Abstract: About 160 m high, the side slope at the left bank of Pingtou dam is nearly vertical. On the slope surface, considerable potential dangerous rock masses and partial concave rock cavity were found, as well as 35°~45°ancient landslide deposit of bulk and crushed stones and soils on the top, which was a threat. Based on technical and economical comparison between the traditional reinforcing treatment scheme and the new flexible protection network treatment scheme, the latter was used to protect the side slope. It was of the advantages such as easier construction, higher speed and less interference to the rock mass. It was of good effect, worthy reference.

摘要： 坪头水电站闸首左岸工程区边坡近乎直立，高约160 m，坡面存在较多潜在危岩块体和局部凹岩腔，顶部为约35°~45°的块碎石土古滑坡堆积，坡面存在滚石及人畜活动，危石威胁闸首建筑物施工及运行期安全。通过对传统加固处理方案和新型柔性防护网处理方案进行技术经济综合对比，最终采用后者对边坡进行防护处理设计，有效解决了高陡边坡施工难度大、进展缓慢、施工交叉干扰等问题，避免了危岩体扰动，防护效果良好，可为其他高陡边坡防护提供借鉴。