西安市黑河水库左坝肩渗漏与防渗三维数值模拟研究

针对西安市黑河水库左坝肩渗漏这一重大工程实际问题展开研究与计算 .应用三维有限差分方法对左坝肩单薄山梁的初始渗流场、蓄水后的渗流场进行数值模拟 ,分析渗漏方式、计算相应的渗漏量 ,说明断层是集中渗漏通道 .同时 ,建立帷幕灌浆防渗仿真模型 ,模拟防渗帷幕对渗流场的作用效果 ,并对不同帷幕下限高程的帷幕方案的防渗效果进行对比择优 .计算结果对实际工程的决策与治理提供重要的依据

Three-dimension numerical simulation of leakage and leak-proof in left dam abutment of Heihe reservoir

A significant actual engineering problem about water leakage in left dam abutment of Heihe reservoir was studied and calculated. Applying three-dimension finite-difference method, seepage flow under conditions of nature and high hydraulic head was simulated, the way of percolation was analyzed and the quantity of leakage in left dam abutment of Heihe reservoir was calculated. A fact that the fault is intensive percolated passage was verified through calculation. At the same time, the simulation of leak-proof with grouting heavy curtain is used to simulate variation of flow domain. Comparing leak-proof effect of heavy curtain in different lower limit of altitude, the optimal schema is proposed. All results are of important referential value to the decision and design of actual engineering.