Rigs Jet Grouting Tunnel

Ngwá ọrụ Jet Grouting Tunnel Ngwá ọrụ jet grouting tunnel bụ usoro ngwá ọrụ pụrụ iche nke a haziri iji mee ka ọrụ itinye jet grouting na nrụgide dị elu na gburugburu ala, karịsịa maka nrụpụta tunnels, nkwado excavations, na nkwado ala na oghere ala na-erughị ala. Usoro ndị a na-etinye grout na-emepụta nrụgide site na nozzles ziri ezi n'ime ala na nkume, na-emebi ma na-eme ka ihe dị na ya na njikọ cementitious iji mepụta kolọm ala a na-emepụta na ike nkwado ka mma, ịbelata permeability, na njikọ mechanical. Na injinịa ntọala miri emi, ngwá ọrụ jet grouting tunnel na-arụ ọrụ dị mkpa maka mmezi ala tupu nrụpụta, nkwado post-excavation, na ịmepụta mkpuchi cut-off iji chịkwaa mmiri ala na-agba site na strata na-adịghị ike ma ọ bụ permeable. Ngwá ọrụ jet grouting tunnel na-arụ ọrụ na ngwa ala dị iche iche. Ihe ndị a na-eji bụ jet grouting maka nkwado ihu tunnel na injections pilot, ịmepụta kolọm jet grouting kwụ ọtọ na kwụ ọtọ iji kwado mgbidi tunnel ma gbochie ịda oghere, itinye mkpuchi na-adịghị permeable gburugburu excavations ala, imezi nkume na-adịghị mma na gburugburu akụkụ tunnel, na mgbidi permeability na mpaghara karst. Ngwá ọrụ ndị a dị mkpa na tunneling obodo ebe a ga-ebelata vibration na mkpọtụ, na na ala saturated ebe usoro mgbidi diaphragm ọdịnala na-eweta nsogbu logistics. Ngwaọrụ na-agbasa na grouting consolidation n'okpuru ihe ndị dị na elu mgbe tunnel na-aga n'ihu na ike ala tupu ọrụ tunneling shield. Usoro ọrụ na-adabere na usoro itinye nrụgide dị elu, nke na-ejikarị piston ma ọ bụ centrifugal pump nwere ike ịpụta nrụgide 350–800 bar, na-enye grout site na mast drilling telescoping na monitor na-agba na otu, abụọ, ma ọ bụ atọ nozzles itinye. Mast drilling na-ejide nozzle array na njikọ spatial ziri ezi n'ime tunnel, na ikike ịgbanwe nke monitor na-enye ohere maka ntụziaka nozzle kwụ ọtọ na kwụ ọtọ iji mepụta usoro kolọm. Ka mast na-apụ apụ, jet na-agba ọsọ (na-adịkarị 200+ m/s na nozzle exit) na-emebi ala na nkume gburugburu ebe na-emepụta ya na slurry grout, na-eduga na kolọm ala-cement a na-emepụta. Nrụgide na ọnụego wepụ na-achịkwa nha kolọm, nke na-adịkarị 0.8–2.5 m dabere na ụdị ala na nhazi nozzle. Ngwaọrụ nhazi na-adị iche iche site na ọnọdụ ntinye. Usoro nozzle otu na-enye njikwa ziri ezi maka ọgwụgwọ a tụrụ anya; nhazi nozzle abụọ na atọ na-eme ka ịmepụta kolọm na-eme ngwa ngwa ma belata oge ọrụ. Masts drilling na-adịkarị na sistemụ na-ebugharị ma ọ bụ wheeled iji kwado ịnyagharịa n'ime akụkụ tunnel, ebe ntinye kwụ ọtọ na-eji ebe a chọrọ ka a nweta ugboro ugboro na mpaghara ọgwụgwọ. Ngwá ọrụ compact pụrụ iche na-emepụta maka tunnels nwere ala dị ala; usoro modular na-enye ohere maka ịkpụ na ịmepụta na chambers launch na-erughị ala. Ngwá ọrụ mixing grout bụ akụkụ dị mkpa, na-ejikarị mixers colloidal ma ọ bụ ngwaọrụ high-shear iji nweta slurry homogeneous na retention nke aggregates nta na viscosity kwesịrị ekwesị maka penetration jet n'okpuru ala. Nhọrọ maka ngwá ọrụ jet grouting tunnel na-elekwasị anya na nrụgide ọrụ kachasị, nha nozzle kachasị nta, miri emi drilling na iru n'ime geometry tunnel, ntụkwasị obi na ịlaghachi nke monitor, consistency nke nkwado grout, na adaptability na gburugburu ebe a na-erughị ala. Ọtụtụ akụrụngwa—gụnyere njikwa kọmputa na-eme ka mast na-ejide, njikwa ọsọ wepụ, na monitoring nrụgide—na-abawanye na ụkpụrụ, na-enye ohere maka geometry kolọm ziri ezi na ndekọ nke mmezu ọgwụgwọ. Nkwenye ngwá ọrụ n'okpuru usoro ọrụ ogologo oge na ikike ịkwụsị mberede bụ ihe dị mkpa na gburugburu tunnel na-arụ ọrụ. Ụkpụrụ ndị metụtara gụnyere EN 12715 (nrụpụta ọrụ geotechnical pụrụ iche: grouting), EN ISO 13286 (ihe na-adịghị ejikọ na ihe na-ejikọta hydraulic—Part 3: jet grouting), na DIN 4093 (jet grouting), nke na-akọwa ihe a chọrọ, njikọ ihe, na usoro njikwa àgwà. Nrụpụta ala pụrụ iche na tunnel na-achịkwa site na EN 14679 (nrụpụta jet grouting miri emi) na ụkpụrụ ụlọ na iwu mmanụ nke mba dị mkpa.