一、按地压活动机制处理空区目前我国有色金属矿山约有50％是采用空场法开采的,采后形成了形状不一、容积颇大的空区,在空区(采场)的周围又形成二次应力场,于是在空区上盘下角及下盘上角部位发生应力集中。当空区高度较大时,在上盘会出现拉应力区。因此,当空区规模较大、存在时间较长,而且地质构造发育或岩性较差,则会在暴露较长时间后发生突然 First, press the activity mechanism to deal with the empty area At present, about 50% of China’s non-ferrous metal mines is the use of open-field mining method, after the harvest of the formation of different shapes, large volume of empty space in the empty area (stope) Surrounding the formation of secondary stress field, so in the empty area under the plate angle and the upper corner of the plate stress concentration occurs. When the space height is high, there will be tensile stress zone in the plate. Therefore, when a large area is vacant and exists for a long time, and the geological structure or lithology is poor, it suddenly occurs suddenly after a long period of exposure