Tau siv 20 xyoo ua haujlwm hauv cov pob zeb khoom kim heev, kuv tuaj yeem ntseeg tau tias 90% ntawm cov neeg nyob hauv khw niaj hnub no tsis nkag siab tiag tiag li "khoom kim heev". Ntau tus neeg yuam kev ntseeg tias qhov flashier tus qauv lossis tus nqi siab dua, lub pob zeb zoo dua; qhov no yog, qhov tseeb, yog ib tug loj misconception. Qhov tseeb zoo ntawm lub pob zeb khoom kim heev yog txiav txim siab los ntawm lub sijhawm nws tau muab rho tawm los ntawm nws cov kab mob geological hauv roob. Niaj hnub no, kuv tab tom sib qhia kev nkag siab uas tau yug los ntawm ob xyoo caum ntawm kev quarrying raw blocks - qhov tseeb kuv tau hais lus hammered thiab chiseled tawm kuv tus kheej.
Ua ntej: Tshawb xyuas lub hauv paus chiv keeb ntawm cov leeg -Qhov no yog qhov tseem ceeb.
Cov pob zeb khoom kim heev muaj ntau yam zoo li tib neeg: lawv muaj nuj nqis rau "ntshiab thiab noble caj ces." Txhawm rau txiav txim siab seb qhov thaiv tshwj xeeb yog qhov zoo, koj yuav tsum xub paub tseeb tias nws tau muab rho tawm los ntawm qhov chaw tseem ceeb ntawm lub ntsiab geological vein lossis tsuas yog cobbled ua ke los ntawm cov chaw khib nyiab peripheral. Lub hauv paus cheeb tsam -forged los ntawm ntau lab xyoo ntawm geological compression-yields textures nrog unmatched stability thiab purity. Hloov pauv, cov blocks excavated los ntawm fringes, theem nrab cheeb tsam, los yog tailing pawg-txawm li cas flashy lawv nto qauv los yog jarring lawv cov xim yuav tshwm sim-yuav, cuaj zaug ntawm kaum, tig tawm mus ua tsis muaj nqis slabs ib zaug txiav qhib. They will either be riddled with a "starry sky" of micro-cracks or possess a density so loose and crumbly that even professional polishing cannot salvage them. Nyob rau hauv peb tus kheej quarrying lag luam, peb nruj me ntsis sau cov blocks los ntawm cov tub ntxhais cheeb tsam raws li hwm Tshuag, thaum lub peripheral scraps yog tam sim ntawd muab pov tseg; peb yeej tsis muab ob qho tib si rau muag.
Thib ob: Txheeb xyuas qhov kev ntxhib los mos-Nws tsis yog hais txog "Ua haujlwm," tab sis hais txog kev ua "Txoj Cai."
Novices tsuas yog saib lub spectacle; cov kws txawj pom cov khoom. Cov ntaub ntawv tshwj xeeb tiag tiag yog cov kua dej, sib xyaw ua ke, thiab sib xyaw ua ke -zoo li "dej ntws thiab huab cua ntws" uas tau piav qhia hauv cov duab suav suav sau ua luam dej- tshwm sim raws li ib leeg, seamless muaj pes tsawg leeg. Muaj ob hom kev ntxhib los mos uas yuav tsum tau ceev faj: ua ntej, "cov hlab ntsha tawg," qhov twg tus qauv txiav tawm sai sai rau nruab nrab- ntws, zoo li lub voj voog luv; thib ob, "dub los yog 杂斑" (txhua yam blotches)- grimy, smeared thaj ua rau thaj uas tam sim muab lub pob zeb pheej yig, tsis zoo. Cov ntaub ntawv hwm zoo ua raws li lub hauv paus ntsiab lus ntawm "Kev pib, kev loj hlob, kev hloov pauv, thiab kev daws teeb meem"- txhais tau hais tias txawm tias cov qauv tsis zoo tshaj plaws muaj qhov kev xav sab hauv. Yog tias koj ntsib cov slabs qhov twg cov qauv tau txhob txwm txiav mus rau hauv cov khoom tsis sib xws-feem ntau yog ib qho kev ua kom zais qhov tsis zoo hauv qab- tig mus thiab taug kev tsis muaj kev cuam tshuam.
Third: Assess the Intrinsic Density-It Must Be Solid, Impermeable, and Crack-Resistant.
Ntau tus neeg laypes cia siab rau qhov kev ntsuam xyuas sab nraud nkaus xwb-xws li khawb qhov chaw nrog tus yuam sij lossis saib seb cov tee dej coj li cas-tab sis cov no tsuas yog kuaj xyuas rov qab xwb. Qhov tseeb qhia ntawm seb lub pob zeb puas tuaj yeem tiv taus qhov kev sim ntawm lub sijhawm- yam tsis muaj teeb meem tshwm sim- nyob rau hauv seb nws qhov ntom puas txaus "compact thiab solid." Siab- pob zeb zoo nkauj zoo nkauj zoo nkauj thiab hnyav ntawm tes, thiab tus ntiv tes gliding hla nws ua rau lub suab nrov nrov; Cov khoom siv tsis zoo xav tias lub teeb thiab flimsy, thiab tapping nws yields dull, muffled thud. When we inspect a raw block at our quarry, we immediately apply water to it-material lacking sufficient density absorbs the water the moment it is splashed on, leaving behind uneven dark and light patches; Thaum lub sij hawm, qhov no inevitably ua rau efflorescence thiab yellowing. Peb kuj tseem ua kom khov-thaw thiab flexural zog kuaj: lub pob zeb yog khov ib hmos ntawm sub- xoom kub thiab ces tsau rau hauv dej kub kom nws tsis txhob tawg los yog crumbles; Tom qab ntawd, thaum raug hydraulic siab, lub slab tseem tsis muaj zog kiag li. Cov khoom zoo li no yuav tsis deform txawm tias tom qab ntau xyoo ntawm kev siv; raws li chav ua noj countertop, nws tso cai rau nchuav xws li kua ntses kom huv si tam sim ntawd, thaum lub chav dej hauv pem teb, nws tseem tsis yog{13}} plam thiab tawg - dawb txawm tias ntub.
Thib plaub, ntsuas qhov kev ncaj ncees ntawm cov khoom: nws yuav tsum tsis pub muaj qhov sib cais sab hauv thiab muaj peev xwm ua kom muaj zog loj - cov ntawv slabs.
Dab tsi txhais tau tias qhov chaw txua txiag zeb zoo heev? Nws yog ib qho uas txaus siab lim tawm "khoom plig" rau koj txoj cai ntawm qhov chaw. Ua ntej ib qho khoom siv raw yuav thauj mus rau peb cov tshuab ua haujlwm, peb cov neeg ua haujlwm tau soj ntsuam txhua nti ntawm nws nrog lub teeb pom kev siab - siv lub teeb nyem, mloog cov suab nrov nrov kom pom cov kab nrib pleb sab hauv. Ntau cov slabs tiav uas zoo nkaus li zoo nkauj hauv khw, qhov tseeb, tsuas yog "jigsaw puzzles" - cov khoom tawg ua ke siv cov kua nplaum thiab cov resins. Thaum lawv qhov chaw yuav polished kom ci ntsa iab, lawv nti tam sim ntawd thaum kov los ntawm lub kaum sab xis grinder thiab inevitably tsim seams pom nyob rau hauv rau lub hlis ntawm kev teeb tsa hauv tsev. Cov pob zeb zoo nkauj tiag tiag tso cai rau kev txiav cov loj - cov ntawv slabs ntev tshaj li 2.4 meters hauv qhov ntev - tsis muaj cov resin tag -cov kab kho kab los yog cov khoom siv rov qab kho dua tshiab - thiab zoo li pristine nyob rau sab nraub qaum li nws ua rau pem hauv ntej. Txhua qhov thaiv uas nthuav tawm txawm tias me ntsis sab hauv fissure, pinhole, los yog chipped ces kaum yog tam sim ntawd culled ncaj qha rau ntawm qhov chaw txua txiag zeb; peb yuav tsis tso cai rau cov khoom siv tsis zoo no mus txog kev ua lag luam thiab dag peb cov neeg siv khoom.
Thaum kawg, qhov tseeb pedigree ntawm lub pob zeb khoom kim heev tsis yog ib yam khoom ntawm kev lag luam hype; es, nws yog qhov tshwm sim ntawm kaum lab lab xyoo ntawm ntuj tsim nyob rau hauv lub ntiaj teb crust. Thaum nrhiav ib tus neeg muag khoom hauv chaw txua txiag zeb, tsis txhob swayed los ntawm boasts hais txog cov khoom loj loj los yog cov khoom lag luam overflowing; Hloov chaw, nug lawv peb lo lus nug tshwj xeeb: Qhov twg raws nraim yog koj qhov chaw pob zeb hauv av nyob qhov twg? Koj cov ntaub ntawv pov tseg yog dab tsi? Qhov siab tshaj plaws slab ntev npaum li cas uas koj tuaj yeem tsim yam tsis tas yuav tsum muaj cov resin- ua kom tiav? Tsuas yog cov neeg uas tuaj yeem muab cov lus teb meej, tsis meej rau cov lus nug no yog cov uas txaus siab los nqis peev rau cov peev txheej tseem ceeb uas tsim nyog los xa cov khoom tsis zoo.
Cov ntsiab lus saum toj no yog ua raws li tus kheej tus account ntawm ib tug ntev - sawv cev cov neeg siv khoom - ib tug neeg siv ntawm peb lub tuam txhab "Cheefung" hom khoom kim heev pob zeb sib tsoo blocks. Peb cia siab tias cov ntaub ntawv no ua pov thawj muaj txiaj ntsig rau lwm lub chaw ua haujlwm pob zeb ua haujlwm hauv kev tsim cov loj - hom khoom kim heev pob zeb slabs.