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Information × Registration Number 0207U004731, 0107U000980 , R & D reports Title To develop a method of estimating the efficiency of protective advance overmining of outburst seams popup.stage_title Head Koptykov Viktor Pavlovych, Registration Date 14-08-2007 Organization Makeyevka State Safety in Mines Research Institute popup.description2 The thesis is devoted to the principles and development of a method of estimating the efficiency of protective advance overmining of outburst seams. As established, the efficiency of protective advance is determined by parameters of a protective seam and a working seam, thickness, strength and relative location of rock interlayers. The influence of interlaying rocks on protection effi-ciency is characterized by their relative deformation at the floor layer of a working seam. A procedure has been devel-oped to estimate relative deformations of overmined stratified rock mass. Through the method of principal components, a model presents precise separation of multidimensional units into three areas: without protection, with inefficient protec-tion, and with good protection. A method has been developed to determine the effi-ciency of protective advance overmining of outburst seams for practical use at the coal mines of Ukraine. Seam classifi-cation (discriminant analysis) in accordance with protection rateis based on analytical probabilistic assessments, through computer programming or a diagram. The method has been verified experimentally at Zasyadko Mine. Product Description popup.authors popup.nrat_date 2020-04-02 Close