采空区是地下矿山重大安全隐患源，其稳定性是行业科技工作者关注的焦点。以石英脉型钨矿山采空区稳定性评价作为研究对象，基于未确知测度计算理论，构建了适用于脉型矿床的采空区危险性评价体系及分级标准，并应用于矿山评价实践。结果表明：浅孔留矿法单脉开采空区稳定性普遍优于阶段矿房法脉带开采空区，矿柱的回收极大地加速了空区的失稳破坏；评价结果与矿区实际情况吻合度高，可为矿区采空区处理与残矿回收提供指导意见。基于未确知测度理论的空区稳定性评价为石英脉型钨矿山采空区稳定性评价提供了一种新的途径。

Goaf is a major potential safety hazard of underground mines，and its stability has always been the focus attention of the majority of practitioners.Aiming at the difficulty in analysis and evaluation of the stability of quartz vein type wolframite ore veins and surrounding rocks，and there is no suitable method for analysis and evaluation of the stability of the goaf，the unascertained measurement theory was proposed.Firstly，11 factors affecting the stability of the goaf were selected，which including the mining width and the exposed area of roof，and the impact evaluates was conducted according to the stability classification of the goaf，thus， a single index measure function was constructed for the stability evaluation of quartz vein goaf.Then，the evaluation vector of multiple indexes comprehensive measurement was formed by determining the influence factor weight of each goaf.Finally，the stability evaluation level of each goaf is obtained based on the confidence recognition criterion.The results show that 55 are stable（Ⅰ） among the 191 goaf areas surveyed，82 are generally stable （Ⅱ），25 are less stable （Ⅲ），and 29 are unstable（Ⅳ）.The stability of the single-vein mining goaf of shallow hole retention method is generally better than that of the phase mining goaf，the less stable or unstable goaf is mainly vein zone.The recovery of the pillars greatly accelerates the instability of the goaf.The analysis also shows the mining width and the exposed area are the main factors controlling the stability of the goaf，and for this mining area，the stability limit of the mining width and the exposed area is 16 m and 800 m² respectively.Based on the highly consistent of the evaluation results with the actual situation of the stability of the goaf，it is considered that the evaluation of the stability of the goaf based on the unascertained measurement theory provides a new way for the stability evaluation of the goaf of the quartz vein type tungsten mine.The two quantitative grading standards of mining width and roof exposed area proposed in this paper can be promoted and used in the analysis and evaluation of the stability of the goaf of the same type of mine.

http://www.goldsci.ac.cn/article/2021/1005-2518/1005-2518-2021-29-3-433.shtml