Ngwá ọrụ diaphragm wall grabs bụ ngwaọrụ nchịkọta pụrụ iche e mere iji mepụta mgbidi ndị siri ike, nke a na-emegharị na kọntaktị n'ala site na usoro trench-cutting na-aga n'ihu site na elu ala. Ngwá ọrụ ndị a bụ ihe dị mkpa na injinịa mgbọrọgwụ omimi nke oge a, karịchaa na gburugburu obodo ebe ihe mgbochi na iwu gburugburu ebe obibi na-achọ usoro nchịkọta nke ọma, nke a na-achịkwa. Usoro diaphragm wall na-enye ndị injinia ohere ịmepụta mgbochi kwụ ọtọ nke na-arụ ọrụ ọtụtụ: inye nkwado ala lateral, ịbụ dịka mkpuchi mkpuchi iji chịkwaa mmiri ala, igbochi ihe na-emebi, na ịkwado ikike ihe maka usoro mgbọrọgwụ n'onwe ya. Ngwá ọrụ diaphragm wall grabs na-ejikarị eme ihe na nrụpụta mgbidi diaphragm nke na-eme perimeter basement, ihe owuwu n'okpuru ala, na usoro nkwụsị na mpaghara obodo. Ha dịkwa mkpa maka ịmepụta mkpuchi mkpuchi na ngwa ọrụ nchịkwa mmiri ala, mgbidi secant pile ebe a na-etinye mgbidi ndị na-emegharị na kọntaktị na-eme ka ọ bụrụ mgbochi na-aga n'ihu, na ngwa mgbidi sheet pile nke oge na-adịgide adịgide. Na mmezi saịtị ndị na-emebi, mgbidi diaphragm e wuru na ngwá ọrụ ndị a na-arụ ọrụ dị ka mgbochi in-situ iji gbochie mgbasa nke ihe na-emebi. Na mgbakwunye, teknụzụ a na-eji na ọrụ ngwakọta ala omimi ebe a na-eme nchịkọta trench nke ọma tupu ịmalite stabilizing ala site na auger. Usoro ọrụ na-agụnye ịkwanye akpa grab site na crane ma ọ bụ ngwá ọrụ drilling diaphragm wall pụrụ iche ma wepụ ya n'ime trench jupụtara na slurry nke a na-ewepụ na ọkwa achọrọ. Slurry—nke bụkarị bentonite-based clay suspension—na-edobe nkwụsi ike nke mgbidi trench site na mmepe nke filter cake na inye nrụgide hydrostatic nke na-emegide nrụgide ala lateral. Ka akpa grab na-adaba, ọnụ ya na-emeghe mgbe ọ rutere na ala trench ma mechie iji wepụ ala na nkume, nke a na-ebuli ma wepụ na elu. Usoro a na-emegharị na-aga n'ihu ruo mgbe a rụzuru ọkwa a tụrụ aro, nke na-adịkarị site na 40 ruo 100 mita dabere na geology saịtị na ihe achọrọ. A na-emezi trench a wepụ na cages ígwè ma jupụta na tremie concrete iji mepụta mgbidi diaphragm nke ihe. Nhazi ngwá ọrụ bụ isi gụnyere akpa grab clamshell nke otu eriri maka ngwa ọrụ ndị a na-ahụkarị, akpa grab eriri abụọ na-enye njikwa ka mma na ọnọdụ ala siri ike, na akpa grab pụrụ iche nwere ọnụ na-agbanwe maka ụdị ala dị iche iche. Ike akpa grab na-adịkarị site na 0.5 ruo 3.5 cubic mita, na nhazi akpa a na-eme ka ọ bụrụ nke a na-ahụ maka ala na-ejikọta, ihe na-emepụta, ma ọ bụ geology jikọtara. Usoro oge a na-emekarị na-agbakwunye njikwa eletrọnịkị na nyocha ọkwa iji hụ na nrụgide trench na ịdị elu ziri ezi n'ime ±100mm tolerances. Nhọrọ nke ihe ndị a na-adabere na geometry trench (obere na ọkwa a tụrụ aro), njirimara ala na nkume (ike, abrasiveness, ọnọdụ mmiri ala), na usoro njikwa slurry. Nhọrọ ngwá ọrụ na-adabere na ikike crane dị, nrụgide na mkpọtụ na mpaghara obodo, na ọnụego mmepụta achọrọ. Nchekwa gburugburu gụnyere olu nkwụsị slurry, karịchaa na ọnọdụ ala na-emebi nke chọrọ ọgwụgwọ pụrụ iche tupu wepụ. Ụlọ ọrụ na-ezo aka na EN 1538 (Nrụpụta nke ọrụ geotechnical pụrụ iche—Mgbidi diaphragm) na ISO 6934-1 (Igwe eriri ígwè maka ịkụ na ịdọ aka na ntị) iji hụ na ngwá ọrụ na-emezu, nyocha nkwụsi ike trench, na ụkpụrụ nkọwa slurry nke na-enye nkwado nke ihe nke mgbidi diaphragm e wuru.
Njikọ ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro na-akpali na-akpali na-akpali n'ime ụlọ ọrụ ndoro ndoro nke ndoro ndoro nke ndoro ndoro nke ndoro ndoro nke ndoro ndoro. Ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro.
Ụgbọ mmiri na-arụ ọrụ siri ike na injinia ntọala miri emi na-anọchi anya akụrụngwa ịkekọrịta pụrụ iche nke a na-emezigharị iji jikwaa ibu dị ukwuu na ihe ndị a na-achọ n'oge mmezi ala, nkwado excavations, na owuwu n'okpuru ala. N'adịghị ka cranes nke a na-eji n'owuwu ụlọ, cranes na-arụ ọrụ siri ike maka ọrụ ntọala miri emi bụ ndị a na-emepụta iji jikwaa ibu cyclical, nrụgide dynamic, na njikwa ziri ezi nke a chọrọ mgbe a na-etinye grabs mgbidi diaphragm, secant pile rigs, ngwá ọrụ ngwakọta ala, na akụrụngwa metụtara n'ime gburugburu ebe obibi nke a na-achịkwa. Ụgbọ mmiri ndị a na-arụ ọrụ dị ka isi nkwado maka owuwu mgbidi diaphragm, ebe ha na-emezi na ịkwado nnukwu grabs igwe—ngwaọrụ na-arịgo 30 ruo 100+ tonnes—nke na-emegharị ala na nkume site n'ime mgbidi nduzi ruo omimi nke 100 mita ma ọ bụ karịa. Na mgbakwunye na mgbidi diaphragm, cranes na-arụ ọrụ siri ike na-akwado itinye mkpuchi mkpuchi, ọrụ piling secant na tangent, itinye akụrụngwa jet grouting, na ngwá ọrụ nkwado ala. Ha dịkwa mkpa na ọrụ drilling n'akụkụ na n'ịchịkwa nnukwu diameter casing strings, mgbidi nduzi, na pipes tremie. Ọrụ bụ isi nke crane bụ ibelata na ịrị elu ngwá ọrụ na ziri ezi mgbe ọ na-edebe nhazi n'ogo na ijikwa nrụgide hydrostatic na frictional a na-ahụkarị n'oge itinye na iwepụ. Usoro ọrụ na-adabere na usoro hydraulic ma ọ bụ eletrik na-eburu ibu, na-adịkarị na ikike ọsọ mgbanwe iji jikwaa dynamics ibu. Ụgbọ mmiri na-arụ ọrụ siri ike nke oge a nwere usoro na-ahụ ibu, njikwa anti-sway, na nlekota n'oge a iji gbochie njikọ ngwá ọrụ ma hụ na arụ ọrụ nchekwa na ọnọdụ nrụgide dị elu. Usoro slewing na-enye ohere 360-degree ịgbanwe, ebe usoro winch na-ejikọta ngwaọrụ na-ejide ibu, nhazi drum ọtụtụ, na njikwa akụkụ iji jikwaa ọrụ multi-cable na-arụ ọrụ n'otu oge. Ọtụtụ ụdị na-eji lattice ma ọ bụ booms kwụsiri ike nwere ike ịgbatị ogologo n'akụkụ, nke dị mkpa maka ịkwado akụrụngwa n'elu mgbidi nduzi ma ọ bụ n'elu ebe ọrụ nke a na-achịkwa site na ihe ndị dị adị. Nhazi akụrụngwa na-agbanwe site na cranes na-agba ọsọ na-enye ikike ibu na ịdị mma ka ukwuu ruo cranes na-agba ụgbọ ala na-enye mmegharị n'elu ọtụtụ saịtị ọrụ. Nhazi boom gụnyere kwụsiri ike, articulated, na telescopic. Ibu na-adịkarị site na 100 tonnes maka piling secant nke obere nha ruo 500+ tonnes maka ọrụ mgbidi diaphragm nke nnukwu nha. Ụdị pụrụ iche na-ejikọta derricks na-eburu na floating barges maka ọrụ ntọala miri emi n'okpuru mmiri, karịsịa na jet grouting na ngwakọta ala na-egbutu. Kriterị ịhọrọ na-elekwasị anya na ibu kachasị tụrụ anya n'oge ọrụ ngwá ọrụ, gụnyere ibu grab, ibu ala a na-ejide, na ike dynamic sitere na nkwụsị ngwa ngwa ma ọ bụ igbu akụrụngwa. Omimi nke ọrụ na-achịkwa ogologo eriri na ọsọ winch a tụrụ anya. Geometry saịtị—karịsịa oghere n'elu na ikike ala—na-emetụta nhazi boom na nhazi ntọala. Ụdị gburugburu ebe ọrụ, gụnyere mmegharị mmiri, na-achọ usoro hydraulic na-adịghị emerụ emerụ na akụkụ eletrik nke a na-emechi. Ikwesịrị imezu iwu na ụkpụrụ ndị metụtara, gụnyere EN 13000 (nhazi cranes), ISO 4309 (nnyocha eriri waya), na iwu ibu mpaghara. Ọkachamara na-enyocha oge ịgbanwe, ziri ezi nke ọsọ ibu na-ebelata, ikike nlekota site na anya, na mkpa mmanụ ma ọ bụ ike. Njirimara nchekwa gụnyere ndị na-ahụ ibu, usoro mwepu mberede, na nlekota ahụike nke ihe owuwu na-abawanye na-achọ ka e tinye iji mezuo ihe ndị a chọrọ na nkwekorita ntọala miri emi na ụkpụrụ nkwado.
Ụgbọ mmiri hydraulic grab bụ ngwá ọrụ excavating dị mkpa nke a na-emezigharị maka iwepụ ala na nkume n'ụzọ a na-achịkwa n'oge owuwu mgbidi diaphragm na mkpuchi mkpuchi. Ndị a bụ clamshell buckets pụrụ iche, a na-ejide site na cranes na-arụ ọrụ siri ike, na-arụ ọrụ n'ime excavations miri emi nke a na-emezi site na slurry bentonite, na-enye ndị na-arụ ọrụ ohere ịmepụta mgbidi ala na-enweghị mmiri n'ụzọ ziri ezi na nchekwa. Hydraulic grab bụ ihe dị mkpa na injinia ntọala miri emi nke oge a, karịsịa ebe usoro ọdịnala nke trench mepere emepe adịghị ekwe omume n'ihi mmiri ala, ihe achọrọ maka njikwa contamination, ma ọ bụ nsogbu ịdịgide. A na-eji hydraulic grabs na owuwu mgbidi diaphragm—ngwa kachasị ewu ewu—ebe ha na-emegharị trenches mgbidi nduzi n'ogo dị elu karịa 100 mita. Na mgbakwunye na mgbidi diaphragm, a na-eji ha na itinye mkpuchi mkpuchi (mgbochi kwụ ọtọ na-ejide mmịpụta contaminant), owuwu secant pile (piles reinforced-concrete na-ejikọta), mgbidi ngwakọta ala, na excavations nkwado jet-grouting. N'ọrụ ọ bụla, grab na-arụ ọrụ n'ime trench jupụtara na slurry, na-edebe ịdịgide mgbidi mgbe ọ na-ewepụ ihe ruo omimi na obosara a tụrụ anya. Usoro ọrụ bụ nke dị mfe ma dịkwa na-achịkwa nke ukwuu. A na-ejide hydraulic grab site na hook crane site na usoro ịkụ na eriri njikwa. Ka bucket na-adaba n'ime trench jupụtara na bentonite, a na-etinye buckets clamshell abụọ na-emeghe. Mgbe ọ ruru ala, a na-emechi buckets gburugburu ala na nkume a na-emegharị site na hydraulic cylinders (na-adịkarị powered site na hydraulic power unit nke a na-etinye na elu nke ejikọtara site na hose umbilical). Crane na-ebuli grab mechiri emechi na ibu ya na elu, ebe a na-ewepụ ihe ahụ n'ime akpa spoil. Usoro a—dig, close, lift, discharge, lower—na-emegharị ruo mgbe omimi na obosara a tụrụ anya ruru. Slurry bentonite na-akwado mgbidi trench na-adịgide adịgide, na-egbochi ịda na na-enye ohere maka ịdị n'otu nke fines jupụtara. Nhazi dị iche iche dị iche iche na ikike na imewe. Buckets ọkọlọtọ na-adịkarị site na 0.5 cubic meters (n'ihi mgbidi nduzi na oghere tight) ruo 3.0+ cubic meters (n'ihi akụkụ diaphragm mepere emepe nke chọrọ ọnụego mmepụta dị elu). Obosara grab na-agbanwe site na 1.5 ruo 3.5 mita, nke a na-emezi maka ịdị arọ mgbidi. Nhazi buckets na-agbanwe site na klas ala: buckets dị larịị maka clay na silt; nhazi nwere ebu maka ala granular na nkume weathered; nhazi siri ike nke steel na-adịgide adịgide maka nkume a na-emebi na deposits cobble-laden. A na-enye usoro hydraulic dị ka usoro otu eriri (ọrụ clamshell bụ isi) ma ọ bụ usoro eriri abụọ (na-enye ohere maka njikwa buckets n'onwe ha maka ala siri ike). Kriterị ịhọrọ na-adabere na ọtụtụ ihe ndị metụtara ọrụ. Nkọwa ala (SPT-N, CPT resistance, uniaxial compressive strength) na-achịkwa geometry ebu grab na ihe ndị a chọrọ maka ike ọrụ. Omimi na obosara mgbidi a chọrọ na-achịkwa nha bucket na ikike crane. Oge ịgbanwe na-atụgharị na-ahapụ ịhọrọ buckets—buckets buru ibu na-eme ka mmepụta na njem otu oge ma na-achọ cranes nwere ike karịrị. Njirimara slurry na bentonite concentration na-emetụta ihe ndị a chọrọ maka ike excavating. Nsogbu oghere na saịtị nwere ike ịkwụsị elu hook crane ma ọ bụ mgbasa nke outrigger, na-achọ ka e mepụta grab na-adị mfe. Ụkpụrụ ndị metụtara gụnyere EN 12716 (nhazi na mmezu nke mgbidi diaphragm na bentonite), EN 12815 (nkọwa maka grabs excavating ala), ISO 13357 (grabs—ihe achọrọ nchekwa), DIN 4014 (mgbidi diaphragm na Germany na omume EU), na API RP 2A (n'ihi ngwa n'okpuru mmiri). Iwu ụlọ mpaghara na akụkọ nyocha geotechnical na-enye nkọwa ziri ezi. Nhọrọ ọkachamara na-achọ mmekọrịta n'etiti injinia geotechnical, onye na-arụ ọrụ, onye na-arụ ọrụ crane, na onye ọkachamara akụrụngwa iji mepụta akụrụngwa na-adabara ọnọdụ ala na ebumnuche mmepụta.
Njikọ ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro na-akpali na-akpali na-akpali n'ime ụlọ ọrụ ndoro ndoro nke ndoro ndoro nke ndoro ndoro nke ndoro ndoro nke ndoro ndoro. Ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro.
Rope suspended grab carriers na-anọchite anya akụkụ dị mkpa nke usoro owuwu ntọala miri emi nke mepụtara, na-enye njikọ ụlọ ọrụ n'etiti usoro rope nke crane na grabs excavation a na-eji na owuwu mgbidi diaphragm, cutoff curtain, na ọrụ excavation trench. Ngwá ọrụ ndị a bụ usoro na-eburu ibu bụ isi nke na-ebufe ibu site na grab a na-asụgharị na usoro hoist crane mgbe ha na-edebe njikwa ọnọdụ na ịdị mma ọrụ n'oge usoro excavation. Na injinịa ntọala miri emi, rope suspended grab carriers bụ ihe dị mkpa maka ngwa gụnyere owuwu mgbidi diaphragm, ebe ha na-asụgharị ụdị grabs dị iche iche n'oge excavation trench na ọrụ nhazi mgbidi na-esote. Ha bụkwa ihe dị mkpa maka ntinye mgbidi cutoff, nkwadebe owuwu secant pile, na nkwadebe trench jet grouting. Ngwá ọrụ ndị a bụ isi na usoro mgbidi na usoro mgbidi diaphragm slurry zuru ezu, ebe njikwa vertical a na-achịkwa na nkwụsị grab na-emetụta eziokwu excavation na àgwà nke concrete pour. A na-eji ha na nkwadebe mgbidi sheet pile na ọrụ mixing ala ebe nkwụsị trench na geometry excavation chọrọ njikwa grab a na-asụgharị. Usoro ọrụ nke rope suspended grab carriers na-adabere na nyefe ibu igwe site na njikọ rope waya na usoro beam na-ekesa. A na-asụgharị carriers site na ọtụtụ waya na-ejikọta na block hoist crane, nke na-ekesa ibu n'ụzọ ziri ezi ma na-ewepụ ịgbanwe ma ọ bụ tilting nke grab a na-asụgharị. Ọdịdị carrier na-anabata ụdị grabs dị iche iche—gụnyere clamshell buckets, orange peel grabs, ma ọ bụ grabs ụdị backhoe—site na interfaces mounting a na-achịkwa ma ọ bụ na-agbanwe. N'oge ọrụ, carrier na-edebe orientation grab ka ngwá ọrụ excavation na-agba ọsọ site na mbata, engagement excavation, hoisting, na phases spillage, na-eme ka ọnọdụ na-adịgide adịgide n'ime trench ma na-edebe smoothness mgbidi n'ime tolerances a họpụtara. Nhazi dị na ahịa na-adịgasị iche site na usoro asụsụ rope dị mfe maka ngwá ọrụ grab dị mfe ruo na usoro rope multi-point dị mgbagwoju anya nwere usoro auto-centering maka ọrụ mgbidi diaphragm buru ibu. Nhazi dị iche iche dabere na ibu grab (na-adịkarị 5 ruo 50 tonnes maka ngwa diaphragm), ikike omimi trench, eziokwu a chọrọ, na ma usoro ahụ na-arụ ọrụ na ma ọ bụ na-enweghị rails mgbidi. Nhọrọ nke ihe ndị a na-atụle gụnyere ọnụ ọgụgụ ibu ọrụ nchekwa nke na-ejikọta na ibu grab na ibu a na-asụgharị, gụnyere ibu na-emepụta na shock factors dị na usoro excavation. Ndị na-arụ ọrụ na-enyocha geometry njikọ rope na nhazi beam na-ekesa maka nkwụsị na njikwa nzaghachi. Nkwado na ikike crane dị ugbu a, nhazi hoist, na usoro njikwa bụ ihe dị mkpa maka njikọ ọrụ. Ikike carrier ịrụ ọrụ n'ime ihe mgbochi mgbidi ma ọ bụ n'otu aka na-achịkwa feasibility maka geometry trench pụrụ iche. Nchekwa na ohere maka mmezi na ịdị adị nke akụkụ na-eyi na-emetụta ọnụahịa ndụ na ọrụ ogologo oge. Ụkpụrụ ụlọ ọrụ na-achịkwa rope suspended grab carriers sitere na ISO 4304 (okwu cableway), ụkpụrụ DIN maka usoro asụsụ rope, na iwu igwe European (2006/42/EC). EN 13001 series standards na-enye nduzi maka imewe ngwá ọrụ na-ebuli, ebe ụkpụrụ pụrụ iche nke ọrụ na-ejikarị na-ezo aka na koodu ụlọ na mpaghara na DIN 17200 maka akụkụ ígwè na BS 3111 maka asambodo rope waya.
Njikọ ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro na-akpali na-akpali na-akpali n'ime ụlọ ọrụ ndoro ndoro nke ndoro ndoro nke ndoro ndoro nke ndoro ndoro nke ndoro ndoro. Ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro.
Njikọ hydraulic nwere ike ịtụle n'ime ụzọ ndoro nke nchịkwa nke na-enyere aka n'ime ọrụ ndoro ndoro nke ọkụkụ na-arụsi ọrụ n'ime ụlọ ọrụ ndoro ndoro. A na-enye ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro ndoro
Ngwaọrụ ndị ọzọ gụnyere usoro nkwado dị mkpa, akụkụ, na ngwá ọrụ nke na-eme ka arụmọrụ nke owuwu mgbidi diaphragm na ọrụ mkpuchi ala n'okpuru. Na injinia ntọala miri emi, ngwa ndị ọzọ na-arụ ọrụ dị mkpa na ịmaintain ọnọdụ slurry, na-eme ka excavation na-achịkwa, na ịkwụsị ịdị mma nke ihe n'oge niile nke mmepe trench na ọrụ ọgwụgwọ ala. Ngwaọrụ ndị ọzọ na-enweta ngwa n'ọtụtụ teknụzụ mmezi ala na nchekwa, gụnyere mgbidi diaphragm, mkpuchi, mgbidi secant na tangent pile, usoro mgbidi sheet a na-eme ka jet grouting, mgbidi ngwakọta ala, na usoro mgbochi ala ndị ọzọ. Usoro nkwado ndị a bụ isi na ọrụ ndị chọrọ njikwa mmiri ala siri ike, ịkpa contaminants, ma ọ bụ nkwadebe ntọala miri emi na gburugburu ebe obibi ndị na-emetụta ebe a na-arụ ọrụ nke ọma na obere mmebi ala. Usoro ọrụ nke ngwa ndị ọzọ na-agbanwe site na ụdị usoro. Usoro ngwakọta na mgbasa slurry na-maintain njirimara mmiri drilling bentonitic ma ọ bụ polymer n'oge excavation, na-egbochi ịda ụra na na-eme ka ala na-apụta kwụsie ike site na ịdị arọ hydrostatic. Pipes tremie na tubes casing na-eme ka etinye concrete ma ọ bụ grout n'ụzọ a na-achịkwa n'okpuru ala, na-ewepụ slurry na-enweghị nkewa ma ọ bụ mmetọ. Ụlọ nkwado dịka mgbidi nduzi, beams leveling, na rigs drilling na-enye nhazi ziri ezi na ikike ibu maka ngwá ọrụ excavation. Ngwa dewatering na filtration na-ewepụ additives mmiri drilling na solids, na-eme ka slurry reuse na izute ihe achọrọ maka ịhapụ gburugburu ebe obibi. Usoro nyocha na-enyocha paramita mmiri dị mkpa n'oge a, na-eme ka o doo anya na a na-emezu ọnọdụ a kọwara n'oge owuwu. Ụdị ngwá ọrụ dị mkpa n'ime ụdị a gụnyere ụlọ ọrụ slurry nwere ngwakọta, desanding, na centrifuge units maka ngwakọta mmiri; ngwakọta pipes tremie nwere diamita dị iche iche na nhazi njikọ; tubes casing na ihe igwe na ihe ngwakọta; frameworks nkwado maka nhazi na izi ezi; pumps submersible na progressive cavity maka mgbasa slurry; usoro nkwụsị nrụgide hydrostatic; na ngwaọrụ maka nyocha nke ịdị arọ, viscosity, ọdịnaya sand, na pH. Nhazi na-agbanwe site na usoro mobile dị ntakịrị nke kwesịrị ekwesị maka ọrụ obodo na obere ọrụ na ntọala kwụụrụ onwe ya na-akwado mmepụta nnukwu na ọrụ nnukwu ụlọ. Nhọrọ nke ngwa ndị ọzọ dabere na ọtụtụ ihe teknụzụ na ọrụ. Njirimara slurry na ọnọdụ gburugburu ebe obibi na-achọpụta mkpa desanding na ikike ngwakọta. Dị elu excavation, njirimara ala, na usoro mmiri ala na-emetụta nhọrọ gbasara density slurry, diamita pipes tremie, na nkọwa tubes casing. Logistics ọrụ, gụnyere ohere saịtị, ihe mgbochi oghere, na ọnụego mmepụta a chọrọ, na-achọpụta ma iji ngwá ọrụ mobile ma ọ bụ kwụụrụ onwe ya. Iwu gburugburu ebe obibi, karịsịa gbasara iwepụ slurry na nchebe mmiri ala, na-emetụta ihe achọrọ maka filtration na ọgwụgwọ. Nkwado ngwá ọrụ na ngwá ọrụ excavation a họọrọ na ihe achọrọ nke ntinye ikpeazụ ga-enwerịrị nkwado. Ụkpụrụ ụlọ ọrụ na-achịkwa ngwa ndị ọzọ gụnyere EN 1538 maka owuwu mgbidi diaphragm, nke na-enye ihe achọrọ zuru ezu maka njikwa slurry, ngwakọta mmiri, na usoro njikwa mma. Ndị na-emepụta ngwá ọrụ na-emekarị ka nkọwa ha kwekọọ na ụkpụrụ ISO maka njirimara mmiri drilling na ijikwa, yana ụkpụrụ mba dị mkpa dịka DIN (Germany), BS (United Kingdom), na JGS (Japan) nke na-enye ihe achọrọ teknụzụ maka arụmọrụ ngwá ọrụ na nkọwa ihe. Iwu mpaghara na ihe achọrọ nke ọrụ na-adịkarị mkpa ka a na-eme nyocha na akwụkwọ iji kwado nkwado na iwu nchebe mmiri ala na ụkpụrụ nchekwa saịtị owuwu.
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