STUDY ON DETERMINATION OF ROCK MASS QUALITY PARAMETER M, S VALUE AND IMPACT OF IT TO ROCK MASS STRENGTH

摘要

Based on the research works of the predecessors the author firstly induced and sum up some methods of determining rock mass quality parameter m, s value. And the author had the study on impact of the rock mass quality parameter m, s value to rock mass strength, while it combining with the high slope rock mass of Three Gorges Project permanent navigation lock of Yangtse River. Then got the change patterns about not only m, s value to Hoek-Brown strength envelope curve, but also m, s value to instantaneous internal friction angle