发明名称 |
SETT OCH ANORDNING FOR BRYTNING AV ETT FAST MATERIAL, SASOM BERG |
摘要 |
A hard compact material such as rock is broken by directing a high velocity jet of relatively incompressible fluid, such as water, into a hole which is drilled in the material to be broken. The jet is generated by a nozzle in alignment with the hole and is suddenly arrested in the hole in appropriate position with respect to adjacent free surfaces of the material. A jet stagnation pressure is created in the hole of sufficient magnitude and duration or jet repetion rate to break the material towards the free surfaces. Preferably, a secondary nozzle emits fluid for filling partially or wholly the hole prior to generating the high velocity jet by a primary nozzle. |
申请公布号 |
SE395928(B) |
申请公布日期 |
1977.08.29 |
申请号 |
SE19750010556 |
申请日期 |
1975.09.19 |
申请人 |
* INSTITUT CERAC SA |
发明人 |
C * YOUNG;J-P H * DENISART;B E * EDNEY |
分类号 |
E21C25/60;B26F3/00;B26F3/04;E21C37/06;E21C37/12;(IPC1-7):21C37/06 |
主分类号 |
E21C25/60 |
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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