A Method for Estimating the Location of the Drill-Bit During Horizontal Directional Drilling Using a Giant-Magnetostrictive Vibrator
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概要
- 論文の詳細を見る
Horizontal directional drilling (HDD) is a commonly used method for laying pipelines that avoids the need to make an open cut. However, the location of the drill-bit underground must be known at all times when using this method. As conventional electromagnetic wave-based methods are known to have several problems, for example buildings in the line of construction, the moisture content of the ground and the presence of steel towers near the construction site. Herein we suggest a new method based on the propagation of elastic waves in the ground. Thus, measurement of the elastic waves generated by a giant-magnetostrictive vibrator by sensors set on the ground allows us to obtain the differences in arrival time of this wave at each sensor by applying a cross-correlation analysis to the waveforms detected. Finally, an approximate three-dimensional (3D) location method based on these differences was designed.
- 2011-07-25
著者
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Mizutani Koichi
Graduate School Of Systems And Information Engineering Univ. Of Tsukuba
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Kawamura Youhei
Graduate School of Systems and Information Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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Sasaki Naoto
Tada Construction Co., Ltd., Koto, Tokyo 136-0072, Japan
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Kawamura Youhei
Graduate School of System and Information Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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Okawa Hirokazu
Faculty of Engineering and Resource Science, Akita University, Akita 010-8502, Japan
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Tamura Junpei
Graduate School of Systems and Information Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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Mochiji Hidemi
Tada Construction Co., Ltd., Koto, Tokyo 136-0072, Japan
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Mizutani Koichi
Graduate School of System and Information Engineering, University of Tsukuba, Tsukuba, Ibaraki 305-8573, Japan
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Okawa Hirokazu
Faculty of Eng. And Resource Sci. Akita University
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