龙滩水电站蠕变体B区折断面及折断错滑面成因分 析

通过对广西龙滩水电站左岸边坡蠕变体B区折断面和折断错滑面地质特征,变形特征,滑带充填物特征以及力学参数研究,结合监测,岩体风化以及构造特征、表层岩土体滑移-牵引等特征分析,认为折断面和折断错滑面的形成主要是由于边坡岩性以及河水侵蚀等作用下,岩体的风化差异所造成的,而且在目前有效的工程处理下,由监测资料可知,边坡变形波动较大,变形量值小,没有明显的滑移趋势,稳定性较可靠。

CAUSES OF THE FRACTURE PLANE AND SLIDE SURFACE IN CREEP ROCK MASS ZONE B ON THE LEFT BANK OF LONGTAN HYDROPOWER STATION

This paper analyses the characteristics of geology and deformation,filling at sliding zone,mechanical parameters of the fracture plan and slip surface of the fracture in the creep rock mass zone B at Longtan hydropower station in Guang-xi province.The analysis is combined with monitoring data,rock weathering,structural feature of slope and slide-tow of slope surface rock mass.The paper draws the conclusion that the cause of fracture plane and slide surface of the fracture was due to a combined effect of the slope lithologic,the erosion by water,and the different weathering characteristic of different rock masses.The analysis of monitoring data also shows that the slope deformation value was little,the deformation trend was not obviously and the slope was stable.