戈兰滩水电站导截流工程设计

根据戈兰滩水电站坝址处地形、地质和工程布置特点，施工导流采用了两岸隧洞泄洪，河床一次性断流的导流方案。在对河流水文、地质特性等方面充分论证的基础上，合理地选择导流洞布置、断面尺寸和支护方式，确定了导流围堰的结构、防渗和防护措施，以及有针对性选择截流方案。本枢纽导截流工程的选择，对于类似工程的导流设计有一定的参考价值。

Engineering Design on River Diversion and Closure of Gelantan Hydropower Station

The diversion scheme on discharging flood by the tunnels on both banks and the water interception done only one time is adopted according to the topog raphy and geology at the damsite, and the characteristic of the project layout o f Gelantan Hydropower Station. Based on fully demonstrating the hydrologic and g eological characteristic of the river, the layout of the diversion tunnel, secti onal dimensions and the support method are reasonablly selected and the structur e of the diversion weir, the anti-seepage and protection measures are also deter mined and the river closure scheme is selected specially. Selection of the river diversion and closure scheme for this project is of some importance value to ri ver diversion design for simillar projects.