多煤层条带开采煤柱应力分析  

Analysis of the Pillar's Stress in Multi-coal Seam Strip Mining

作　　者：张宏梅 

机构地区：[1]徐州市吉达地理空间信息技术开发中心,江苏徐州221000

出　　处：《山西焦煤科技》2012年第2期14-17,21,共5页Shanxi Coking Coal Science & Technology

摘　　要：条带开采是控制地表沉陷及采动损害的有效方法之一,但是目前对多煤层条带开采时上下留煤柱的协同作用研究还不足。本文采用FLAC数值模拟软件,系统研究了多煤层条带开采中不同采深、不同采宽、不同层间距和上下煤柱的空间位置关系时留设煤柱的受力情况,并与在单一煤层条带开采设计中使用的经典的威尔逊理论计算得到的煤柱实际应力进行对比,分析指出了其差异的原因,为以后多煤层条带开采的设计提供了可借鉴的理论和方法。Strip mining is one of the efficient measures to control surface subsidence and mining damage. How- ever, the researches on the laws of the surface subsidence are still deficient in multi - coal seam strip mining at pres- ent. Based on the Fast Lagrangian Analysis of Continua （ short for FLAC） numerical simulation software, the pillars stress are systemic studied for the different depth, different mining widths, different distance between seams and the special relations of the upper pillar and the lower pillar in vertical direction in multi - seam strip mining in this paper, which was contrasted with the actual pillar＇ s stress calc.ulated by classical Willson＇ s theory used in strip mining de- sign in single coal seam, at the same time indicate the reason of difference. The results can be used for reference the- ory and measure in the designing of multi - coal seam strip mining

关 键 词：多煤层条带开采 FLAC 数值模拟 煤柱应力 

分 类 号：TD823.65[矿业工程—煤矿开采]