Rock Blasting Explosives Test The Distribution Of Stress Wave And Research

With development of economy in our country,technology of rock blasting have extensively applied in the field of water conservancy projects and hydroelectric power projects,mine,trafficand construction of urban and so on.The blasting technology is very important method on rock breaking and sometimes is exclusive method.Broken because of rock blasting is mainly. because of the role of stress waves caused by the explosion stress wave energy transfer to the rock and the formation mechanism of fragmentation are complex,and the impact of the explosion stress wave is a factor which is also a lot of very complex, so the explosion of rock stress wave distribution of research is essential and necessary.In today's practice,the stress wave test,there are two main methods:First,the surface of test;two are embedded in the test drilling in vivo strain gauge,and then backfilling,for testing.In this paper,the first method that the surface of testing methods.First of all,in the paper reach on mechanical behavior of rock under explosion load.Rock Material is a special kind of solid medium and have the same of dynamic response under blasting load,showing that mechanical behavior of rock under explosion load used of material expert consequents and base on full considerations upon the natural characteristic of rock.Second,this article at the basis of our predecessors through the approximate formula and similar acoustic theory,theory is derived and the actual calculation of the explosives at the rock explosion of the distribution of the stress wave.Give the approximate distribution of the stress wave test formula.Finally this paper,according to similarity theory,the system to do the spherical cement mortar test block,the actual measured concentration of charge at trial DDNP block explosion stress wave in the distribution,make full use of spherical charge in the spherical explosion test block in the stress wave at the border for normal incidence and refraction at the border on the characteristics of non-derived rocks with peak stress wave attenuation law,and finally an analysis of experimental results,the correct charge to draw focus on the rock explosion at the distribution of the stress wave.