{"id":25827,"date":"2019-04-17T10:10:41","date_gmt":"2019-04-17T08:10:41","guid":{"rendered":"https:\/\/www.ita.es\/proyecto\/drillsense\/"},"modified":"2025-03-12T10:37:43","modified_gmt":"2025-03-12T09:37:43","slug":"drillsense","status":"publish","type":"proyecto","link":"https:\/\/www.ita.es\/en\/project\/drillsense\/","title":{"rendered":"DRILLSENSE"},"content":{"rendered":"\n
\n
\n

01.- NAME OF THE PROJECT<\/strong><\/p>\n\n\n\n

DRILLSENSE<\/strong> (DEVELOPMENT OF SENSORIZATION KIT FOR EFFICIENT, SUSTAINABLE AND SAFE DRILLING IN MINING AND SUBWAY WORKS) <\/p>\n\n\n\n

National CPF projects<\/a><\/p>\n\n\n\n

General Data: Call: <\/strong>Challenges Collaboration 2017. Funded by: Ministry of Science, Innovation and Universities- State Research Agency\/ DRILLSENSE (RTC-2017-6085-3).<\/p>\n\n\n\n

<\/p>\n\n\n\n

\n Presentation and objectives:<\/strong>\n <\/p>\n\n\n\n

Tunnel construction is currently one of the most active fields within\ncivil engineering and construction. The growing need for infrastructures\nand the need for these infrastructures to be compatible with the orderly use\nof the spaces or the non-interference with the normal activity on the\nsurface means that the number of tunnels excavated, their dimensions and their\ndepth are gradually increasing. <\/p>\n\n\n\n

However, the construction of tunnels is a highly costly activity\n, which together with the increasing technical complexity of the\nitself, makes the study of tunneling processes and cost control of\nthem a constant activity. Throughout the last decades,\nparallel to the increase in tunneling activity, research has been carried out and\nproduced technical solutions aimed at improving the processes and costs of\nmanufacturing. <\/p>\n\n\n\n

One of the most common tunnel construction techniques\nis the “New Austrian Tunneling Method” (NATM) . In it, the excavation is\nusually carried out by controlled blasting based on augers\ninserted in previously drilled holes. The number, orientation and depth of\nsuch holes, as well as the explosive charge, will determine the volume of rock\nblasted and the dimensions of the cavity obtained with each blast. These dimensions\nshould be as close as possible to the theoretical volume required.<\/p>\n\n\n\n

\nA lower volume than necessary will require a\nmanual pitting operation, which is costly, both technically and economically, and will also delay the progress of the\nworks. <\/p>\n\n\n\n

On the other hand, a larger overhang than necessary will increase the\nvolume of the supporting structure, since this structure is designed with\na fixed internal tunnel dimension, filling with concrete the existing gap\nbetween it and the original material. Thus, a larger hole will imply a greater need for concrete filler\n, in addition to generating a greater volume of blasting waste\nto be removed, again involving an increase in costs both economically and temporarily\n.<\/p>\n\n\n\n

This problem makes it necessary to monitor the\nholes drilled, in order to know the trajectory of the holes.\nThis makes it possible to adjust the blasting plan (amount of explosive required) on\ndepending on the actual geometry versus the theoretical geometry. However, the measure is\nperformed after drilling, which means a delay in the work and not\nbeing able to take corrective actions while drilling. <\/p>\n\n\n\n

The objectives to be achieved in the project are:<\/p>\n\n\n\n