摘要
以牙根水电站为例,采用节理玫瑰花图法分区统计并对比分析了坝区左岸及右岸39个平硐2 000多条节理,认为坝区发育的大量结构面为NW向的左行扭动在岩体中派生的节理,并分析了缓倾角结构面分布特征,指出Ⅱ-Ⅲ级结构面的限制作用而导致其不稳定与连续性差、不同级别的松动岩体结构面间具有牵动制约的发育规律。
Taking the Yagen Hydropower Station for an example,more than 2,000 joints in 39 adits on the left and right bank are counted and analyzed by using the method of rose diagram.According to the analysis of different areas,it can be obtained that large numbers of structural planes in dam region are the derived joints of NW left-twist.Based on the distribution characteristics of structure planes with low inclination angles,it points out that the restriction of structure planeⅡ-Ⅲ leads to the poor continuity and instability of structure planes;different ranks of structural planes on loosened rock mass affect each other and it limits the development regularity of structure plane.
出处
《水电能源科学》
北大核心
2010年第8期52-54,169,共4页
Water Resources and Power
基金
湖北省教育厅自然科学研究基金资助项目(D20081303,D20091302)
