本文从现象到机理论述了湖南花垣锰矿１９９４年两次大规模灾难性地压活动的原因与规律，指出了常见的地质构造、地层原岩应力、地下水作用、膨胀性等不是导致该矿地压活动的决定性因素，开采空间布置、回采顺序、工艺、采场结构要素、开采方式等对于环境地层应力的不适应性促成了大规模地压破坏，危及矿山生存．阐明了针对性开采措施与空区处理决策 This paper discusses the causes and rules of two large-scale disastrous ground pressure activities in Hunan Huayuan manganese deposit in 1994 from phenomenon to mechanism, and points out that common geologic structures, original rock stress of ground strata, groundwater effect and expansibility are not the cause of the underground pressure The decisive factors of activities, the layout of mining space, the order of mining, the process, the structural elements of mining stope, the mining methods and other non-adaptability to the stress of environmental stratum contributed to the large-scale ground pressure destruction and endanger the survival of mines. Clarified the targeted mining measures and empty area decision-making process