Ụlọ ọrụ na ngwá ọrụ Jet Grouting

Ụlọ ọrụ jet grouting na ngwaọrụ bụ usoro pụrụ iche nke a na-eme ka ha kwadebe, mepụta nrụgide, na ntinye nke grout simenti ma ọ bụ kemịkal na ọsọ dị elu n'ime ala iji mepụta ụkwụ simenti na ihe mgbochi na-aga n'ihu. Ngwaọrụ ndị a bụ ihe dị mkpa na injinịa ntọala miri emi nke oge a, na-enye ohere maka imezi ala, njikwa mmiri ala, na ịkwalite nkwụsi ike nke ihe owuwu na ọnọdụ ala siri ike. Ụlọ ọrụ jet grouting bụ isi ihe igwe nke usoro jet grouting, na-agbanwe grout ọdịnala n'ime medium ntinye nke nwere ike ịgbanwe ma jikọta na ala a na-emekarị na miri emi na nrụgide nke na-agbasa ikike grout ọdịnala. Na ngwa ntọala miri emi, a na-eji ụlọ ọrụ jet grouting eme ihe maka iwulite ihe mgbochi nke na-ejide mmiri ala, na-akwado ala ndị nwere mmiri, na igbochi liquefaction na mpaghara seismic. A na-eji ha eme ihe n'ozuzu maka ịkwado ntọala dị adị, iwulite mgbidi secant na tangent, na-akwado slopes, na-emeziwanye ikike nkwado nke ala na-adịghị ike. Na iwulite mgbidi diaphragm, ụlọ ọrụ jet grouting nwere ike inyere na ọgwụgwọ ala tupu excavation. Na mgbakwunye, ha na-arụ ọrụ dị mkpa na ọrụ ndozi, na-eme ka ala dị gburugburu ngwaọrụ ndị dị n'okpuru ala sie ike, na-ejupụta oghere n'okpuru ihe ndị chọrọ ịtọgharị. Usoro ọrụ nke ụlọ ọrụ jet grouting na-ejikọta ntinye grout nke na-arụ ọrụ na nrụgide dị elu. A na-eme grout na units mixing nke nwere mixers paddle ma ọ bụ colloidal na-eme ka slurry consistency bụrụ nke homogeneous. Pumps na-emegharị na-eme ka grout nwee nrụgide na-arụ ọrụ nke na-adịkarị n'etiti 200 ruo 600 bar, n'agbanyeghị na usoro pụrụ iche nwere ike inweta nrụgide dị elu. A na-ewepụta grout na-arụ ọrụ na monitors jetting—ngwa ntinye na-arụ ọrụ site na drilling rigs—nke na-ewepụta mmiri site na nozzles nke nwere diamita nta, na-emepụta jet nke na-efepụ ala na na-eme ka grout banye n'ime oghere ndị a na-emepụta site na efepụ jet. A na-ewepụ monitor jetting n'oge a na-eme ụkwụ, na onye na-arụ ọrụ na-achịkwa n'ụzọ dị mfe ntụgharị na ọsọ mgbapụ iji nweta geometry ụkwụ a tụrụ aro na homogeneity. Nhazi ụlọ ọrụ jet grouting na-agbanwe site na ihe ndị a na-achọsi ike. Usoro mmiri otu na-etinye grout na nrụgide dị elu naanị ma dabara na ala na-ejikọta. Usoro mmiri abụọ na-ejikọta ikuku na grout ntinye, na-eme ka nnyefe ike na penetration depth ka mma, nke na-abara uru karị na ala granular. Usoro mmiri atọ na-ewepụta jet mmiri dị iche, na-enye njikwa geometry ụkwụ ka mma na ikike miri emi. Ụlọ ọrụ mixing na-agbanwe site na units trailer-mounted nke nwere ike ịrụ ọrụ na saịtị na-adịghị mma ruo na ntọala kwụsiri ike nke nwere ike ijikwa nnukwu ọrụ. Ngwaọrụ pump na-eji piston pumps, screw pumps, ma ọ bụ jet pack aggregates, nke ọ bụla na-enye njirimara nrụgide-volume dị iche iche nke a na-adabere na ọnọdụ ala na nha ọrụ. Nhọrọ nke ụlọ ọrụ jet grouting kwesịrị ịdabere na ọtụtụ ihe ndị na-emetụta: miri emi na nrụgide ntinye a chọrọ nke a tụrụ aro site na stratigraphy ala na nkọwa imewe; njirimara ihe grout, karịsịa viscosity na njirimara hydration; mkpa diamita ụkwụ; ọnụego mmepụta a tụrụ aro; na ohere saịtị maka ịkwado ngwaọrụ. Ndị na-arụ ọrụ ga-atụle nkewa ala, permeability, na ọnọdụ saturation mgbe ha na-achọpụta ma jetting mmiri otu, abụọ, ma ọ bụ atọ bụ nke kachasị mma. Mobility nke ngwaọrụ na-abụ ihe dị mkpa na gburugburu ebe obibi ma ọ bụ ọrụ nwere ihe mgbochi. Ụkpụrụ ụlọ ọrụ na-achịkwa ọrụ jet grouting gụnyere EN 12716, nke na-enye nkọwa, ụkpụrụ imewe, na ihe a chọrọ maka jet grouting na injinịa ala. ISO 4465 na-enye nduzi na okwu na omume grouting. Ndị na-enye ngwaọrụ na-ezo aka na DIN 4125 maka ihe a chọrọ maka grouting nrụgide na na-ejide na nkọwa nke ndị na-emepụta banyere nrụgide kachasị elu na njedebe rheological grout. Ime ihe ọkachamara na-achọ asambodo onye na-arụ ọrụ, usoro nkwado mma, na nyocha nke ọma nke ịdị mma ụkwụ site na ndekọ drilling na nyocha ụlọ ọrụ nke samples a nwetara.