急斜煤层Z型通风留巷水平分层放顶煤采煤方法上覆岩层的运动规律的研究

急倾斜煤层Z型通风留巷水平分层放顶煤采煤方法是针对厚度为5~8 m急倾斜煤层新的有效开采方法。然而对该方法的上覆岩层规律研究还相对欠缺。该文章通过理论分析和RFPA2D数值模拟分析,得出该方法在开采过程中倾斜方向上覆岩层上部运动比较剧烈、范围比下部大且易形成铰接结构,进而可借助水平分层综放工作面合力在分层顶煤剖面处投影为一点没有产生下滑的力对顶板岩层移动规律进行分析,为工作面的支架选型和支护理论提供依据,并对该方法的完善和推广奠定坚实基础。

Steeply inclined coal seam Z type ventilation roadway in horizontally stratified roof caving mining method overlying the motion law of the research

Steeply inclined coal seam Z type ventilation roadway in horizontally stratified roof caving mining method is according to the thickness of 5 ~ 8 m steep coal seam mining new effective method. But to the method of overlying rock law research also correspondingly deficient, this article through the theoretical analysis and RFPA2D numerical simulation analysis, the conclusion is drawn that this method in mining process tilt direction on the upper strata movement quite severe, scope than lower big and easy form hinged structure, and then by means of the horizontal slice full-mechanized caving mining face force in stratified top-coal section place projection for a little not produce declining force of roof strata movement law to carry on the analysis, in the working face support selection and supporting theory to provide the theory basis, and the methods to improve and promote lay a solid foundation.