发明名称 |
Método e aparelho para explosão de pequena carga. |
摘要 |
<p>A method for small-charge blasting, and a rock drilling unit used therein. By means of a rock drilling machine of the rock drilling unit, a drill hole is first drilled into material to be excavated, after which one or more cartridges comprising a propellant charge are fed through a drilling tool onto the bottom of the drill hole. The drilling unit comprises a cartridge feed station, which is separate from the rock drilling machine and from which the cartridges may be fed into a longitudinal channel in the drilling tool.</p> |
申请公布号 |
BRPI0822175(A2) |
申请公布日期 |
2015.06.16 |
申请号 |
BR2008PI22175 |
申请日期 |
2008.12.17 |
申请人 |
SANDVIK MINING AND CONSTRUCTION OY |
发明人 |
AHOLA;ERKKI;RÄISÄNEN;VEIKKO |
分类号 |
E21B7/00;E21C37/12;E21C37/14;F42D1/08;F42D3/04 |
主分类号 |
E21B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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