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本文采用以铅为围压介质的三轴实验装置,在围压高达7.5千巴(750兆帕)的范围内测定了我国不同产地的石英岩、花岗岩、花岗闪长岩、辉长岩、玄武岩大理岩的应力-应变曲线,建立了抗压强度和剩余抗压强度同围压的关系式,并就采用单轴压缩强度推测岩石在高围压下抗压强度的可能性、固体围压介质条件下岩石摩擦常量S_o值偏大的现象、以及岩石脆、廷性转变的标志等问题进行了讨论。
In this paper, a three-axis experimental device using lead as the confining pressure medium was used to measure quartzite, granite, granodiorite, gabbro, and other materials from different regions of China within a confining pressure of 7.5 kilobars (750 megapascals). The stress-strain curve of basalt marble has established the relationship between compressive strength and residual compressive strength as well as confining pressure, and the possibility of compressive strength of rock under high confining pressure and the confining pressure of confining pressure using uniaxial compressive strength. The phenomenon of large S_o value of rock friction constant under medium conditions, as well as the sign of rock brittleness, and typability transition are discussed.