01.- NAME OF THE PROJECT
DRILLSENSE (DEVELOPMENT OF SENSORIZATION KIT FOR EFFICIENT, SUSTAINABLE AND SAFE DRILLING IN MINING AND SUBWAY WORKS)
General Data: Call: Challenges Collaboration 2017. Funded by: Ministry of Science, Innovation and Universities- State Research Agency/ DRILLSENSE (RTC-2017-6085-3).
Presentation and objectives:
Tunnel construction is currently one of the most active fields within the tunneling industry. civil engineering and construction. The growing need for infrastructure and the need for such infrastructures to be compatible with the use of the the orderly use of space or the non-interference with the normal activity in the The number of tunnels excavated, their dimensions and the number of tunnels depth gradually increases.
However, the construction of tunnels is an activity that is This, together with increases in the technical complexity of the systems, has resulted in a the study of tunnelling processes and cost control of the tunneling process. is a constant activity. Over the last few decades, from In parallel with the increase in tunneling activity, research has been carried out and produced technical solutions aimed at improving the processes and costs of manufacturing.
One of the most common tunnel construction techniques is in “New Austrian Tunneling Method”, (NATM) . In it, the excavation was is usually carried out by controlled blasting based on auger blasting. introduced into previously drilled holes. The number, orientation and depth of the drill holes, as well as the explosive charge, will determine the volume of rock and the dimensions of the cavity obtained with each blast. These dimensions The volume should be as close as possible to the theoretical volume required.
A smaller volume flown than necessary will require a operation of manual pitting, which is costly, both at the level of the and economically, also resulting in a delay in the progress of the works.
On the other hand, a higher overhang than necessary will increase the volume of the supporting structure, since this structure is designed with a fixed internal tunnel dimension, filling the existing void with concrete between it and the original material. Thus, a larger gap will imply a larger of concrete for backfill, in addition to generating a greater volume of waste. to be removed, again entailing an increase in costs, both in terms of the economic as well as temporary.
This problem makes it necessary to monitor the The purpose of this study is to know the trajectory of the drill holes drilled in order to know the trajectory of the same. This allows the blasting plan (amount of explosive required) to be adjusted in function of actual versus theoretical geometry. However, the measure was The drilling is carried out after the drilling, which means a delay in the work and not corrective actions can be taken while drilling.
The objectives to be achieved in the project are:
TOTAL PROJECT BUDGET: 1,021,432 EUROS
TOTAL BUDGET ITAINNOVA: 255460€.
TOTAL PROJECT FINANCING: 294794.45 Grant 305034.56 Loan 70451.45 ERDF reimbursable advance
TOTAL FINANCING ITANNOVA: 224298€.
Challenges Collaboration 2017. Funded by: Ministry of Science, Innovation and Universities- State Research Agency/ DRILLSENSE (RTC-2017-6085-3).
