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- principal horizontal stress 主水平应力
- On the base of large numbers of model calculation and plot analysis, found the general rule of borehole shrinkage under the effect of formation dip, maximal principal stress orientation and maximal horizontal stress orientation. 在大量模型计算求解的基础上,得到了地层倾角、最大主应力方向及最大水平主应力方向对倾斜蠕变地层段井眼缩径影响的一般规律。
- principal horizontal compressive stress 水平主压应力
- The present direction of the principle horizontal stress is NWW-SEE in the north of Zhuanghai area, while the direction is NEE-SWW in the south area. 桩海北部地区现今最大水平主应力的方向为北西西-南东东向，桩海南部地区现今最大水平主应力的方向为北东东-南西西向。
- The Poisson's ratio curve is also calculated out based on the curve of minimal horizontal stress which may be obtained by other reliable methods. 同时,利用泊松比与最小水平主应力的相关式,由最小主应力的变化曲线,求出了泊松比的变化曲线。
- The main horizontal stress in eastern China is the pressure near EW direction, but as a whole, the crust is moving east. 在水平方向上，中国东部地壳的主应力方向为近东西向的压应力，但总体上是向东推移的。
- Quantitative relationship between measured permeability of rock core and horizontal stress is studied by regressive analytical technique. 根据岩芯样品渗透率分析值和岩石水平应力，以回归分析技术研究了二者的定量关系。
- Because tectonic stress coefficient from conventional horizontal stress model can hardly be obtained accurately, the corresponding mathematic expression is unable to make. 摘要由于传统水平地应力模型中的构造系数很难准确求取，无法获得计算水平主地应力的数学式。
- The results are as follows, the density of the specimen near implanted surface layer increases with dose, horizontal stress takes effect on surface layer. 结果表明:在注入近表面层,样品密度随剂量而增加;表面受到横向张应力的作用。
- By model testing,the horizontal stress in the mucky layer under overlying arath surface crust is studied in this paper, when the overlying crust is under strip evenly distributed loads. 结果表明，在硬壳层的封闭下，淤泥层内水平应力随条形均布荷载的增加成幂函数的形式增长，且淤泥层内水平应力具有较高的数值，地表荷载在淤泥层内具有较大的影响范围。
- Based on many experiments, this paper discusses the effect of rock modulus of elasticity on fracture shape and operating pressure, presents the testing method of Biot coefficient,and introduces its applications in calculation of horizontal stress. 本文在一系列试验的基础上，描述了岩石弹性模量对压裂裂缝几何形状、施工压力等的影响，并给出了毕奥特系数的试验方法及其在水平应力计算中的应用。
- Furthermore, the horizontal stress direction of the target zone in the gas field is determined by means of borehole breakout data, drilling-induced fracture and DSI Fast shear azimuth. 同时，利用井壁崩落法、钻井诱导缝法和DSI快横波方位法确定了新疆迪那气田目的层的水平主应力方向。
- During course of in situ stress measurement, some problems such as core discing, minification and caving of borehole due to horizontal stress are appeared, and their mechanism is studied. 在现场地应力测量过程中发现了岩芯饼裂、钻孔径缩和钻孔破碎塌孔等现象，分析了这些现象的力学机理。
- The inversion further shows that vertical loading on plate can produce significant affects on horizontal stresses. 反演结果也表明，除了过去公认的东西向挤压作用外，巴西还受到相当明显的南北向构造作用。
- My wages are the principal source of my income. 薪金是我收入的主要来源。
- Stress can be the undoing of so many fine players. 紧张可能是这许多优秀选手失败的原因。
- The principal shareholder ask for a meeting. 主要股东们要求召开会议。
- If the two horizontal stresses are different, the degrees of rock anisotropism under bottom is increased as long as differenc... 双向水平应力不同时，随着差异的增大，井底岩石各向异性程度增大，钻头向最大水平主应力方向的漂移趋势增强。
- The agent spoke on behalf of his principal. 代理人代表他的委托人说话。
- Keys are available on application to the principal. 向校长申请就可得到钥匙。
