Geological Type Recognition by Machine Learning on In-Situ Data of EPB Tunnel Boring Machines

Table 5

Statistical properties of main parameters from the selected section of Tianjin Metro Line 3.

	Advance rate	Cylinder thrust	Cutter head torque	Cutter head rotational speed
	(mm/min)	(kN)	(kNm)	(r/min)
Max	39.80	27447.14	1539.93	0.8
Min	18	15511.25	1030.53	0.5
Average	31.53	21198.53	1279.04	0.65
SD	0.53	3814.17	86.89	0.15