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基于物元理论和关联函数,将可拓理论引入采空区危险性辨识中。由于影响采空区稳定性因素的复杂性与多样性,从实际工程角度选取能够综合反映采空区特性的指标进行评价。以某矿采空区为例,根据物元和可拓集合中的关联函数建立采空区危险性辨识的可拓模型,并对采空区危险性进行预测。结果表明,10-10采空区危险性等级在Ⅲ级、Ⅳ级之间,由危险性极高偏向危险性较高;而10-12采空区危险性由Ⅱ级偏向Ⅰ级,稳定性较好,危险度较低。本文评价结果符合实际情况,表明采用可拓理论评价采空区危险性可行。此外,采用改进的AHP法求解指标权重可以避免实际工程中人为主观因素的影响,从而使权重的计算更加客观。
Based on matter element theory and correlation function, extension theory is introduced into the hazard identification of goaf. Due to the complexity and diversity of the factors affecting the stability of the goaf, the index which can comprehensively reflect the characteristics of the goaf is selected from the perspective of practical engineering. Taking the mined-out area of a mine as an example, an extension model of mined-out area hazard identification is established according to the correlation function in the ming yuan and the extension set, and the danger of the mined-out area is predicted. The results showed that the danger levels of 10-10 goafs were higher than those of Grade Ⅲ and Ⅳ, and the risk from 10 to 12 was higher than that of Grade Ⅱ, Better, less dangerous. The results of this paper are in line with the actual situation, indicating that extension theory is feasible to evaluate the danger of goaf. In addition, using the improved AHP method to solve the index weight can avoid the influence of the subjective factors in the actual project, so that the calculation of the weight is more objective.