“三软”煤层关键层下方塑性破坏区分析  

Analysis on Plastic Damage Zone Under the Key Strata of "Three Soft" Coal Seam

作　　者：王志强[1] 徐杰[1] 刘宏军[1] 邢瑞军[1] 王建明[1] 马奇飞 周伟[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤矿安全》2017年第2期181-184,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51404270);中央高校基本科研业务费专项资金资助项目(2011QZ06)

摘　　要：为进一步研究了解"三软"煤层开采过程中矿压显现的情况,以林南仓矿为工程实例背景,利用错层位巷道布置方式进行优化,从开采过程中形成的塑性破坏区着手分析,并采用数值模拟结合实际情况的方法进行研究。经分析论证表明:工作面不断推进过程中,覆岩关键层下方会形成采动"O"形圈,随着接续面的增加,整个塑性破坏区会呈现出"连续拱"。To further study and understand the strata behaviors of ＂three soft＂ coal seam in mining process, taking Linnancang Mine as the engineering example, we use staggered roadway arrangement to carry out optimization, and analyze and study the plastic damage area forming in mining proces by the method of combining numerical simulation and actual situation. The analysis shows that there will be a mining ＂O＂ ring below key strata with the advancing of the working face, and with the increase of continuous surface, the plastic damage area will present a ＂continuous arch＂.

关 键 词：错层位巷道布置 “三软”煤层 数值模拟 塑性破坏区 矿压显现 

分 类 号：TD322[矿业工程—矿井建设]