Full-automatic blast hole setting-out method for tunnel smooth surface blasting

A smooth blasting, fully automatic technology, applied in the field of blasting, can solve the problems affecting the tunnel process cycle, difficult to control tunnel over-under-digging, and workers' random drilling, so as to reduce the amount of over-excavation and reduce the tunnel operation cycle. Time, the effect of controlling the quality of smooth blasting

Active Publication Date: 2014-08-13
THE SECOND CONSTR OF CTCE GROUP
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Problems solved by technology

If the traditional stakeout method is used, there are several disadvantages: first, the stakeout time is long, which affects the tunnel process cycle; second, the stakeout accuracy is low (using the traditional center-setting drawing ruler positioning method, etc.), and it is difficult to control the over- and under-excavation of the tunnel; There are fewer stakeout points, and the workers are more random in drilling

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  • Full-automatic blast hole setting-out method for tunnel smooth surface blasting

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Embodiment Construction

[0017] This embodiment is a fully automatic blasting hole stakeout method for tunnel smooth blasting, which is characterized in that the method includes the following steps:

[0018] Step 1: Selection of equipment and supporting software;

[0019] The selected instruments and equipment mainly include: the selection of a total station capable of full-automatic laser-free prism-free measurement system, supporting cross-section setting out and blasting hole setting out software, reflective sheets, tripods, and single prism groups;

[0020] Step 2: Data entry;

[0021] First, create a new job for this tunnel in the software, and then enter the tunnel section and tunnel line data, namely horizontal curves and vertical curves. When entering section data, you can use the direct import method of CAD drawings. When entering, you must pay attention to the selection of baselines and The relationship between the baseline and the tunnel line is finally selected according to the blast hole...

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Abstract

The invention discloses a full-automatic blast hole setting-out method for tunnel smooth surface blasting. The method mainly comprises three steps, i.e. instrument equipment and matched software selection, data entry and total station full-automatic blast hole setting-out construction site operation. The method disclosed by the invention has the major advantages that the setting-out efficiency is improved, the smooth surface blasting quality is controlled and the effect of overbreak and underbreak control in tunnel construction is remarkable; compared with the traditional blast hole setting-out method, the skilled labor force is saved, the tunnel operation cycle time is reduced, the overbreak and the underbreak are effectively controlled and the overbreak quantity is reduced.

Description

technical field [0001] The invention relates to a blasting method, in particular to a full-automatic method for setting out blastholes during tunnel excavation by smooth blasting. Background technique [0002] At present, most of the tunnel construction still adopts the mining method, and the artificial steel tape measure is used to measure the surrounding eyes of the blasting. In the construction of long and curved tunnels, this method has been increasingly unable to meet the requirements of rapid and refined construction. The entrance of Zhuling Tunnel of Zhangtang-Tang Railway constructed by our company is 1343m long, and the exit of Houzhangzi Tunnel is 1585m long. The strata of both tunnels are Indochina (γ 5 )granite. Granite: off-white with red flesh, medium-coarse grain structure, massive structure, well-developed joints and fissures, the main joint occurrences are 240°∠75° and 95°∠80°, and the spacing is 40-80cm and 30-100cm respectively. Surrounding rocks of gra...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/08
Inventor 高飞李波刘学伟潘红桂唐满轲
Owner THE SECOND CONSTR OF CTCE GROUP
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