Data Analysis and Knowledge Mining of Machine Learning in Soil Corrosion Factors of the Pipeline Safety

Table 2

The classification interval table of the soil corrosion index factors.

Classification model	Soil resistivity ()	Reddox potential (mV)	Chloride ion content (%)	Sulfuric acid root ion content (%)	Water content (%)	pH value	Average corrosion rate ()
J1	>300	>500	<0.01	<0.009	<3	>8.5	<1
J2	[60, 300]	[300, 500]	[0.01, 0.075]	[0.009, 0.06]	[3, 8.5) and >35	[6.25, 8.5]	[1, 4]
J3	[5, 60)	[100, 300)	[0.075, 0.75)	(0.06, 0.65]	[8.5, 12) and [25, 35)	[4.5, 6.25)	(4, 7]
J4	<5	<100	>0.75	>0.65	[12, 25)	<4.5	>7