摘要
分析石炭系特厚煤层在煤柱下方的矿压显现规律,采用理论计算得出不同层位复合煤柱应力底板传播规律,并以相似材料模拟实验对其进行验证。研究表明:石炭系煤层开采时出现强矿压现象的原因是受侏罗系煤柱影响石炭系覆岩承载结构无法稳定存在,石炭系上覆岩层直至侏罗系岩层的重量是全部由工作面自身承担造成的。
The rules of strata behavior in special thick coal seams of Carboniferous have been analyzed. By theoretical calculation, the rules of stress floor of composite coal pillars with different layers is obtained, and the results are verified though the similar material simulation experiment. The results show： during Carboniferous coal seam mining, it has occurred many phenomena of strong underground pressure, it is caused by the bearing structure of Carboniferous overlying strata cannot be stabilized due to Jurassic coal pillar, the weight of Carboniferous overburden to Jurassic strata is entirely borne by the working face itself.
出处
《煤炭技术》
CAS
北大核心
2017年第3期70-72,共3页
Coal Technology
关键词
关键层理论
煤柱
强矿压显现
key layer theory
coal pillar
strong underground pressure
