关键词: 采空区风险, 三维风险模型, 风险评价体系, 风险量

Abstract: The investigation on the existing risk assessment methods showed that two-dimensional risk assessment model was one-sided and inadequate. On the basis of introducing the importance of risk factors of gob into the research, a three dimensional risk assessment model for god is proposed. A risk evaluation system is built for mined-out area of a Manganese Mine in Yunnan, and the quantitative evaluation on likelihood of risk in gob, risk seriousness, of the consequences and the importance of risk factors of for to calculate out the risk of risks will be determined by the scoring method from experts. Then the evaluation is classified to get an unacceptable impact of risk factors on the mined-out area.

Key words: Gob risk, Three-dimensional risk model, Risk assessment system, Risk volume