Hydraulic Resistance Induced by Deposition of Sediment in Porous Medium

• Published in: Journal of hydraulic engineering (New York, N.Y.) Vol. 126; no. 7; pp. 547 - 551
• Main Authors: Wu, Fu-Chun, Huang, Hung-Tzu
• Format: Journal Article
• Language: English
• Published: Reston, VA American Society of Civil Engineers 01.07.2000
• Subjects: Applied sciences; Buildings. Public works; Deposition; Exact sciences and technology; Flow of fluids; Gravel; Hydraulic conductivity; Hydraulic constructions; Mathematical models; Porous materials; Sediments; Seepage; TECHNICAL NOTES; Particle size distribution; Water leak; Porous medium; Hydraulic conductivity; Stream; Experimental device; Probability distribution; Particle transport; Gravel; Experimental study; Sedimentation; Hydraulic resistance
• ISSN: 0733-9429; 1943-7900
• DOI: 10.1061/(ASCE)0733-9429(2000)126:7(547)

The deposition of the instantaneously released sediment into a gravel matrix and the hydraulic resistance induced by the rapid siltation are investigated herein. The experimental results reveal that the depositional patterns of the sediment are governed by the gravel-sediment size ratio, the amount of sediment released, and the seepage flowrate. The observations also indicate that the stable stage of sediment deposition is reached shortly after the occurrence of sudden slump. A regression relation is developed to quantify the stable-stage hydraulic resistance with the major governing factors. Given the hydraulic resistance, one can use the siltation equation to evaluate the hydraulic conductivity of the silted porous medium. With such information, planning of the engineering alternatives to meet the seepage flow requirements is made possible.