发明名称 |
Method and device for boring holes |
摘要 |
A process and device for boring holes in soil or rocks, in particular for percussion or rotary percussion boring. A bore hole is formed by an annular drill bit mounted on boring rods and at the same time a jacket tube which surrounds the boring rods with a certain gap is introduced. The annular drill bit is flushed during boring by a flushing medium fed into the annular gap defined between the boring rods and the jacket tube. When boring is completed, a setting suspension is fed into the annular gap to form an anchorage with the boring rods. An anchorage can thus be obtained in a simple and reliable manner immediately after a bore hole is completed, in particular in loose or slack material, by a device having a simple design.
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申请公布号 |
US6145601(A) |
申请公布日期 |
2000.11.14 |
申请号 |
US19990466072 |
申请日期 |
1999.12.17 |
申请人 |
TECHMO ENTWICKLUNGS-UND VERTRIEBS GMBH;"ALWAG"TUNNELAUSBAU GESELLSCHAFT M.B.H. |
发明人 |
MOCIVNIK, JOSEF;BOHM, KARL |
分类号 |
E21D20/00;E02D5/76;E02D5/80;E21D21/00;(IPC1-7):E01B7/20 |
主分类号 |
E21D20/00 |
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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