三维渗流,three dimensional seepage
1)three dimensional seepage三维渗流
1.Coupling model ofthree dimensional seepage and land-subsidence for dewatering of deep foundation pit in loose confined aquifers;松散承压含水层地区深基坑降水三维渗流与地面沉降耦合模型
2.The paper discusses the determination of permeability coefficient of sand and gravel, based on the back analysis ofthree dimensional seepage flow theory, thus providing sound design basis for antiseepage treatment.采用三维渗流理论对砂卵石层进行反演计算 ,根据覆盖层地质条件 ,建立三维渗流数学模型 ,然后给出一个渗透系数值 ,计算未建库前的地下水位 ,并与勘察所知的实际水位相比较 ,若两者不一致 ,则调整渗透系数 ,直至计算水位基本符合实测水位 以确定河床砂卵石层的渗透系数 ,为防渗处理提供可靠的设计依
3.For understanding the motion law of underground water and the control effect of seepage-proof measures,three dimensional seepage calculation analysis for the power plant workshop dam section is conducted.为了解厂房坝段地下水运动规律、渗流控制措施作用,对电站厂房坝段进行了三维渗流计算分析,结果认为:电站厂房段渗流控制措施的选择和布置,从整体上看比较合理;从扬压力等值线分布图来看,海漫段底板所承受的渗透压力较大。
英文短句/例句
1.Three-Dimensional Seepage Prediction and Control of Lixi Tailings Dam栗西尾矿坝三维渗流预测与控制研究
2.Research on Calculation Method of Seepage Discharge for Complicated 3-D Seepage Flow Field Based on FEM;基于有限元法的复杂三维渗流场渗流量计算方法研究
3.Seepage Characteristics of Rock-Soil Mediums and Finite Element Analyzing on Three-Dimensional Seepage Flow in Heihe Water Conservancy Project;黑河引水工程岩土介质的渗透特性及三维渗流有限元分析
4.Seepage Control Effect of Static Pressure Grouting in Dam Shell for Danjiangkou Earth-rock Dam Ⅱ:Three-dimensional Seepage Calculation丹江口土石坝砂卵石坝壳静压注浆渗控效果研究Ⅱ:三维渗流计算
5.Improved adjustment method of compound element conductivity matrix for calculating 3D seepage field with free surface改进复合单元渗透矩阵调整法求解自由面三维渗流场
6.Study on Three-dimension Seepage and Abutment Stability of Jinping High Arch Dam;锦屏一级高拱坝三维渗流场及坝肩稳定性研究
7.Three-dimensional Seepage Analysis of Powerhouse Dam Section of Xixia Institute Anti-regulation Reservoir西霞院水库电站厂房坝段三维渗流计算分析
8.Three Dimensional Seepage Analysis on Diversion Tunnel of Jinping No.2 Hydropower Station锦屏二级水电站引水隧洞三维渗流分析
9.Three-dimensional Stress-seepage Field Interaction Coupled Analysis and Application三维渗流与应力场耦合计算分析及应用研究
10.3-D Finite Element Analysis on Seepage Field of Left Abutment of Xigu Hydropower Station溪古水电站左岸三维渗流场有限元分析
11.Seepage Parameter Selection and Three-dimensional Seepage Inverse Analysis for Lixigou High Stack Dam高堆尾矿坝堆积特性及三维渗流数值分析研究
12.THREE-DIMENSIONAL SEEPAGE-STRESS COUPLING ANALYSIS OF BRIDGE FOUNDATION BEHAVIORS INDUCED BY PRECIPITATION降水对桥基影响的三维渗流-应力耦合分析
13.A PARALLEL COMPUTATION FOR 3D COMPLEX SEEPAGE FLOW USING OpenMP用OpenMP实现三维复杂渗流场的并行计算
14.Study on Seepage Analysis and Anti-Seepage Measures by 3-D Fem of Bingling Hydropower Cofferdam;炳灵水电站土石围堰三维有限元渗流分析及防渗措施研究
15.Use of Three-dimensional Finite Element Seep-simulated Computation in the Seepage-control Design of Manghekou Reservoir三维有限元渗流模拟计算在蟒河口水库防渗设计中的应用
16.The Seepage Control from Ash Lagoon and the Application of Three Dimensional Mathematical Model贮灰库渗流控制及三维等参元数学模型的应用
17.The 3-D Finite Element Analysis for Unsteady Seepage in Excavation Engineering;基坑工程非稳定渗流场的三维有限元分析
18.Displacement Mechanisms of 3-D s Pore Network and Software Design of Micro-flow Simulation;三维孔隙网络模型渗流机理算法及软件研制
相关短句/例句
three-dimensional seepage三维渗流
1.Soil of consolidation with partially penetrated vertical drains under complicated loadings consideringthree-dimensional seepage in soil beneath vertical drain;复杂荷载作用下考虑下卧层三维渗流的未打穿竖井地基固结分析
2.Calculation problem ofthree-dimensional seepage infiltration surface is discussed in this article.应用渗流理论建立了三维渗流浸润面基本方程,并给出三维渗流浸润面分析方法。
3)3-D seepage flow field三维渗流场
4)three dimension seepage calculation by ModflowModflow三维渗流计算
5)D unconfined seepage三维无压渗流
1.Free surface seepage problem is transformed into overflow surface determining by overall consideration of overflow surface boundary conditions of 3-D unconfined seepage problem, and an overflow surface iteration method of 3-D unconfined seepage is provided by integration of seepage matrix adjustment and element abandoning skill.全面考虑三维无压渗流问题中溢出面上的边界条件 ,将渗流自由面的确定问题转化为确定溢出面 ,同时结合使用渗透矩阵调整方法和丢单元技巧 ,给出了三维无压渗流问题的溢出面迭代方法。
6)three-dimension seepage model三维渗流模型
延伸阅读
达西渗流定律流体在多孔介质内运动的基本规律，也是从宏观角度描述渗流过程的统计规律。这个定律是1856年法国水利工程师H.-P.-G.达西为解决水的净化问题从大量实验中总结出来的。达西对水通过均匀砂层的缓慢流动作了大量实验,研究表明：单位时间流过砂层的体积流量Q与横截面积A、测压管水头差h1-h2成正比,与流过的砂层长度L成反比：式中Q/A=v为渗流速度;(h1-h2)/L=J为水力坡度。上式也可写成： v＝KJ， (1)式中 K为标志渗流能力大小的实验常数，称为渗透系数。它既与砂层的结构有关，又与流过的流体性质有关。由量纲分析知，,其中ρ、μ分别为流体的密度和动力粘性系数；g为重力加速度；k称为介质的渗透率。式(1)又可写作： 。 (2)式(1)或式(2)都是达西渗流定律，它表示渗流速度与水力坡度呈线性关系，故称达西线性渗流定律。实验发现,随着雷诺数Re的增加,多孔介质中的流动状态经历三个区域：①线性层流区：粘性力占优势，达西定律成立,上限约在Re=10左右；②非线性层流区（过渡区）：为主要被惯性力制约的层流，达西定律不成立，上限约在Re=100左右，在上限附近开始有层流到湍流的过渡；③湍流区：惯性力占优势，达西定律不成立。由此可见，从上限雷诺数方面偏离达西定律与层流到湍流的过渡不是完全等价的。在渗流速度很低时，流体与介质间的表面分子力作用显得更为重要。部分液体的滞流现象使孔隙度发生变化，从而引起渗透率的相应变化。实验表明，这时孔隙度和渗透率均随渗流速度的增加而增加，速度到某一临界值后不再变化，因此不遵循达西定律。在雷诺数大于上限Re数的情况下，应该用"渗流的二项式定律"代替达西定律，即J＝Av＋Bv2，式中A、B为决定于流体和介质性质的常数。在雷诺数小于下限Re数情况下，非线性渗流定律的一般形式可写为： ，式中f(J)为小雷诺数情况下渗透率随水力坡度的变化函数关系，由实验确定。以上主要是单相流体达西渗流定律；对于多相流体，达西定律对每一相仍然成立，只需将渗透率修正为该相的相渗透率即可。参考书目J.Bear, DynamicsofFluidsinPorous Media,American Elsevier,New York,1972.
