Kev sib piv ntawm cov yam ntxwv ntawm kauv duct tshuab thiab tsoos duab plaub duct

1. Nyob rau hauv ib puag ncig thiab tej yam kev mob, nws tuaj yeem hloov kho los ntawm cov pa qis qis mus rau cov pa hluav taws xob siab. Cov txheej txheem tsim tuaj yeem txo tag nrho cov pa ducts, uas tsis yog kev lag luam xwb, tab sis kuj txuag chaw.

2. Raws li cov xwm txheej zoo ib yam, cov khoom siv ua haujlwm puv puv (cov yawm sij dai, thiab lwm yam) muaj cov txiaj ntsig tau yooj yim thiab muaj me me, thiab tus nqi ntawm cov khoom siv pabcuam tuaj yeem raug txo los ntawm 20% mus rau 35%.

3. Lub hoisting efficiency thaum lub sij hawm tsim kho yog ob zaug ntawm cov ducts rectangular.

4. Piv nrog rau cov kab hluav taws xob cov kab hluav taws xob ib txwm muaj, cov khoom siv tseem ceeb ntawm cov khoom siv hluav taws xob ntawm cov kav dej yog txo los ntawm 15%, thiab cov phaj tuab yog txo los ntawm 13-17% rau tib txoj kab uas hla. Tus nqi ntawm cov khoom tseem ceeb raug txo.