Ngwaọrụ Hydromill na-achọgharị

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.