发明名称 |
METHOD FOR EXECUTING EXPANSION-TYPE STEEL PIPE ROCK BOLT |
摘要 |
PROBLEM TO BE SOLVED: To improve the durability of an expansion-type steel pipe rock bolt used for tunnel construction and to improve the shear proof stress of the expansion-type steel pipe rock bolt to a shearing force which occurs due to the deformation of the ground. SOLUTION: In this method for executing the expansion-type steel pipe rock bolt 4 of which both end parts are blocked and which comprises both a fluid injection opening A at one end part and a tubular shape capable of expanding in a drilled hole 2 in a rock mass R, etc., by pressurization from the fluid injection opening A, grout C is pressurized and injected from the fluid injection opening A to expand the steel pipe rock bolt 4 in the drilled hole 2, and the grout C is hardened with the steel pipe rock bolt 4 expanded in the drilled hole 2.
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申请公布号 |
JP2002174099(A) |
申请公布日期 |
2002.06.21 |
申请号 |
JP20000373504 |
申请日期 |
2000.12.07 |
申请人 |
KUMAGAI GUMI CO LTD;SANWA KOKAN KK;HOKUETSU METAL CO LTD |
发明人 |
MITARAI YOSHIO;SAKA HIDEMASA;INOUE TOSHIO;TSUKADA MASAHIRO |
分类号 |
E21D20/00;(IPC1-7):E21D20/00 |
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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