Abstract: The ground subsidence is a common geology hazard in the salt solution mines. The salt solution mine has the characteristics of sudden collapse, large scale and long duration of damages. This paper summarizes typical ground subsidence cases in the last decades. All of the subsidence can be classified into three categories: Collapse caused by the cavity instability; Fault activation induced by the brine and groundwater corroding; Bearing capacity failure in the overlying rock mass due to the erosion damage. Factors that might induce the damage and their interrelationships are discussed and recommendation and suggestions are also proposed for the geological investigation as well as the mine shaft design and construction aspects.

Key words: Salt Mines, Solution Mining, Ground Subsidence, Geological Hazards