Kev Tsim Kho Tshiab Txoj Kev Rail Sleeper Hauv Tsev thiab txawv teb chaws
Thaum lub ntiaj teb kev lag luam loj hlob sai sai, cov teb chaws tau ua kev tshawb fawb dav hauv kev tsim kho tsheb ciav hlau, tshwj xeeb yog tsom rau kev tsim kho vaj tse. Kev tsim kho raws li cov ntoo tsoos thiab cov pob zeb ua kom muaj zog ntxiv, cov kev sib tw tseem ceeb tau ua hauv kev tshawb fawb thiab kev tsim cov ntaub ntawv tshiab pw tsaug zog.
Xyoo 1994, Tebchaws Meskas tau pib tshawb fawb txog cov khoom siv ntoo-yas sib xyaw, siv cov khoom pov tseg polyethylene yas ua cov khoom siv raw. Surface-enhanced wood-yas composite sleepers khaws cov ntoo sab hauv elasticity thaum txhim kho qhov hnav tsis kam thiab ntsia hlau tuav lub zog.
Thaum lub sijhawm xyoo 1990, Voest-Alpine Company los ntawm Australia thiab Sekisui Chemical Company los ntawm Nyij Pooj tau koom tes los tsim ua npuas ncauj polyurethane pw tsaug zog nrog ntev fiberglass. Txawm li cas los xij, kev siv thev naus laus zis yog qhov nyuaj.
Nrog rau kev loj hlob sai ntawm kev lag luam tsheb, kev loj hlob ntawm cov pa phem dub (cov log tsheb pov tseg) ua rau muaj kev hem thawj rau lub ntiaj teb ib puag ncig. Kwv yees li ntawm 1 billion lub log tsheb raug muab pov tseg txhua xyoo thoob ntiaj teb, tsuas yog 15% -20% muaj peev xwm kho dua tshiab. Tuam Tshoj tau pib tshawb fawb los daws qhov teeb meem no.
Cov ntaub ntawv txheeb xyuas qhia txog qhov kev xav tau hloov pauv txhua xyoo rau cov tsheb ciav hlau nyob hauv North America, tam sim no kwv yees li ntawm 12 lab units, nrog kev kwv yees nce mus rau 14-16 lab xyoo tom ntej. Hauv tebchaws Russia, ntau dua 250 lab tus neeg pw tsaug zog xav tau hloov pauv sai. Yog li ntawd, muaj ib qho tseem ceeb thoob ntiaj teb kev thov rau rail sleepers. Kev vam meej ntawm cov khoom tshiab hauv lub npe no cog lus muaj txiaj ntsig zoo ntawm kev lag luam thiab kev sib raug zoo.
