采矿与安全工程学报2011，Vol.28Issue(1)：1-5,5.
采动巷道底鼓机理与控制技术
Mechanism of Floor Heave and Control Technology of Roadway Induced by Mining
摘要
Abstract
With theoretical analysis, numerical computation, observation through boring, the figure of floor heave of roadway affected by mining is analyzed, finding the mechanism of floor heave is that the shallow strata are likely to heave whereas the deep strata are likely to sink down.Meanwhile, the law of displacements of different depths for strata is discussed, with conclusion“two dots and three areas” in floor:zero displacement dot and zero strain dot.On the basis of this, the floor can be divided into three areas: tensional strain rising area, tensional strain sinking areas, and compressive strain sinking areas.Furthermore, the effect of floor surrounding rock and horizontal stress on floor heave features is discussed.Then some research views have been proposed to control the floor heave of roadway affected by mining which we should support the broken floor in order to increase the intensity after peak and residual intensity, improve the floor surrounding rock hy supporting, reduce the size of floor without supporting, control the effect of horizontal stress on floor heave.Finally, the control technology is discussed:l) We should reduce the surrounding rock stress by optimizing the roadway location;2) It is essential to support floor by hydraulic expansion bolt anchored through the range of it’s length.And these control methods have been applied to a typical coal wedge roadway affected by mining.Field observations show that the control technology is very effective.关键词
采动巷道/底鼓/两点三区/巷道布置/水力膨胀锚杆Key words
roadway induced by mining/ floor heave/ two dots and three areas/ roadway location/ hydraulic expansion bolt分类
矿业与冶金引用本文复制引用
柏建彪,李文峰,王襄禹,徐营,霍灵军..采动巷道底鼓机理与控制技术[J].采矿与安全工程学报,2011,28(1):1-5,5.基金项目
国家自然科学基金项目(50774077) （50774077）
