CAJ | 학술논문

为解决水库建成后渗漏较为严重的问题,依据黑龙江省绥化市红兴水库初期蓄水失败后补充的地质勘探资料,分析水库渗漏的主要原因是库区内的粘土层分布不连续.采用三维数值模拟计算,建立红兴水库区地下水流概念模型及其数学模型,运用FEFLOW 软件的剖分功能对研究区进行了刻画;在此基础上,对无防渗方案和拟修4种防渗墙方案的防渗效果进行了模拟预测和对比.结果表明:有坝段防渗对渗漏总量的控制具有十分明显的作用,可以使水库渗漏总量减少约70%;渗漏量及渗透比降基本随防渗长度的增大呈线性趋势减小;南岸东侧防渗1 000 m、西侧防渗1 700 m时,为防渗效果最好的方案.
위해결수고건성후삼루교위엄중적문제,의거흑룡강성수화시홍흥수고초기축수실패후보충적지질감탐자료,분석수고삼루적주요원인시고구내적점토층분포불련속.채용삼유수치모의계산,건립홍흥수고구지하수류개념모형급기수학모형,운용FEFLOW 연건적부분공능대연구구진행료각화;재차기출상,대무방삼방안화의수4충방삼장방안적방삼효과진행료모의예측화대비.결과표명:유패단방삼대삼루총량적공제구유십분명현적작용,가이사수고삼루총량감소약70%;삼루량급삼투비강기본수방삼장도적증대정선성추세감소;남안동측방삼1 000 m、서측방삼1 700 m시,위방삼효과최호적방안.
After the construction of Hongxing reservoir in Suihua City, Heilongjiang Province, a water storage test showed that the reservoir has a severe seepage problem. According to the field survey works, the main reason of the severe seepage is discontinuous distribution of clay at surface of the reservoir. Based on the analysis of hydrogeological conditions and characteristics of groundwater flow, FEFLOW was adopted to construct the groundwater numerical model for the study area. The seepage fields under the conditions of five different seepage control schemes (no impervious wall and four types of impervious wall)were simulated by using three-dimensional groundwater simulation model. The results showed that the seepage-control of the section with dam is very effective, it can decrease 70% of the total reservoir seepage quantity which without any seepage-control conditions. The seepage quantity and seepage gradient linearly decreased with increase of seepage-control length. The best effective scheme for seepage-control is the whole dam section with impervious wall and 1 000 m and 1 700 m impervious wall in east and west part respectively of the reservoir south bank.