关键词: 危岩体, 高边坡稳定性, 安全风险, 高边坡治理, 杨房沟水电站

Abstract: The construction of Yangfanggou Hydropower Station was threatened by wide distributed dangerous rocks at high location area, which was evaluated as grade I in the geological risk assessment. For ensuring the safety of construction, treatment for high elevation dangerous rock was necessary. Under the EPC construction mode, the designers and construction staff carried out in-situ exploration and survey, and several measures were adopted such as clearing scattered rock, supporting the shallow fractured rock by cables, spraying concrete with reinforcing net and active or passive protection measures. These measures were proved to be effective and helps to realize none accident.

Key words: dangerous rock, high slope stability, safety risk, high slope treatment, Yangfanggou Hydropower Station