特近距煤层上层采动对下层开采影响试验研究

TEST RESEARCH ON INFLUENCES OF UPPER SEAM WORKING ON LOWER' S IN EXTRA-CLOSE SEAMS

利用平面应力相似材料模拟实验，通过对特近距煤层不同开采条件下上覆岩层破断移动规律和支承压力分布变化特征的分析，研究探讨了特近距煤层上层采动对下层开采的影响程度和合理的开采方案及顶板管理措施。

Analysing the features about deformation,breaking and displ Dacement of upper cover strata as well as its abutment presssers distributions in different extracting conditions of the extra-close seams by means of plane stress similarity material model experiments , the paper makes researches on influence of upper seam working on lower's in the extra-close seams , and put forwards tile reasonable working scheme and roof-control methods.