将卸载试验与常规三轴加载试验的极限强度、破坏方式等力学参数进行对比，试验结论丰富了卸载岩石力学内容。
Besides, coal mechanical parameters as limit strength and failure style between loading and unloading test have been compared. These conclusions have a plenty for rock mechanics.
粘聚强度C是岩石力学领域极为重要的力学参数，然而其定义却长期不统一。
C is a significant mechanics parameter in rock mechanics field, but its definition is disunion.
通过对两地区部分岩心的测试，得出了岩石泊松比、杨氏弹性模量和抗拉强度等岩石力学参数。
Based on testing of partial cores taken in two areas, some rock mechanical parameters such as Poison's ratio, Young's modulus, tensile strength are determined.
由损伤力学理论与微元强度统计理论，得到了岩石声发射参数与损伤参量的关系。
The relationship between acoustic emission (AE) parameters and damage variable is obtained by applying the damage theory and microelement statistical strength theory.
岩石三轴抗压强度是表征地层抗钻性质的重要参数之一，是PDC钻头优选的基础和主要依据。
The triaxial compressive strength of rock is one of the most important formation parameters of drillability, and is the principal basis of polycrystalline diamond compact(PDC) bits selection.
在石油钻井施工过程中，岩石的抗钻强度主要受井下地层岩石性质的影响，地层孔隙压力则是影响岩石抗钻强度的一个重要参数。
Rock strength is related to drilling parameters and features of formation rock. Formation pore pressure is an important affecting factor on rock strength.
然而，岩石的破坏和断裂是紧密相联的，岩石强度准则的材料参数和断裂理论的断裂韧度存在特定的方程关系。
But the damage and fracture of rock is closely related to each other. And the relationship between strength criterion parameters of rock and fracture toughness of fracture theory is particular.
深井钻井作业量的逐步增加，岩石三轴抗压强度的预测模型将成为衡量地层强度特性的重要参数之一。
With the deeper drilling operation increased gradually, the triaxial compressive strength model will become one of important parameters to measure the formation strength characteristics.
深井钻井作业量的逐步增加，岩石三轴抗压强度的预测模型将成为衡量地层强度特性的重要参数之一。
With the deeper drilling operation increased gradually, the triaxial compressive strength model will become one of important parameters to measure the formation strength characteristics.
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