Process simulation and control of geologic hazards

Traditionally, the evaluation of slope stability and its geologic hazards i s mainly based on the strength theories, such as the limit equilibrium theo ry and Lanking's or Columbu's soil mechanics theory, from which there is a general precept for the design of various kinds of slope supporting, retain ing and reinforcements schemes in engineering circles. But the researches c onducted during last 20 years show that the slope stability is characterize d by its deformation features, and is difficult to be fully described by st rength theory. That is, the slope instability and the occurrence of geologi c hazards are a time-dependent process, and the interaction of supporting o r retaining structures with rock and soil masses depends on complicated def ormation features of rock and soil, not simply the hypothesis of static mec hanics as made in traditional theory. A new theory, process simulation and control, is introduced based on deformation and interaction theories of slo pe stability evaluation and for the hazards prevention. Although it needs t o be modified to perfection, its usefulness in practical engineering has be en proved.