New development of geotechnical plastic mechanics-generalized plastic mechanics;

An implicit integration elastic stiffness method has been developed for the finite element analysis of rock and soil elasto plastic models.

Some progresses were presented on the field of rock and soil mechanics for the past few years.

A new and large self-servocontrol test equipment of true triaxial compression used in physical model tests of rock and soil mechanics is introduced in this paper.

Geotechnical engineering and geomechanics in Chinese western zone;

Problems on geomechanics in need of immediate deep research in subway construction;

This paper introduces briefly the development in recent years on the computation techniques of geomechanics and underground structures, and gives a comprehensive survey of the aspects concerned with author s research practice, but not all of the main problems in this field branch are expected to deal with.