Geomechanical Processes during Underground Mining: School of Underground Mining 2012

 Content: Front Cover; Table of contents; Preface; Development of coal industry of Ukraine in the context of contemporary challenges; Features of carrying out experiment using finite-element method at multivariate calculation of ''''mine massif --
 combined support'''' system; Parameters of shear zone and methods of their conditions control at underground mining of steep-dipping iron ore deposits in Kryvyi Rig basin; Concept and assumptions for developing underground brown coal gasification plant for supplying synthesized gas to heat and power plant. Study of rock displacement with the help of equivalent materials using room-and-pillar mining methodEcological problems of post-industrial mining areas; The mechanism of over-coal thin-layered massif deformation of weak rocks in a longwall; Methodological principles of negative opencast mining influence increasing due to steady development; Hydrodynamic cavitation in energy-saving technological processes of mining sector; Economic aspects of development strategy of mining companies; About management of processes of deformation and destruction of rocks around of working of deep mines. The formation of the finite-element model of the system ''''undermined massif-support of stope''''Software development for the automatic control system of deep-water hydrohoist; Degassing systems rational parameters selection at coal mines; Analysis of stress-strain state of rock mass while mining chain pillars by chambers; Identification the cutting machine rational feed rate according to the working area stability factor; Estimation of reliability and capacity of auxiliary vehicles while preparing coal reserves for stoping; Influence of coal layers gasification on bearing rocks. Ecological aspects of the quantitative assessment of productive streams of coal minesDevelopment of mathematical foundations and technological support of the processes of complex hydro-pneumatic impact on coal seams; Analysis of test methods of determining antidust respirator quality; Investigation of the geomechanical processes while mining thick ore deposits by room systems with backfill of worked-out area; Spontaneous combustion and coal dust explosibity related mapping of South African coalfields; Monitoring of quality of mineral raw material by method of conductivity. Imitating modeling stability of mine workingsIrregularity of deposition of hard coal in thin seams in Poland according to the criterion of the thickness variation seams; Experimental investigation of aeroelastic and hydroelastic instability parameters of a marine pipeline; Basic positions of the project of energy-efficient system for solar heat supply; The estimation of effect of the dust-proof respirators' protective efficiency upon the mining workers' dust load; Derivatography as the method of water structure studying on solid mineral surface.
 Abstract:             This volume deals with economic aspects of mining companies' development strategies, various mineral deposits development techniques, imitational modeling of mine workings with rock massif, methane extraction technologies during coal mining, geomechanical processes during plow mining, mining transport importance for mineral extraction, massif strain-stress state management using non-explosive destructing materials, and surface mining's detrimental influence on the environment. Special attention is paid to alternative ways of mining, such as borehole underground coal gasification for extraction