Perforación rotativa de rocas | 32/118 | UPV

Title: Rotary Rock Drilling Description: The objectives of this learning object are to help students understand how rotary rock drilling works, to explain the influence of factors affecting drilling, and to distinguish between the different types of cutting and breaking tools. To this end, the content is structured in four sections: system description, rotation mechanism, thrust systems, and drilling tools. Yepes Piqueras, V. (2014). Rotary Rock Drilling. https://riunet.upv.es/handle/10251/38670 Automatic description: In this video, a professor from the Department of Construction Engineering at the Polytechnic University explains what rotary rock drilling is, the factors that affect its performance, and the different types of drilling tools. Rotary rock drilling is a system that combines the rotation of tools with the application of a thrust force to drill. Originally developed for the oil industry for soft rock drilling, this system is now used in blasting operations with diameters ranging from 50 to 311 mm. The system comprises a power source, a drill string, rotation, thrust, and hoisting mechanisms, cutting tools, a flushing system, and a dust extraction device. Drilling systems can be mounted on tracks for large, static excavations or on tires for greater mobility. The power source can be electric, thermal, or diesel-electric, depending on the drill hole size. Rotation is achieved using drill strings driven by electric or hydraulic motors. The rotation speed is adjusted according to the rock hardness and the drill hole diameter. Thrusting systems are crucial and vary in their implementation, but they must apply the appropriate pressure to prevent excessive wear or ineffective breakage. Drilling tools vary depending on the rock type and diameter, including tricone bits for rocks of varying hardness and tungsten carbide or diamond bits for softer rocks. In conclusion, rotary drilling is versatile for rocks of varying hardness, where thrust force and rotation speed are key parameters. Tricone bits are more common in soft rocks, while cutting tools are effective under certain conditions. Author: Víctor Yepes Piqueras Course: This video is 32/118 of the course Construction Procedures | Universitat Politècnica de València (UPV).    • Curso Procedimientos de Construcción | Uni...   Universitat Politècnica de València (UPV): https://www.upv.es More videos at:    / valenciaupv   Access our MOOCs: https://upvx.es #Drilling #Boreholes #Machinery #GeotechnicalEngineering #ConstructionProcedures #CivilEngineering #ConstructionEngineering