Abstract: In the 21 century, many higher-speed, larger-scale, deeper buried rock engineering constructions are developed with the development of national economy in China. Therefore, there are two new challenging issues for the researchers of engineering geology. Whether do the rock structures still control the behavior of the rock mass when the engineering construction is buried 2500m below ground surface? an example is the water convey tunnel in Jinpin II power station. How do we predict the long-term stability of important rock engineering constructions? This paper examines and discusses the two issues. Some useful data are provided for the designer and researcher of deep rock underground engineering as references.