查询词典 seepage

Using upwind finite method with the technology of grapy display the artile, solves the leak air seepage and air movement diffusec equation and seepage dissipation equation of oxygen concentration variation process.

结合实例，用迎风有限元方法求解了回采采空区漏风渗流方程和氧气渗流耗散方程，从理论上说明采空区氧浓度分布的不均衡性。

The model is used to count several engineering example.Comparing the 2D numerical results with electrical simulations,it is proved that the seepage model can count the seepage surface and the location of search results in dam well and truly.Comparing 3D results with 2D results at close section,the results are tally well except the difference of meshes and the interceptive position of section.So the model is credible and has upper practicality value.In the projects,the spending of account is increasing because of the bigger account field.

将饱和—非饱和渗流模型用于几个工程实例，其二维模拟结果同渗流电模拟实验结果进行了对比，证明本文的渗流模型完全能够准确计算坝内的渗流浸润线以及逸出面位置；三维数值模拟的结果在相近剖面处与二维结果作了比较，考虑三维网格剖分及剖面截取位置的差异，三维结果与二维结果吻合的较好，证明本文的饱和—非饱和渗流模型在三维计算中是可靠的且具有较高的实用价值。

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。

Especially, it is found that there exists three types of relative permeability of water such as concave, convex to the water saturation ax and the reversed "S" pattern. The super-low permeability reservoir is sensitive to pressure, apparent with millipore undersaturation and water blocks. In this study, a new concept of irriducible undersaturation is brought up. And a new mode to describle the process of imbibition dynamics is used to reveal and confirm the mechanism of pinhole enveloping macropore as following: pendular ring of wetting phase gathers→it fills throat→it truncates nonwejting phase . The expression of pressure distribution and the equation of oil production are deduced under conditions of non-darcy linear seepage and non-linear seepage.

尤其发现水相相对渗透率曲线存在凹向、凸向含水饱和度轴及反S形三种形式；特低渗透储层的压力敏感性强，微孔隙的欠饱和及水锁效应显著，本文研究中提出欠束缚水饱和度的概念，引用一种描述渗吸动态即湿相液环聚集→充填喉道→截断非湿相的演化过程的新方法，更深刻地揭示和证明了&小孔包围大孔&机理；推导出了非达西线性渗流和非线性渗流条件下的压力分布表达式和油井产量方程。

It has important effects for the stability of water conservancy building,the using of groundwater resource,the pollution controlling,the exploitation of rock oil and natural gas.And the needs of projects for those fields are increasing home and abroad.So the research of seepage flow becomes focuse.In this article,a saturated and unsaturated seepage model has been established which includes double variables:piezometric tube waterhead and saturation.

渗流现象是多孔介质中普遍客观存在的运动规律，其对水工建筑物稳定性、地下水资源利用、污染控制、石油天然气开采等工程问题均具有重要的影响，随着国内外在上述领域中工程需求的增加，渗流研究日益成为热点问题。

At many case of bank foundation, such as the case of upper strongness and lower weakness, strong permeable foundation of dyke, strong permeable foundation of dyke containing low penetrability soft intercalation and the dyke foundation by alternation of low and strong penetrability layer, the appropriate condition of various upright seepage prevention measure (whole cut-off wall, half cut-off wall and hanging cut-off wall) and the optimization of seepage prevention measure are analyzed.

从渗流基本理论出发，以压力水头为基本未知量推导多孔介质三维饱和—非饱和、稳定—非稳定渗流问题的微分方程以及方程的有限元格式；在饱和非饱和渗流场的有限元分析中，不仅考虑了饱和区的水体渗流情况，而且也考虑了非饱和区的水分运动情况，将饱和渗流场与非饱和渗流场统一起来进行研究，整个渗流场采用一个支配方程。

A series of measures, such s uniformly arranging grouting holes for consolidation grouting, monitoring stresses of anchor rods, increasing grouting pressure in stages, automatically warning against the upraising of toe slabs, were taken to make the maximum grouting pressure of first section increase to 1.0 MPa and the factor of safety against seepage of shallow curtain bodies exceed 1.90, building a safe and reliable seepage control system for the soft foundation under concrete face rockfill dam's toe slabs.

通过采用均布固结、锚杆应力监测、分级升压、抬动自动报警等一系列措施，使趾板基础帷幕第1段最大灌浆压力达到1.0MPa，浅部幕体抗渗安全系数超过1.90，建构起安全、可靠的面板坝趾板软岩基础防渗体系。

Study on Three-dimension Seepage and Abutment Stability of Jinping High Arch Dam;2. This paper deals with the application of finite element method in the study of seepage field of sluice foundation.

应用有限元法对闸基渗流场进行计算，在计算过程中考虑排水效果和泥沙淤积的影响，得出渗流场的数值解，进而计算静水池的浮托稳定性，最后可确定静水池浮托稳定条件下的安全运用水头。

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。

Secondly, study on bleaching of sandstone based on field characteristics, petrography, geochemistry and compared with other sandstone related, combined with geological setting of gas seepage in the area, reveals that natural gas leakage is responsible for bleaching of the sandstone on top of Yan\'an formation. The bleaching resulted from interaction between the reductive fluid and the rock. At the same time the bleaching suggests that the northeast of basin has experienced large scale gas seepage.

在此基础上，通过漂白砂岩野外露头地质特征、岩石学、地球化学以及相关砂岩的对比研究，结合研究区天然气逸散的地质背景，揭示砂岩漂白现象为上古生界天然气逸散过程中，还原性流体与岩石作用的结果，同时也表明其指示了天然气的大规模逸散作用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。