Tunnel blasting shot hole angle accurate control auxiliary device

Abstract

The invention relates to a tunnel blasting shot hole angle accurate control auxiliary device. The auxiliary device comprises a supporting leg assembly, a horizontal plane angle adjusting assembly, a vertical plane angle adjusting assembly and a sleeve distance measuring assembly which are connected in sequence. The vertical plane angle adjusting assembly comprises a vertical plane angle dial and a vertical plane pointer. The sleeve distance measuring assembly rotates along the vertical plane and drives the vertical plane pointer to rotate relative to the vertical plane angle dial. The horizontal plane angle adjusting assembly comprises a horizontal plane angle dial and a horizontal plane pointer; and the vertical plane angle adjusting assembly rotates along the horizontal plane to drive the horizontal plane pointer to rotate relative to the horizontal plane angle dial. The supporting leg assembly is matched with a horizontal indicating mechanism arranged on the horizontal plane angle dial to accurately adjust the levelness of the device, the horizontal plane angle adjusting assembly is used for accurately controlling the horizontal rotation angle of a sleeve, the vertical plane angle adjusting assembly is used for accurately controlling the vertical rotation angle of the sleeve, a distance measuring mechanism is used for indicating the depth of a blast hole, and the blast hole angle and depth can be accurately calibrated.

Description

technical field [0001] The invention relates to the technical field of blasting construction of tunnels and roadways, in particular to an auxiliary device for precisely controlling the blast hole angle during blasting. Background technique [0002] The drill and blast method is to excavate rocks by drilling, charging, and blasting. It has the characteristics of convenience, flexibility, and strong adaptability to geological conditions. It is still one of the most important tunneling methods at this stage. The accurate measurement and determination of the position, depth and angle of the tunnel blasting hole has positive and practical significance for the subsequent explosive filling and plugging, the prevention of early blasting and blasting failure safety accidents, and the guarantee of blasting effect and tunnel forming quality. At present, tunnel blastholes are generally drilled with air-leg drilling rigs. The accuracy of blasthole parameters is highly dependent on the ex...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that air-leg drilling rigs are commonly used to drill blastholes in tunnels at present, and the accuracy of blasthole parameters is highly dependent on the experience level of operators, poor drilling positioning of blastholes is common, and the depth of blastholes of the same type is not uniform , the angle of the blast hole is usually not accurately measured, and the depth is generally estimated by the inspection of the gun stick. The problem of the large error range of the data

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