Abstract: The anti-sliding stability of the rock and soil mass of the dam foundation and dam abutment plays an important role in the safe operation and engineering investment of the reservoir hub project. Shijiaxia reservoir is a concrete gravity dam. The engineering geological conditions of the dam foundation and dam foundation are complex, and the dissolution cracks and ferritization alteration in the lower part of the right bank are strongly developed, which will have a great impact on the sliding stability of the dam foundation and dam abutment. In this paper, the polar stereographic projection and theoretical calculation methods are used to analyze the anti-sliding stability of various structural planes in the rock mass on both banks, and the consolidation + curtain grouting treatment measures are proposed for the unfavorable parts of anti-sliding, which solves the anti-sliding stability problem of the dam body and bank slope rock mass.

Key words: stability analysis, rock engineering classification, polar stereographic projection, grouting treatment

摘要： 坝基和坝肩岩土体的抗滑稳定性对水库枢纽工程的安全运行及工程投资起至关重要的作用，石家峡水库为混凝土重力坝，坝肩、坝基工程地质条件较为复杂，右岸下部溶蚀裂隙及褐铁矿化、碳酸盐化蚀变发育强烈，对坝基、坝肩的滑移稳定将产生较大影响。文中运用极射赤平投影和理论计算方法，对两岸岩体中各种结构面进行抗滑稳定性分析，并对抗滑不利的部位提出了固结+帷幕灌浆处理措施，解决了坝体及岸坡岩体抗滑稳定问题。

关键词: 稳定性分析, 岩体工程分类, 极射赤平投影, 灌浆处理