Tankị Nchekwa Mmanụ/Mmanụ

Tankị nchekwa mmiri na slurry bụ ngwa enyemaka dị mkpa na ọrụ ntọala omimi na ọgwụgwọ ala, na-arụ ọrụ dị ka usoro buffer na nchekwa maka nnukwu volium nke mmiri excavation, slurry cement-bentonite, na mmiri usoro a chọrọ n'oge owuwu mgbidi diaphragm, ntinye curtain cutoff, jet grouting, na ngwa ngwakọta ala. Tankị ndị a na-arụ ọrụ abụọ dị mkpa: inwekwu nkwụsi ike nke mmiri na-arụ ọrụ na ịwụnye na injection, na-enye ohere maka nkwụsịtụ na nkewa nke ihe ndị a na-ejide tupu iji mmiri ọzọ ma ọ bụ itinye ya, na-eme ka arụmọrụ dịkwuo mma ma belata iji ihe n'ogologo oge ọrụ. Na owuwu mgbidi diaphragm, tankị nchekwa mmiri na slurry na-ejide slurry bentonite nke nwere polymer nke na-eme ka mgbidi trench kwụsie ike n'oge excavation, na ihe ndị a chọrọ na ọrụ na-adịkarị site na 50 ruo 500 cubic meters dabere na ịdị omimi mgbidi, ogologo, na ọnọdụ ala. N'oge ntinye curtain cutoff site na ngwakọta omimi ma ọ bụ jet grouting, tankị slurry na-ejide ihe mgbakwunye cement na mmiri na-asụ, na ikike nkewa dị mkpa iji gbochie clogging nke injection ports tupu oge eruo ma hụ na nkwukọrịta grout na-adịgide adịgide. Maka ọrụ secant pile na mgbidi sheet pile nke na-ejikọta compaction nke na-eme site na vibration ma ọ bụ njikwa mmiri ala, tankị ndị a na-ejide mmiri usoro na ihe ndị na-eme ka ọ dịkwuo mma na ọnụ ọgụgụ dabere na ọnụ ọgụgụ pile, ịdị omimi drilling, na mkpa ịkụ. N'ọrụ, tankị nchekwa slurry na-arụ ọrụ dị ka ụlọ nkwụsị ebe a na-ekewapụ ihe na obere ihe n'okpuru ibu, na-enye ohere ka mmiri dị ọcha wee gbanwee site na centrifuges, shakers, ma ọ bụ ngwa nkewa ndị ọzọ laghachi na circuit drilling/injection. Nchịkọta volium tank na-atụle ọnụego ịkụ (na-adịkarị 100–300 m³/h maka ọrụ drilling buru ibu), oge nkwụsị (30–120 nkeji dabere na rheology mmiri na ịchọrọ ịdị ọcha), na ogologo oge ọrụ. Nhazi tank kwesịrị ekwesị gụnyere baffle plates iji belata turbulence na short-circuiting, ọdụ ụgbọ mmiri dị n'elu sediment layers, na ụzọ overflow iji gbochie spillage n'oge ọnọdụ mmiri na-akarị na ihe omume ihu igwe. Tankị nchekwa dị na nhazi dị iche iche: tankị welded steel na-emepụta na 3–10 mm thickness plate maka ntọala permanent, tankị modular steel bolted (50–200 m³ units) na-ejikọta na saịtị na ngwa ngwa njikọ, na tankị akwa na-agbaji (polyvinyl ma ọ bụ polyethylene) maka ọrụ nwere ohere pere mpe ma ọ bụ mkpa ịkwaga elu. Ihe dị n'ime tank na-agbanwe nke ukwuu dabere na ụdị slurry: slurry cement nke nwere viscosity dị elu chọrọ agitation dị nro site na paddle mixers na-adịghị ọsọ ọsọ iji maintain suspension na-enweghị ịkpa njikọ nke ihe, ebe mmiri na-arụ ọrụ drilling nwere ike ịgụnye centrifugal segregators ma ọ bụ ponds nkwụsị nke jikọrọ na ihe tank. Nhọrọ nke ihe atụ gụnyere ikike a chọrọ dabere na mkpa ịkụ kwa ụbọchị na oge nkwụsị, nkwado ihe (slurries cement-bentonite chọrọ epoxy-lined ma ọ bụ stainless internals iji gbochie corrosion na contamination), okpomọkụ gburugburu (sistemụ ọkụ dị mkpa na ebe oyi iji maintain viscosity maka injection), na atụmatụ njikwa sludge (valves bottom dump, vacuum extraction, ma ọ bụ mechanical dredging). Ịkwado iwu na EN 1538 (mgbidi diaphragm), EN 14679 (jet grouting), na ụkpụrụ itinye ihe gburugburu ebe a na-eme ka ihe eji arụ tank na usoro ntinye. Ọrụ na ebe a na-emebi ma ọ bụ mpaghara mmiri dị oke nchebe nwere ike ịchọ nkwado nke abụọ ma ọ bụ usoro recycling nke mechiri emechi iji gbochie ịhapụ gburugburu na ntaramahụhụ iwu.