Ground pressure balance type ground specimen sampling method |
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| 申请号 | JP5589284 | 申请日 | 1984-03-23 | 公开(公告)号 | JPS60200144A | 公开(公告)日 | 1985-10-09 |
| 申请人 | Kiso Jiban Consultant Kk; | 发明人 | SAKAI KAZUO; | ||||
| 摘要 | PURPOSE:To make it possible to collect a specimen while the natural state of the ground is held, by reducing the friction resistance between the specimen and a sampler inner wall by the fluid injected in the specimen and solidifying the specimen to eliminate the disturbance of stress release of the specimen. CONSTITUTION:The vertical and horizontal ground pressures of the ground are calculated and a spacer 11 for generating side pressure corresponding to horizontal ground pressure is set to an inner pipe 15 after the length thereof was determined. A fluid 20 is injected from an injection pipe 36 to compress a spring 16 through a ring shaped piston and pressure corresponding to vertical ground pressure is held in a sampler. When a shoe 31 is inserted into the ground under pressure, pressure corresponding to vertical ground pressure is acted on the upper surface of the specimen cut off in the inner pipe 15 and peripheral pressure corresponding to horizontal ground pressure is acted thereon by the fluid 20. After the fluid 20 around the specimen is solidified, the sampler is drawn up above the ground to take out the specimen. Therefore, the specimen without distrubance can be collected and stored in such a state that stress in the natural ground is held. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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