Abstract
Intensive development of goal deposits by means of implementation more productive machinery causes the increasing of fire and explosion hazardous situations in mines due to gas-dynamic effects. Mass media regularly reports about tragic events related to gas explosions and mass fatality in coal mines in Russia, neighboring and foreign states. General topic is the creation of composite material based on solid particle of coal and rocks, gases (methane and hydrogen) and moisture and study of mechanisms of initiating action of accident dynamic effects due to mining. Study objective is creation of laboratory facilities for obtaining composite materials “coal-gas-moisture” in the form of coal core-sample and experimental investigation of its physical and mechanical properties. Special stand is developed for obtaining and study of composite materials “coal-gas-moisture”. Dependences of changes of physical and mechanical properties of core-samples on pressure are obtained experimentally by the example of various materials (coal, limestone, graphite, etc.) using the developed stand. Features of change of temperature, deformation of briquette mass, density after pressure increasing up to 200 MPa are established by the example coal of D-make of different coarseness. It is shown that temperature of coal briquette increases maximum up to 14 ºС at air pressure and up to 10 ºС at vacuum. The stand allows to carry out physical simulation of coal and rocks considering its composition. Scientific novelty is the creation of composite materials imitating natural coal and rocks under specified physical and mechanical conditions.
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