新疆阜康抽水蓄能电站含泥夹层变形体稳定性分析  

Stability Analysis of Mud Interlayer Deformation Body of Xinjiang Fukang Pumped Storage Power Station

作　　者：黎康平 赵庆[1] 白兴平[1] 张振国 侯回位 LI Kangping;ZHAO Qing;BAI Xingping;ZHANG Zhenguo;HOU Huiwei(PowerChina Northwest Engineering Corporation Limited,Xi'an 710065,China;Post-Doctoral Research Center,Northwest Engineering Corporation Limited,Power China,Xi'an 710065,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065 [2]中国电建集团西北勘测设计研究院有限公司博士后科研工作站,西安710065

出　　处：《西北水电》2024年第2期44-51,共8页Northwest Hydropower

基　　金：陕西省自然科学基础研究计划(2024JC-YBQN-0473).

摘　　要：新疆阜康抽水蓄能电站上水库0号变形体底部含泥夹层较为发育,严重威胁工程稳定运行。为了评价含泥夹层变形体稳定性,基于变形体有限元分析以及表面位移、测斜孔位移监测数据,研究变形体失稳破坏特征及位移时空变化规律。结果表明:变形体在天然情况下处于稳定状态,在压坡体的作用下,边坡整体安全系数由1.33提高至1.51,安全系数较天然状态下增加13.5%。压坡处理后变形体稳定性明显提高,但是含泥夹层的强度参数对变形体稳定性影响较大,含泥夹层强度参数降低40%,变形体整体安全系数低于1.0。变形体各表面变形测点累计水平位移最大8.56 mm,累计垂直位移最大10.03 mm;测斜孔上下游与左右岸最大平均位移不超过0.6 mm。变形体的变形主要表现为沿含泥夹层蠕滑变形,应在工程施工、水库蓄水及运行期间对变形体不同部位进行系统的变形监测工作。The muddy interlayers at the bottom of the deformation body of the upper reservoir of Fukang Pumped Storage Power Station in Xinjiang are relatively developed,which seriously threatens the stable operation of the project.Based on the finite element analysis of the deformation body and the monitoring data of surface displacement and inclined hole displacement,the instability failure characteristics of the deformation body and the temporal and spatial variation law of displacement are studied.The results show that the deformation body is in a stable state under natural conditions.Under the action of the pressure slope,the overall safety factor of the slope increases from 1.33 to 1.51,and the safety factor increases by 13.5%compared with the natural state.The stability of the deformed body is obviously improved after the pressure slope treatment,but the strength parameters of the mud interlayer have a great influence on the stability of the deformed body.The strength parameters of the mud interlayer are reduced by 40%,and the overall safety factor of the deformed body is less than 1.0.The maximum cumulative horizontal displacement of each surface deformation measuring point of the deformable body is 8.56 mm,and the maximum cumulative vertical displacement is 10.03 mm.The maximum average displacement of the upstream and downstream of the measuring hole and the left and right banks does not exceed 0.6 mm.The deformation of the deformed body is mainly manifested as creep deformation along the mud interlayer.Systematic deformation monitoring should be carried out on different parts of the deformed body during construction,reservoir impoundment and operation.

关 键 词：边坡稳定 变形监测 失稳模式 有限元分析 阜康抽水蓄能电站 

分 类 号：TV641[水利工程—水利水电工程]