Positioning device and method for tunnel oblique hole cutting and blasting hole

A technology for positioning devices and blastholes, applied in tunnels, earthwork drilling, mining equipment, etc., can solve problems such as low cutting effect, prolonging tunnel construction progress, and vertical direction errors

CN110411297BActive Publication Date: 2022-03-11CHINA RAILWAY TUNNEL GROUP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-03-11

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Abstract

The invention discloses a positioning device for cutting a blast hole with a slanted hole in a tunnel, which comprises a blast hole positioning mechanism fitted on the tunnel face, the blast hole positioning mechanism is connected with a blast hole located outside the tunnel face through a connecting mechanism Angle adjustment mechanism; the blasthole positioning mechanism is provided with a blasthole positioning ring, and the center of the blasthole positioning ring coincides with the blasthole identification point; the blasthole angle adjustment mechanism is provided with an angle adjustment ring, and the circle center of the angle adjustment ring coincides with the blasthole positioning The center of circle of the ring is located on the same horizontal plane; the angle adjustment ring is used to move relative to the blasthole positioning ring on the same horizontal plane to adjust the inclination angle of the drill pipe passing through the blasthole positioning ring and the angle adjustment ring; through the device of the present invention and The method can ensure that the inclination angle of the cutting hole meets the design requirements, so that the bottom of multiple cutting holes can be on a vertical plane to obtain a predetermined cutting effect. At the same time, the device can be used repeatedly and is suitable for various cutting The case of slot eye angles.
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Description

Technical field

[0001] The invention belongs to the technical field of tunnel blast hole cutting, and in particular relates to a positioning device and method for tunnel blast hole cutting and blast hole.

Background technique

[0002] In the process of tunnel construction, the cutting hole is used to blast out a new free surface and provide a free surface for the entire tunnel blasting. The quality of the cutting effect plays a decisive role in the cycle progress. Slant eye cutting is a commonly used cutting method for tunnel blasting excavation, which requires a small number of blast holes and is easy to throw out broken rocks.

[0003] The method of squint cutting is generally manual hand-held pneumatic drill for squint cutting. However, in the process of manual squint cutting, it is difficult to control the angle of the squint cutting blast hole. There are two main control methods at present, one is to use the experience of the construction personnel to visually dril...

Examples

Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] The invention discloses a positioning device for tunnel obliquely cutting a blast hole, which comprises a blast hole positioning mechanism fitted on the tunnel face 12, and the blast hole positioning mechanism is connected with a gun located outside the tunnel face through a connecting mechanism. Hole angle adjustment mechanism.

[0032] The blasthole positioning mechanism is provided with a blasthole positioning ring 3, and the center of the blasthole positioning ring 3 coincides with the blasthole marking point 1. The blasthole angle adjustment mechanism is provided with an angle adjustment ring 9 that can move left and right relative to the blasthole positioning ring 3, and the circle center of the angle adjustment ring 9 and the circle center of the blasthole positioning ring 3 are located on the same horizontal plane

[0033] The...