Discussion on the application of boundary theory in determination of instability of mined-out area and damage control 界壳理论在采空区失稳判定与危害控制研究中的应用探讨
The interlacing pastoral-agricultural area is the main distribution and damage region of sandy de-sertified lands and the vital zone of sandy desertification control in China. 农牧交错区是我国沙漠化土地分布和危害的主要地区,是我国沙漠化防治的重点区域。