摘要
[目的]探讨运用模糊评判法评价采空区稳定性的可行性及实用价值。[方法]将影响煤矿采空区稳定性因素分为地质因素、采空因素、外部因素及时间因素4大因素,进一步细分为煤层埋藏特征、地质构造特征、覆岩物理力学性质、水文地质特征等8大要素,细化出地层、煤层埋藏深度、松散层厚度等22项因子。将采空区稳定性级别分为:较不稳定、不稳定及极不稳定3个级别,采用模糊评判法,建立煤矿采空区稳定性评价的模糊层次分析模型,构建对比矩阵,并以凤凰山矿凤2采空区为例,对其稳定性进行评价。[结果]研究区稳定性级别属于极不稳定区,与现场调查情况基本相符。[结论]运用模糊评判法进行采空区的稳定性评价具有可行性,可运用到其他类似采空区稳定性评价中指导矿区合理规划和开采,具有实用价值。
[Objective] To analyze the feasibility of fuzzy evaluation method in stability evaluation of mined- out area. [Methods] We divided the driving factors of the stability of mined-out area into four classes： geo- logical factors, mined-out factors, external factors and time factor; divided the secondary factors into eight elements, including buried characteristics of coal seam, tectonic characteristics, physical and mechanical properties of the overlying strata, hydrogeology feature, refine formation, buried depth of coal seams, thick- ness of loose layer, and so on divided the stability of mined-out area into three grades： less stability, insta- bility and extremely instability. We used fuzzy analytic hierarchy process to establish evaluation stability model, and to construct the comparison matrix. We took Fenghuangshan mine area as a case study to evaluate the stability. [Results] The study area was found to be extremely instable, and the result is consistent with the site investigation. [Conclusion] Fuzzy evaluation method is feasible and can be applied to other mined-out areas. It can also provide guides to mine areas for rational planning and mine exploitation, having practical value.
出处
《水土保持通报》
CSCD
2015年第1期176-180,186,共6页
Bulletin of Soil and Water Conservation
关键词
采空区
稳定性评价
模糊评判法
模型
mined-out area
stability evaluation
fuzzy evaluation method
model
