摘要
针对大同矿区房柱式开采坚硬顶板大面积冒落的特征和冒落机理,考虑到煤柱规格尺寸和分布间距的无规律性以及煤柱个体之间强度的差异性等带来的煤柱支承状况的随机、非均和不确定性,引入模糊集理论研究了非均因素对煤柱群体支承能力弱化过程、失效系数的影响。给出了表征煤柱个体间支承状况非均性的隶属函数和支承煤柱模糊失效系数的条件隶属函数关系式,并讨论了隶属函数的取值原则。
In the past, many large area falling accidents of hard roof occurred in room -and -pillar mining in Datong Coal Mine. According to the characteristics and mechanisms of the roof collapse, considering randomness, heterogeneity and uncertainty of supporting conditions due to the size differences and irregular distribution of pillars as well as the strength difference between pillars, the authors applied fuzzy set theory to study the influences of the nonhomogeneous factors on the lowering process of supporting capacity of pillar - roof system and its failure coefficient. The membership function which represents the nonhomogeneity of supporting conditions between pillars as well as the conditional membership equation for fuzzy failure coefficients of coal - pillar system were presented. At last, the principles how to choose the membership function was discussed.
出处
《矿业研究与开发》
CAS
北大核心
2008年第1期8-9,12,共3页
Mining Research and Development
基金
教育部高等学校博士学科点专项科研基金(20040008025)
关键词
煤柱系统
顶板冒落
非均匀性
隶属函数
模糊集
理论
Coal- pillar system, Roof falling, Nonhomogeneity, Membership function, Fuzzy set theory
