摘要
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。
The present paper is to report the authors＇ study on the application of extension evaluation approach to the goal hazard identification. As is known to all, goal is a major hazard of mine, and the goaf safety is always the key point to the safety of production in most mines. It is just for this reason, great stress has been given to the study of the ways on how to better identify the goaf stability so as to be able to control and avoid the likely hazards. Since the goaf is composed of a whole grey system involving a lot of factors, such as geological, hydrological, engineering, environmental and other factors alike, most of which are characteristic of uncertainty and fuzzy, it remains a hard nut to work out a right method for the goaf hazard identification. To solve the problem, we have resorted to the extenics, a new theory to solve the problem of incompatibility. For our purpose, on the basis of the matter-element modeling and dependent function, we have applied the theory to evaluating the stability of the goaf. In view of the variety and complexity of the factors influencing the stability of goat＇, we have also taken the factors reflecting the general character of goal into account. Taking a goal of some mine for our case study spot, we have established an extension model by applying the correlated functions of matter elements and extension sets. We have also gained our expected results, which show that 10 - 10 goaf is extremely unstable with its stability grade just being between Ⅲ and Ⅳ. Whereas the stability of 10 12 goaf is better than 10 - 10 goaf, its hazard grade is only between Ⅰ and Ⅱ . The evaluation results and the actual situation come into quite high conformity, which indicates that the extension theory is rational and feasible for the purpose. Furthermore, the factors weight has been determined by using the improved AHP method obtained based on the simple dependent function. Thus, it can be said that our improved method helps to avoid the bias of subjective factor evaluation in pract
出处
《安全与环境学报》
CAS
CSCD
北大核心
2009年第2期169-172,共4页
Journal of Safety and Environment
基金
云南省教育厅科学研究基金资助项目(07C40062)
云南省科技厅科技创新工程计划项目(2008KA001)
关键词
采矿工程
采空区
危险性辨识
可拓理论
权重
mining engineering
goaf
hazard identification
extension theory
weight
