Analysis Of Matching Between Explosive And Rock Mass

With the rapid development of the national economy, increasing demand for mineral resources. Rock blasting in water utilities, transportation construction, mining and other fields to obtain a wide range of applications. Rock breaking is the most important means of blasting. Rock blasting technology is built on rock mechanics, explosion, detonation theory and other basic subjects, with the deepening of the various basic sciences research, equipment, mechanical, electronic technology, blasting technology has developed significantly. Explosives, the stress wave energy transfer to the rock, crushing of rock, of which the mechanism is very complex. How do the effects of blasting optimization of energy distribution to be aware of the factors and blasting the rock in the distribution of energy in the law.Dynamite explosion was the rapid release of energy in an instant, and because the process is high temperature and pressure, the nature of rock blasting environment is different with complex and changeable, which made rock blasting on our high demands. Physical and chemical properties of explosives, detonation theory, control explosive energy distribution in the rock, so as to safe use of explosives, the reasonable control of drugs, improving the energy efficiency of explosives, effective control of flying rocks and blasting vibration and noise reduction.First, this study under the blasting of rock mechanical behavior. Rock material is a special kind of solid medium, under the effect of the blast load, with a solid under impact loading in the same mechanical response, the use of experts in the study of solid materials under impact loading in the previous conclusions, taking full account of the inherent rock Characteristics, based on the description of the blasting of rock under the action of the mechanical behavior.Second, in the previous article, based on theoretical analysis and practical calculations of the explosive energy in the distribution of rocks. Come to crush zone, fracture zone radius. Calculate the shock wave reamed for power, wave power for the formation of cracks, elastic deformation of shock waves on the rocks for the power generated by the consumption of energy and expansion of detonation gas chamber for the value of energy consumed by power distribution analysis of detonation gas on the micro-crackâ…¡times extended the principle of expansion. Then, further analysis of the rock in the explosion energy to improve the effective utilization of the principle.Analysis of rock failure criteria, in the beginning, due to shock wave intensity is very large, exceeding the compressive strength of rock, hole wall formation of compression failure crush zone, followed by the formation of stress wave in the radial direction of the tensile stress in the rock under tensile stress pulled crack, forming a crack area, in which the use of numerical simulation to determine the strength criteria.Numerical simulation of the use of granite and limestone in the case of different pore network parameters explosion stress wave distribution and energy distribution, and analysis to determine the granite and limestone in the blast holes to be adopted when the network parameters to optimize blasting effect.