Logunova O. Geomechanical substantiation of reuse feasibility of development workings for coal mines

The research purpose is geomechanical substantiation of such parameters of combined system of lining and support on the roadhead of roadway and longwall through which is possible and economically feasible to ensure the reuse of development workings under the mining and geological conditions of "Selidovugol" mines. As a result of the in-situ measurements revealed that the value of the remaining area can be a criteria that characterizes the feasibility for belt road reusing to adjacent longwall. Such value is the remaining area in the light that equal to 8.5 m2.On the basis of justified criteria the influence of various support systems on stress-deformed state of the geomechanical system "lining - support - array" was solved. It is established that a residual inside half-timbers of roadway can act the criteria that characterize suitable for reuse in development workings adjacent to the longwall. Economic rationality criteria for reuse roadway is a residual inside half-timbers, equal to 8.5 m2. It was found that by using a support system in the form of sawed stick crib, with the two - tier system of frame - bolt lining the criteria for development workings reuse was performed over the longwall. The influence of the angle of the bed at the geomechanical system parameters was adopted.The developments were successfully implemented and approbated. Economic effect is 2422 UAH on 1m.