渗压力

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。

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 FEM has been used to analyze the coupling seepage field and stress field under different water pressures based on the drainage tunnel project crossing the Yangtze River at the downtown of Chongqing city. The segment's stress distribution, displacements and pore pressure distributions are calculated.

结合重庆主排水过江盾构隧道的修建，针对不同水压情况下的盾构隧道，采用有限元法对围岩及结构的渗流场和应力场进行耦合分析，获得施工期管片应力、位移及孔隙水压力分布。

Thirdly, extracting sediment from the riverbed can dredge the channel and reduce the sediment to some extent.

黄河下游堤防曾经采用过放淤固堤、后戗、前戗、压力灌浆，以及截渗墙等加固措施。

The research results show as follows: if the gas pressure is fixed, the seepage velocity of briquets drops at first and rises later with increasing axial stress, and increases after peak stress.

研究结果表明：恒定瓦斯压力时，在某一围压下，峰前渗流速度随轴向应力先减小后缓慢增大，到达峰值应力后，随轴向应力的减小而增大。

Calculation and analysis the effects of primary flow parameters and structure parameters such as fliter volocity of flow,diameter of ceramic particle,void fraction of ceramic,section shape of ceramic filter element on filter efficiency and pressure drop of regid candle ceramic filter element in this paper.

计算和分析了渗流流速以及陶瓷颗粒直径、孔隙率、陶瓷过滤元件截面形状等主要流动参数与结构参数对于刚性烛状陶瓷过滤器过滤效率和过滤流动的压力降等特性的影响。

Archie's electrical parameters of complex pore texture in sandstone reservoir.;2. Based on methods of core analyses,petrographic images,capillary pressure curves and T2 relaxation time curves of nuclear magnetic resonance,the microscopic characteristics of pore texture and evaluation for the Fu-Yang oil reservoirs are comprehensively studied.

根据岩心、岩石图像、毛细管压力曲线分析和核磁共振测量T2弛豫时间曲线等方法，对三肇地区白垩系泉头组扶、杨油层低渗透储集层的孔隙结构进行评价及综合研究，讨论3个问题：(1)储层中孔隙度和渗透率的关系；(2)孔隙结构的微观特征及其对渗透率的影响；(3)储层的渗滤能力、可动流体饱和度及储层评价。

During the fracturing for low pressure and low permeability gas reservoirs, there are some main problems in conventional hydroxypropylguar - organic boron cross-linking system: Firstly, the water-lock damage to low pressure and low permeability gas formations by filter liquor; Secondly, the reason for alkali-sensitive damage in alkali-sensitive reservoirs is that conventional hydroxypropylguar - organic boron cross-linking fracturing fluids were cross-linked under alkaline environment, while the permeability of reservoirs is reduced greatly; Thirdly, the formation pressure is low, and the energy of flow back is not enough, at present, the main measure in oil fields is "injecting with liquid nitrogen", but this technique increased the cost of fracturing, making great troubles in operating, and leaving the liquid nitrogen also is a big problem.

在低压低渗透气藏的压裂改造过程中，常规羟丙基胍胶-有机硼交联压裂液体系存在的主要问题，一是压裂液滤液对低压低渗透气层造成的水锁损害；二是常规羟丙基胍胶-有机硼压裂液是在碱性条件下交联的，对碱敏性储层造成碱敏损害，降低储层渗流能力；三是地层压力低，压裂液返排能量不足，当前各油田采取的措施主要是&液氮伴注&技术，但是&液氮伴注&技术增加了压裂的费用，而且液氮存放也存在较大问题。

Currently has 500 tons of rubber bearing shear pressure, building energy-saving insulation testing equipment, steel hinge line Anchorage testing equipment, pile-testing equipment, construction of three windows of the testing machine, computer-controlled plastic pipe presses, universal test machine, pressure Testing machine, concrete impermeability test machine, soil testing, inspection and other domestic asphalt advanced testing equipment, various types of 128 sets of equipment, equipment net 2.802 million yuan.

目前拥有500吨橡胶支座压剪机、建筑节能保温检测设备、钢铰线锚具检测设备、基桩检测设备、建筑外窗三性试验机、电脑控制塑料管材压力机、万能试验机、压力试验机、混凝土抗渗试验机、土工检验、沥青检验等国内先进检测设备，各类仪器设备128 台套，设备净值280.2万元。

The calculation results show that the influxes are in the shape of U,and the pressure is lowered gradually.

计算结果表明，水平井渗流量表现为两端高、中间低的特征，水平井内压力分布趋于下降的特征。

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。