Study Of Pressure Control Methods Through Impounding Water For The Gates Of The Xiaolangdi Reservoir

With the demands of development of national economy and the science , the scales of hydraulic and hydroelectric power project become larger and larger. It is great challenges to us for either the optimization designs or safe operation of the pressure balance for gates through water impounding .Water impounding for gates pressure balance is the prerequisite before operation of the most of gates, its safe operation will directly influence the smoothly opening of the gates as well as the exertion of the project functions, especially the safe flood prevention of the project. Furthermore, It is an urgent problem for us how to make innovation on the basis of the previous experiences. The article analyses and studies the water impounding for pressure balance of the hydraulic gates combining with the practices in Xiaolangdi Dam Project on the basis of the previous experiences and gives decisive assistant to the safe operation of Xiaolangdi Dam ProjectThe essay gives brief introduction to the characteristics of the Xioalangdi Dam Project and setting of its hydraulic gates, and to the choice of the manner of water impounding for pressure balance of the hydraulic gates combining with the characteristics of the every manner of water impounding. It highlights the shaking characteristics and its reasons of the water impounding pipes for pressure balance of the hydraulic gates in the Xioalangdi Dam Project combing the analysis result of the prototype experiment and raises the corresponding treatment measure.This essay makes analysis to the water impounding pipes for pressure balance as well as demonstration to the security of the manner of water impounding for pressure balance through raiseing gates with small open and breaking through the limitation only utilization for the middle or lower water head. Through the model experiment analysis, it demonstrates the security of the manner of water impounding for pressure balance through raiseing gates with small open under high water head and suggests the manner as the backup manner for water impounding for pressure balance of the hydraulic gates in Xiaolangdi Dam Project. It both solves the security problems of the present water impounding pipes for pressure balance and provides the assuring measure for the security of water impounding for pressure balance of the hydraulic gates in Xiaolangdi Dam Project.