Prestressed Anchor Technology Research And Application In Slope Support At Dadu Huangjinping Hydropower

Huangjinping hydropower diversion, spillway slope complex geological conditions, making the prestressed cable construction is very difficult, seriously affected the slope of the construction schedule. For prestressed cable reinforcement supporting effect to meet the design requirements to ensure slope excavation period and operation period of security and stability, it is necessary to support construction of prestressed anchor analysis and research, so keep supporting open slope dig, to ensure construction safety.With Huangjinping hydropower diversion, construction of retaining flood of imports slope needs to determine the "technology of prestressed anchor station in the Dadu River Huangjinping slope supporting the research and application," the esearch topic, under complicated geological conditions of the pre-slope stress anchor construction technology research, to guide large-scale anchor construction, prestressed cable technology is also to promote the accumulation of basic data for continuous improvement.Through research, demonstration projects suitable for the prestressed cable type, structure, anchor material, cementing materials; demonstration and access to appropriate pre-stressed anchor design parameters, provide the basis for the design of slope works; based on the actual edge slope geological conditions, the study identifies the complex geological conditions, anchor holes into the hole process, and recommend appropriate anchor construction procedures and processes to guide the anchor construction. Engineering inspection results show that the prestressed cable construction quality to meet the design requirements, construction schedule to meet the contract requirements, slope construction safety.Project results not only effectively guided the prestressed anchor and support construction projects, but also for future similar construction provides an important reference.