The classical methods for defining the pattern of a rock blasting are predominantly empirical. I am looking for analytical answers, starting from phenomenological principles, based on rock mechanics and dynamics.
Esse assunto foge do meu conhecimento. De qualquer forma vou perguntar a alguns colegas da minha empresa para ver se consigo alguma resposta para a sua pergunta.
Here's a short article you can go through to understand the selection of optimum size blast hole diameter. I have attached it. You can find the research articles and clear definition and reasons behind selection of optimum blast hole diameter.