摘要
焦坪矿区大采深、厚煤层综放开采条件下,地表下沉量较小,呈现非充分的采动影响现象。通过相似材料模型试验,分析了本区地质开采条件下工作面宽度、隔离煤柱尺寸、上覆岩层岩性与地表移动的内在关系,揭示了岩层移动的基本特征。研究证实了深部开采条件下工作面间留设一定宽度的隔离煤柱对地表沉降起到有效的控制作用,这可为本区及类似条件的其他矿井提供参考。
A phenomenon of sub-critical mining subsidence appears in Jiaoping mining area in Shaanxi Province,which is under the conditions of great mining depth, thick seam and fully-mechanized top-coal caving. By similar material tests, the relationships of ground movement with the width of working face, the size of face-separated pillar, and the lithologic characteristic of overlying strata are studied. The main characters of rock masses movement are revealed. The achieved results prove that the face-separated pillars with a definite width can effectively control ground subsidence. It will provide references to those mines with similar conditions in Jiaoping mining area.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第16期2929-2933,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重大项目(50490273)
关键词
采矿工程
深部开采
隔离煤柱
相似材料模型试验
岩层与地表移动规律
mining engineering
seam mining at a great depth
face-separated pillars
similar material model test
law of strata and ground movement
