工程设计学报2017，Vol.24Issue(5)：503-510,8.DOI:10.3785/j.issn.1006-754X.2017.05.003
基于自稳系数法的采空区群"短板"单元空区甄别及实例分析
The screening of "short slab" unit gob of goaf group and the case analysis based on the self-stabilization coefficient method
摘要
Abstract
The self-stabilization coefficient method of the frame structure of the goaf group is put forward, which provides the basis for the prevention and control of goaf instability. By constructing the model of self-stabilization of goaf-group frame structure, the typical displacement equations of the internal structure of goaf group were established. The calculation formulas of the self-stabilization coefficients of the pillar and the column were given based on the theory of rock strength, and the important factors α and β of pillar and column were introduced to identify the "short slab" unit gob. Taking a goaf group consisting of four middle sections of a large-scale metal mine as an example,under two operating conditions of blasting and non-blasting, the reasonableness of the self-stabilization coefficient method was discussed. Results indicated that the self-stabilization coefficient method could effectively identify the "short slab" unit gob of goaf group and reflect the relationship between the distribution of "short slab"unit gob and its location and depth. The reliability of the method is verified by the engineering examples and the displacement monitoring result, and a new and effective way for the screening of "short slab" unit gob of goaf group is provided by the self-stabilization coefficient method of the frame structure.关键词
采矿工程/采空区群/自稳系数法/"短板"单元空区/甄别Key words
mining engineering/goaf group/self-stabilization coefficient method/"short slab" unit gob/screening分类
矿业与冶金引用本文复制引用
姜立春,王国伟,赵奎..基于自稳系数法的采空区群"短板"单元空区甄别及实例分析[J].工程设计学报,2017,24(5):503-510,8.基金项目
国家重点研发计划项目(2016YFC0600802) （2016YFC0600802）
国家自然科学基金资助项目(51174093,51374035) （51174093,51374035）
