采矿与安全工程学报2016，Vol.33Issue(2)：238-243,6.DOI:10.13545/j.cnki.jmse.2016.02.008
充填回收房式煤柱采场煤柱稳定性分析
Stability of pillars in backfilling mining working face to recover room mining standing pillars
摘要
Abstract
To provide theoretical basis to analyze the stability of the surrounding rocks in working face to recover the room mining standing pillars with backfilling, the rock mechanical structure consisting of backfilling materials and pillars has been researched by means of theoretical analysis and mathematical derivation. The results have shown that elastic foundation coefficient of pillarskp, compression ratio of backfilling materialsφ, flexural rigidity of roofEIand load of the roofqare the key factors to control the stability of the pillars. Based on the elastic foundation beam theory, the deflection equation of the roof rock beam has been obtained; the calculation of the elastic foundation coefficient of pillars and backfilling materials developed; equations for calculation of the effect of compression ratio of backfil-ling materials on the press on pillars, roof subsidence and characteristics of stress distribution have been deduced; and in the end the assessing formula of pillar stability has been developed in the paper.关键词
充填回收/房式煤柱/煤柱稳定性/弹性地基/充实率Key words
backfilling/room mining standing pillars/stability of the pillars/elastic foundation/compression ratio of backfilling material分类
矿业与冶金引用本文复制引用
安百富,张吉雄,李猛,黄鹏..充填回收房式煤柱采场煤柱稳定性分析[J].采矿与安全工程学报,2016,33(2):238-243,6.基金项目
国家重点基础研究发展计划(973)项目(2013CB227905)；江苏省“青蓝工程”项目；中国矿业大学重大项目培育工程专项项目(2014ZDPY02) （973）
