The multi-point fracturing of oil well vertical to the orientation of the maximum principal stress can improve development effectiveness of the ultra-low permeab.
采用交错井网,用直井注水的方法,在油井水平段垂直于最大主应力方向进行多点有效压裂,能有效地提高特低渗透油藏开发效果。
The soil cutting experiment indicates that the interior friction angle and the shear intensity of soil is reduced;and the maximum principal stress is decreased due to the vibration load;it induces the decrease of digging resistance.
从理论上研究了振动掘削岩土的减阻机理,土壤剪切试验结果表明,振动载荷能够使土壤的内摩擦角变小、抗剪强度下降、最大主应力值减小,从而导致挖掘阻力降低;对土壤在静态载荷和振动载荷作用下的失效过程进行了对比仿真实验研究,可知土壤在振动加载的条件下强度显著下降,并提前于相同条件的静态加载而破坏,同时跟踪X方向的载荷发现,振动掘削最大掘削阻力可降低50%。
Because there was dissension in the maximum principal stress orientation obtained by in-situ stress measurements by different results measurements,the principal stress axis was determined by conjugate joints,fault occurrence,rake angle and shift symbol of fault slip.
针对地应力场测量给出的区域最大主应力方向常常有争执,且不同的测量方法结果也不同。
This paper proposes two identification methods of maximal principal stress and its orientation by analysing the stress formula of bevelface.
通过对平面应力状态下斜面上正应力公式的分析 ,提出了最大主应力方位的两种判定方
The critical J integral and the maximal principal stress under joint intensity theory was used as the criteria of crack starting of con-rod,the stress,plastic strain and displacement field were analyzed,and the distribution of crack starting points were displa.
对连杆准静态裂解进行了数值模拟分析,对裂纹区网格划分、接触与约束处理、无应力投影功能与自适应加载步长等关键技术进行了探讨;运用临界J积分和最大主应力准则作为连杆启裂的判据,分析了启裂时连杆应力场、塑性场及位移场,给出启裂点的分布状况。
Based on the stresses calculated, the maximal principal stress was taken as the control criterion of the effects of H/B and the distance between bridle rods on the stress of cross section of aqueducts, and the relationship between the aqueduct stress and the rod distance was derived.
利用有限元法详细计算了不同H/B下无拉杆和不同拉杆间距简支梁式矩形渡槽槽身的应力,根据计算应力,以最大主应力作为控制标准,分析了H/B以及拉杆间距对槽身横截面应力的影响,提出了渡槽槽身应力与拉杆间距之间的关系。
The result shows that for over 95% stations the most prominent change recorded is in the survey line perpendicular or nearly perpendicular to the maximum compressional stress orientation of the focal mechanism solution while the smallest change is in or close to the orientation.
研究了27个强地震附近41个地电台的视电阻率变化,在震前1年尺度~短临阶段,在超过95%的台站上与震源机制解最大主压应力方位正交(或近于正交)测道的视电阻率变化最显著,主应力方位(或近于该方位)的测道的变化反之,其物理机理比较清晰。
Shortcut of Determining the Direction of the Largest Main Stress under the Status of Plane Stress;
平面应力状态下判定最大主应力方向的捷径
Intuitive Judgment of Maximum Principal Stress′s Direction of Plane Stree Statements;
平面应力状态最大主应力方向的直观判定
Thus the directions that emerge for extremizing the normal stress are the directions corresponding to the principal stresses.
因此，产生最大正应力的方向就是相应于主应力的方向。
The Mohr-Coulomb model is based on plotting Mohr's circle for states of stress at failure in the plane of the maximum and minimum principal stresses.
莫尔－库仑模式基于莫尔圆来判断最大和最小主应力平面上的破坏应力状态。
You had need to do your best.
你应当尽最大的努力。
angle for maximum righting lever
最大复原力臂对应角
maximum shear stress yield criterion
最大剪切应力屈服条件
With the loss of the alveolar height, the maximum equivalent stress and the principle stress of the upper central incisor periodontium increased.
结果：随着牙槽骨高度的降低，上中切牙牙周膜最大等效应力和主应力逐渐增大。
The maximum stress of the framework occurred at the node of undersurface of the main hydraulic cylinder mounting boss.
机架最大应力值发生在主油缸安装凸台下表面的节点上。
Estimation of maximum horizontal principal stress magnitude from stress-induced well bore breakouts in the Cajon pass scientific research borehole
利用卡洪山口科学研究钻孔中应力引起的钻孔崩落估计最大水平主应力值
Therefore, when the mainshock occurs the final stress on the focal fault is higher than the dynamic frictional stress, corresponding to that the fault is abruptly locked.
因此,主震发生时,最终应力大于动摩擦应力,与断层突然锁住的模式相符;
At that time the landlord was all in all that village.
在那时，地主在村里的权力是最大的。
The greatest stress is found at the location on the cross section where V is the largest.
最大应力出现在横截面上v为最大的地方。
Draw the element for maximum shear stress and mark values of all stresses.
画出最大剪应力的单元体并标出全部应力值。
We should do our best to help her.
我们应该尽最大努力帮助她。
He is not to blame for he has done his best/utmost.
他已经尽了最大努力，不应当责备他。
Liberalism should be found not striving to spread bureaucracy but striving to set bounds to it.
自由开放主义不应该奋力扩大官僚主义，而是应对它加以大力限制。
This figure was perhaps the average march of the main forces.
这个数字大约是主力部队的最低行军长度。