发明名称 |
HORIZONTAL POSITION DETECTING METHOD OF SHIELD MACHINES |
摘要 |
PURPOSE:To make detecting of positions on the ground easy and highly accurate and achieve the increase in the speed of the work and the improvement in accuracy by providing a magnetic field generator which shows a characteristic of permitting discrimination of the earth surface point right above a shielding machine which excavates ground from other points. |
申请公布号 |
JPS53135671(A) |
申请公布日期 |
1978.11.27 |
申请号 |
JP19770050395 |
申请日期 |
1977.05.01 |
申请人 |
NIPPON TELEGRAPH & TELEPHONE |
发明人 |
KOBAYASHI HIDEO;HORIUCHI TOSHIYUKI |
分类号 |
E21D9/06;G01B7/00;G01S1/00;G01V3/06;G01V3/08;G01V3/10;G01V3/11 |
主分类号 |
E21D9/06 |
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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