端面掘削方式による岩盤溝切削機の作業能力と比エネルギー
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概要
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The purpose of this paper is to increase the workability of a trench excavator for a hard rock mass due to the increment of a cutting capacity and the decrement of a specific cutting energy by means of the edge excavation system using a ripping disc cutter bit. The trench excavator of 490 kN weight mounted a cutting drum of 140 cm diameter having 24 conical bits and 6 ripping disc cutter bits. The productivity of the excavator was investigated for a hard rock mass of 278 MPa unconfined compression strength. As the results, it was observed that the cutting capacity and the specific cutting energy of the trench excavator increased to be 2.21 times and decreased to be less than 1/1.33 times that of the conventional cutting drum respectively.
- 愛媛大学の論文