The relation between lateral pressure coefficient and vertical effective stress in passive region in front of wall is still given less concern.
粉砂粉土中，基坑被动区土体水平侧压力系数与竖向有效应力关系的研究还鲜有报道。
The model is an effective method, which can be used for pressure drop of oil gas water three phase vertical upwards slug flow in which the continuous liquid phase is water phase.
本模型是计算垂直油-气-水三相弹状流中液相的连续相为水相时的压力降的有效方法。
On the basis of the predicted results and rock mechanical model, the vertical effective pressure is obtained. Pore pressure of formation can be calculated by using the effective pressure principle.
利用预测结果结合岩石力学模型得到垂直有效应力，最后根据有效应力原理计算地层孔隙压力。
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