The Hydraulic Test Research Of Flow State Amendment In Dongshen Water Supply Project

In the arrangement of the water diversion project, because of the topograp hic condition limit, the rush flow crook is difficult to avoid sometimes. Water flow will make the curvilinear movement when enter the crook, the flow state becomes extremely complicated under the gravity and centrifugal force, thus th e rush flow crook improvement is the problem in actual project which needs t o solve. This article linked up the flow state improvementquestion from the Jin hu aqueduct exportation to the Zhuweitian double buried-pipeline through the h ydraulic model test. Through analyzing the curving steep water fluidstate, the e xperimental comparison elaborated each kind of improvement fluidstate measure, and has analyzed the feasibility of the optimization project. Main research as follows:1 Based on the original hydraulic construction arrangement from Jinhu aqueduct exportation to Zhuweitian double buried-pipeline entrance, the hydraulic physical model is designed. Regards the hydraulic model as the research platform, the exportation of the Jinhu-Aqueduct ,the strobe and the entrance of double buried-pipeline , and the slope section water line (test the tube head line) are tested in different conditions.2 Analysis the crook steep rapid stream characters and dangers from the aqueduct exportation to Zhuweitian double buried-pipeline entrance. The testing results revealed that in Dongshen water supply system,the joint part which connect Jinhu Aqueduct exit with Zhuweitian double buried pipeline entrance occurred hydraulic structure partial damage in circulation process because of the bad water flow state. The reason for bad water flow state is the jont part -crook rapid steep aqueduct connection.3 To make a proposal to deal with the connection problem with crook st eep water flow state , the improvement of the water construction arrangement f rom aqueduct to double pipeline is studied and the disposal plan is worked out. Improving the constructed crook steep aqueduct rapidstream onto the slowstrea m as the principle.To apply the hydraulic physical model, the first step is test the improved singl-factorial function, and then integrated their respective advant...