均衡纵剖面形态的实验研究-水土保持通报.PDF

20 1 Vol. 20 No. 1 2000 2 Bulletin of Soil and Water Conservation Feb. , 2000 　 严宝文, 包忠谟 ( , 712100) 　　　　: 。 , ,, 。 : 　 　 : 　　: 1000 288 ( 2000) 01 0014 04　　 : 931. 1 A X P An Experimental Study On Form of Equilibrium Profile YAN Bao wen, BAO Zhong mo (College of Water Resources and Architectural Engineering, Northwestern Agricultural University , Yangling District 712100, Shaanx i Province, PRC) Abstract In condition of uniform stratum and unchanged flow the process of equilibrium profile forming is simi: , lar to a mathematic question Toboggan slide with the least time. Starting from theory of minimum energy dissi pation, It is discussed and verified through indoor experiment that a theoretical equilibrium profile should be a ro tation wheel line. This has not only proved that the conclusion coming from theoretical research is right, but given a solid theoretical foundation to further practical use. Keywords: equilibrium profile; fluvial geomorphology; experimental research 　　、 、 ,。 , [1, 2] 、 , , , ,。 1　理论研究简述 , , () [3] 1　 , , = dp /dt= 0 , 　　,, : , E = E + W 。 　　 A , , E , , W , W , W = ∫Af ds