Abstract: Based on the integration process of strata “collapse - breaking - bending - subsidence”, the strata failure and movement were analyzed. Considering the difference of the fracture development and the strata movement, the fracture zone is divided into quasi-continuous zone and block articulated zone. Thus, the four zone division of “caved zone, block articulated zone, quasi-continuous zone and continu- ous deformation zone” is set up, and the division criterion of the four zones is put forward by using hinge condition of strata structure, coefficient of rock mass stability and fractal dimension of strata fracture.

Key words: strata and surface movement, four zones division, fracture zone, block articulated zone, quasi-continuous zone