Study On Energy Distribution Of Rock Fragment In Explosive

The application of blast energy is still very important in engineering project despite that science and technology developes every day. The development of science and technology is continually pushing the study on the distribution of blast energy forward. However, the related theoretical and experimental issue regarding the relationship between the strain and destruction inside the rocks and the transmission, conversion and distribution of energy under the blast effect still remains extremely difficult.There are not many research papers related to the test on the stress wave of the rock media under coupled charging blast and uncoupled charging blast conditions, and that’s why we unfolds the test in this thesis on the parameters of energy of the two different blast conditions, mainly covering following areas:First of all, this thesis studies the physical properties of rocks, which are the most common solid media in the natural world and closely related to many engineering blast projects. Since the mechanical response of rocks under blasting load is identical with that under other types of impact load, we are aiming to explain the mechanical properties of rocks and the relationship between the strain and destruction under the effect of the blasting load under the basis of already known mechanical properties of rocks and their characteristics of deformation under the effect of impact load.Secondly, based on the summary of former researchers’theories, this thesis derives an experimental equation of the specific energy of surface through theoretical analysis on the dispersion of energy in the rocks and concludes the spreading law of stress waves in the rocks.At last, this thesis sets up a super-dynamic strain test system to, through the pre-buried strain brick method, test the change of internal strain of the rock under coupled charging blast and uncoupled charging blast and analyze the strain wave difference under the two different charging conditions and identify the distribution status of the stress wave energy in different distances through calculation.