Observatorio de I+D+i UPM

Memorias de investigación
Capítulo de libro:
Assessment of post-blast damage zones in tunneling operations through measurement while drilling records
Áreas de investigación
  • Ingenieria civil
Use of measurement while drilling (MWD) to predict the potential over- and under-excavated zones created in the contour of a tunnel developed by drill and blasting. Scanner profiles of the excavated sections have been compared with the position of contour blastholes to develop an excavated mean distance value (EMD), which may be considered as a macroscopic damage measure. A thorough normalization of the MWD data gathered has been carried to minimize external influences that may hide the actual response of the rig to rock mass. 54 blasts, which comprise around 1700 contour blastholes, have been compared with more than 2200 excavated sections. A non-linear multiple-variable power-form model has been developed to predict the excavated mean distance as function of the normalized penetration rate, hammer pressure, rotation speed, rotation pressure and water flow parameters, and the lookout distance. This combines the rotational, hydraulic and percussive mechanisms of the drill, and the confinement of the rock mass by depth. The model has a determination coefficient of 0.74, with the coefficients of the model strongly significant.
Edición del Libro
Editorial del Libro
Taylor & Francis Ltd. / Taylor & Francis Group
Título del Libro
Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art
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Esta actividad pertenece a memorias de investigación
  • Autor: Juan Navarro (MAXAM)
  • Autor: Pablo Segarra Catasus (UPM)
  • Autor: Jose Angel Sanchidrian Blanco (UPM)
  • Autor: Ricardo Castedo Ruiz (UPM)
  • Autor: Lina Maria Lopez Sanchez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Ingeniería de Georrecursos y Modelización
  • Departamento: Ingeniería Geológica y Minera
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