基于改进PCA与有序多分类Logistic的充填管道磨损风险评估
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王石,汤艺,冯萧
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Risk Assessment of Filling Pipeline Wearing Based on Improved PCA and Ordered Multi-class Logistic
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Shi WANG,Yi TANG,Xiao FENG
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表1 定量指标评估等级取值范围
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Table 1 Range of values for quantitative indicator evaluation level
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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 |
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Ⅰ | I1<30 | I2<1.5 | I3<20 | I4>200 | I5<1.0 | I6≤100 | I7≥7.0 | I8<1.0 | I10<2 | Ⅱ | 30≤I1<40 | 1.5≤I2<1.7 | 20≤I3<40 | 150< I4≤200 | 1.0≤I5<3.0 | I6≤100 | 5.0≤I7<7.0 | 1.0≤I8<1.2 | 2≤I10<5 | Ⅲ | 40≤I1<50 | 1.7≤I2<1.9 | 40≤I3<60 | 100< I4≤150 | 3.0≤I5<5.0 | 300≤I6<500 | 3.0≤I7<5.0 | 1.2≤I8<1.5 | 5≤I10<10 | Ⅳ | I1≥50 | I2≥1.9 | I3≥60 | I4≤100 | I5≥5.0 | I6≥500 | 1.0≤I7<3.0 | I8≥1.5 | I10≥10 |
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