| 摘要 |
PURPOSE: A detachable extension steel pipe structure and a grouting method using the same are provided to maintain the durability of an excavator by detachably coupling the rear end of a steel pipe to the excavator. CONSTITUTION: A detachable extension steel pipe structure comprises a main pipe(10) and an extension pipe(20). The main pipe comprises multiple through holes(14). The rear end of the main pipe is opened. The extension pipe is integrally coupled to the opened rear end of the main pipe. The extension pipe comprises multiple extension members(21,23) which has the same length as each other.
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