渗流

Method\ Percolation of multiple-hole horizontal well is exchanged to radial percolation by applying conformal transformation theory and local percolation restriction .

应用保角变换原理和局部渗流阻力的概念，将多分枝水平井渗流问题转变为平面径向渗流问题，从而简化了求解过程。

With the new model and the program, steady seepage field in work period, free surface position variable law with time at upper reaches in unsteady seepage period and seepage field variable law on the condition of different seepage coefficient and water decrease speed are stimulated.

利用建立的模型和编制的程序能模拟正常运行期的稳定渗流场、非稳定渗流期上游水位变化时自由面位置随时间的变化规律以及不同的水位下降速度时渗流场的变化规律。

Numerous impermeable underground structures exist in urban seepage field. Since the corner of the structure is singular point and the dimension of the structure is negligibly small compared with the whole urban seepage field, it is difficult to model seepage field in urban area with existing methods.

城区渗流场中地下阻水结构物众多，由于结构物角点为奇异点，而且结构物的尺寸跟整个渗流场的尺寸相比起来非常小，这导致现有的计算方法难以对城区渗流场进行模拟分析。

Actually,there are some problems to be improved in Joshi's formula.3-D analytical productivity equation of horizontal well in infinite-acting reservoir with sealed boundary is derived.

对Joshi公式中垂直方向渗流阻力分母上少π的问题、偏心距的处理问题以及简化的二维渗流场与三维渗流场之间的差异问题进行了研究。

For the problem of Joshi's formula without π in the denominator of vertical seepage resistance term and the treatment of eccentricity as well as the differences between 2-D and 3-D seepage flow field, corresponding improvement method was proposed.

推导出了上下封闭边界中无限大油藏水平井的三维稳态产能解析公式，针对Joshi公式中垂直方向渗流阻力分母上少π的问题，偏心距的处理问题以及简化的二维渗流场与三维渗流场之间的差异问题进行了研究，并提出相应的改进方法。

The seepage in transfixion and non-transfixion fracture network is analyzed. Based on the analysis, the effect of fracture geometry parameter for fracture network equaling to continuum medium is valued. The effect of nonlinear seepage and local water head loss for seepage field is researched.

对贯通裂隙和非贯通裂隙网络进行渗流分析，据此评价了裂隙几何参数在裂隙网络等效成连续介质时的影响，同时研究了非线性渗流和局部水头损失对渗流场的影响效应。

The network seepage flow analysis method of rock masses is a numerical method compatible with Block Element Method on the basis of the assumption that the rock blocks are unpermeable while the discontinuities are permeable.

岩体网络渗流分析方法是在假定岩石块体不透水、岩体中渗流仅通过结构面进行的基础上建立起来的一种与块体单元法配套的岩体渗流数值模拟方法。

This dissertation makes horizontal well and symmetric multibranch horizontal wells as research object, according to reservoir characteristics and the seepage process of horizontal well, using multidisciplinary knowledges comprehensively including reservoir geology, reservoir seepage theory, point source function, Green function, conformal transformation, partial differential equation and computational mathematics et al, then researches theory and method suitable for describing seepage process and productivlty calculation of horizontal well.

本文以水平井和对称多分支水平井为研究对象，从油气藏的储层特征和水平井的渗流过程出发，综合运用油气藏地质、油气藏渗流理论、点源函数、Green函数、保角变换、偏微分方程及计算数学等多学科知识，研究出适合于描述水平井渗流与产能计算的理论与方法，主要取得了以下成果

Disaster of embanks often happen under flood and rainfalls. In order to analyze the influences of water level variation and rainfall on the distribution of seepage and embankment's stability, in this paper, the change of seepage field under the condition of different water level or rainfall is studied based on the saturated-unsaturated seepage theory. And the safety factor of embankment's stability is calculated based on the theory of unsatutated-soil shear stress to search for the action of various factors.

堤防岸坡在洪水及降雨的影响下常常发生险情，为了分析江水位变化和降雨条件下，非饱和土体中渗流场的变化情况及其对抗滑稳定性的影响，本文运用饱和—非饱和渗流理论对不同条件下渗流场变化进行模拟，并从非饱和土抗剪强度理论出发，对抗滑稳定性进行计算，探求各种因素对其的不同影响。

Secondly, the preliminary models of grouting and drainage curtains, and the boundary pre-adjustment method are presented to further perfect the network seepage flow analysis method of rock masses. Then they are applied to the network seepage flow analysis of the Xiaowan high arch dam abutment and rock foundation in various cases.

其次，提出了工程中防渗帷幕和排水孔幕的数值模拟方法，以及岩体网络渗流分析的边界预调整法，进一步完善了工程岩体的渗流分析方法，并将其应用于小湾高拱坝多种工况下的坝肩和坝基岩体网络渗流分析。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了