沥青混凝土心墙坝渗流监测分析及处理研究  

Seepage monitoring,analysis,and treatment of asphalt concrete core wall dams

作　　者：梅华 何建新[2,3] 刘亮 MEI Hua;HE Jianxin;LIU Liang(Hydrology and Water Resources Management Center of The Ninth Division of Xinjiang Production and Construction Corps,Tacheng 834601,China;Xinjiang Agricultural University,Urumqi 830052,China;Xinjiang Key Laboratory of hydraulic engineering safety and flood control,Urumqi 830052,China)

机构地区：[1]新疆生产建设兵团第九师水文水资源管理中心,新疆塔城834601 [2]新疆农业大学,新疆乌鲁木齐830052 [3]新疆水利工程安全与水灾害防治重点实验室,新疆乌鲁木齐830052

出　　处：《水利建设与管理》2025年第3期49-57,共9页Water Conservancy Construction and Management

基　　金：新疆维吾尔自治区自然科学基金项目(2022D01A199);新疆水利工程安全与水灾防治重点实验室和兵团堤防工程安全与防灾重点实验室资助。

摘　　要：针对新疆麦海因水库沥青混凝土心墙坝出现的渗漏情况,采用划分渗流剖面并布置有效渗流监测设施的方法精确定位渗漏源。通过分析阶段性蓄水过程中的渗流监测资料,成功识别出了沥青混凝土心墙坝集中渗流通道的位置。结果表明,左右岸基岩内的渗透比降均小于0.5,基岩出现绕渗现象,顺河向Ⅲ剖面心墙中的渗透比降仅为1.09,远低于顺河向Ⅰ剖面的2.38,削减水头为11.95m,仅占总水头的45%。55%的水头压力在下游砂砾石坝体中耗散,导致P14、P15和P16各渗压计中具有较高的渗透压力,因此,渗流通道集中在右侧坝段,高程为1192.5~1199m,而主要渗流区域位于高程为1190~1199m的涵洞和沥青混凝土心墙交界处,渗漏量为30L/s。根据研究结果,制定了切实可行的渗漏治理策略,并对处理后的坝段进行了为期三年的跟踪观测。观测结果显示,处理效果良好,未发现异常流情况。In response to the seepage issue observed in the asphalt concrete core wall dam of the Maihaiyin Reservoir in Xinjiang,a method involving the division of seepage profiles and the arrangement of effective seepage monitoring facilities was employed to accurately locate the source of the leakage.By analyzing seepage monitoring data during the staged water storage process,the concentrated seepage pathways in the asphalt concrete core wall dam were successfully identified.The results show that the hydraulic gradient within the bedrock on both the left and right banks is less than 0.5,indicating the presence of bypass seepage.The hydraulic gradient in the core wall along the river’s III profile is only 1.09,far lower than the 2.38 in the I profile,with a head loss of 11.95m,accounting for only 45%of the total water head.The remaining 55%of the head pressure dissipates in the downstream gravel dam,leading to high seepage pressure readings in piezometers P14,P15,and P16.Consequently,the seepage is concentrated on the right dam section,with elevations between 1192.5 and 1199m,and the main seepage area is at the junction of the culvert and the asphalt concrete core wall at elevations between 1190 and 1199m,with a leakage rate of 30L/s.Based on the study findings,feasible leakage treatment strategies were developed,and the treated dam section was monitored for three years.The observation results showed good treatment effectiveness,with no abnormal flow detected.

关 键 词：沥青混凝土心墙坝 渗流剖面 渗流分析 渗漏处理措施 

分 类 号：TV697.13[水利工程—水利水电工程]