| 摘要 |
PURPOSE: A stirring device for underground extension is provided to economize energy and to shorten the working hours on stirring. CONSTITUTION: The stirring device for underground extension comprises: a stirring axle(1) provided with a hardener injection hole, a rod coupler(16), an excavation bit(2) and a hardener discharge hole(7); and upper stirring wings(3a,3b,3c) and lower stirring wings(3a',3b',3c') attached to the upper and lower sides of the stirring axle(1), wherein the upper stirring wing(3a) contains a fixed stirring wing(4a) and a divergent stirring wing(5a).
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