煤矿安全2018，Vol.49Issue(4)：189-192,196,5.DOI:10.13347/j.cnki.mkaq.2018.04.049
急倾斜煤层圆弧段工作面矿压分布规律
Mine Pressure Distribution Laws of Arc Segment Working Face in Steeply Inclined Coal Seam
摘要
Abstract
The mining pressure of circular arc segment in the mining of deeply inclined thick coal seam fully mechanized coal face has significant localization and asymmetric features. Taking 37220-1 working face of Dongxia Coal Mine in Huating Mining Area of Gansu province as the research background, combined with the mining geological data as the background data, we firstly make use of FLAC3D numerical model to monitor the stress changes of circular arc section near the working face. Result analysis shows that the whole stope space has the local characteristics of the ellipsoidal pressure arch shell structure; the surrounding rock stress is large and the vertical stress is in the peak in the joint of arc segment and straight segment of working face; the upper part is the free caving zone of rock mass, the surrounding rock is loose and the stress appears the minimum value, and local division was conducted to guide the practice of mine pressure control.关键词
急倾斜厚煤层/圆弧段工作面/矿压分布/局部化/自由冒落区Key words
steeply inclined thick coal seam/circular arc segment face/mine pressure distribution/localization/free caving zone分类
矿业与冶金引用本文复制引用
任鹏召,王金安,韩现刚..急倾斜煤层圆弧段工作面矿压分布规律[J].煤矿安全,2018,49(4):189-192,196,5.基金项目
国家自然科学基金重点资助项目(U1361208) （U1361208）
