目前地表移动的预计方法大都是建立在充分采动条件下的,但在实际生产中,有许多是非充分采动。尤其是老矿区,随着矿井开采越来越向深部发展,此时一个回采工作面对地表的采动影响往往为非充分采动。我国采空区的尺寸一般是走向长度较大,在此方向上对地表的采动影响已达充分,而在倾斜方向上长度较小,一般达不到充分采动程度,可算为单向非充分采动。如果采区的两个方向尺寸均达不到充分采动,可称为双向非充分采动。单向非充分采动的地表移动预计,由 At present, most of the prediction methods of surface movement are based on sufficient mining conditions, but many of them are under-exploitation in actual production. Especially in the old mining area, as the mine exploitation progresses deeper and deeper, the mining effect of a mining face on the ground surface is often not fully exploited. The size of the goaf in China is generally larger in the strike direction, and the influence on surface mining in this direction has reached a sufficient level. However, the length in the inclined direction is small and generally can not reach the level of full mining. Full mining. If the mining area in both directions are not up to the full size mining, can be called two-way not fully mining. Unidirectional ground movement is expected to be caused by