Under the towering witness of the Qinba Mountains, major good news arrives from the banks of the Baishui River. On April 20, as the first gate opened and closed precisely, the surging river water rushed down along the newly built flood discharge and sand flushing sluice. The Datang Shiji Hydropower Station hub renovation project achieved the power generation and flood discharge target 10 days ahead of schedule, adding a new green development coordinate to the Northwest energy map.

This "energy pearl" nestled among the mountains of Wen County, Longnan, Gansu, has faced multiple challenges since construction began on November 18, 2024. The construction site is located at the border of Sichuan and Gansu, and the team not only had to cope with complex geological structures and an extremely limited working area of only 3,200 square meters, but also had to coordinate three participating units carrying out three-dimensional, multi-point operations on a "palm-sized" construction site. The project team innovatively adopted a "smart construction site management system," using drone inspections and intelligent sensor equipment for all-round monitoring, weaving a safety protection net within a tiny space. This achieved a triple breakthrough of zero safety accidents, fully excellent project quality, and ahead-of-schedule construction progress, earning full recognition from the owner.

"This is not only a victory in technical challenges, but also the crystallization of management wisdom," the project chief engineer said, pointing to the construction simulation diagram. The construction content includes the apron section, gate chamber section (including overflow dam), stilling basin section, riprap section, intake renovation, and metal structure fabrication and installation. Facing the dual pressure of funding and cost, the construction team flexibly applied the "dynamic cost control method," improving construction efficiency by nearly 20% through mechanisms such as joint material reserve and joint equipment scheduling.

The project resolved hidden dangers that had seriously threatened the safe operation of the power station due to years of operation, including severe clogging of the trash rack, serious accumulation of bed-load sediment in the diversion tunnel, and poor combined flood discharge and sand flushing performance of the rubber dam and discharge sluice. It also raised the flood control standard from a 20-year return period to a 100-year return period, increased annual power generation by 23% to 148 million kWh, equivalent to reducing carbon dioxide emissions by 147,600 tons per year. This water conservancy project, embodying the wisdom of its builders, has not only strengthened the defense line for river safety, but also danced brilliantly on the balance beam between management innovation and ecological protection. It vividly demonstrates the quality pursuit of infrastructure projects in the new era, injects green momentum into rural revitalization in Longnan, and accumulates successful experience for the management of similar projects and future market expansion.