On July 17, the intake tower gate of the headrace tunnel of Cambodian Upper Tatay Hydropower Station—invested in and constructed by CHMC—was smoothly lowered into its gate slot under the traction of a bidirectional gantry crane, marking the successful completion of the gate installation. This achievement ensures the safe flood management of the project’s water conveyance and power generation structures during the 2025 rainy season.

The headrace tunnel of Upper Tatay Hydropower Station extends approximately 8.8 kilometers and adopts a shore-tower intake design. The intake tower gate has an opening measuring 7.8 meters wide and 8.0 meters high, with the gate itself weighing about 122 tons. As a key safety component, the gate ensures the safe construction of the headrace tunnel and powerhouse and reliable operation of the Station in the future. It plays a critical role in responding to emergencies and preventing accident escalation by enabling rapid flow cut-off and isolated maintenance. Installed atop the intake tower is a 2×1250 kN bidirectional bridge-type hoist, which performs underwater gate lifting and lowering operations in coordination with a dedicated hydraulic automatic hooking and hoisting beam.

Cambodian Upper Tatay Hydropower Co., Ltd. will further strengthen management and control over safety, quality, progress, and investment, ensuring the project’s construction proceeds smoothly and in an orderly manner, and making every effort to achieve the goal of on-schedule power generation of the project.

(By Wang Yiming / Text & Photos)