The invention discloses a roadside
gangue mixture filling and gob-side entry retaining method for large-dip angle
coal seams. The method is suitable for gob-side retaining of mining roadways through the steep long wall mining method. The method comprises the steps of comprehensively
processing and transporting filling coagulation
grout, advancing a working surface and supports, erecting the roadway retaining and
gangue stopping supporting supports, laying fence nets, laying grouting pipelines and pumping the coagulation
grout. The coagulation
grout is conveyed to the grouting pipelines for bonding
gangue sliding down into a whole on the side, close to a section
haulage way, of a gob in the back of a
stoping working surface, a complex bearing structure with gangue mixture filling bodies and
steel bar meshes as the main part is formed, when the filling bodies formed earliest reach the design strength, the supports are not needed for supporting, and the roadway retaining and gangue stopping supporting supports erected earlier can be advanced and moved forwards along with the working surface and act on the gangue mixture filling bodies newly formed. According to the method, the comprehensive investment is low, movement of gob-side entry retaining top plates can be effectively controlled through the bearing structure, roadway surrounding rock can keep stable and the lateral gangue stopping effect can be realized. In addition, the method is simple, construction is easy and the effect is good.