Study on Coal Mine Fast Drilling Equipment and Blasting Key Technology

DOI

10.2991/iceesd-17.2017.5How to use a DOI?

Keywords

Fast excavation, Drilling jumbo, Large-diameter, Parallel cut blasting.

Abstract

At present, in excavation of the coal mine roadway, it is widely used to a full section of millisecond blasting in borehole depth of about 2.0m. A lot of practice shows that, due to the influence of geological conditions, drilling, charge and other factors, footage per cycle reaching 2.5 ~ 3.0m, there will be a large number of unexploded dynamite, or the low utilization rate of blasthole, which affects the driving efficiency. We need to research and develop a type of rapid composite drilling jumbo, which can drill auxiliary holes with diameter around 38mm, and can solve the drilling problem of large-diameter and center deep-hole of diameter not less than 120mm and hole depth of about 3m. It matches the key blasting technology of large-diameter parallel cut blasting method, which can improve the efficiency of drilling, blasting and driving excavation.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Hongli Wang
AU  - Wei Bao
AU  - Taihui Xu
AU  - Lixin Song
PY  - 2017/04
DA  - 2017/04
TI  - Study on Coal Mine Fast Drilling Equipment and Blasting Key Technology
BT  - Proceedings of the 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017)
PB  - Atlantis Press
SP  - 26
EP  - 30
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceesd-17.2017.5
DO  - 10.2991/iceesd-17.2017.5
ID  - Wang2017/04
ER  -