关键词: 工程水文设计, 径流量, 洪水, 输沙量, 卡洛特水电站, 吉拉姆河, 巴基斯坦

Abstract: The Karot Hydropower Station, located in the Jhelum River Basin in Pakistan, is the first hydropower investment project of the “China-Pakistan Economic Corridor”. In the process of engineering hydrological design, in addition to collecting long series observed data of the hydrological stations in the basin, plenty of hydrological field work was carried out based on the design needs, such as setting a targeted hydrological (water level) station to observe the water level and flow in the dam site, measuring the underwater terrain, and carrying out sediment sampling and laboratory analysis and so on. All these provide reliable basic information for engineering hydrological design. The average annual flow of the Karot dam site is 819 m3/s, the runoff is 25.83 billion m3, the design flood peek of 5 000-year is 29 600 m3/s, and the average annual sediment transport volume is 38.12 million tons. A series of hydrological achievements provide effective results for determination of engineering scale, engineering layout and electromechanical selection, and technical reference for river planning and hydropower development in Pakistan.

Key words: hydrological design, runoff, flood, sediment transport, Karot Hydropower Station, Jhelum River Basin, Pakistan