采矿与安全工程学报Issue(2)：255-262,269,9.
大煤柱内沿空掘巷窄煤柱合理宽度的确定
Determining the reasonable width of narrow pillar of roadway in gob entry driving in the large pillar
摘要
Abstract
Gob entry driving in the large pillar is a new technology based on double U-shaped roadway layout of the face. According to the geological conditions, certain method of reasonable width of narrow pillar in gob entry driving in the large pillar is obtained based on the combination of limit equilibrium theory, numerical calculation and field practice. It takes into account six parameters for the narrow pillar width from distribution of stress of the section of the lateral support goaf, stress distribution of coal pil-lars, stress distribution of surrounding rock, plastic zone distribution of surrounding rock, the relation-ship between deformation of surrounding rock and pillar width and limit equilibrium theory of narrow pillar width, and finally it is determined that the narrow pillar width is five meters. Then deep analysis is conducted to the impact of stress distribution law between narrow pillar and wide pillar to this section face mining.关键词
大煤柱/窄煤柱/沿空掘巷/煤柱宽度/双U型Key words
large pillar/narrow pillar/roadway in gob entry driving/pillar width/double U-shaped分类
矿业与冶金引用本文复制引用
张科学,姜耀东,张正斌,张永平,庞绪峰,曾宪涛..大煤柱内沿空掘巷窄煤柱合理宽度的确定[J].采矿与安全工程学报,2014,(2):255-262,269,9.基金项目
国家重点基础研究发展计划(973)项目(2010CB226801，2010CB226804)；国家自然科学基金项目(51174213)；新世纪优秀人才支持计划项目(NCET-10-0775)；中央高校基本科研业务专项资金项目(2009QM001) （973）
