模糊综合模型在采空区稳定性评价中的应用

采空区稳定性影响因素众多且相互作用关系复杂,基于模糊数学理论,对采空区稳定性等级进行定量评价。从岩体质量、采场结构特征和工程环境等3方面入手,将采空区稳定性影响因素细分为3大类共13个指标,构建采空区稳定性评价指标体系。通过构建指标因素集、权重集和评价集,建立采空区稳定性模糊综合评价模型。以某地下开采金矿为对象,应用模糊综合模型对其-200 m中段采空区稳定性分级。对象采空区中有5个被划分为Ⅲ级(中等稳定),1个为Ⅳ级(不稳定)。评价结果与现场实际情况相符,验证了模糊综合评价模型的有效性。

Application of fuzzy synthesis model in goaf safety evaluation

Goaf stability is influenced by many factors and the interaction is complex. Based on fuzzy mathematics theory,quantitative evaluation of goaf stability is conducted. The influencing factors of goaf stability are divided into 13 indexes from 3 aspects ( rock mass quality,structure characteristics,engineering environment) ,so the stability evalua-tion index system is built. By constructing factor/weight/evaluation set,the fuzzy comprehensive evaluation model of goaf stability is established. The paper takes an underground gold mine as the research subject,in which the goaf sta-bility on the -200 m level is classified by fuzzy synthesis model. 5 goafs are classified as degree III ( moderately sta-ble),one as degree IV (unstable). The evaluation result is consistent with actual situation,which proves the validity of fuzzy comprehensive evaluation model.