Hydromilling bụ usoro erosion nke mmiri jet nrụgide dị elu nke a na-eji wepụ na ịmepụta ala na nkume dị nro na injinere mgbọrọgwụ omimi. Ọ na-anọchite anya usoro ọgwụgwọ ala dị elu nke na-emepụta mgbidi na mkpuchi n'ịbụ nke na-achịkwa site na mmiri nrụgide, na-enweghị ike mgbawa ma ọ bụ vibration dị arọ. Teknụzụ a bara uru nke ukwuu na mpaghara ndị nwere mmetụta gburugburu, ebe obibi ndị na-ejupụta, na ebe akụrụngwa ọdịnala na-adịghị enwe ike ịnweta ma ọ bụ rụọ ọrụ nke ọma. Hydromilling na-ahụkarị na nrụpụta mgbidi diaphragm, mkpuchi, mgbidi secant, na mkpuchi mmiri ala. N'ọrụ ndozi ebe a na-emepụta, ọ na-eje ozi iji kewaa ebe ndị na-emetụta ma gbochie mgbasa nke ihe na-emetụta. Usoro a na-ejikwa na ịmepụta mkpuchi seepage n'okpuru ọdụ mmiri, na nkwado mgbọrọgwụ n'okpuru ihe ndị dị ugbu a, na n preparation nke elu kọntakt maka ọrụ grouting na-esote. Nchekwa ya na-enye ohere ịmegharị akụkụ ndị a na-achọghị na nkume na-enweghị imetụta ala ndị gbara ya gburugburu. Usoro ọrụ na-agụnye ịkwado mmiri jet nrụgide dị elu—n'ozuzu na-enye 200–600 bar na mmiri 200–400 liters kwa nkeji—megide ala ma ọ bụ nkume iji mee ka erosion na displacement nke akụkụ. Nhazi nozzle pụrụ iche, etinyere na usoro nduzi, na-agafe usoro ịkpụ e mere ka a na-emepụta ogige ndị na-ejikọta ma ọ bụ na-adị n'ọnọdụ. Ihe a na-emepụta na-ejikọta na mmiri iji mepụta slurry, nke a na-ewepụ na-adịgide adịgide site na tremie pipes jikọtara na akụrụngwa ọgwụgwọ na dewatering. Usoro a na-emegharị na-ewepụ na-eme ka mgbidi a na-emepụta ruo n'ogologo karịa 50 mita. Ngwa nke jets, jikọtara na ọsọ slurry, na-achịkwa ọsọ nke mmepe na mma mgbidi. Akụrụngwa dị na ụdị a gụnyere pumps centrifugal ma ọ bụ piston nke nrụgide dị elu (n'ozuzu 160–400 kW), nhazi isi jet na nhazi nozzle dị iche iche, usoro nyocha nrụgide na ọsọ n'oge, na ụlọ ọrụ ọgwụgwọ slurry jikọtara hydrocyclones, tanks na-anwụ, na teknụzụ dewatering. Usoro nduzi sitere na kelly bars dị mfe ruo na usoro njikwa kọmputa akpaaka na-enye ntụziaka ziri ezi na nkwụsị. Nhọrọ nke akụrụngwa hydromilling na-achọ nyocha nke njirimara ala na nkume, ịdị elu na omimi mgbidi achọrọ, oge mmepụta a kwadoro, na oke oghere na saịtị. Nkume grain size distribution, cohesion, na cementation na-emetụta kpọmkwem nrụgide na ọsọ. Nchekwa mmiri, karịsịa na aquifers mechiri emechi, na-achọ ka a na-elekọta slurry nke ọma iji mee ka trench kwụsiri ike n'oge ọrụ. Ọrụ hydromilling na-achịkwa site na EN 1538 (Ime Mgbidi Diaphragm), EN 12716 (Ime Ihe Pụrụ Iche Geotechnical: Jet Grouting), na ụkpụrụ ISO 6932 gbasara usoro ike mmiri na arụmọrụ pump. Mba na-adabere na iwu na koodu ụlọ ọrụ mpaghara na-akọwa usoro nkwado mma na ụkpụrụ mbupụ gburugburu, karịsịa gbasara itinye slurry na nkwụsị nke elu nwere ike ime site na usoro a.
Ụgbọ mmiri hydromill nke crane na-eburu bụ akụkụ pụrụ iche nke usoro hydromill, nke a na-emezigharị maka ngwakọta ala na simenti na mmezi ala n’ime owuwu mgbidi diaphragm, mkpuchi mkpuchi, na ihe mgbochi secant pile. A na-ejide ụdị ndị a site na cranes na-arụ ọrụ siri ike ma ọ bụ usoro piling, na-enye ohere maka ịbanye n'ogo na mmezi ala n'akụkụ site na ngwakọta jet hydraulic. N'okwu nke injinia ntọala miri emi na njikwa mmiri ala, hydromills na-arụ ọrụ dị mkpa iji mepụta mpaghara ala na-enweghị mmiri ma ọ bụ na-akwado ibu site na ijikọ jets mmiri dị elu na ịtụgharị auger iji homogenize ala na ihe njikọ n'ime ogige ngwakọta nke a na-achịkwa. Usoro ọrụ nke hydromills nke crane na-eburu gụnyere nhazi jet mmiri nwere ọtụtụ nozzle nke na-emebi ala na-enweghị ihe ọ bụla site na eroding hydraulic mgbe ọ na-etinye ihe njikọ simenti ma ọ bụ kemịkal. Ka hydromill na-agba ọsọ n'akụkụ n'ime oghere a na-emegharị ma ọ bụ casings, auger na-agba ọsọ na-ebufe ihe ngwakọta na elu. Usoro a na-eji nrụgide dị iche iche na-achịkwa—na-adịkarị site na 400 ruo 600 bar—iji nweta fluidization ala zuru oke na homogenization. A na-enweta ịbanye n'ogo site na usoro ịkụ crane, na-enye ohere maka njikwa omimi ziri ezi dị mkpa iji mepụta mkpuchi na-enweghị mmiri ma ọ bụ matrices na-akwado ibu. Iji tinye jets mmiri na slurry njikọ n'otu oge na-eme ka mgbasa ozi dị mma ma wepụ nsogbu nke ịkpa nkịtị nke a na-ahụkarị na usoro ngwakọta ala miri emi ọdịnala. Usoro hydromill nke crane na-eburu na-eji na ọtụtụ ọnọdụ ntọala miri emi: owuwu mgbidi diaphragm ebe ha na-emepụta mgbidi na-enweghị mmiri maka excavations n'okpuru mmiri, itinye mkpuchi mkpuchi na ndozi saịtị na-emebi na igbochi landfill, ihe mgbochi secant pile maka ihe nchekwa, na njikọta ala miri emi maka nkwado ntọala. N'iji jetgrouting na hydromilling, ndị na-arụ ọrụ na-enweta mmezi ala ozugbo na njikwa permeability ogologo oge. Nhazi akụrụngwa n'ime ụdị a na-agbanwe nke ukwuu dabere na omimi ọrụ (na-adịkarị site na 8 ruo 40 mita), ọnọdụ ala (nke na-ejikọta na granular matrices), na nkọwa arụmọrụ a tụrụ anya. Ihe ndị bụ isi gụnyere diameter nozzle (4 ruo 10 mm), akara nrụgide mmiri (400–700 bar), diameter auger (600–1200 mm), na ọnụego nnyefe slurry (50–300 liters/nkeji). Diameter ogige ngwakọta na njikọta na-ejikọta kpọmkwem na nkọwa akụrụngwa na ikike ibu crane (60–180 tonnes bụ ihe a na-ahụkarị maka ndị na-eburu ibu siri ike). Kriterị ịhọrọ usoro hydromill nke crane na-eburu gụnyere nyocha stratigraphy ala, ihe ndị a chọrọ maka ike ikpeazụ (na-adịkarị UCS: 2–15 MPa), nkwado ụdị njikọ, ihe mgbochi ịnweta akụrụngwa, na echiche gburugburu ebe obibi gụnyere àgwà mmiri ala na oke vibration. Njikọ omimi na diameter na ugboro oscillation n'akụkụ ga-eme ka ha kwekọọ na njikọ ala na ọnọdụ mmiri ala iji hụ na ngwakọta zuru oke na-enweghị ịda oghere ma ọ bụ ọnwụ slurry. Ụkpụrụ ndị metụtara na-achịkwa ọrụ hydromill gụnyere EN 1538 (Mgbidi Diaphragm), EN 14199 (Itinye Micropile), na DIN 4128 (Jet Grouting na Germany). ISO 14686 na-enye nduzi njikwa àgwà maka teknụzụ ngwakọta miri emi. Ikwesịrị imezu iwu mmiri ala mpaghara na nkọwa geotechnical nke ndị ọchịchị na-enye tupu nkọwa na itinye.
Ngwaọrụ hydromill nke dabere na ịkụ na-anọchite anya ụdị ngwaọrụ pụrụ iche nke excavation na ọgwụgwọ ala nke jikọtara teknụzụ jet nrụgide dị elu na igwe ịkụ rotary ma ọ bụ percussion iji mepụta mgbochi n'okpuru ala na ala kwụsiri ike. Usoro ndị a bụ isi na injinia ntọala miri emi, na-enye ohere maka owuwu mgbidi diaphragm, mkpuchi, nhazi secant na tangent pile, na mpaghara mmezi ala jet-grouted. Ụdị ngwaọrụ a gụnyere nhazi hydromill dị iche iche nke etinyere na igwe piling ma ọ bụ ịkụ ọdịnala, na-eji mast, ụlọ ọrụ ike, na usoro hydraulic nke igwe iji nye ike na eziokwu dị mkpa maka ọrụ n'okpuru ala. Ngwaọrụ hydromill na-arụ ọrụ na ọtụtụ ngwa geotechnical. Ngwaọrụ kachasị bụ ịmepụta panel mgbidi diaphragm na ụlọ ala mmiri, ihe owuwu n'okpuru ala, na usoro nkwado; itinye mkpuchi na-adịghị arịa mmiri maka mgbidi dam, levees, na mmezi gburugburu; usoro secant na tangent pile maka mgbidi na-enweghị nkwado ma ọ bụ nke na-akwado; ọrụ jet grouting maka stabilizing ala, underpinning, na conditioning ala pipe-jacking; na ngwakọta ala-cement na in-situ maka stabilizing ala na injinia pavement. Ngwaọrụ ọ bụla na-achọ njikwa mmanụ ziri ezi, nhazi jet kwụsiri ike, na paramita ngwakọta ma ọ bụ excavation nke a na-emegharị. Usoro ọrụ na-adabere na jets mmiri nrụgide dị elu (n'ozuzu 300–600 bar) nke a na-edepụta n'ala site na nozzles e mere nke ọma nke etinyere na Kelly bar nke igwe ịkụ ma ọ bụ stem oscillating. Ka igwe na-emegharị ngwá ọrụ n'elu ma ọ bụ na-agba ọsọ na-achịkwa, jets na-ehichapụ ma na-ejide ala na-ejupụta na slurry cement, na-emepụta ogwe kwụsiri ike ma ọ bụ na-ewepụ ala maka excavating panel. Nrụgide injection na ọnụego mmiri na-achịkwa ogo hydromill na ịdị elu nke homogenization ala-cement. Maka owuwu mgbidi diaphragm, hydromill na-ewepụ n'ime trench slurry nke bentonite na-akwado; maka ngwa jet grouting, ọ na-emepụta ogwe grout nke nwere ogo na geometry overlap a kapịrị ọnụ. Ndị na-emepụta ngwaọrụ bụ hydromills mmiri otu (jet mmiri na injection slurry na-aga n'ihu), usoro mmiri atọ (nozzles atọ dị iche maka njikwa ka mma na excavation megide grouting), hydromills rotary-oscillating maka nduzi panel ziri ezi, na ụdị percussion-assisted nke na-ejikọta ike mmetụta na omume jet maka ala na-ejikọta ma ọ bụ cemented nke ọma. Nhọrọ nhazi na-adabere na mkpa nke mgbidi, ngwakọta ala, ikike nrụgide injection, na ọnụego mmepụta. Nhọrọ ihe na-ejide nkewa ala (cohesion, internal friction angle, in-situ density, ịdị adị nke cobbles ma ọ bụ boulders), mkpa mmanụ na mgbidi, ọnọdụ mmiri ala, okpomọkụ gburugburu na-emetụta rheology slurry, ikike mobilization nke igwe dị, na ihe achọrọ maka njikwa mma—n'ozuzu nyocha anya na percussion logging, na nkwado geophysical. Njirimara ngwaọrụ ga-enwerịrị iji hụ na ụlọ ọrụ ike nke igwe (nrụgide pump na ọnụego mmiri) na-ezute ụkpụrụ nhazi hydromill na na usoro nduzi na-edebe verticality n'ime ±0.5–1.0 percent, dịka ụkpụrụ nhazi si dị. Ụkpụrụ ndị metụtara gụnyere EN 1538 (Nrụpụta ọrụ geotechnical pụrụ iche—Mgbidi diaphragm), EN 12716 (Nrụpụta ọrụ geotechnical pụrụ iche—Grouting), EN ISO 14688 (Nkewa ala), na API RP 2A-WSD maka ngwa n'okpuru mmiri. Nkwenye ndị na-arụ ọrụ na asambodo onye na-arụ ọrụ hydromill (n'ozuzu na-achịkwa site na ndị ọchịchị mpaghara ma ọ bụ ndị na-emepụta ngwaọrụ) bụ ihe dị mkpa maka arụmọrụ nchekwa.
Hydromill berbasis carrier khusus mewakili kategori peralatan hydromill khusus yang dirancang untuk konstruksi fondasi dalam, khususnya dikonfigurasi dengan carrier yang terpasang yang mengintegrasikan kepala hydromill dengan sistem dukungan mobilisasi dan operasi yang khusus. Unit-unit ini dirancang untuk menjalankan pekerjaan stabilisasi tanah presisi tinggi dalam proyek rekayasa geoteknik yang memerlukan pemotongan horizontal atau hampir vertikal yang terkontrol ke dalam strata subsurface.
Kit hydromill mewakili peralatan perakitan khusus yang dirancang untuk pemotongan mekanik yang terkontrol dan stabilisasi in-situ formasi tanah dan batuan dalam aplikasi fondasi dalam. Sistem ini merupakan dasar dalam konstruksi dinding diaphragm, curtain pemotongan, dan barrier dukungan vertikal atau penahan lainnya yang harus memasuki kondisi tanah yang sulit pada kedalaman yang sering melebihi 50 meter. Dengan menggabungkan aksi pemotongan mekanik dengan sirkulasi slurry yang terus-menerus, kit hydromill memungkinkan pemotongan vertikal presisi dalam situasi di mana penggalian tanpa dukungan akan menyebabkan keruntuhan dinding, kehilangan slurry yang berlebihan, atau deviasi yang tidak dapat diterima dari geometri desain.
Ngwaọrụ ndị ọzọ gụnyere usoro nkwado dị mkpa na igwe nke abụọ nke na-eme ka arụmọrụ nke usoro excavation na-akwado slurry na injinia ntọala miri emi. Na ngwa hydromilling na owuwu mkpuchi, akụkụ ndị a bụ ihe na-adịghị mkpa maka ịmaintain ọnọdụ excavation kwụsie ike, na-achịkwa njirimara mmiri drilling, na-eme ka arụmọrụ na-aga n'ihu. Kama imepụta ọrụ excavation mbụ, ngwa ndị ọzọ na-ahụ maka njikọta slurry, mgbasa, ọgwụgwọ, na iwepụ—ọrụ ndị na-emetụta ịdị mma nke ihe na ọnụahịa nke mgbochi ala. Na owuwu mgbidi diaphragm, ntinye mkpuchi, mgbidi secant na tangent pile, na ọrụ jet grouting, usoro ngwa ndị ọzọ na-maintain njikọta dị nro nke nrụgide hydrostatic slurry, nkwụsị mkpụrụ, na rheology mmiri nke a chọrọ iji gbochie ịda ụra na deformation ala. Ngwa a chọrọ ngwakọta slurry na ọgwụgwọ na-aga n'ihu, dịka mmiri na-arụ ọrụ n'otu oge dị ka ngwá ọrụ excavation, onye na-enye nrụgide nkwado, na ihe na-eme ka cake filter. Na-enweghị usoro ndị ọzọ na-arụ ọrụ nke ọma, ngwá ọrụ mbụ enweghị ike ịrụ ọrụ nke ọma, na mgbidi a na-ewu nwere ike inwe mmejọ mma gụnyere ndọtị inclination, mmụba na-adịghị mma, na arụmọrụ ihe na-adịghị mma. Usoro ọrụ na-elekwasị anya na mgbasa slurry: a na-ejikọta slurry bentonite ma ọ bụ polymer na elu, na-ebupụta ya n'okpuru ala site na kelly/casing, na-alaghachi laden na mkpụrụ excavation, mgbe ahụ, na-enweta ọgwụgwọ tupu mgbasa ọzọ. Ngwaọrụ ndị ọzọ na-achịkwa ọkwa ọ bụla. Ụlọ ọrụ slurry na-eme ka mmiri dị njikere na density a kọwara (n'ozuzu 1.1–1.3 t/m³ maka bentonite) na viscosity. Centrifuges ma ọ bụ hydrocyclone cascades na-ejikọta ma wepụ mkpụrụ drilling dị nta nke na-emebi njirimara slurry. Ngwa desanding na-maintain nkewa mkpụrụ n'ime njirimara a kọwara (n'ozuzu na-ewepụ mkpụrụ >10–15 μm). Ngwa ngwakọta slurry na-agbanwe pH, concentration polymer, na paramita rheological. Ụlọ tank na-enye ikike surge na mpaghara nkwụsị. Ngwa mgbasa na-maintain ọnụego mgbasa a chọrọ; vibrating screens na-ejikọta ihe ndị na-abawanye. Nhazi ngwá ọrụ dị mkpa gụnyere: ụlọ ọrụ slurry jikọtara (1–2 m³/min mgbasa), usoro nkwụsị centrifuge (nke kwesịrị ekwesị maka ala cohesive), hydrocyclone cascades (nke a na-eji maka excavation ala granular), tanks mud nwere baffles na ahịrị underflow, sets pumps suction na discharge, manifolds na netwọk pipes, hopper na usoro conveyor maka ijikwa mkpụrụ nkume, na usoro njikwa akpaaka maka paramita slurry. Nhazi na-agbanwe dabere na profaịlụ ala, ịdị elu mgbidi, na ọnụego mmepụta. Nhọrọ ndị a na-atụle gụnyere: mkpa slurry mgbasa nke dabere na ọnụego excavation; nkewa mkpụrụ ala na ọnụego mkpụrụ na-atụ anya; ịdị elu na mpaghara mgbidi (na-achọpụta total slurry volume); ohere saịtị dị maka itinye ngwá ọrụ; ike dị na njikọ; nkwado na usoro excavation mbụ (hydromilling casing guides, kelly systems); ntụkwasị obi na gburugburu ala na mmiri ala; na ịdị adị nke akụkụ ndị ọzọ. Ihe ndị na-emetụta gburugburu ebe obibi—ụzọ iwepụ mkpụrụ a na-arụ ọrụ, mkpọtụ na vibration, iwu ịhapụ mmiri—na-emetụta nhọrọ ngwá ọrụ. Ụkpụrụ ndị metụtara gụnyere EN 1538 (Mgbidi diaphragm na ala siri ike na nkume dị nro), EN 12699 (Piles displacement), ISO 6892-1 (nnyocha ihe), na API RP 65 (Usoro ndị a na-atụ aro maka Nlekọta na Iji Cables Subsea) ebe usoro umbilical na-emetụta. Iwu hydromilling nke mba na iwu nchebe mmiri ala na-elekwasị anya na ijikwa slurry. Ngwaọrụ ga-emezu iwu ngwá ọrụ 2006/42/EC (CE marking) na ụkpụrụ ahụike ọrụ maka mkpọtụ na mmetọ kemịkal n'oge ijikwa slurry.
Get the latest equipment listings, industry news, and market insights.