Kurnosov S. New Scientific and Technical Principles of the Massive Degassing Through Additional Roadway With Its Ensured Steadiness.

Purpose of the work is to design scientific and technical principles of the mass degassing through additional roadway with its ensured steadiness when such additional roadway is allocated in the mass previously unloaded from the high rock pressure and effective supproting practices and facilities are used for improving degassing effect. Object of the research – processes of rock deformation and methane migration in the gas-saturated mass induced by mining operations. Methods of the research – a complex method is used in the work which includes analysis and generalization of the known statements on the related problem; analytical studies and mathematic simulation of processes occurred in the mass disturbed by mining operations; lab studies of parameters for supporting facilities in degassing roadways; underground study of mass deformation and methane migration under the impact of technological processes of the coal production and rational parameters of supports in degassing roadways; testing of the findings in natural mining conditions. Results of the research. The author has revealed regularity and mechanism of the stress redistribution over time and under the influence of various technological factors in the previously unloaded mass and in mass of adherent longwalls being in operation, and describes associated changes of the methane-migration paths. The author designed scientific and technical principles for allocating the gas-collecting tunnel with its ensured sta-bility and effectiveness; technological schemes for effective tunnel support in various conditions; degassing schemes with processes of the coal production and mass de-gassing separated in time and in space. The author designed new technological elements for degassing of the coal-and-rock mass by way of building of gas-collecting tunnels designed for special mining conditions in the stratum m3.