Ntuj pob zeb feem ntau muab faib ua peb pawg: marble, granite, thiab slate.
Marble yog lub pob zeb metamorphic muab tau los ntawm limestone, uas muaj cov xim zoo nkauj thiab ci ntsa iab, feem ntau pom ntau yam huab- zoo li cov qauv. Txawm li cas los xij, nws qhov tsis zoo yog qhov ntev ntev ntawm lub hnub ci thiab nag tuaj yeem npub nws ci, ua rau nws tsuas yog siv rau kev kho kom zoo nkauj sab hauv tsev.
Granite yog tsim los ntawm volcanic eruptions thiab belongs rau igneous pob zeb. Nws muaj qhov ntxhib - cov qauv nplej thiab tuaj yeem tuav nws cov luster ntev ntev thaum siv sab nraum zoov. Feem ntau cov tsev siab - kawg yog dai kom zoo nkauj nrog granite ntawm lawv cov phab ntsa sab nrauv.
Slate belongs rau cov pob zeb sedimentary thiab tsis tas yuav tsum tau ua tshwj xeeb tom qab mining los ntawm lub roob, yog li nws yog pheej yig thiab yuav siv tau raws li lub ru tsev vuas, pem teb, thiab phab ntsa, tab sis feem ntau tsuas yog rau kho kom zoo nkauj thiab tsis rau loj -scale siv.
Xaiv lub pob zeb tuaj yeem txav los ntawm cov hauv qab no:
1.Marble lossis granite yuav tsum raug xaiv raws li qhov xav tau siv. Piv txwv li, sab nraum zoov hauv pem teb tsuas yog ua los ntawm granite, thaum chav nyob pem teb yog zoo dua los ntawm marble vim nws cov qauv ci, nplua nuj xim, thiab yooj yim txuam nrog rooj tog ntawm ntau yam xim.
2. Xaiv hom pob zeb raws li xim ntawm rooj tog thiab ntaub, vim txhua hom marble lossis granite muaj nws cov qauv thiab xim tshwj xeeb.
3.Tom qab kev kho kom zoo nkauj pob zeb, nws yog ib qho tsim nyog yuav tsum siv cov tshuaj tiv thaiv tshwj xeeb kom nthuav tawm nws cov ntsiab lus thiab kav ntev li tshiab.
