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发明授权
CN107941619B 一种应用于测量岩石有效应力系数的方法 有权

一种应用于测量岩石有效应力系数的方法
摘要：
本发明提供一种应用于测量岩石有效应力系数的方法，属于测量技术领域。所述方法包括:对目标样品进行排水加载，使目标样品处于静水压力状态；对目标样品进行压力加载，依据所获得目标样品的轴向变形量、目标样品的横向变形量、目标样品的直径和目标样品的高度，来获得目标样品的体积应变量；获得目标样品的静水压力；依据静水压力和体积应变量，获得目标样品的体积压缩模量；对目标样品进行孔隙力加载，获得进行孔隙力加载之后的体积应变量；依据进行孔隙力加载之后的体积应变量，获得目标样品的耦合参数；依据体积压缩模量和耦合参数，获得有效应力系数。本发明达到提高有效应力系数的计算精度，简化了实验操作步骤的技术效果。
摘要（英）：

The invention provides a method for measuring an effective stress coefficient of a rock, which belongs to the technical field of measurement. The method comprises the following steps: performing drained loading on a target sample so that the target sample is in a hydrostatic pressure state; performing pressure loading on the target sample, obtaining volume dependent variable of the target sample according to the obtained axial direction deflection of the target sample, a lateral deformation amount of the target sample, a diameter and a height of the target sample; obtaining the hydrostatic pressure of the target sample, obtaining the compressive bulk module of the target sample according to the hydrostatic pressure and the volume dependent variable; performing aperture force loading on thetarget sample to obtain the volume dependent variable after the aperture force loading; according to the volume dependent variable after the aperture force loading to obtain a coupling parameter of the target sample; and obtaining the effective stress coefficient according to the compressive bulk module and the coupling parameter. The method can increase the calculating precision of the effectivestress coefficient and simplify the experiment operation step.

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