摘要
///In recent decades,the earth fissure induced by groundwater withdrawal has been studied around the world.In research on numerical simulation of earth fissure,the models have experienced the development from one-dimension to multiply-dimension,from uncoupling to fluid-solid coupling,from elastic to elastic-plastic and visco-elastic-plastic,from qualitative to semi quantitative.Since the complexity of earth fissure formation,current research is far from mature,thus many problems remain unsolved.