AE等を用いた土質判別装置の実験的研究 : シールド工事への適用性について
スポンサーリンク
概要
- 論文の詳細を見る
The purpose of this study is to develop new methods for soil type classification, mainly grain size distribution, using AE (Acoustic Emission) sensor and accelerometor under the invisible condition. These methods utilize the sound and the vibration phenomena which is generated while penetrating a cone into a soil or while shaving a bit on a ground surface. The penetration cone is provided with an AE sensor and an accelerometor for measuring sound and vibration of cone and with a load cell for measuring penetration resistance. Laboratory experiments have been performed on several kinds of soil which have different grain size distributions. The results of the laboratory experiments indicate that both the mean value of the AE signal and the acceleration increase with the increase in the penetration resistance and in the 30% grain diameter D_30. The sliding contact type soil classification device, which is equipped with AE sensor, is also experimented. The results of the primary experiments show that the different AE power spectrum appear with variation of soil grain sizes and the AE power spectrum is not depended upon a sliding speed or a load. The penetration cone method is applied to a subway tunnelling works by a earth pressure balance type shield machine to investigate its usefulness for soil classification in the invisible chamber. The results of the field tests are agree with the data of laboratory experiment.
- 一般社団法人日本応用地質学会の論文
- 1993-10-10
著者
関連論文
- 降下軽石の土質工学的性質についての調査(破砕性地盤の工学的性質)
- AEを利用した切羽土質性状判別装置の開発
- AEを利用した切羽土質性状別装置の開発
- AE等を用いた土質判別装置の実験的研究 : シールド工事への適用性について
- 40304 自然植生リサイクル材料(ヨシズ)の遮温・保温効果に関する実験的研究(クールルーフ,環境工学I)
- 屋上敷設自然植生リサイクル材(ヨシズ)の日射反射率の推定と熱コンダクタンスの測定