【摘要】 本文在厘定坝基渗透模型和边界条件的基础上,运用数值模拟的方法,对坝基渗流场水力坡降和坝基渗透稳定性进行研究。研究表明,目前大坝的运行状况正常;水库在缓慢蓄水过程中,截水槽、坝后逸出带和断层破碎带的水力坡降远小于允许坡降,不会危及坝基的稳定性。这为水库投入正常水位(319 5m、327 5m、331 8m)运行提供了理论依据。更多还原

【Abstract】 Based on the seepage flow model of dam foundation, the method of numerical simulation is used to study the hydraulic gradient of seepage field on dam foundation and the dam foundation’s seepage stability .The results prove that the present dam is in the normal operation, the hydraulic gradient of cutoff trench and belt of fracture is much smaller than the allowable hydraulic gradient during the slow storage of the reservoir. It influences to the characteristic of seepage field, but it does not danger to the dam foundation stability. It gives the theoretical support of the reservoir’s normal work. 更多还原