1)bypass seepage绕坝渗流
1.Three-dimensional finite element analysis of left dam abutment seepage is carried out based on a proposed earth dam in order to study the bypass seepage law of deep and thick sand layer.为了研究深厚砂层坝肩绕坝渗流的规律,结合拟建的陕西省王圪堵水库土石坝工程,进行了左坝肩绕坝渗流的三维有限元分析,并以坝肩砂层渗透稳定为控制条件,进行了防渗墙延伸长度方案的比较研究,同时对传统的绕坝渗流计算方法水力学法所存在的问题进行了分析。
英文短句/例句
1.Study on the Analysis Method and the Anti-seepage Measures for the Seepage Around the Earth-rockfill Dam土石坝绕坝渗流分析方法及防渗措施研究
2.Observation and Analysis of Seapage Around Abutment in Left Bank of Liujiaxia Dam刘家峡大坝左岸绕坝渗流的观测与分析
3.Optimal Linewise Control of Dam-detouring Osmtic System for Concrete Dams with Heterogemous非均匀介质的大型混凝土坝绕坝渗流系统的最优线态控制
4.Analysis on the Dam Bypass Seepage on Right-bank in the Dam Site of Songta Hydropower Station松塔水电站坝址区右岸绕坝渗漏分析
5.Detection of dam leakage with isotope tracer method基于示踪方法的土石坝绕坝渗漏探测
6.Effect of Seepage in Layered RCCD on Seepage Field of Dam碾压混凝土坝层面渗流对坝体渗流场的影响
7.Research of the Earth Dams Seepage Field and Slope Stability Based on the Rain Infiltration;降雨入渗对土坝渗流及坝坡稳定性影响的研究
8.Influence of Impervious Body of Dam Foundation on Saturation Line and Seepage土坝坝基防渗体对浸润线和渗流量的影响分析
9.Seepage Field Numerical Simulation in the Body of Earth Rock Dam and Slope Stability Evaluation;土石坝坝体渗流场数值模拟及渗流作用下坝坡稳定性评价
10.Embankment dam seepage flow calculation theory and anti-seepage reinforcing measure土石坝渗流计算原理及防渗加固措施
11.Application of purdam grouting project in dealing with the shoulder of dam circle seeping;帷幕灌浆工程在处理坝肩绕渗中的应用
12.Seepage State Analysis and Evaluation for Wujiangdu Hydropower Station乌江渡水电站绕坝渗漏性态分析与评价
13.The Design of Dam Seepage Monitoring System and the Seepage Simulation with Computer;大坝渗流监测系统设计及渗流计算机模拟
14.Research on Seepage Calculation of Homogeneous Earth Dam with Cutoff Wall in Dam Foundation --Analysis of Observed Data of Main Dam for Chitian Reservoir坝基设有截水墙的均质土坝渗流计算新探——赤田水库主坝坝体渗流观测资料分析
15.Analysis on change pattern of groundwater seepage in the right abutment of Hunanzhen dam湖南镇大坝右坝肩地下渗流变化规律分析
16.Review and Prospect of Development of Seepage Control Technique for Earth Dams and Earth-Rockfill Dams土坝与土石坝渗流控制技术发展的回顾与展望
17.Study on Seepage in the Dam Base of Xiaolangdi Project on Yellow River;黄河小浪底水利枢纽工程大坝坝基渗流分析
18.Analysis of Improvement for Splitting Grouting to Earth Dam s Seepage Behavior;劈裂灌浆对土坝坝体渗流状况改善的分析
相关短句/例句
leakage around dam绕坝渗漏
1.This paper analyzes the main reasons of the generation of the leakage of the concrete dam(including the leakage on dam body, the leakage on dam base, and the leakage around dam), and according to the leakage on different parts, puts forward some corresponding patching measures.分析了混凝土坝产生渗漏(包括坝体渗漏、坝基渗漏、绕坝渗漏)的主要原因,根据不同部位的渗漏,提出了相应的修补措施。
3)flow field around spur dike丁坝绕流
1.3-D numerical simulation of flow field around spur dike using wall function and large coefficient method;大系数法与壁函数结合在丁坝绕流三维数值模拟中的应用
4)circumfluent spur dike绕流丁坝
5)dam seepage大坝渗流
1.Based on Guidelines for Reservoir Dam Safety Evaluation(SL 258—2000),a seepage stability evaluation for the dam of Xiashan Reservoir was carried out by analysis of the monitoring data of dam seepage with finite element method(FEM) and analysis of its operation behavior.按照SL 258—2000《水库大坝安全评价导则》要求,采用渗流观测资料分析、渗流有限元计算分析及运行表现分析方法,对峡山水库大坝渗流安全进行评价。
2.Correlation between factors has an effect on the analysis of dam seepage observation data.大坝渗流观测资料分析中,各因子间常存在不同程度的相关性,这种相关性有时会对分析效果产生较大的影响,另外,通常的回归模型为线性模型,难以精确反映一般为非线性函数的因变量的变化规律。
6)dam seepage flow大坝渗流
1.Rainfall and water level show lagging effect and nonlinear on dam seepage flow;and the relationship between rainfall and water level is coupled;therefore,the mechanism of dam seepage is very complex.降雨和库水位对大坝渗流表现出一定的滞后性和非线性,且降雨和库水位之间本身又存在一定的耦合关系,渗流的机理比较复杂。
延伸阅读
绕坝渗漏绕坝渗漏seepage flow through dam abutment raobs ShenlOU绕坝渗漏(seepage flow through damabutment)库水沿坝肩地段的透水岩带渗漏到下游的现象。由于坝端处于水库渗漏带与坝基渗漏带的衔接过渡段，因此，绕坝渗漏的渗漏条件、渗漏特点、研究内容与水库渗漏和坝基渗漏相似。绕坝渗漏严重的降低水库效益，引起滑坡或塌滑体复活，促使坝肩岩体和地下工程围岩的不稳定因素增加，甚至局部破裂，危及大坝或溢洪道等建筑物的安全。因此，每座水库都要查明坝肩地段的地质条件，分析渗漏程度并采取相应工程措施。 研究绕坝渗漏时，查明的问题与坝基渗漏相似。一般当上下游有支流、冲沟、河湾时，坝肩地形遭受不同程度的切割破坏，造成较大范围的迎水或泄水临空面，为库水入渗和排泄创造有利条件，并缩短渗径、增加水力坡降，容易产生绕渗。在第四纪堆积物区修建土石坝，如岸坡上崩坡积的块石土未彻底清除、冲洪积的砂砾石层未作防渗处理或处理不够，蓄水后将发生严重绕渗，增加大坝防渗体含水量，渗透水压力将使松散土产生渗透变形。又如，向河缓倾软弱结构面由于绕渗而产生泥化，使附近原有滑坡、塌滑体复活，甚至产生新的边坡变形，影响大坝稳定。在基岩区建坝，如坝肩风化岩体挖除不够，较大断裂破碎带、裂隙密集带或岩溶洞隙未做好防渗处理，防渗帷幕向岸里延伸的长度和深度不够，都可能产生较大绕坝渗漏。当坝肩岩体被断裂切割并有向下游缓倾的软弱结构面时，绕渗可使渗透压力增大，不仅增加了作用于岩体的推力，也使软弱结构面的抗剪强度急剧降小而减小了抗滑阻力，导致坝肩岩体产生破坏、滑移和上部结构开裂。如有与坝线近平行的陡倾而较宽断层泥、糜棱岩或裂隙发育程度较差的岩墙、岩层等阻水岩带时，倾向渗透压力的作用不容忽视。 地下水动态变化是在一定条件下某一水文地后结构特征的综合反映。水库蓄水前和运用期间，不断进行地下水动态观测和编制地下水等水位线图及主要离子变化曲线图，联系降水对地下水位、库水位涨落时间和变幅作对比，可预测是否发生绕渗并评价防渗效果。为防止和减少绕坝渗漏，通常要查明坝肩地段的地质与水文地质条件基础上，针对性地采取工程措施:如开挖(清除岸坡上崩坡积层、基岩全强风化带和不稳定岩体等)，修筑粘土或混凝土刺墙(尽可能插入相对隔水层，并使刺墙与大坝防渗体紧密接触)、斜坡铺盖(封闭贯通L下游的集中渗漏带进口)、帷幕灌浆(堵塞深部透水岩带的孔洞裂隙，注意选择适宜的灌浆工艺和材料)、防渗井(沿断层等集中渗漏带开挖，清除破碎物质后回填混凝土、和下游岸坡排水孔洞等。
