基于改进PCA与有序多分类Logistic的充填管道磨损风险评估
王石,汤艺,冯萧

Risk Assessment of Filling Pipeline Wearing Based on Improved PCA and Ordered Multi-class Logistic
Shi WANG,Yi TANG,Xiao FENG
表1 定量指标评估等级取值范围
Table 1 Range of values for quantitative indicator evaluation level
磨损等级充填料浆体积分数/%充填料浆密度/(t·m-3)粗颗粒占比/%管道内径/mm管道铺设不平整度/%管道绝对糙度/μm充填倍线料浆流速与临界流速之比管道使用年限/a
I1<30I2<1.5I3<20I4>200I5<1.0I6≤100I7≥7.0I8<1.0I10<2
30≤I1<401.5≤I2<1.720≤I3<40150< I4≤2001.0≤I5<3.0I6≤1005.0≤I7<7.01.0≤I8<1.22≤I10<5
40≤I1<501.7≤I2<1.940≤I3<60100< I4≤1503.0≤I5<5.0300≤I6<5003.0≤I7<5.01.2≤I8<1.55≤I10<10
I1≥50I2≥1.9I3≥60I4≤100I5≥5.0I6≥5001.0≤I7<3.0I8≥1.5I10≥10