DEVELOPING LI SIGUANG'S “SAFETY ISLAND” THOUGHT AND MAKING SERIOUS EVALUATION AND RESEARCH ON REGIONAL CRUSTAL STABILITY IN AREAS OF ENGINEERING WORKS

In order to develop Li Siguang's academic thoughts,this paper reviews the creation process of Li Siguang's "safety island" thought,briefly introduces the development process of the thought from "safety islands and stable masses" to "regional crustal stability" and summarizes the main factors and methods for regional crustal stability evaluation.Finally the paper present several major problems for strengthening and developing his "safety island" thought.Great attention should be paid to these problems,so the study of this field may become more mature.