Study on Coal Mine Fast Drilling Equipment and Blasting Key Technology
Hongli Wang, Wei Bao, Taihui Xu, Lixin Song
Available Online April 2017.
- https://doi.org/10.2991/iceesd-17.2017.5How to use a DOI?
- Fast excavation, Drilling jumbo, Large-diameter, Parallel cut blasting.
- 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.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
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 - 2017 6th International Conference on Energy, Environment and Sustainable Development (ICEESD 2017) PB - Atlantis Press SN - 2352-5401 UR - https://doi.org/10.2991/iceesd-17.2017.5 DO - https://doi.org/10.2991/iceesd-17.2017.5 ID - Wang2017/04 ER -