发明名称 |
Explosive-charge-tamping method in borehole |
摘要 |
A tamping column (6) is inserted in the borehole (3) between the mouth of the latter and the explosive charge (5). The column is of gelatine-forming material swelling when water is added to it and is inserted before or after the charge. It can be inserted in the dry state, the hole being then filled with water.
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申请公布号 |
DE4244617(A1) |
申请公布日期 |
1994.07.07 |
申请号 |
DE19924244617 |
申请日期 |
1992.12.31 |
申请人 |
ORTWIN M. ZEISSIG GMBH & CO. KG, 45481 MUELHEIM |
发明人 |
ZEISSIG, ORTWIN M., 45481 MUELHEIM |
分类号 |
F42D1/28;(IPC1-7):F42D1/24 |
主分类号 |
F42D1/28 |
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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