| 摘要 |
PURPOSE: A multi-shaft excavator for constructing a cutoff wall is provided to heighten the water-stopping effect by delaying the penetration of water toward a cutoff wall. CONSTITUTION: The multi-shaft excavator(100) for constructing a cutoff wall comprises: triple-shaft excavation rods(102a,102b,102c) provided with a screw wing(103) to move forward and backward and an impeller blade(104) to mix stir and slurry; excavation heads(105a,105b,105c) provided with a discharge hole connected to an injection hole formed longitudinally along the center of the excavation rods(102a,102b,102c) and installed on the front of the excavation rods(102a,102b,102c) to excavate the ground; a driving unit(106) suspended on a lead master(108) of a crane(107) to rotate the excavation rods(102a,102b,102c); and a slurry distributing unit(111) installed among the driving unit(106) and the excavation rods(102a,102b,102c) to receive the slurry mixed with water and solidifier, then to inject through injection holes formed on the excavation rods(102a,102b,102c).
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