摘要
为了对采空区的稳定性进行更直观、有效的评价,将采空区稳定性的影响因素分为水文地质因素、环境因素、采空区几何参数3个方面、14个类别,利用变权欧式距离模型,结合不同指标在同等条件下对评价对象的影响程度,以动态权重体现相同指标在不同取值下对采空区稳定性的影响,确定标准化的采空区稳定性评价指标体系;以采空区稳定性等级Ⅰ级的下限值作为稳定性的"原点",确定各采空区稳定性的欧氏距离作为评价采空区稳定性等级的标准;以满意点关系度为指标,评价各采空区在同一等级内的稳定性情况。应用上述模型对8组金属矿山采空区进行分析,对比判别结果和实际情况,验证了变权欧氏距离关系度在采空区稳定性评价中的有效性和合理性。
In order to evaluate the stability of underground goaf more effectively and intuitively,the factors affecting the stability of underground goaf are divided into three aspects and 14 categories,including gob geometric parameters,hydrogeological and environmental factors. Based on euclidean distance model with variable weights,combined with the effect extent of the different indexes on the evaluation objects under the same conditions and with dynamic weights reflecting the effect of the same indexes on the stability of underground goaf with different values,the evaluation index system of the stability of underground goaf is standardized; The lower limit value for level I of the stability of underground goaf grades is taken as the‘coordinate origin＇of the stability. Euclidean distance of the stability of underground goaf serves as evaluation criteria; With the relation degrees of the satisfactory point being an index,The stability of each underground goaf is evaluated in the same level. This model is applied to an analysis of eight sets of data obtained in the metal mine goaf. Compared with the practical evaluation results,the relation degree in euclidean distance model with varying weights is effective and rational in the evaluation of the stability of underground goaf.
出处
《中国地质灾害与防治学报》
CSCD
2015年第3期95-100,共6页
The Chinese Journal of Geological Hazard and Control
基金
国家自然科学基金资助(51274250)
国家"十二五"科技支撑计划项目(2012BAK09B02-05)
关键词
变权欧式距离
满意点
关系度
采空区
稳定性评价
euclidean distance with variable weights
satisfactory point
relation degree
underground goaf
stability evaluation
