【摘要】 在地下水位资料不足的情况下,通过假设地下水补给边界条件进行试算和反演以满足所给的地下水位资料,从而模拟出自然状态下巴贡水电站坝址区的三维渗流场,在此基础上对施工期和运行期的三维渗流场进行了有限元计算和分析。由于坝址区的F8大断层贯穿左岸坝基底部岩体、水电站引水管道处岩体以及溢洪道底部岩体,因此,特别针对F8大断层及其附近部位进行了精确的模拟,对其在各个工况下的渗透坡降进行了对比分析,为F8大断层的加固处理提供依据。更多还原

【Abstract】 In the case of limited data of underground water level, the 3-dimensional natural seepage field at the dam site of Bakun hydropower project is simulated by trail calculation and inversion after assuming supply boundary of underground water. On base of natural seepage field the 3-dimensional seepage fields in construction stage and operation stage are calculated and analyzed. The fault F8 runs through the rock under the dam base on the left bank, around the diversion pipe, and under the bottom of spillway, so especially the fault F8 and its vicinity are simulated accurately and the seepage gradients of fault F8 under different conditions are analyzed. The results can be referenced by design.更多还原