宝钢码头前沿沙体移动的DEM模拟

利用地理信息系统（GIS）与数字高程模型（DEM）技术定量模拟了1994年~2002年宝钢码头前的沙体冲淤演变过程，结果表明：1994年~1999年，宝钢码头前河床总体表现为冲刷，冲刷量为53.286×106m3，年平均冲刷率为10.657×106m3，1999年~2002年，仍为冲刷，冲刷量为60.277×106m3，年平均冲刷率为20.092×106m3.1994年~2002年8 a共冲刷113.563×106m3；年平均冲刷率为14.195×106m3.淤积区域主要分布在上段沙体的上部及上段沙与新浏河沙体之间的区域.宝钢码头河床的演变是河床的边界条件、来水来沙及人类活动的耦合结果.上段沙体的下移南偏对宝钢码头存在潜在的不利.

DEM Simulation of Sediment Movement in the Baogang Dock Frontal Channel(Chinese)

the sediment variation in the Baogang dock frontal channel from 1994 to 2002 was simulated using DEM (Digital Elevation Model) and GIS (Geography Information System). The results were as fol-lowing: the Baogang dock channel was general character of erosional from 1994 to 2002, and the total erosion quantity is 113.563×106m3; the average rate of erosion was 14.195×106m3/a;From 1994 to 1999, the channel was erosional, and the total erosion quantity was 53.286×106m3; 1999 to 2002,Baogang dock channel was also erosional, and the total erosion quantity was 60.277×106m3. Sediment was distributing in the upside area about Shangduan Sand and the area between the Shangduan Sand and the New Liuhe Sand. The channel change was a result of the channel borderline conditions, water discharge, suspended sediment load and human activities. The continual movement of the Shanduan Sand to southeast exert potential pre-ssure on the development of Baogang dock.