发明名称 |
GROUND IMPROVEMENT METHOD BY HIGH PRESSURE INJECTION AGITATION METHOD, AND SPECIAL HEAD USED FOR GROUND IMPROVEMENT METHOD |
摘要 |
<p>PROBLEM TO BE SOLVED: To provide a ground improvement method by a high pressure injection agitation method that shortens a construction period and also reduces construction costs by easily creating a wall type solidification improvement body in the foundation.SOLUTION: A ground improvement method by a high pressure injection agitation method that improves the foundation by creating a solidification improvement body T in the foundation by inserting a pipe rod 2 into the foundation and injecting a hardener from an injection nozzle 34 of a special head fitted to the pipe rod 2 at a high speed under high pressure includes: providing the special head 6 with three injection nozzles 34 apart in a substantially lateral direction; performing cross injection of hardeners by the three injection nozzles 34 so that the hardeners cross one another at destinations of injections in slight different injection directions; rotating and carrying out the cross injection of the hardeners from the three injection nozzles 34 by a predetermined angle to a predetermined range without any vertical movement; then lifting the pipe rod 2 upward by a predetermined length and then rotating and carrying out the cross injection of the hardeners from the three injection nozzles 34 by a predetermined angle to a predetermined range without any vertical movement; and repeating the lifting and cross injection upward so as to create the wall type solidification improvement body T in the foundation.</p> |
申请公布号 |
JP2015187352(A) |
申请公布日期 |
2015.10.29 |
申请号 |
JP20140065049 |
申请日期 |
2014.03.27 |
申请人 |
FUDO TETRA CORP |
发明人 |
TANAKA HATSUICHI;ISOTANI SHUJI;OKADO MASANORI;NAKAJIMA YOSHITAKA;IMAKIRE KENICHI |
分类号 |
E02D3/12 |
主分类号 |
E02D3/12 |
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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