泄水建筑物的事故平面闸门担负着紧急情况下动水下闸、防止事故扩大的重任,

泄水建筑物的事故平面闸门担负着紧急情况下动水下闸、防止事故扩大的重任,闸门动水关闭的可靠性直接影响工程的泄水安全。在事故平面闸门的动水关闭过程中,闸门水动力荷载受闸门体型、作用水头及流速、启闭速度及通气等诸多因素的影响而难以准确把握,设计荷载产生偏差时容易导致闸门启闭机容量不足或闸门不能正常关闭等问题。当闸门体型设计不良时闸底产生水流分离导致的压力波动,可能会带来闸门振动的不利影响。随着高水头平面闸门日益增多,闸门的水动力特性更加复杂,其运行可靠性问题更加突出。因此研究高水头闸门复杂的水动力特性,分析闸门体型及水力参数对闸门水动力荷载的影响,是高水头平面闸门工程设计和应用急需解决的问题。

結果 (英文) 1:

Discharge structures underwater plane gate bears an emergency brake and the task of preventing accidents, gate hydrodynamic closing sluice safety directly affects the reliability of project. During the course of plane gate hydrodynamic closing, gate gate shape, hydrodynamic load acting head and flow rate, opening and closing speed and ventilation, and many other factors and it is difficult to accurately grasp the design load deviation is easily lead to the gate hoist capacity deficiencies or problems such as valve does not shut down correctly. When the poor design of gate size, flow separation caused by pressure fluctuations in the bottom, may bring adverse effects of gate vibration. With the increasing high pressure plane gate, gate hydrodynamic characteristics more complex, its reliability issues have become more prominent. Therefore study the hydrodynamic characteristics of high head gate complex, analysis of gate size and hydraulic parameters affect the hydrodynamic loading gate, engineering design and application of high water-head flat gate is needed to solve the problem.

結果 (英文) 2:

Sluice gate accident planar structures responsible for emergency gate shutting down, prevent the accident responsibility, safe water sluice gate are closed directly affects the reliability of the project. In the accident plane gate hydrodynamic closing process, the shutter gate hydrodynamic loads the affected body, the role of head and flow rate, opening and closing speed and ventilation and many other factors is difficult to accurately grasp easily lead to the design of the gate hoist load bias insufficient capacity or not shut down the gate and other issues. Poor design when the shutter body when a pressure fluctuation of flow separation caused by bottom gate, gate vibration may lead to adverse effects. With the increasing number of High Pressure Plane Gate, Gate hydrodynamic characteristics are more complex, its operational reliability issues become more prominent. Therefore, high head gate complex hydrodynamic characteristics, gate size and analyze the impact of hydraulic parameters gate hydrodynamic loads, high Pressure Plane Gate engineering design and application of urgent problems.

結果 (英文) 3:

The accident of plane gate discharge structures responsible for water gate, to prevent the accident responsibility dynamic emergency, dynamic reliability of water gate closed drainage directly affects the safety engineering. In the dynamic water closing process of accident of plane gate, gate gate effect of hydrodynamic load size, velocity, and water head and many factors such as ventilation and closing speed and difficult to accurately grasp the problem, easy to cause the gate hoist capacity or gate does not turn off the design load deviation. When the gate type design is bad, the pressure fluctuation caused by the flow separation at the bottom of the gate may bring about the adverse effects of gate vibration. With the increasing of the high head gate, the hydrodynamic characteristics of the gate are more complex, and the operation reliability is more prominent. Therefore, it is urgent to solve the problem of the design and application of the high head gate in order to study the complex hydrodynamic characteristics of the high head gate and to analyze the influence of the gate type and the hydraulic parameters on the water load.