文明煤矿采区下山保护煤柱合理尺寸计算研究  

Study on Reasonable Size of Protective Coal Pillars in Mining Area Dip

作　　者：张红义 

机构地区：[1]山西焦煤霍州煤电集团汾源煤业公司,山西忻州035100

出　　处：《煤炭工程》2014年第11期82-84,88,共4页Coal Engineering

基　　金：霍州煤电高层专业人才实践工程资助项目(HMGS2012XX)

摘　　要：为了留设合理的采区下山保护煤柱,采用理论分析与计算机数值模拟两种手段展开研究,确定采区下山煤柱的留设准则,即在考虑双侧采动的前提下,尽可能将采区下山布置在原岩应力区内。并结合实际工程背景条件下,对采区下山保护煤柱的留设宽度进行计算,得到采区下山保护煤柱尺寸不小于33.8m,为了验证理论计算的合理性,采用计算机数值模拟,通过分析不同尺寸煤柱的支承应力峰值、塑性区分布范围与支承应力分布范围,最终确定40m宽的煤柱最为合理。In order to determine reasonable size for protective coal pillars in mining area dip the,theoretical analysis and numerical simulation was conducted. The requirement of coal pillar was, the mining area dip should be arranged in original rock stress zone if possible, considering influence of bilateral mining. Combined with practical engineering background,the width of protective coal pillar in mining area dip was calculated,obtaining the minimum size of coal pillar was 33. 8m. The result of theoretical calculation was verified with numerical simulation,on peak bearing stress,plastic zone distribution range and bearing stress distribution range. And combining the results of both measures,the reasonable width of coal pillar was 40 m.

关 键 词：保护煤柱 合理尺寸 支承应力 塑性破坏 

分 类 号：TD822.3[矿业工程—煤矿开采]