中文摘要：

采用理论分析、数值计算、现场钻孔窥视等方法研究分析了采动巷道底板变形破坏特征,揭示了浅部鼓起、深部下沉的底鼓机理,进一步分析了不同深度底板岩层的位移规律,发现了底鼓的＂两点三区＂特征：即采动巷道底板存在零位移点、零应变点,由这两个点将采动巷道底板分为拉应变上升区、拉应变压缩区、压应变压缩区.研究得到了底板岩性、水平应力对底鼓特征的影响规律,据此提出采动巷道底鼓控制重点是加固破碎底板,增大其峰后强度和残余强度,以加固的方法实现改良底板岩性,同时尽量减小底板自由面积,控制水平应力对底鼓的影响.提出了采动巷道底鼓控制技术：1）优化巷道布置以降低围岩应力环境;2）采用全长锚固的水力膨胀锚杆加固底板.并在一条典型的煤柱采动巷道进行工程应用,现场应用结果表明该技术控制底鼓效果显著.

英文摘要：

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 by supporting,reduce the size of floor without supporting,control the effect of horizontal stress on floor heave.Finally,the control technology is discussed：1） 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.