采矿与安全工程学报2016，Vol.33Issue(3)：481-485,508,6.DOI:10.13545/j.cnki.jmse.2016.03.016
沿空掘巷小煤柱变形分析与中性面稳定性控制技术
Deformation analysis and neutral plane stability control technology of small coal pillar with gob-side entry
摘要
Abstract
According to the abutment pressure distribution of stope lateral coal under the condition of small coal pillar with gob-side entry, some neutral plane areas where the deformation of coal is small in coal pillar have been studied through numerical calculation and in-situ measurements. As the size of coal pillar increases, the width of neutral plane area increases. However, the speeding-up of neutral plane area occupying the width of coal pillar decreases and becomes stable. The research has found that the intensity of bolt support can noticeably increase the width of maximum bearing and bearing ability for neutral plane area. The stability control technology of small coal pillar with full plastic zone was put forward. And the research results were successfully applied to engineering practice.关键词
沿空掘巷/小煤柱/中性面/数值模拟Key words
gob-side entry driving/small coal pillar/neutral plane/numerical simulation分类
矿业与冶金引用本文复制引用
许兴亮,李俊生,田素川,刘忠堂,李跃文..沿空掘巷小煤柱变形分析与中性面稳定性控制技术[J].采矿与安全工程学报,2016,33(3):481-485,508,6.基金项目
国家自然科学基金项目(51474207)；中央高校基本科研业务费专项资金项目(2011QNA11)；江苏高校优势学科建设工程资助项目 （51474207）
