煤矿安全2017，Vol.48Issue(12)：176-178,182,4.DOI:10.13347/j.cnki.mkaq.2017.12.047
基于形状指数和面积的不规则煤柱稳定性分析
Stability Analysis of Irregular Coal Pillars Based on Its Shape Index and Area
摘要
Abstract
In order to judge the stability of irregular coal pillar accurately,this paper proposes the idea that the shape index and area of coal pillar are the factors influencing the stability of coal pillar.By means of mathematical statistics and case analysis,the paper suggests that the coal pillar shape is more complex,the safety coefficient is smaller,and the coal pillar area is bigger,the safety coefficient is bigger.There is a quantitative relationship between the safety factor of coal pillar and the shape index and area of coal pillar:in the mining depth of about 150 m,coal thickness of about 2.2 m,mining width of 20 m to 30 m,coal pillar area under 3 000 m2 condition,the safety coefficient of the irregular coal pillar K and its shape index S and area A function relation expression is K=8.799 9S-09+0.056 1ln (A)-1.773 4.The results show that the shape index and area of coal pillar are important factors that affect the stability of coal pillar,they can be used as an important index to calculate the safety factor of irregular coal pillar.关键词
不规则煤柱/安全系数/煤柱稳定性/形状指数/面积Key words
irregular coal pillar/safety coefficient/coal pillar stability/shape index/area分类
矿业与冶金引用本文复制引用
孙庆先..基于形状指数和面积的不规则煤柱稳定性分析[J].煤矿安全,2017,48(12):176-178,182,4.基金项目
国家自然科学基金青年基金资助项目(51404139) （51404139）
国家自然科学基金资助项目(51674142) （51674142）
