Design and Execution of Drilling and Blasting Works Using Modern Scanning Techniques

The basic principles for the design of the parameters of the shooting techniques are: the exact definition of the technical and economic objectives and especially those related to the granulometry of the demolished material, knowledge of the characteristics of the rock massif (degree of cracking and local fracturing, compressive and tensile strength of the rocks, the degree of homogeneity and their compactness), knowing in detail the possibility of executing the firing holes for loading and crushing the demolished material, knowing the explosive used and its behavior in the concrete conditions of the quarry, specifying the restrictions imposed by the protection of the environment (distances from the surrounding objectives, the maximum accepted levels of vibrations, noises, dust). In order for all these principles to be fulfilled, there are methods of designing and executing the drilling and shooting works so that the results of the shooting works are those expected in conjunction with a rational exploitation in safe conditions. The paper presents a case study where the design and execution of drilling and blasting parameters was successfully applied using modern equipment.