled in the art may also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this description, these terms are only for convenience of description and do not constitute any limitation to the present invention. Other devices that are the same or similar to the above devices are also within the scope of protection of the present invention.

Claims

1. A system for tunnel blasting drilling using a laser guide frame, characterized in that: The invention comprises a hole bottom (1), a tunnel face (2), a first reference line (3) and a second reference line (4); an inner circle hole (5) and a groove hole (6) are provided between the hole bottom (1) and the tunnel face (2); the inner circle hole (5) is perpendicular to the tunnel face (2); the groove hole (6) is obliquely intersected with the tunnel face (2); the tunnel face (2), the first reference line (3) and the second reference line (4) are parallel to each other; the tunnel face (2) intersects with the first reference line (3); a laser guide frame (7) is provided between the first reference line (3) and the second reference line (4); a plurality of laser tubes (8) are provided in the laser guide frame (7); the laser tubes (8) are evenly arranged at intervals at the front end and the rear end of the laser guide frame (7); the front end of the laser tube (8) is directly facing between the inner circle hole (5) and the groove hole (6); A plurality of auxiliary holes (9) are provided between the inner ring hole (5) and the groove hole (6); the laser tube (8) and the auxiliary holes (9) are located on the same horizontal line; and the hole bottom distances between the auxiliary holes (9) are uniform; The tunnel face (2) and the first reference line (3) are located between the hole bottom (1) and the second reference line (4); The vertical distance between the first reference line (3) and the second reference line (4) is equal to the vertical distance between the first reference line (3) and the hole bottom (1); The positions of the tunnel centerline (10), the cutout hole (6), the peripheral hole contour line, the cycle footage reference line and the laser guide frame (7) are all determined by measuring with a total station.

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