1. Tuj lub hnab ntawm cov khoom lag luam
Vim tias cov khoom lag luam thiab cov nqi tsim teeb meem, 6 billion lub hnab ntim khoom lag luam tau siv rau pob zeb ntim hauv Suav teb txhua xyoo, suav txog ntau dua 85% ntawm kev lag luam pob ntim. Nrog txoj kev txhim kho, tsim thiab daim ntawv thov ntawm cov hnab ntim tau yooj yim, lub hnab yas siv lub tshuab khi lub hnab ntim cov hnab ntim tau yog siv rau kev thauj dej thiab txoj kev mus rau pob khoom lag luam. Hauv kev ntim cov khoom ntim qoob loo, lub hnab ntim tau ntev ntev tau siv rau cov ntim khoom noj, ntim cov khoom noj khoom haus tshaj tawm cov khoom noj khoom haus, npog cov ntaub ntawv nyoos rau cov nroj tsuag yug me nyuam, ntxoov ntxoo rau cov qoob loo cog qoob loo, cua tsis kam, vaj tse, thiab lwm yam ntaub ntawv nyoos, thoob ntiaj teb cov khoom lag luam hauv tons hnab : concentrated pub ntim hnab, tshuaj cog cog hnab hnab, sab hauv phab ntsa putty hmoov ntim hnab, urea kua ntim hnab, zaub netting qhov muag-tshem hnab, txiv hmab txiv ntoo netting qhov muag-tshem hnab, thiab lwm yam.
2. Lub hnab ntim khoom
Cov nplej, hmoov nplej thiab lwm cov zaub mov ntim tau maj mam siv rau hauv hnab ntim khoom. Lub hnab ntim khoom siv feem ntau yog: lub hnab ntim hnab ntim nplej, hnab nplej ntim ntawv ntim pob nplej, pob kws nplej ntim ntim hnab thiab lwm lub hnab ntim khoom.
3. Kev caij tsheb thauj mus ncig ua si caij so
Hauv kev tsim kho ntawm kev ncig teb chaws, tsev pheebsuab sab nraum zoov ib ntus, hnub ci kaus, ntau lub hnab mus ncig, hnab mus ncig, thiab ntaub yas ua ke siv ntau. Ntau hom khaub hlab ntuag siv dav dav siv rau kev thauj mus los thiab kev ntim cov khoom npog, hloov chaw ua kom yooj yim rau pwm kev loj hlob. Hnyav cov paj rwb uas tsis tuaj yeem ua cov ntaub, laj kab nets ntawm cov chaw tsim kho, thiab lwm yam kuj tseem siv dav hauv cov xov paj yas. Cov khoom siv dav dav siv yog: lub hnab ntim khoom siv, tsheb thauj khoom siv lub hnab ntim khoom, lub hnab ntim khoom siv, thauj cov khoom thauj, hnab ntim khoom, hnab nqa khoom.
4. Cov khoom siv kev tsim kho
Txij li thaum txoj kev txhim kho thiab kev tsim ntawm cov tsis-woven geotextiles nyob rau xyoo 1980, cov kev siv tseem ceeb ntawm cov ntaub yas ua ke tau dav dav thiab feem ntau siv los ua cov dej txuag hluav taws xob me, cov phiaj xwm hluav taws xob, txoj kev tsheb ciav hlau, txoj kev tsheb nqaj hlau, chaw nres nkoj thiab mine kev nqis peev, thiab siv tsheb. Hauv qhov no Hauv ntau cov haujlwm tsim ua vaj tse, cov khoom siv geocomposite muaj cov haujlwm ntawm kev lim cov kav dej, txhim kho kev tiv thaiv, thiab txheej txheej dej tsis ua haujlwm. Yas tsis-woven geotextiles yog ib qho ntawm cov cim ntawm geosynthetics.
