Under the new situation of hydropower development

Yangfanggou hydropower station is the first large hydropower project under the EPC contract mode in China. During construction of the dam site slope

due to the characteristics of complex geological conditions

high and steep slope

huge scale and tight construction period

it was urgent to systematically carry out research on the key technologies of dynamic feedback design and stability control of high rock slope excavation. Relying on the integrated and efficient management mode and the mutual trust mechanism of this project

an interconnected man- agement system that deeply integrates design

construction and digitization was proposed

and a techni- cal team and innovation platform that closely integrate construction

design

geology

monitoring

scientif- ic research and information were established

which provided an important guarantee system for the sci- entific

safe and efficient construction of slope. Through systematic research and development of com- plete sets of complex technical problems in engineering

a method system of dynamic feedback analysis and decision optimization for large-scale complex high rock slope during construction period was estab- lished

which guaranteed the engineering safety and stability of the 300 m high rock slope in this mil- lion-kilowatt hydropower station. The relevant technical methods and research results have been summa- rized and refined to form a practical standardized method

which has the value of popularization and ap- plication.