Research And Application The Radial Detonating Explosives In The Hole Detonation Wave Propagation Direction

Blasting plays a very important role in the construction projects such as mining, railways, highways, water conservancy, hydroelectricity, national defence, agriculture,urban areas,and so on. In the blasting, how to protect the side slope, the bedrock, the adjacent formation and reduces the demolition earthquake wave harm always is the people issue of concern. Therefore, radial detonating explosives in the hole detonation wave propagation direction is researched in this thesis, and the main research works have been done as follows:(1) According to the detonating wave hydromechanics, the detonation gas univariate isentropic flow and so on related theory, the detonation product and the energy distributed equation was established after the exploded in the different locations along the detonator,and obtained that the detonation product and the partition of energy is different in the blasting explosive detonating wave propagation direction. Also it will certainly to affect the different direction medium degree of action.(2) In this paper,it has proposed the hole blasting explosive in the radial direction detonating structural style, discussed the hole blasting explosive in the radial direction detonating structure designing requirements and the detonating wave progagating wave mark equation, And confirmed it through the field blast test in reducing seismic wave velocity in the blasting.(3) By applying ANSYS/LS-DYNA software for the analysis of the computer numerical simulation in the blasting explosive detonating wave propagation direction affecting the stress which to the concretes in destroying, obtained the corresponding stress field and the concretes destruction field rule. Therefore, control hole blasting explosive in the radial direction detonating technology can increase in some direction the detonating wave dissemination,it causes the rock mass in this direction to being more broken, and reducing the detonating wave dissemination in its reversed direction, thereby reducing the effect of blasting vibration in its reversed direction. (4) In this paper,it combines the rock blasting of Xiamen Airport Road JC2, JC3 contract, Peacock ditch sand and crushed stone project department stone materials yard and gravel processing system of China Water Conservancy and Hydropower Engineering Bureau 8 in the Xiaowan Hydropower Station in Yunnan in the study, and has made good results.Combining the engineering practice, theories are analyzed, the field test and the numerical simulation are carried on, and united the analysis, the test results and the project production practice, it has been achieved satisfactory results.The results will provide the theory basis and project model for the later similar project construction.