在半壓密細泥環境下，以實驗探討虹吸對泥栓形成現象之研究

Plug formation in hydrosuction experiments with semi-consolidated fine sediment

陳裕文(Yu-Wen Chen)

指導教授 ： 卡艾瑋

國立臺灣大學/工學院/土木工程學研究所/碩士(2015年)

https://doi.org/10.6342/NTU.2015.00799

摘要

無資料

關鍵字

抽泥 ； 虹吸 ； 粒子影像追蹤 ； 水下地形 ； 泥砂濃度 ； 半壓密

並列摘要

For solving the problem caused by the fine sediment in the reservoir, hydrosuction is widely used to remove sediment deposits. In prior research, the delivered sediment concentration attained during hydrosuction was found to vary greatly with consolidation duration. In order to resolve this influence in greater detail, we conducted a new series experiments focused on contrasting the hydrosuction responses of semi-consolidated and consolidated sediment, using a small-scale suction pipe and on-line densimeter. For reconstructing topography, we use the software Aigsoft Photoscan to scan the underwater topography. For consolidated sediment, a steep crater rapidly forms, causing water to break through and hydrosuction efficiency to drop. For semi-consolidated sediment, a plug forms along the surface, helping to delay water entry and making hydrosuction more efficient. The results of semi-consolidated and consolidated experiments are contrasted and compared with the results of prior experiments.

並列關鍵字

hydrosuction ； Photoscan ； particle tracking ； semi-consolidated sediment ； syphon

參考文獻

Fan, J., and Morris, G. (1992) Reservoir sedimentation II: reservoir desiltation and long-term storage capacity. ASCE J. Hydr. Engrg. 118(3), 370-384

Kreizer , M. and Liberzon, A. (2011) Three-dimensional particle tracking method using FPGA-based real-time image processing and four-view image splitter. Experiments in Fluid 50, 613-620

Tsorng, S.J., Capart, H., Lai, J.S., and Young, D.L. (2006) Three-dimensional tracking of the long time trajectories of suspended particles in a lid-driven cavity flow. Experiment in Fluid 40, 314-328

Hotchkiss, R.H., and Huang, X. (1995) Hydrosuction sediment-removal systems (HSRS):principles and field test. ASCE J. Hydr. Engrg 121(6), 479-489

Verhoeven G. (2011) Software Review Taking Computer Vision Aloft – Archaeological Three-dimensional Reconstructions from Aerial Photographs with PhotoScan. Archaeol. Prospect. 18, 67-73