2019 Fiscal Year Final Research Report

Development of unmanned construction technology that can dramatically improve the dismantling of structures by use of an edge excavation method

Research Project

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Project/Area Number	17K06525
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Civil engineering materials/Construction/Construction management
Research Institution	Kure National College of Technology
Principal Investigator	Takahisa Shigematsu 呉工業高等専門学校, 環境都市工学分野, 教授 (10321481)
Co-Investigator(Kenkyū-buntansha)	大西義浩愛媛大学, 教育学部, 准教授 (00321480) 河村進一呉工業高等専門学校, 環境都市工学分野, 教授 (70315224)
Project Period (FY)	2017-04-01 – 2020-03-31
Keywords	剥離掘削 / 端面掘削方式 / 多段型掘削機 / センターカッタービット
Outline of Final Research Achievements	The purpose of this study was to develop a rock excavator attached to backhoe by using multistage edge excavation method. We carried out the experiments by using model excavator to find out its efficiency and force acting on the rock excavator. In this study, we conducted a basic experiment by using a displacement controlling method to determine the load required to control a model excavator. The specimen used was high-strength mortar specimen. In the experiment, a model excavator was attached to the experimental device, and the speed was set to be constant by displacement control. Excavation was performed by rotating the specimen. The vertical force Fz, torque T, excavation depth z and, soil volume m, the excavation time t was measured. As a result, the load required for the model excavator was verified and the capability of the experiment to be performed through load controlling was confirmed.
Free Research Field	土木施工
Academic Significance and Societal Importance of the Research Achievements	本研究の目的は,端面掘削方式による掘削効率を飛躍的に向上できる低騒音・低振動の新しい硬質岩盤剥離掘削技術を開発することである。端面掘削方式は,エネルギー効率が良好なため,従来の機械掘削工法に勝る削孔工法となる可能性が高く,本技術を利用してバックホウなどのアタッチメントを製作することにより,今後増加すると予想される原子力発電所の解体などの無人化施工への適応が期待できる。また、今回開発した油圧制御法は、様々な建設機械に利用でき、効率のよい油圧制御が可能であることが示された。