Application Research On Gob-side Entry Retaining Of Yunjialing Coal Mine 12305 Working Face

The background of this paper is Yun Jialing Coal Mine 12305 face transport drift, by using the numerical simulation and engineering monitoring method to study the high water alley next to the filling of gob roadway technology application.In this thesis, based on theoretical analysis, numerical simulation and engineering test, comparison and analysis of different along the roadway surrounding rock and backfill should strain development law, along goaf left lane and roadside backfill in the analysis of stress and deformation characteristics of the different mining stages that gob High Roadway side packing body position is more reasonable and the filling body force characteristics of regular understanding.Through the numerical simulation analysis of different widths of the filling body in different stages of excavation, backfill and help stress concentration zone of vertical stress, vertical displacement, plastic failure area distribution range, and draws a conclusion that the fillings, and under the help of coal stress distribution law under section of the roadway supporting protection design for reference.Finally through field measurement, on the high water alley beside filling body in the working face during mining stress are measured and analyzed to verify the size parameters of filling body, roadside backfill material ratio selection of rationality, the conclusion section work face mining, roadway and gob provide theoretical basis.