预裂爆破在中硬且裂隙发育红砂岩地区的应用研究

介绍了湖南省湘耒高速公路边坡开挖爆破施工时,在中等坚硬且裂隙发育红砂岩地区实施预裂爆破的试验情况。试验取得了较好的效果,解决了施工中的难题。

Discussion on fine blasting technology in open-pit mines

Based on thorough research on fine blasting theory, bringing in advanced blasting tech overseas and management concepts, combined with characteristics of open-pit mining blasting, we embarked on quantitative design, careful construction and fine management to blaze a trail over a package of fine blasting tech on open-pit mining for promote the development of fine blasting theory. Use geological compass measurement of geological structure, and combined with drilling geological data, using the software analysis model to analyze the blasting parameters, simulation, and the analysis of simulation results and the actual blasting effect, constantly adjust, optimization of blasting parameters, achieve the design refinement goal. At the same time, a series of advanced measuring tools and instruments, such as laser surveying instrument, borehole deflector and detonation velocity instrument, are used to provide technical support for the refinement of blasting construction. As blasting engineering is a high-risk industry, in order to identify potential risks and ensure the quality and safety of blasting, advanced management tools and means such as blasting site inspection checklist, work safety analysis form and standardized operation procedure are introduced to achieve fine management. Through practice and exploration of fine blasting technology in open-pit mines, application experiments have been carried out in some mining projects, and expected results have been obtained.