采矿与安全工程学报Issue(4)：631-634,4.
西石门铁矿散体临界深度预测与地表陷落范围控制
Critical depth prediction and surface subsidence range controlling based on Xishimen mine
摘要
Abstract
The traditional way of predicting subsidence range by stagger angle doesn’t adapt to pro-duction. This paper is to have a study of the relation between the height of critical bulk solid column in subsidence pit and subsidence range. After an analysis of lateral anchorage force of mobile bulk in pit, the paper proposed that the active pressure and passive pressure of dispersion both prevented the scaling of side wall rock while the thickness of bulk solid in pit is not less than the height of critical bulk solid column and the related factors affecting the height of critical bulk solid column is researched. The re-sults show that filling subsidence pit with waste can lower the critical depth and control surface subsi-dence range.关键词
临界深度/陷落范围/临界散体柱/被动压力Key words
critical depth/subsidence range/critical bulk solid column/passive pressure分类
矿业与冶金引用本文复制引用
郑建明,任凤玉,唐烈先..西石门铁矿散体临界深度预测与地表陷落范围控制[J].采矿与安全工程学报,2014,(4):631-634,4.基金项目
国家自然科学基金重点项目(50934006)；中央高校基本可研业务费专项资金项目(N100701001) （50934006）
