HARDING PRIZE COMPETITION 2023 | BTS


Excavation time prediction vs actual


20.0 17.5 15.0 12.5 10.0 7.5 5.0


2300 2400 2500 Ring No. 2600 2700


Prediction Actual Previous


16 14 12 10 8 6 4


2800 2300 2400 2500 Ring No. Above, figure 4: Neural network predictions for Excavation Time (left) and with a rolling average of 20 (right) 2600 2700


RA 20 excavation time prediction vs actual


Prediction Actual Previous


2800


Excavation rate prediction vs actual 250 200 150 100 50 2300 2400 2500 Ring No. 2600 2700 2800 2300 2400 2500 Ring No. Above, figure 5: Neural network predictions for EPB (left) and with a rolling average of 20 (right) 2600 2700 2800


Prediction Actual Previous


250 225


200 175 150 125


100 75


Excavation rate prediction vs actual


Prediction Actual Previous


EPB prediction vs actual


1.0 1.2


0.8 0.6 0.4 0.2 0.0


2300 2400 2500 Ring No. 2600 2700 2800


Prediction Actual Previous


RA 20 Excavation time prediction vs actual 0.8 0.6 0.4 0.2


Prediction Actual Previous


2300


2400


2500 Ring No. Above, figure 6: Neural network predictions for Average Excavation Rate (left) and with a rolling average of 20 (right) August 2023 | 37


2600


2700


2800


Av. EPB (bar)


Av. excavation rate


Excavation time (minutes)


Av. excavation time (mins)


Av. excavation rate


Av. excavation time (minutes)


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