Control over blasting preparation of rock while mining of group of coal seams

The coal quarries of Kuzbass were studied with the aim of the substantiation and selection of methods of control over the blasting energy during the destruction of rock near the coal seam in order to reduce the losses of coal. As a result the regularities of formation of the zones of destruction of rock near the deep-hole charges with due regard for anisotropy were determined as well as the parameters of the location of the deep-hole charges in the contact zone near the coal seam. The results obtained were introduced into operation. They may also find their fields of application in the development of opencast collieriesAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio