裂缝的

By a good number of experiments, the dynamic law of natural water imbibition injection and pressure-pulse water imbibition injection for Da'anzai low permeability fracturing reservior were obtained, which can provide theoretical and.

渗吸注水是低渗透裂缝性油藏注水开采的重要机理，合理的注水方式与注水参数对改善低渗透裂缝性油藏水驱开发效果具有指导意义。

The physical experiment on hydraulic fracturing propagation in laboratory showed that the penetration of hydraulic fracture into the salutatory barrier mainly depended on the normal stress difference between salutatory barrier and pay zone.

室内物理模拟实验研究发现，突变体法向应力对水力裂缝能否穿过突变体起着决定性作用，约4MPa的法向应力差可以促使水力裂缝穿透突变体，继续沿原来的方向延伸。

On the basis of this, from the view of material selection, mixture grade, cement dose, the usage of additive and maintenance management, some measures are put forward for preventing cement-stabilized subbase from shrinking cracking, and the targets of reducing the crack odds of subbase and the crack widths, or staying subbase from cracking are obtained.

在此基础上，从材料选择、混合料级配、水泥剂量、外加剂的使用、养护管理等角度提出水泥稳定粒料基层收缩裂缝防治措施，达到减少基层收缩开裂几率、减少裂缝宽度或延缓基层开裂的目的。

The major storage space and fluid channel of Ordovician reservoir is hypogenous fracture-cavern.

奥陶系储层流体的存储空间和流动通道主要是次生溶洞和裂缝，这些裂缝往往经过溶蚀改造，故可以形成很高的产能。

Comparing with former prediction methods, there are two progresses in it. First, the concept of fracture richness index is advanced and thus extend of fractures richness can be numerable.

与以前的预测方法相比，本次论文在以下两个方面有了改进：第一，提出了裂缝发育指标的概念，从而能够对裂缝发育程度进行量化。

Dissolved pores, fractures and dissolved caves which is formed by dissolved pores more dissolution and treated as overlarge dissolved pores act primary storing and permeating space in the fractured and dissolved porous carbonate reservoir in the Northeastern of Sichuan Basin. Consequently, it forms unique reservoir types.

川东北裂缝－溶孔型碳酸盐岩储层是以溶孔、溶洞（溶孔进一步溶蚀扩大形成溶洞，可视为超大溶孔）、裂缝作为主要的储集渗透空间，从而形成了该区独特的储层类型。

Because the gas and water in the frature systems encountered by the wells drilled in Shengongshan structure can be correctly divided by these methods,it is possible to identify the property of the fluid in the undrilled fracture systems by the same methods.

由于应用该方法能够将沈公山构造上已知井所钻遇裂缝系统中的气、水进行正确区分，因此有可能利用该方法对未钻遇裂缝系统中的流体性质作出判断。

Due to the advantages on simulating the occurrence and propagation of cracks in concrete, as well as the prediction of crack width, the Rigid Body Spring Model destines to become a prospective numerical method on the structural design and durability analysis.

基于在模拟混凝土内部裂缝发生、扩展以及计算裂缝宽度上的优势，刚体弹簧元法成为一种非常具有发展前景的数值分析方法。

As an example, the series model has been applied to the prediction of short-term fissure deformation of dangerous rock C1 in Zhong-Wu gas-delivering pipeline based on the in-situ data, and it not only can reflect the tide of historical fissure development, but also considers the influence of the stochastic fluctuation on deformation prediction.

经忠武管道张家沟C1危岩裂缝变形实例验证，该串联模型既充分发挥了RBF模型反映裂缝历史发展趋势的特点，又考虑了Markov模型反映随机波动性对变形预测的影响。

And the effect of water pressure on concrete crack width is mainly studied; concrete crack width of penstocks in Three Gorges Hydropower Station is predicted in the end.

并重点研究了水头的变化对压力管道混凝土最大裂缝宽度的影响，最后对三峡电站压力管道混凝土结构裂缝进行了预测。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。