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基于饱和-非饱和土力学渗流理论,运用GEO-SLOPE软件包SEEP/W模块对九松山副坝进行稳定渗流有限元计算。选取0+175、0+580和0+820等3个典型断面,结合渗流观测数据,通过当前库水位工况的计算,反演各筑坝材料渗透系数与空隙水压力关系曲线,复核汛限水位、设计水位及校核水位工况下的浸润线、渗透坡降及单宽渗流量等工作参数,结果表明坝体防渗设施运行良好,坝体渗透稳定,为后续大坝稳定性计算奠定基础。
Based on the saturated-unsaturated soil mechanics seepage theory, the SEO / W module of GEO-SLOPE software is used to calculate the steady seepage of JiuShanShan secondary dam. Three typical sections of 0 + 175, 0 +580 and 0 + 820 are selected. Based on the seepage observation data and the calculation of the current reservoir water level conditions, the relationship curve between the permeability coefficient of the dam materials and the pore water pressure is inverted and the flood control limit Water level, designed water level and checking the infiltration line, infiltration slope and single-percolation seepage flow conditions, the results show that the seepage control dam works well and the seepage of the dam body is stable, which will lay the foundation for subsequent dam stability calculation basis.