Study on the Classification of Rock Mass Blastability and Prediction of Explosive Unit Consumption in Pulang Copper Mine
To optimize the blasting parameters for underground mining in Pulang Copper Mine,the theory and model of set pair analysis were adopted.The rock mass density,tensile strength,compressive strength,and rock integrity coefficient,which had low linear correlation and can be easily obtained in engineering,were used as measurement indexes to classify the rock mass blastability of the eastern,western,and southern parts of the mining area.Firstly,the single factor correlation degree of each rock mass sample was calculated,and the index weight coefficient under each measurement condition was determined by analytic hierarchy process.Finally,a comprehensive expression based on these four indexes was obtained to determine the blastability grade of rock mass.The results show that the blastability of rock mass in the western region is more difficult,and the blastability of rock mass in the eastern and southern regions is easier.On the basis of blastability classification,the prediction of explosive unit consumption for the eastern,southern,and western rock masses was carried out,which provided some guidance for the selection of blasting parameters.
Rock mass blastabilitySet pair analysis modelAnalytic hierarchy processExplosive unit consumption
万方数据
维普
