ESTIMATIONS OF THE SHAPE AND VOLUME OF A STONY-DEBRIS-FLOW FAN  

作　　者：Chjeng Lun SHIEH 1, Chyan deng JAN 2 and Yuan fan TSAI 3 

出　　处：《International Journal of Sediment Research》1998年第4期36-47,共12页国际泥沙研究（英文版）

摘　　要：This paper presents the experimental results of the deposition outline shapes of sediment water flows on an inclined plane. The experiments simulate the deposition shapes of stony debris flow fans in a flooding plain and the results show that the deposition profiles of the sediment water mixture in the inclined plane could be approximately described by Gaussian curves both in the longitudinal and the transverse directions of the flow path. The shape of the fringe of deposition is similar to a half ellipse. The length, width and depth of the sediment deposition in a “quasi stable stage have their own maximum values, L c, B m and Z o , respectively, for each case. The total volume V of sediment deposition could be simply related to these maximum values by V=αL cB mZ o with a shape parameter α to be empirically determined. The parameter α was about 0.24 based on the present experimental data for uniform sediments.This paper presents the experimental results of the deposition outline shapes of sediment water flows on an inclined plane. The experiments simulate the deposition shapes of stony debris flow fans in a flooding plain and the results show that the deposition profiles of the sediment water mixture in the inclined plane could be approximately described by Gaussian curves both in the longitudinal and the transverse directions of the flow path. The shape of the fringe of deposition is similar to a half ellipse. The length, width and depth of the sediment deposition in a “quasi stable stage have their own maximum values, L c, B m and Z o , respectively, for each case. The total volume V of sediment deposition could be simply related to these maximum values by V=αL cB mZ o with a shape parameter α to be empirically determined. The parameter α was about 0.24 based on the present experimental data for uniform sediments.

关 键 词：Debris flow Debris  flow fan Deposit experiment Gaussian curve 

分 类 号：TV144[水利工程—水力学及河流动力学]