Presented an innovative model for the estimate of parameters in the excavation of tunnels
The model that has developed Rooster comes to solve a real problem of the tuneladoras and microtuneladoras: “During the execution of the tunnels sucedían breaks of the useful of cut of unexpected form, that with the existent models could not explain”, signals the author of the thesis. To solve the problem, and taking advantage of that the modern machines collect a lot of more data that the ones of before, decided to analyse these data. Rooster has analysed the registers of perforación of 6,5 km of tunnel. These data were obtained by diverse sources, but mainly of the project of investigation ‘Reduction of the consumption of water of network in the process of microtunelización' of the
“Is a real need, because, for example, in the company where work, poses this problem of face to predict the break of the useful of cutting or to the hour to know which is the limit of operation of the machine: until where can arrive with the machine?”, it explains Rooster. Thanks to the mathematical model developed by the author, can know which is the limit of operation of the machine, or if it is more convenient to use a type of cabezal or another.
The importance to predict
“Imagine a hammer that is striking the rock”, explains Rooster. “We have to know to which rhythm can work with this hammer and when goes to break the hammer. Those are the two things that interest”. Precisely the model helps to predict this type of questions: when it goes break the hammer, how much can tighten , etc. “And like the advance is proportional by force with which give the hit, allows you know that if you give a hit of such calibrate that it hold it the hammer, go to advance so much. Like this, I can say that I will need three hundred hammers, and that I can finish the work in two months”.
With the previous models also did this type of predictions, but the results did not coincide with the real observations. According to Rooster, “this is, partly, because the machines begin to record the data in real time from the year 2000. In the past the machines did not collect so many data and did essays of laboratory. But to the not having so many real data, the models were not so reliable”.
Rooster has developed besides a software that contributes to the pilot information of the resistance of the rock. The software processes the data that collects the machine, applies the model, and offers to the pilot information on the resistance of the terrain, in real time.
On the other hand, the model can be a great help for the design of new useful, since, supporting in the estimates that gives the model, the manufacturers could test new alloys or modify the mechanisms. And also it will be very useful for the companies constructors, to have a more reliable equation with which can estimate the performance of excavation and carry the control of quality of the process of excavation.
