Ngwá ọrụ Jet Grouting na-apụ apụ

Ngwaọrụ jet grouting na-emegharị na-emegharị bụ usoro ịkpụ na grouting nke nwere onwe ya, nke a na-etinye na tracks ma ọ bụ igwe, nke a na-eme ka ọ na-enye nrụgide mmiri dị elu n'ime ala maka mmezi ala, igbochi, na ịkwado. Ngwaọrụ ndị a jikọtara ọnụ na-eme ka ọ bụrụ otu ngwá ọrụ na-arụ ọrụ, nke na-ejikọta ụlọ ọrụ ike, usoro nrụgide hydraulic, mast drilling, na usoro njikwa na otu ikpo okwu na-emegharị, na-eme ka ọrụ jet grouting na-aga n'ihu na ebe ndị a na-achịkwa na ebe ndị siri ike ebe ngwaọrụ drilling nke a na-emegharị na-adịghị arụ ọrụ nke ọma. Na injinia ntọala miri emi, a na-eji ngwá ọrụ jet grouting na-emegharị nke ukwuu maka ịmepụta mkpuchi nke na-egbochi mmiri n'okpuru ntọala dam, n'okpuru ebe ndị nwere mmetọ, na n'akụkụ osimiri iji jikwaa mmiri na mmetọ. Ha dịkwa mkpa maka ịmepụta mkpuchi njikọ post-grouted na owuwu mgbidi diaphragm, na-enweta impermeability na njikọ panel na belata nrụgide hydrostatic na-arụ ọrụ na usoro mgbidi. Na mgbakwunye, ngwá ọrụ ndị a na-akwado nkwụsi ike ntọala site na ịkwaga ala na densification, karịsịa na deposits alluvial, silts, na sands ebe ntọala miri emi ọdịnala chọrọ mmezi ala. Jet grouting nke na-eme site na ngwá ọrụ na-emegharị na-enyekwa nkwado maka ìgwè pile dị, na-emezi ebe ndị nwere nsogbu nke ịda, na-emepụta mgbochi n'okpuru mmiri na gburugburu marine na lacustrine. Usoro ọrụ na-adabere na ịmepụta grouting slurry nke nwere nrụgide (na-emekarị bentonite-cement ma ọ bụ suspensions dabere na ciment) site na nozzle jetting na nrụgide na-adịkarị n'etiti 200 na 600 bar, na-emepụta kọlụm cylindrical ma ọ bụ conical nke ala emere ka ọ bụrụ nke a na-achịkwa na geometry na homogeneity. Onye na-arụ ọrụ na-achịkwa nrụgide injection, ọnụego mmiri, na ọsọ ịtụgharị iji jikwaa nha na ike nke mpaghara emere, ebe usoro na-emegharị na-enye ohere ka ngwá ọrụ nwee ọnọdụ ziri ezi n'elu ebe ọgwụgwọ ọ bụla ma na-aga n'ihu n'ụzọ sistematiki n'elu saịtị ọrụ. Usoro nyocha nrụgide na meters mmiri na-enye nzaghachi n'oge a na-eme ka ọ bụrụ na a na-enyocha ogo na traceability nke ọrụ ọgwụgwọ ọ bụla. Ngwaọrụ jet grouting na-emegharị dị na ọtụtụ nhazi: usoro nke etinyere na tracks maka ala dị nro ma ọ bụ compressible na-enweghị nnukwu mmebi elu; ụdị wheeled maka hardstanding na ụzọ ịnweta; ngwá ọrụ na-emegharị maka ebe nwere oke oghere; na ngwá ọrụ nwere nnukwu ikike maka ọrụ mkpuchi nnukwu. Ihe dị iche iche bụ ikike drilling depth (na-emekarị 10 ruo 40 mita), akara nrụgide injection (200–600 bar), ọnụego mmiri slurry (30–300 liters/nkeji), na mmepụta ụlọ ọrụ ike (75–250 kW), na ịhọrọ na-adabere na nkọwa imewe na ohere saịtị. Nhọrọ ngwá ọrụ na-adabere na ọtụtụ ihe: nrụgide injection na mkpa olu sitere na nyocha hydrogeological na geotechnical; stratigraphy na abrasiveness nke ala (na-achọpụta ọnụego erosion nozzle na ịdị elu ọgwụgwọ); ihe mgbochi ịnweta saịtị na ikike ala; usoro mmepụta na mpaghara ọgwụgwọ; na ịdị adị nke mmiri na logistics nke grouting. Ndị na-arụ ọrụ ga-enyocha nkwado na EN 1997-1 (Eurocode 7 design) na EN 12715 (ndị na-eme grouting) chọrọ, karịsịa banyere oke nrụgide injection maka strata ndị nwere mmetụta, nkọwa slurry na ịdịte aka, na usoro nyocha nrụgide iji kwado arụmọrụ mkpuchi. Ngwaọrụ ahụ ga-enye nsonaazụ ndị a na-emegharị, a na-enyocha ya na akwụkwọ zuru ezu nke nrụgide, mmiri, oge, na olu maka ebe injection ọ bụla—nke dị mkpa maka ịkọwa ebumnuche imewe na nnabata nkwekọrịta site na ndị injinia na-ahụ maka ndụmọdụ na ndị ọchịchị.