大花水水电站右坝肩抗滑稳定边界地质条件复核分析  

Stability analysis of rock anti -sliding in end of the right arch dam abutment of Dahuashui Hydropower Station

作　　者：张毅[1] 

机构地区：[1]中国水电顾问集团贵阳勘测设计研究院,贵阳贵州550008

出　　处：《水电勘测设计》2008年第2期18-21,共4页

摘　　要：大花水水电站高薄拱坝位于顺向河谷上，左岸为软硬岩相间的逆向坡，右岸为硬岩顺向坡。右坝肩下游约160m为垂直河向的陡壁（临空面），山体单薄，坝肩岩体内断层、裂隙发育，均对坝肩抗滑稳定不利。本文在前期勘测资料及施工期开挖揭露实际地质情况的基础上，对右坝肩各组结构面发育特征、力学参数及沿各（组）结构面滑动破坏模式进行了综合的分析研究与复核。The high and thin arch dam of Dahuashui has a height of 134. 5m and is the highest one completed of similar type so far in domestic. The dam lies in the longitudinal fiver valley which is alternated with soft and hard rocks, a gravity abutment is built on left the bank for the asymmetry of valley, most dam foundation is in limestone stratum, foundation of the fight abutment is comparable integrated but with well developed small faults and fissures. The stability analysis of rock anti - sliding in end of the fight arch dam abutment is analyzed and studied deeply according to the investigation datum of prophase and developing characters of each structural joint after excavation of the fight abutment, actual and credible geological datum to the anti - sliding stability calculation of the fight abutment are offered.

关 键 词：大花水电站 高薄拱坝 右坝肩 抗滑稳定 分析研究 复核 

分 类 号：TV74[水利工程—水利水电工程] TU271.103[建筑科学—建筑设计及理论]