Granite Crushed Pob Zeb (41 Duab): 5-20 Mm, 40-70 Mm Thiab Lwm Yam Feem, Pob Zeb Tsoo Thiab Qhov Hnyav 1 M3, Liab Thiab Lwm Yam Pob Zeb Tawg Los Ntawm Granite, GOST

Cov txheej txheem:

Video: Granite Crushed Pob Zeb (41 Duab): 5-20 Mm, 40-70 Mm Thiab Lwm Yam Feem, Pob Zeb Tsoo Thiab Qhov Hnyav 1 M3, Liab Thiab Lwm Yam Pob Zeb Tawg Los Ntawm Granite, GOST

Video: Granite Crushed Pob Zeb (41 Duab): 5-20 Mm, 40-70 Mm Thiab Lwm Yam Feem, Pob Zeb Tsoo Thiab Qhov Hnyav 1 M3, Liab Thiab Lwm Yam Pob Zeb Tawg Los Ntawm Granite, GOST
Video: Xov xwm 21/10/2021 Tuag 2 Tug Nai Pha, Tub Rog Tuag Coob Ntau Caum Leej 2024, Tej zaum
Granite Crushed Pob Zeb (41 Duab): 5-20 Mm, 40-70 Mm Thiab Lwm Yam Feem, Pob Zeb Tsoo Thiab Qhov Hnyav 1 M3, Liab Thiab Lwm Yam Pob Zeb Tawg Los Ntawm Granite, GOST
Granite Crushed Pob Zeb (41 Duab): 5-20 Mm, 40-70 Mm Thiab Lwm Yam Feem, Pob Zeb Tsoo Thiab Qhov Hnyav 1 M3, Liab Thiab Lwm Yam Pob Zeb Tawg Los Ntawm Granite, GOST
Anonim

Granite crushed pob zeb yog hom khoom siv ntau tshaj plaws hauv tsev, nws tau los ntawm pob zeb volcanic, uas tau nce lub zog thiab muaj cov qauv txheej txheem. Qhov ntxoov ntxoo tuaj yeem yuav luag txhua qhov, nws txhua yam nyob ntawm qhov muaj pes tsawg leeg. Ntuj granite yog qhov tshwj xeeb tshaj yog cov pob zeb ruaj khov thiab tawv.

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Pros thiab cons

Cov txiaj ntsig ntawm Granite

  • Ua kom muaj zog thiab tawv - cov pob zeb ntuj no muaj qhov zoo tshaj coefficient.
  • Yooj yim ntawm kev ua, raws li nws cuam tshuam zoo nrog ntau yam khoom siv nplaum.
  • Tswv yim - haum rau siv hauv ntau yam haujlwm thiab kev lag luam.
  • Qhov tshwm sim - granite tsoo pob zeb zoo li pob zeb nrog ntau yam xim dub, txho thiab xim dawb, xws li cov xim tshwj xeeb feem ntau siv rau kev ua haujlwm zoo nkauj.
  • Kev nqus dej tsawg - cov cuab yeej no ua lub luag haujlwm tseem ceeb hauv kev tsim, vim granite yuav tsis deform los ntawm ya raws.
  • Frost tsis kam.
  • Ua tau ntev.
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Cons ntawm granite

  • Tsis zoo li dolomite crushed pob zeb, coefficient ntawm hardness thiab lub zog uas zoo ib yam rau granite, qhov thib ob muaj tus nqi siab dua. Qhov no yog qhov tsis zoo tseem ceeb ntawm cov khoom siv.
  • Cov txheej txheem tsim khoom hnyav, yuav tsum tau ua cov kauj ruam ntxiv tom qab rho tawm los ntawm chaw txua txiag zeb.
  • Kev phooj ywg ib puag ncig - cov pob zeb tsoo pob zeb tuaj yeem muaj cov khoom tsis zoo, sib piv rau cov limestone, uas muaj qib qis dua ntawm cov xov tooj cua, txawm tias qhov tseeb tias ob lub pob zeb yog keeb kwm ntuj tsim los. Xaiv cov pob zeb tawg tshwj xeeb, koj yuav tsum tau saib los ntawm daim ntawv pov thawj thiab xaiv 1 chav kawm ntawm cov khoom siv hluav taws xob, nws zoo dua tsis txhob siv ntau yam granite hauv kev tsim cov tsev nyob.
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Cov yam ntxwv rho tawm

Hauv kev hais lus sib tham, xws li kev qhia xws li "pob zeb tsoo pob zeb" feem ntau siv - qhov no tsis yog qhov tseeb tag nrho, qhov tseeb, pob zeb tawg yog tau los ntawm cov txheej txheem dag. Tsuas yog pob zeb tsuas yog khawb - qhov no yog thawj cov khoom siv raw. Cov khoom siv nws tus kheej yog tsim los siv cov khoom sib tsoo thiab tshuaj ntsuam.

Tus txheej txheem nws tus kheej muaj peb theem - qhov no yog qhov rho tawm ntawm cov khoom siv, sib tsoo, txheeb cais.

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Kev yug menyuam

Cov neeg tsim cov pob zeb tsoo siv cov khoom sib txawv - granite, marble, limestone, thiab lwm yam., Nyob ntawm seb yam khoom twg koj xav tau thaum kawg. Granite crushed pob zeb yog tsim los ntawm ntau pua -xyoo pua hluav taws xob (cov hluav taws) cov khoom - khov magma. Ua ntej pib ua haujlwm, npaj chaw txua txiag zeb - txheej txheej saum toj kawg nkaus ntawm cov av nrog cov nyom raug tshem tawm, tom qab ntawd txheej txheej saum toj ntawm av. Cov nplais pob zeb tau muab rho tawm hauv av siv cov khoom tawg thiab thev naus laus zis, yog tias tsim nyog, lawv tau muab faib ua me me.

Kev tsim cov pob zeb tawg tuaj yeem raug tsom lossis los ntawm cov khoom lag luam. Thaum tsim ua thawj txoj hauv kev, cov khoom siv yuav zoo dua thiab raug nqi. Hauv qhov xwm txheej thib ob, pob zeb tawg yog cov khoom tau txais thaum lub sijhawm rho tawm ntawm cov zaub mov lossis hauv kev tsim cov khoom lag luam. Kev tshem tawm pob zeb tuaj yeem ua tiav plaub txoj hauv kev.

Txiav pob zeb - txoj kev no yog tus nqi kim tshaj plaws, tab sis tib lub sijhawm ib qho uas ua tau zoo tshaj plaws. Nrog kev pab ntawm pob zeb txiav cov cuab yeej, cov blocks loj tau txiav tawm tam sim ntawd hauv chaw txua txiag zeb. Cov tshuab tau nruab nrog xaim saw lossis disc pom nrog pob zeb diamond cov lus qhia. Thaum ua haujlwm zoo li no, cov pob tau txais los ntawm qhov xav tau thiab qhov loj me, microcracks tsis tsim rau lawv.

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Buroklinova - txoj kev no yog ib qho ntawm qhov qub tshaj plaws thiab tam sim no nws tau siv tsawg heev. Ntawm no, kev ua haujlwm pib nrog tus qauv ntawm lub thaiv, tom qab ntawd cov qhov dej tau nqus nrog cov cim no. Cov pegs tshwj xeeb tau muab tso rau hauv lawv, raws li qhov cuam tshuam uas qhov thaiv tau sib cais raws txoj kab kev txiav txim siab ua ntej. Cov pob zeb nyuaj tshaj plaws feem ntau yog siv cov txheej txheem no. Qhov tsis zoo ntawm qhov thev naus laus zis no tsuas yog tsim rau cov pob zeb me me xwb.

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Burohydrokline Yog ib qho cuab yeej siv siab tshaj borocline. Kev khawb av tau raws li txoj phiaj xwm zoo ib yam, tab sis cov hlau hlau tau hloov pauv cov npoo npoo av. Lawv tau ntim nrog dej, uas yog nyob rau hauv siab, thiab nthuav dav nthuav dav hauv qhov drilled qhov. Txoj hauv kev no tuaj yeem siv los tshem cov pob zeb ntawm qhov loj me me, hauv qhov chaw tsis tuaj yeem nkag mus tau. Qhov txiaj ntsig zoo ntawm cov xim av hydro-wedge thev naus laus zis yog qhov ua tsis tiav ntawm lub suab nrov thiab kev co, yog li cov qauv ntawm pob zeb tau khaws cia ntau li ntau tau.

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Drilling thiab blasting (tawg) - txoj hauv kev no yog qhov nrov tshaj plaws ob qho tib si hauv kev rho tawm pob zeb thiab hauv kev rho tawm cov ore. Cov qhov kuj tau muab hlais hauv pob zeb, thiab cov khoom tawg tau muab tso rau hauv. Qhov tawg tawg ntau daim ntawm cov pob zeb, qhov loj tshaj plaws tau sau thiab tshem tawm mus rau kev ua.

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Txoj kev no yuav tsum muaj qhov tseeb ntau dua ntawm kev suav, ib qho yuam kev ua rau nce tus nqi . Qhov loj ntawm cov khoom tawg yuav ua rau pob zeb tawg, nrog qhov tsis muaj cov khoom tawg, ntawm qhov tsis sib xws, cov khoom yuav tig mus ua qhov loj heev, lawv yuav tsum tau muab faib dua.

Txoj hauv kev ua kom tawg thiab tawg yog qhov kev lag luam yooj yim tshaj plaws thiab tib lub sijhawm ua kev puas tsuaj tshaj plaws, txij li thaum tawg tsuas yog 70% ntawm pob zeb tseem tsim nyog rau kev ua ntxiv, thaum seem 30% mus rau kev tshuaj xyuas.

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Sib cais

Tom qab ntawd cov pob zeb tau thauj mus rau hauv cov tsheb thauj khoom thiab coj mus rau cov txheej txheem hauv cov bunkers. Los ntawm lawv, cov ntaub ntawv raug xa mus rau tus neeg pub khoom noj (cov cuab yeej tshwj xeeb, ua tsaug uas cov khoom siv raw tau tshwm sim sib npaug). Thawj qhov loj ntawm lub pob zeb ncav cuag 50 - 120 centimeters, thiab qhov loj ntawm cov khoom tiav yuav tsum yog 0.5 - 12 centimeters . Hauv cov txheej txheem ntawm kev zom, daim tuaj yeem raug txo ntau pua zaug, yog li kev ua haujlwm feem ntau tshwm sim hauv 2 - 4 theem.

Crushing tuaj yeem yog peb hom - loj (txog 30 cm), nruab nrab (txog 10 cm), nplua (txog li 4 cm) . Hauv cov chaw tsim khoom nrog cov cuab yeej siv niaj hnub, cov txheej txheem crushing tshwm sim ib txhij nrog kev txheeb cais. Nyob rau txhua theem, pob zeb hla kev txheeb xyuas ua ntej, thaum pob zeb loj dua tau cais los ntawm cov pob zeb me.

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Yog li, tsuas yog cov pob zeb uas yuav tsum tau muab tsoo kom raug xa mus ntxiv rau hauv cov cuab yeej siv.

Txhawm rau ua haujlwm nrog pob zeb tawg, 6 hom khoom siv zom zaws tau siv

Lub puab tsaig - siv thawj theem ntawm kev sib tsoo . Lawv lub hauv paus ntsiab lus ntawm kev nqis tes ua yog kom tsis txhob poob siab. Cov cuab yeej suav nrog ob lub pob zeb (sab plhu), nruab nrab ntawm cov pob zeb uas tau muab tso rau. Tom qab ntawd lawv pib txav mus rau ib leeg, yog li cov pob zeb tawg.

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Cov menyuam - txoj haujlwm ua haujlwm raws li tib lub system , zoo li hauv lub puab tsaig crushers, tsuas yog siv cov phaj, cov khoom tshwj xeeb tau tsim nyob ntawm no, tig rau hauv cov lus qhia sib txawv. Qhov saum npoo ntawm lub ntsej muag tuaj yeem du, toothed lossis corrugated.

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Conical - siv rau kev sib tsoo granite rau hauv qhov me me thiab nruab nrab qhov ntev . Kev tsim ntawm cov crushers yog qhov nyuaj dua - hauv lub nkoj conical nyob ruaj ruaj muaj lub khob hliav qab txav tau, sab saum toj uas tau hais qhia saum toj. Los ntawm lub qhov taub tshwj xeeb, cov pob zeb tau pub rau hauv lub hav, thiab lub khob hliav qab sib luag, nce mus txog qhov chaw ruaj khov, yog li tsoo pob zeb.

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Teb - lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm cov crushers yog cuam tshuam . Cov cuab yeej zoo li chav, raws cov ntug uas muaj cov phaj tsoo, thiab hauv nruab nrab muaj lub rotor. Beaters (lub xub pwg hniav) tau txuas rau nws. Granite nkag mus rau hauv lub tshuab crushing txiav rau hauv cov phaj cuam tshuam thiab sib. Kev ua haujlwm ntawm cov khoom siv hloov pauv tau txawv los ntawm qib siab ntawm kev xaiv - uas yog, feem ntau ntawm cov pob zeb granite yog lub voos xwmfab (80 - 85%).

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Rauj rauj crushers - kev tsim cov crushers zoo ib yam rau hom yav dhau los , tab sis hloov ntawm cov hniav, hammers ua haujlwm ntawm no. Feem ntau, cov crushers tau siv rau pob zeb mos.

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Centrifugal - lub crusher yog centrifuge , nyob rau hauv uas pob zeb ntawm kev nrawm nrawm tsoo nws cov phab ntsa thiab tawm tsam ib leeg. Cov cuab yeej no raug tso cai ua haujlwm nrog granite txog li 10 centimeters.

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Txheeb cais

Tom qab lub pob zeb tau dhau mus rau theem crushing, nws nkag mus rau hauv kev tshuaj ntsuam vibrating cov ntxaij vab tshaus - cov ntxaij vab tshaus. Lawv tau txais lub npe zoo li lub suab nrov thaum ua haujlwm. Sorting tuaj yeem zoo li no.

  • Ua ntej - ntawm no pob zeb uas tsis xav tau kev sib tsoo yog sib cais, thiab tsis zoo, nws tau ua tiav ua ntej txheej txheem zom zaws.
  • Kev tswj - ua tom qab tsoo. Cov txheej txheem cais cov granite, uas yuav tsum tau rov ua dua.
  • Khoom noj khoom haus - hom kev txheeb xyuas, pob zeb tawg ua ntej dhau los npaj rau muag.
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Cov yam ntxwv tseem ceeb

  • Flakiness - qib ntawm lub dav hlau granite, tus yam ntxwv yog txiav txim siab los ntawm qhov muaj nyob hauv pob zeb qauv ntawm kev suav nrog hauv daim ntawv ntawm koob thiab daim hlau. Kev nplaum rau ntau yam tshuaj yuav nyob ntawm seb cov pob zeb tawg. Qhov qis dua qhov tsis zoo coefficient qhia tau tias zoo ntawm granite.
  • Lub zog - tus yam ntxwv raug coj mus rau hauv tus account thaum txhim kho cov tsev tag nrho. Thaum cov pob zeb tawg tau raug zuaj, nws lub zog kawg tau pom. Raws li cov qauv ntawm GOST tam sim no, feem pua ntawm cov pob zeb nrog lub zog tsawg kawg yuav tsum tsis txhob siab tshaj 5 units.
  • Tej ntom ntom - tus yam ntxwv txiav txim siab qhov nqus tshwj xeeb ntawm 1 m3 hauv lub xeev ntuj, uas yog, qhov khoob thiab qhov hws nruab nrab ntawm cov khoom raug coj mus rau hauv tus account. Ntau npaum li cas cov khoom hnyav ncaj qha nyob ntawm nws. Txhawm rau paub seb muaj pes tsawg tons ntawm cov pob zeb tawg hauv ib lub voos xwmfab, koj yuav tsum faib 1 tuj (1000 kg) los ntawm qhov sib txuam ua ke ntau. Ntau tus neeg tsim khoom ntim pob zeb tawg hauv hnab 25, 30, 35, 40, 42, 45, 50, 55, 60 litres. Txhawm rau paub seb muaj pes tsawg lub hnab pob zeb tawg hauv lub voos xwmfab, koj tuaj yeem siv cov rooj tshwj xeeb. Cov cuab yeej no txiav txim siab yuav khaws cov khoom thiab thauj mus los li cas, thiab yuav tsum tau sib xyaw cov cement ntau npaum li cas thaum tsim kho. Qhov ntau dua qhov ntom ntom ntom ntom ntom ntom, xav tau tshuaj khib tsawg dua.
  • Frost tsis kam - cov khoom ntiag tug muaj pes tsawg defrosts thiab khov lub pob zeb tawg tuaj yeem tiv taus. Nws tau cim nrog tsab ntawv "F", thiab tus lej nyob ib sab ntawm nws qhia txog qhov khov / thaw rov ua dua - F15, 25, 50, 100, 150, 200, 300, 400.
  • Xov tooj cua - coj mus rau hauv tus account thaum xaiv tus muag khoom ntawm cov khoom. Cov pob zeb tsoo yog qhov chaw ntawm hluav taws xob; ntxiv rau, nws tuaj yeem khaws nws. Cov pob zeb tawg tau muab faib ua 3 pawg: 1 - tsawg dua 370 Bq / kg - rau kev tsim vaj tsev nyob thiab thaj chaw tsis nyob hauv tsev; 2 - 370 - 740 Bq / kg - rau txoj kev tsheb thiab lub hauv paus ntawm cov chaw tsim khoom; 3 - ntau dua 740 Bq / kg - tso cai rau txoj kev loj xwb.
  • Adhesion - Qhov no yog qhov taw qhia ntawm yuav ua li cas nruj nreem pob zeb tawg tau ua raws ntau yam tshuaj. Qhov siab tshaj plaws ntawm cov tsiaj yog grey.
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Hom thiab hom

Muaj tsib ntau yam hauv tag nrho

  • 001200 - 1400 - siab zog.
  • М800 - 1200 - pob zeb tawg tau ruaj khov.
  • --600 - 800 - lub zog nruab nrab.
  • --300 - 600 - lub zog tsis muaj zog.
  • M200 - lub zog tsis muaj zog heev.

Qhov ntxoov ntxoo ntawm granite nyob ntawm thaj chaw uas cov khoom siv hluav taws kub tau raug khawb. Nws tuaj yeem yog dawb, txho, paj yeeb, liab, thiab lwm yam.

Cov xim palette tau txiav txim siab los ntawm kev nplua nuj ntawm kev suav nrog hauv cov qauv ntawm cov pob zeb granite.

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Ntawm cov chaw tsim khoom, pob zeb tawg tau raug ua ntxiv

  • Yaug - yog qhov tsim nyog los tu cov khoom los ntawm hmoov av thiab av nplaum. Qhov xav tau rau yaug tshwm sim tsuas yog tias qhov tso cai pom tau tias muaj cov av nplaum thiab cov hmoov av ntau dhau. Cov txheej txheem ntxuav yog siv zog heev thiab kim; Ntxiv mus, yuav tsum tau ziab cov khoom ntxiv. Ntxuav cov pob zeb uas tau tsoo lawm tsis tshua muaj neeg ua thiab tsuas yog siv rau lub hom phiaj tshwj xeeb.
  • Bitumen impregnation - pob zeb tawg nrog txoj kev kho no yog siv hauv kev tsim kho, nws tau npog nrog cov roj av, bitumen lossis mortar mortar. Cov txheej txheem tshwm sim hauv cov khoom siv asphalt sib xyaw. Bituminous lossis dub zeb zeb tsis tuaj yeem khaws tau ntev, vim tias nws lub neej muaj txiaj ntsig yog luv, feem ntau nws tau xa tam sim ntawd mus rau qhov chaw ua haujlwm.
  • Dyeing - kev ua haujlwm zoo li no tsuas yog siv rau lub hom phiaj zoo nkauj. Granite tuaj yeem ua xim rau hauv cov chaw tsim khoom lossis hauv tsev. Xim pob zeb tawg yog tsim los ntawm kev xaj ua ntej thiab hauv cov khoom me me. Hauv qhov no, nws tsim nyog nco ntsoov tias txawm tias qhov zoo tshaj plaws zas xim yuav ploj lossis pib nti ib ntus.
  • Sib tsoo (tumbling) - xws li granite kuj tseem siv hauv kev ua haujlwm zoo nkauj. Tumbled crushed pob zeb yog cov khoom siv uas tau ua tiav cov tshuab kev nyuab siab, vim qhov uas cov npoo ntse tau du. Kev ua tiav yuav tshwm sim hauv lub nruas nchav, qhov twg yog lub pob zeb ntuj, cov tshuaj txhuam hniav thiab dej tso rau. Vim yog kev sib txhuam ntawm ib leeg thiab tiv thaiv abrasives, cov txheej txheem sib tsoo yuav siv qhov chaw.

Tumbling yog txheej txheem kim dua, yog li cov pob zeb tawg tawg yog ua los ntawm kev txiav txim ua ntej.

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Pawg neeg saib xyuas

Ib qho ntawm cov yam ntxwv tseem ceeb tshaj plaws ntawm cov pob zeb tawg yog nws qhov kev faib ua feem, nws tau muab tso rau theem ntawm kev rho tawm, thiab tom qab ntawd nyob rau theem ntawm kev ua cov granite. Muab faib ua pawg.

Los ntawm 0 txog 10 hli - ShchPS (sib tsoo pob zeb -xuab zeb sib xyaw) , cov muaj pes tsawg leeg muaj cov khoom xws li xuab zeb thiab pob zeb tawg. Raws li GOST, cov khoom lag luam muaj lawv tus kheej kev faib tawm granulometric, feem, muaj ob peb hom xuab zeb-sib tsoo pob zeb sib xyaw. Zoo heev li txheej txheej dej, siv rau txoj kev asphalting.

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Los ntawm 5 txog 10 hli - nplua granite . Cov khoom lag luam tau txawv los ntawm lawv qhov ua tau ntev thiab cov nqi pheej yig. Nws yog siv rau kev tsim cov khoom sib xyaw ua ke siv hauv kev ua haujlwm nrog cov khoom hnyav thiab hnyav.

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5 txog 20 hli yog ob qib me me sib xyaw ua ke . Zoo tagnrho rau kev tso lub hauv paus ntawm lub tsev.

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20 txog 40 hli - Nruab Nrab Granite , cov khoom siv pom nws lub hom phiaj hauv kev sau cov hauv paus ntawm cov tsev nyob, thaj chaw tsim khoom, asphalting, tso kab tsheb ciav hlau.

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Los ntawm 40 txog 70 hli-lub zog loj-loj loj pob zeb granite . Lawv tau siv rau ntawm qhov chaw tsim khoom ntawm cov khoom loj.

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70 txog 120 hli, 150 txog 300 hli - granite ntawm cov qauv loj loj nrog cov duab tsis xwm yeem. GOST rau pawg no tau pleev xim rau hauv cov rooj tshwj xeeb uas siv hauv kev tsim kho cov choj thiab cov pas dej. Vim nws lub zog nce ntxiv, nws tau siv thaum tso cov pob zeb tawg ua lub hauv paus.

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Tawm Tawm

Ib feem ntawm 0 txog 5 hli lossis cov pob zeb granite - pawg no yog qhov tsawg tshaj plaws, nws zoo li cov khoom siv thib ob lossis sab. Cov tsos ntawm qhov kev tshuaj ntsuam zoo ib yam li cov xuab zeb, tab sis nrog cov khoom ntawm granite.

Nws tau siv hauv kev npaj taug kev taug kev, txoj kev taug kev, chaw ua si.

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Cov ntawv thov

Thawj lub hom phiaj ntawm cov pob zeb tawg yog cov khoom siv hauv tsev. Tab sis vim muaj ntau hom tsiaj, nws tau siv rau ntau lub hom phiaj thiab kev ua haujlwm - los ntawm kev rov tsim kho cov choj kom rov ua dua tshiab.

  1. Hauv kev tsim kho - txhawm rau tsim cov pob zeb, txheej txheej kua dej, rau kev faib ua qhov me me, ntxiv dag zog rau cov av hauv qab lub hauv paus ntawm cov tsev, rau kev ua kom tau thaj av thiab thaj chaw.
  2. Hauv txoj haujlwm ua haujlwm - rau av, asphalt thiab kev tsheb nqaj hlau.
  3. Kev txhim kho av - rau txoj hauv kev thiab txoj hauv kev, nkag mus rau hauv thaj av, kev sib xyaw av, pov tseg cov chaw nres tsheb thiab thaj chaw kis las, tiv thaiv dej khov thiab dej khov.
  4. Rau kev tsim toj roob hauv pes - kho kom zoo nkauj ntawm lub txaj paj, dej ntws, lub cev dej dag, gabions thiab alpine swb.
  5. Hauv kev tsim khoom - rau paving pob zeb thiab txhawb cov khoom siv ua vaj tsev, cov tshuaj ntxhia ntau.
  6. Kev ua haujlwm engineering - rau cov choj, cov pas dej thiab cov pas dej, hla dhau.

Pom zoo: