渗流

Having proven the transformation between the analytical solution and some relevant classic formulas,suitable condition for each of these formulas is demonstrated.

根据模型解，逐一定量研究下述变量，如垂向入渗强度、河渠水位变动幅度、含水层结构参数如给水度和导压系数、计算点与边界之间的距离，对渗流过程的影响。

It is often tested by an unsteady state flow experiment and calculated by JBN method,which is only fit for Darcy flow through medium-high permeability with high velocity of displacement because of taking neither non-Darcy flow nor capillary attraction into account.

通常用非稳态流方法测定和用JBN方法计算它，但未考虑非达西流及毛管力的影响，故只适合于中高渗透岩石达西渗流的情形，且要求非稳态相对渗透率实验驱替速度较高。

Two-dimensional seepage flow of free-surface over cutoff wall has been solved by conformal transformation method in this paper. By introducing the hodograph plane and utilizing Schwarz-Christoffel transform, the mapping relational formula between the physical plane Z and complex potential plane has been deduced.

对于越过截渗墙的剖面二维含自由面的渗流，应用保角变换方法求解，通过引入速度矢端平面和应用Schwarz－Christoffel变换，推导出了物理平面Z和复势平面的映射关系式。

To resolve the problem, based on backpressure test theory and superposition principle, this paper designed a new test method, named Backpressure Isochronal Test.

以回压试井理论和渗流叠加原理为基础，提出了"回压等时试井"产能评价方法，该法所需测试时间与"单点法"大致相同，但能较准确地评价低渗气井产能。

Based on the first linearized Boussinesq equation, analytical solution of the transient groundwater model, which is used for describing phreatic flow in a semi-infinite aquifer bounded by a linear stream and subjected to time-dependent vertical seepage, is derived out by Laplace transform and the convolution integral.

在河渠边界控制下的半无限含水层中，对时变垂向入渗影响下的潜水非稳定渗流模型，利用Boussinesq第一线性化方法，通过Laplace变换并结合卷积原理，导出模型的解析解。

According to fully implicit method, seepage model of low-permeability fractured gas reservoirs are discretized with finite difference method, and corresponding numerical model, coefficient matrix and matrix element are obtained; then based on modern software engineering, numerical simulation software was correspondingly developed with Fortran95 programming language

按照全隐式离散化方法，采用有限差分方法对低渗裂缝性气藏渗流数学模型进行了离散，得到了相应的数值模型、系数矩阵和矩阵元素。然后基于现代软件工程的基本思想，用Fortran95语言开发了相应的数值模拟软件

Seepage mechanism is applied to deduce two kinds of osmotic grouting model (plane radial flow and ball-type centripetal flow). Security grade basic working condition and reliability index of grouting on sand-fixed is proposed. And formulize reliability analysis of grouting on sand-fixed combining engineering cases. 4. The mechanism of sand-fixed of grouting engineering and sand-fixed of biological engineering is described.

运用渗流力学对平面径向流、球形向心流两种渗透性注浆模型进行了推导，将可靠度理论引入注浆工程，提出了固砂注浆的安全等级、基本工作状态以及相应可靠度指标，并结合工程实例，对固砂注浆工程的可靠性分析过程进行了阐述。

In this paper, by using the research results of rock permeation mechanics, the author set up the hydraulic model of rock fractures firstly. Then, the author analyzed the current research results of rheology of ordinary portland cement and micro-fine cement grouts, and established the rheological model and the relationship of rheological parameters to hydraulic time.

本文首先借鉴岩体渗流力学的研究成果，建立了适合于研究浆液运动的岩体裂隙模型；然后对现有的水泥浆流变性的研究成果进行了综合归纳和分析，确定了浆液的流变模型和流变参数与水化时间的关系式。

Three analytical solutions are given including the wet front analysis solution of double medium soil column,the analytical expression of piezometric tube water head and saturation for steady state and the analysis solution of seepage in unconfined aquifer with a periodic boundary condition.

推导了双介质土柱表层水入渗的下渗锋面解析表达式、稳定状态时测压管水头分布与饱和度分布的解析表达式，并给出了有周期性边界条件的有限潜水层内渗流自由面的解析表达式。

In this paper, the analytical solutions of reservoir pressure in Laplace space are developed for planar linear flow and radial flow under the condition of constant pressure at inner and outer boundaries, and the pressure distribution curves in some point in the reservoir are obtained using Stehfest numerical inversion algorithm of Laplace transforms.

本文在内、外边界定压的条件下得到了平面单向流和平面径向流两种渗流形式在拉氏空间的解析解，利用Ste hfest数值反演方法给出了地层各点的压力分布曲线，由这些曲线可以清楚地看到流体的流动由不稳态流向稳态流过渡以及最后达到稳态流的过程。

The reasons of iron ions content overproof in grade Ⅱ desalting water system,such as variation water quality,contamination of regenerant , operation adjustment of pretreatment system and switching operation of bed were discussed.

对二级脱盐水系统中铁离子含量超标的原因，如来水水质发生波动、再生剂受到污染、预处理系统操作调整、床体运行切换等进行了论述。

You were hired to drum up new business, so go and do it.

公司雇你招徕新业务，你就做你的事好了。