闭合应力测量的错误会对净压估计,以及随后的断裂几何形状的估计造成严重的错误。
An error in closure stress measurement can lead to a significant error in the estimation of the net pressure and, consequently, the fracture geometry.
较高的疲劳性能与裂纹尖端闭合应力、断口表面粗糙度以及裂纹扩展路径弯折程度有关。
The high fatigue properties were found to be related with higher crack closure stress, rough fracture surface and tortuousity of crack path.
酸液在裂缝壁面上进一步刻蚀形成较深的沟槽,即使在高的闭合应力条件下,酸蚀裂缝也能保持较高的导流能力,从而改善酸压效果。
Moreover, the acid will further etch the fracture face and create deeper channels which leads to high fracture conductivity and better treatment effect even under high closure stress.
在分析试验结果的基础上,提出了确定裂缝闭合弯矩(或应力)的力学模型和计算公式。
Based on the test results, the calculation model and the method for predicting crack closing moments (or stresses) are presented.
讨论了在压应力作用下的裂隙闭合效应。
Under a compressive stress state, the closure effect of joints is considered.
过载效应是裂尖钝化、裂尖附近残余压应力和裂尖尾部塑性诱导闭合等共同作用的结果。
The overload effects were controlled by various factors such as crack blunting, residual compressive stress ahead of the crack tip and crack closure induced by wake zone plasticity.
残余压应力使缺口处裂纹闭合力增大甚至可出现非扩展裂纹。
Compressive residual stress increases the crack closure effect at the notch and may lead to a non-propagating crack.
对于应力敏感性强的储集层,过低的井底压力降低了近井地带地层的孔隙流体压力,导致裂缝趋于闭合。同时,井壁失稳的可能性也大。
To strong stress sensitivity formation, low BHP reduces pore fluid pressure of near wellbore are which results in the closure of formation fracture.
在焊接试件中有显著的裂纹闭合现象,其原因是焊接残余应力的作用。
There is significant closure in welded specimen due to the effect of welding residual stress.
生长断层成长初期具有独特的断面形态,断层两盘在错动过程之中会产生空隙带和闭合带两种应力状态。
Growth faults have special fault plane form in their initial phase during which the displacement of the two blocks creates two kinds of stress states pore belt and sealing belt.
水力压裂后,当微裂缝闭合时初始损伤带的诱导应力导致围岩应力重新分布。
The induced stress of initial damage zone results in the redistribution of surrounding rock stress when the micro-crack closes after hydraulic fracture.
疲劳裂纹在残余压应力场中的扩展可借助于裂纹闭合力来描述。
Fatigue crack propagation in a compressive residual stress field can be characterized with the closure effect.
残余压应力使缺口处裂纹闭合力增大甚至可出现非扩展裂纹。
Compressive residual stress increases the crack closure effect at the notch and may lead to a non-pr...
条件表明应力状态影响空洞的闭合方式,三向压应力是修复空洞缺陷的最佳应力状态。
It indicates that stress state affects the close ways of voids and three-dimensional compressive stress state is the best one for healing the internal voids of object.
针对裂缝性储层所特有的变形特征,对裂缝性储层的应力敏感性及裂缝的闭合机理和规律进行了详细的研究。
Contrapose the fracture reservoirs' peculiar deformation characteristics, fracture's stress sensitivity, closure mechanism and closure law have been detail studied.
研究结果表明,采用高强度材料的预应力混凝土靠船桩具有良好的变形能力和裂缝闭合性能。
Test results showed that the PCBP with high strength material had good deformation ability, and that cracks could close when unloaded.
探讨了压剪闭合共线双裂纹之间奇异应力场的相互作用。
Futhermore, the interaction of the singular stress field between, two initially closed collinear cracks is also studied by photoelasticity.
盐岩在应力作用下发生蠕变导致井眼闭合,常引起钻具卡钻事故。
Salt rock can make borehole close in the effect of creep, which often leads to stuck.
在地应力的作用下,煤储层渗透率急剧下降,裂缝逐渐趋于闭合。
Under the effect of geostress, the coal-seam permeability decreases sharply and the fissure gradually tends closed.
在排除焊接残余应力导致的裂纹闭合效应后,焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Having excluded the effect of welding residual tresses on crack closure, fatigue crack growth rates of the welded join...
在排除焊接残余应力导致的裂纹闭合效应后,焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Moreover, the fatigue crack growth rates of the weld metal and heat affected zone are lower than those of the base metal. Having excluded the effect of welding residual tress...
在排除焊接残余应力导致的裂纹闭合效应后,焊缝及热影响区疲劳裂纹扩展速率与基材相当。
Moreover, the fatigue crack growth rates of the weld metal and heat affected zone are lower than those of the base metal. Having excluded the effect of welding residual tress...
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