电厂山区性河流取水工程安全设计分析

通过对代表性山区河流电厂的取水工程安全实例分析 ,根据取水方式不同 ,建议应采取的措施分为 :直接在天然河道上布置取水构筑物时 ,取水头部上下端加设三角形挡沙板 ,取水口上游设导沙丁坝 ,抬高取水头高程和进水底槛高程 ,并且可考虑设置两套取水系统 ,枯水期直接利用河道取水头取水 ,洪水期从移动式泵车取水 ;在河道上设置拦河低坝取水时 ,必须设置配套取水防沙设施 ,如排沙闸或冲沙闸 ,进水闸前设导沙坝 ,冲刷闸前设导沙坎 ,泄洪闸前设冲沙廊道和导流堤 ,还可在河道上设置潜水丁坝等。

Analysis on Safe Engineering Design of Water Catching from the River in Mountainous Area by Power Plant

The analysis was based on engineering project cases of several representative power plants in mountainous area. Different modes of water catching must take different measures to ensure safe water catching. For water catching directly from the river, spur dikes must be installed both at the upper and lower parts of water head and groin at upper river to raise the altitude of water inlet. Two systems could even be installed, the fixed one could be used during low water season and the moving pumps used during flood season. For water catching from the low dam on the river, it must set assistant facility such as sand discharging gate. Spur dike guiding for sand sediment, corridor for scouring sand and bank for river diversion were usually built to avoid the block.