渗流

ABSTRACT : The fractures are the main percolating c hannels of oil and gas in dense carbonate reservoirs.

摘 要 裂缝是致密碳酸盐岩储集层中油气的主要渗流通道。

The fractures are the main percolating channels of oil and gas in dense carbonate reservoirs.

裂缝是致密碳酸盐岩储集层中油气的主要渗流通道。

The electrical conductivity and percolation thresholds of realigned carbon nanotubes composites have been simulated based on Effective-Medium Theory.

基于有效介质理论(Effective-Medium Theory， EMA)模拟计算了碳纳米管(Carbon Nanotubes， CNTs)定向排列的CNTs复合材料的电导率及其渗流阈值。

4Basing on research findings of indoor experiment, Improved Convert Permeability Coefficients Method considering of crossed karst and cranny was put forward, FEM program KARSTCNPM used to calculate seepage in saturation and non-steady karst was reprogramed.

根据室内试验研究成果，提出了考虑岩溶与裂隙交叉局部水头损失的改进折算渗透系数法，改编了饱和非稳定岩溶渗流场有限元计算程序KARSTCNPM。

In the water vacating condition, the stress change and pore water re-distribution are discussed.

对开挖阶段，考虑了渗流力和开挖扰动的影响；对充水阶段，考虑了浸润面以上毛细作用区内毛细吸力丧失的影响；对排水阶段，考虑了水位骤降引起的应力变化和超孔隙水压力的影响。

Another huge door opened and they came into a laboratory that was a full of whiling lights and colorful fluids boiling and percolating all over the place.

另外，他们到大门口开了一个实验室，whiling灯和五彩缤纷充满液体沸腾、渗流满天飞。

They both have merits and shortcomings. The first one calculates simply, and has corresponding design code to follow about safety factor. But it has many errors because of many assumptions about seepage and deformation of rock abutment. And it is not convenient to optimize the arch dam shape because of dealing with arch dam and abutment separately.

两者各有优缺点：前者计算简单，安全指标有规范可循，但对坝肩岩体渗流和变形性质的假定过多，有一定误差，而且由于将坝身和坝肩分别看待，在作体型优化时很不方便。

seepage ; drainage hole ; air element ; finite element method ; simulation

当以有限元法做渗流场分析时，若考虑排水孔的尺寸效应，以四边形或

Numerical simulation of water injection into coal seam throughlong drill hole and determination of its reasonable parameters

用有限元数值模拟方法求解了煤层注水二维、三维非定常渗流方程，用该数值计算模型结合具体实例，主要分析了工艺参数中注水压力、时间和钻孔间距与湿润范围的动态变化关系，给出了选取合理的注水工艺参数的计算公式。

The concrete dam displacement is studied considering the factors such as foundation modulus increasing with depth, seepage coefficient reducing as depth, seepage coefficient anisotropic, curtain and drainage in the dam heel and seepage field and stress field coupling. Some conclusions are obtained: if the foundation is considered only with the seepage volume load, the dam top horizontal displacement of the reference base point develops upstream. When the foundation size increases, the reference base point's horizontal displacement increases. However, the value measured by the reversed pendulum anchored to the rock foundation is often regarded to be absolute displacement. The above practice is estimated to be limited when the water load on the dam foundation is taken into account.

分析了地基变形模量随深度逐渐增加、渗透系数随深度逐渐减小、坝基渗透系数各向异性、坝踵设置帷幕排水，以及考虑渗流场和应力场耦合等对混凝土坝位移分量的影响，得出如下结论：作用在地基上的水荷载，使混凝土坝坝顶相对参考基点（倒垂锚固点或坝踵正下方1倍坝高处）的水平位移指向上游，而参考基点的水平位移随地基截取范围的增大而增大，由于大坝工程上常将倒垂线锚固在岩基深处，并认为该倒垂线测值为绝对位移。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。