Tunnel radio laser laying out apparatus
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
- Publication Date
- 2007-11-07
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to a laser stakeout device for underground engineering excavation, more particularly to a wireless laser stakeout device for tunnels, in particular to a laser stakeout device for excavation section outline and blasthole positioning stakeout in drilling and blasting tunnel construction. Background technique
[0002] At present, in the drilling and blasting method construction of underground tunnel network, the positioning and staking of the excavation face is generally in the state of manual instrument centerline measurement and steel ruler positioning of the blasthole, which is time-consuming and labor-intensive, and has low work efficiency, which cannot meet the huge engineering tasks. The urgent requirement of time, and the poor positioning and lofting accuracy are likely to cause excessive and under-excavation, affecting the construction quality, progress and cost.
[0003] Using laser projection for st...