Indirect Estimates of Rock Mass Strength by Projectile Penetration Tests, and Other Methods: An Overview and Discussion of Relevance to the Nuclear Test Program

摘要

This study was initiated in response to the following questions: ''what rock mechanical properties, if any, can be back-estimated from projectile penetration tests in rock, in-situ.'', and ''what is the uncertainty in such estimates.'' The questions were posed in the context of the LLNL Nuclear Test Containment Program, to better evaluate in-situ rock mass strength for enhanced predictions of ground motions and containment. This motivation is quite different from the usual concern, in earth penetration studies, which is to improve estimates of loads on penetrating weapons. 240 refs., 31 figs., 4 tabs. (ERA citation 14:006404)