Ubunjiniyela banamuhla bomphakathi buncike ezintweni ezintsha zokwakha ukuze kwakhiwe ingqalasizinda eqinile, ehlala isikhathi eside, futhi engabizi kakhulu kunangaphambili. Phakathi kwemikhiqizo eguquguqukayo kakhulu ye-geosynthetic etholakalayo namuhla i-geogrid, into yokuqinisa esekelwe kupolymer eye yashintsha indlela onjiniyela ababhekana ngayo nezinhlelo zomhlaba oqinisiwe, ukwakhiwa kwemigwaqo, nokuqiniswa kwemithambeka. Noma ngabe uhlela ukunwetshwa komgwaqo omkhulu, udonga lokugcina umhlaba, noma isisekelo sokuthuthukiswa kwezohwebo, ukuqonda ubuchwepheshe be-geogrid kubalulekile ekulethweni kwezakhiwo ezihlala isikhathi eside neziphethe kahle. Kulo mhlahlandlela obanzi ovela ku-Geofantex Geosynthetics, sihlola ukuthi iyini i-geogrid, isebenza kanjani, izinhlobo ezahlukene ezitholakalayo, nokuthi kungani isebalulekile ekwakheni kwesimanje emhlabeni wonke. Ekugcineni, uzoba nomfanekiso ocacile wokuthi i-geogrid inganciphisa kanjani izindleko zephrojekthi, yandise isikhathi sokusebenza, futhi ithuthukise ukuphepha okuphelele ezinhlobonhlobo zezicelo zobunjiniyela.

I-geogrid iyimpahla ye-geosynthetic eyenziwe ngezinto ezisuselwa kupolymer ezifana ne-polypropylene (PP), i-high-density polyethylene (HDPE), noma i-polyester (PET), eyakhiwe ibe isakhiwo esifana negridi enezimbobo ezinkulu phakathi kwezimbambo. Lezi zimbobo zivumela i-aggregate, inhlabathi, noma itshe ukuthi zihlangane ne-geogrid, zakhe ungqimba oluzinzile ngokomshini oluthuthukisa kakhulu amandla okuthwala umthwalo womhlabathi. I-Geofantex ikhiqiza ama-geogrid ngezinhlobo eziningi ze-polymer ukuze ahambisane nezimo ezahlukene zemvelo: ama-PP geogrid anikeza amandla amahle kakhulu okudonsa futhi amelana namakhemikhali nokucekelwa phansi kwezinto eziphilayo, ama-HDPE geogrid anikeza ukuqina okumangalisayo ezimweni ezinolaka zenhlabathi, kanti i-polyester geogrid (PET) inikeza ukumelana okuphezulu nokukhula (creep) ngaphansi kwemithwalo esindayo eqhubekayo. Inqubo yokukhiqiza ngokuvamile ihilela ukukhipha ishidi le-polymer, ukubhoboza izimbobo, bese welula ishidi ngenye indlela noma izinkomba eziningi ukuze kuqondaniswe amaketanga amangqamuzana ukuze kutholakale amandla aphezulu. Le nqubo yokwelula yilokho ehlukanisa ama-geogrid e-uniaxial, biaxial, ne-triaxial, ngalinye liklanyelwe izidingo ezithile zokwakheka. Lapho onjiniyela becacisa i-geogrid yephrojekthi yabo, bakhetha umkhiqizo ozohlala usebenza amashumi eminyaka, ngisho nangaphansi kwemithwalo yezimoto enzima kakhulu, ukushintshashintsha kwezinga lokushisa, nokuchayeka emakhemikhali. Umphumela ungqimba lokuginisa olusebenza kahle kakhulu oluhlanganiswa kahle nenhlabathi ezungezile ukuze kwakhiwe into ehlangene eqine kakhulu kunazo zonke izingxenye ngazinye.

Ukusebenza kwe-geogrid kuncike ezindleleni ezintathu ezibalulekile: ukuxhumana kwemishini, ukuvinjelwa okuseceleni, kanye nesenzo solwelwesi olunwetshiwe. Uma itshe noma inhlabathi igcwalisa izimbobo ze-geogrid, izinhlayiya ziba zixhumene ngemishini nezinsimbi, kuvinjelwa ukunyakaza okuseceleni kwento yokugcwalisa. Lokhu kuxhumana kudlulisa imithwalo yokudonsa isuke enhlabathini iye ku-geogrid, okuvumela ukuqiniswa ukuthi kuthwale izingcindezi inhlabathi iyodwa engengakwazi ukuzimelana nazo. Njengoba izimoto noma izakhiwo zifaka umthwalo ebusweni, i-geogrid ivimbela itshe ukuba lingasakazeki ezinhlangothini, into eyaziwa ngokuthi ukuvinjelwa okuseceleni. Lokhu kuvinjelwa kugcina ungqimba lwesisekelo luqinile futhi luhlanganiswe kahle, kunciphisa kakhulu ukugqwala nokuguquka kwesimo ngokuhamba kwesikhathi. Ekufakeni izinhlelo zokusebenza ze-geogrid, into ngokuvamile ibekwa lapho kuhlangana khona inhlabathi engaphansi nengqimba eyisisekelo, noma phakathi kwezingqimba zokugcwalisa zomthambeka oqinisiwe noma udonga olubambayo. Lapho ukudonsa kukhula ngaphansi komthwalo, i-geogrid isebenza njengolwelwesi olunwetshiwe olusakaza umthwalo endaweni ebanzi, kunciphisa ingcindezi enhlabathini ebuthakathaka engezansi. Le ndlela ibaluleke kakhulu lapho kwakhiwa emhlabathini othambile, lapho inhlabathi engalashwa ingahluleka khona ngaphansi kwethrafikhi enzima yokwakha. Ngokusabalalisa imithwalo ezinhlangothini nangokuqondile, i-geogrid iguqula umhlaba ongenamsebenzi ube yipulatifomu yokusebenza ezinzile, ivumela ukwakha ukuba kuqhubeke ngaphandle kokumba okujulile okubizayo noma ukushintshwa kwenhlabathi. Ukusebenzisana kwezinto ezintathu phakathi kwezinhlayiya zenhlabathi nesakhiwo se-geogrid kwakha inhlanganisela eqinisiwe enkulu kunesamba sezingxenye zayo, inikeza onjiniyela ithuluzi elinamandla lokuthuthukisa inhlabathi nokuqinisa isakhiwo.

Ama-geogrid ahlukaniswa ngokuqondiswa kwamandla awo okudonsa, okunquma ukuthi asebenza kanjani ngaphansi kwezimo ezahlukene zomthwalo. Ama-uniaxial geogrid adonswa ngendlela eyodwa ngesikhathi sokukhiqizwa, ewenza abe namandla aphezulu okudonsa emugqeni owodwa, okwenza alungele izinhlelo ezinjengezindonga zokugcina umhlabathi, imithambeka emiqandile, kanye nemigwaqo ephakanyisiwe lapho umthwalo oyinhloko usebenza ngendlela eyodwa. Emaphrojekthini adinga ukuqiniswa ezinkombeni ezimbili eziqondile, ama-biaxial geogrid adonswa kokubili ngobude nangokuphambene, enikeza amandla alinganiselayo alungele ngokuphelele ukuqiniswa kwemigwaqo, ukuqiniswa kwesisekelo sikajantshi, kanye nokwesekwa kwesisekelo ngaphansi kwezindawo zokupaka nezitezi zezimboni. I-Geofantex inikeza uhla olugcwele lwama-PP biaxial geogrid aklanyelwe ukuhlangabezana nezidingo eziqinile zezikhungo zomgwaqo nosonkontileka bomphakathi emhlabeni wonke. Muva nje, ama-triaxial geogrid athole ukuthandwa ezinhlelweni zomgwaqo, ngoba ukwakheka kwawo kwezinkomba eziningi kunikeza ukuhlanganiswa kwamatshe okuthuthukisiwe nokusabalalisa umthwalo kuzo zonke izinkomba. Isakhiwo se-triaxial sakhiwa ngenqubo ekhethekile yokudonsa ekhiqiza iphethini yezimbobo ezingunxantathu, okucwaningo lubonise ukuthi inganciphisa ubukhulu besisekelo ngamaphesenti angafika ku-50 kweminye imiklamo yemigwaqo kuyilapho igcina ukusebenza okufanayo kwesakhiwo. Uhlobo ngalunye lwe-geogrid lunosayizi walo wezimbobo, ukwakheka kwezimbambo, amandla okuhlanganisa, nezici zokwelula okumele onjiniyela bazifanise nezimo zomhlabathi ezithile nezidingo zomthwalo zephrojekthi yabo. E-Geofantex, wonke umkhiqizo we-geogrid udlula ukuhlolwa kwekhwalithi okuqinile ukuze kuqinisekiswe izici zokudonsa ezihambisanayo, ukuzinza kobukhulu, nokuqina kwesikhathi eside ngaphansi kwezimo zangempela zomhlaba.

Ukusetshenziswa kwe-geogrid reinforcement kuletha izinzuzo ezinkulu kuyo yonke impilo yephrojekthi yokwakha, kusukela ekongeni kwezindleko ezinkulu ngesikhathi sokuqala kokwakha. Ngokuqinisa isakhiwo senhlabathi, i-geogrid ivumela onjiniyela ukuthi banciphise ubukhulu bezisekelo ze-aggregate ngamaphesenti angu-30 kuya kwangu-50, okwehlisa ngqo izindleko zokuthutha izinto, zokucindezela, kanye nezabasebenzi. Ezindaweni ezithambile ezingaphansi, ukusetshenziswa kwe-geogrid kungaqeda isidingo sokumba okujulile nokushintsha inhlabathi empofu, konga izinkulungwane zamadola ngekhilomitha ngalinye lomgwaqo. Ukuqina kungenye inzuzo enkulu: ama-geogrid asezingeni eliphezulu akwaGeofantex enziwe ukuthi amelane nokonakala kwamakhemikhali, ukuwohloka kwe-ultraviolet, ukubola kwezinto eziphilayo, kanye nokushintsha kwezinga lokushisa, okuqinisekisa ukuthi ukuqinisa kuyaqhubeka nokusebenza kuyo yonke iminyaka yokuphila kwesakhiwo, ngokuvamile kudlula iminyaka engu-50 ekusetshenzisweni okuklanywe kahle. Ngokombono wezemvelo, i-geogrid inomthelela ekusimameni ngokunciphisa ukusetshenziswa kwe-aggregate entsha, ukwehlisa ukukhishwa kwekhabhoni ekuthuthweni kwezinto, nokunciphisa imfucumfucu yokwakha. Amaphrojekthi afaka i-geogrid nawo athola ishejuli yokwakha esheshayo ngoba isikhathi esincane sichithwa ekwelapheni inhlabathi nasekucindezeleni, futhi ungqimba oluqinisiwe lungavame ukusekela ukuhamba kwezokwakha ngokushesha ngemva kokufakwa. Izindleko zokunakekela zincishiswa kakhulu esikhathini eside ngoba imigwaqo eqiniswe nge-geogrid iba ne-rutting encane, ukuqhekeka okuncane, nokuhlala phansi okungalingani uma kuqhathaniswa nezingxenye ezingaqiniswanga. Kubanikazi nabasebenzisi bempahla yengqalasizinda, lokhu kongwa kukhula unyaka nonyaka, okwenza i-geogrid ibe ngenye yezimali ezinzuzo kakhulu kubunjiniyela bomphakathi wanamuhla.

Ukusebenza okuhlukahlukene kwe-geogrid kuyenza ifanelekele uhla olubanzi kakhulu lwezinhlelo zokuqinisa umhlabathi ezihlanganisa ezokuthutha, ezemvelo, zamandla, kanye nokuthuthukiswa kwamadolobha. Ekwakhiweni kwemigwaqo, i-geogrid ibekwa phakathi kwe-subgrade ne-base course ukuze kuthuthukiswe ukusabalalisa umthwalo, kuvinjwe ukufuduka kwe-aggregate, futhi kwandiswe ukuphila kwepavement ngaphansi kwethrafikhi enzima yamaloli. Ezindongeni zokugcina (retaining walls) kanye nezindonga ze-MSE (mechanically stabilized earth), izingqimba ze-uniaxial geogrid zibekwa ngaphakathi kwe-backfill ngezikhathi ezilinganayo zokuqhela ukuze kwakhiwe ubuso bodonga oluzinzile, oluzisekelayo olungaqedwa ngamaphaneli kakhonkolo, ubuso bamabhlogo, noma imithambeka enotshani. Ukuqiniswa kwemithambeka emihle (steep slope reinforcement) kungenye indawo ebalulekile lapho i-geogrid yenza ukwakhiwa kwemithambeka emihle kunalokho umhlabathi ungawela ngokwemvelo, kwandise ukusetshenziswa komhlaba emigwaqweni emikhulu, kojantshi, nasekusebenziseni izimayini. Ukuzinziswa kwe-subgrade kajantshi kuzuzisa kakhulu kuma-biaxial nama-triaxial geogrids avimbela ukusabalala kwe-ballast ngaphansi komthwalo wezitimela ophindaphindayo, kunciphisa ukulungiswa kojantshi futhi kuthuthukise ikhwalithi yokugibela. Umhlabathi wesisekelo ngaphansi kwezakhiwo, amathangi okugcina, nezitezi zezimboni uqiniswa nge-geogrid ukuze kwandiswe amandla okuthwala futhi kuncishiswe ukuhlala okungalingani komhlabathi, ikakhulukazi lapho ukwakhiwa kwenzeka ezindaweni ezingezinhle noma eziguquguqukayo. I-Geofantex ihlinzeka ngezixazululo ze-geogrid ezikhethekile kuleyo naleyo ndawo yokusebenza, isekelwa usizo lwezobuchwepheshe nokuqondiswa kobunjiniyela ukuze kusizwe osonkontileka nabaklami ukukhetha umkhiqizo ofanele kakhulu wezimo zabo ezithile zendawo kanye nezidingo zokusebenza.

Nakuba i-geogrid ne-geotextile zombili ziyizinto ze-geosynthetic ezisetshenziswa kwezobunjiniyela bomphakathi, zisebenza imisebenzi ehluke ngokuyisisekelo futhi akufanele zisetshenziswe ngokushintshana. Ama-geotextile ayizindwangu ezingenawo amanzi (permeable) enza imisebenzi yokuhlukanisa, yokuhlunga, yokukhipha amanzi, nokuvikela, evimbela ukuxubana kwezingqimba zezihlabathi ezahlukene futhi avumela amanzi ukuba adlule ngenkathi egcina izinhlayiya zomhlabathi. Ama-geogrid, ngokuphambene, ayizinto zokuqinisa ngokuyinhloko ezinamandla amakhulu okudonsa nokuqina, aklanyelwe ukuthwala imithwalo yokudonsa nokuzinzisa ngokomshini izinqwaba zomhlabathi nezamatshe. Emiklamweni eminingi yokwakha, lezi zinto ezimbili zisetshenziswa ndawonye ngendlela ehambisanayo: i-geotextile ingabekwa ngqo phezu komhlabathi ongaphansi ukuze ihlukanise futhi ihlunge, kuyilapho i-geogrid ibekwa ngaphakathi noma ngaphezulu kwengqimba eyisisekelo ukuze inikeze ukuqinisa. Isibonelo, emsebenzini wokwakha umgwaqo phezu kobumba oluthambile, i-i-nonwoven geotextileingase zibekwe phezu kwe-subgrade ukuze kuvinjelwe ukumpompa kwezinhlayiya ezincane zingene kungqimba lwe-aggregate, kuyilapho i-biaxial geogrid ifakwa ngaphakathi kwe-base course ukuze isabalalise imithwalo yezimoto futhi inciphise ukuguguleka kwemigwaqo. Ukuqonda ukuthi kufanele ucacise nini i-geogrid uma kuqhathaniswa ne-geotextile — nokuthi kufanele zisetshenziswe zombili nini — kubalulekile ekwakheni izixazululo ze-geosynthetic ezingabizi kakhulu, eziphila isikhathi eside. I-Geofantex ikhiqiza zombili lezi zinhlobo zemikhiqizo, okuvumela onjiniyela ukuthi bathole zonke izidingo zabo ze-geosynthetic kumthengi owodwa othembekile onokulawulwa kwekhwalithi okuqinisekisiwe yi-ISO kanye neminyaka eminingi yobungcweti embonini.ukuqiniswa komhlabathi ubuchwepheshe.

Lapho ukhetha umhlinzeki we-geogrid wamaphrojekthi abalulekile engqalasizinda, ikhwalithi, ukuvumelana, nobuchwepheshe obunolwazi akukwazi ukuxoxisana. I-Geofantex Geosynthetics isungule ukuthi ingumkhiqizi ohamba phambili wama-geogrid asebenza kahle kakhulu, isebenzela osonkontileka, onjiniyela, kanye nezinhlaka zikahulumeni emhlabeni wonke kusukela ngo-2014. Wonke umkhiqizo we-geogrid — kusukela ku-ama-geogrid e-PP uniaxial kanye nama-geogrid e-biaxial kuya ku-ama-geogrid e-triaxial plastic kanye nama-geogrid e-polyester—kwenziwa ngaphansi kwezinqubo eziqinile zokulawula i-ISO ngokulandeleka okugcwele kusukela kuzinto ezingavuthiwe kuya kwiroli yokugcina. I-Geofantex itshala imali ocwaningweni nasekuthuthukisweni okuqhubekayo ukuze ithuthukise ukusebenza kwe-geogrid, okuhlanganisa nentuthuko ekwakhiweni kwepholima, i-aperture geometry, kanye nokusebenza kahle kwe-junction okuhumushela ngqo ekusebenzeni okungcono emkhakheni kumakhasimende. Ithimba lobuchwepheshe lenkampani lisebenza eduze nonjiniyela bamaphrojekthi ukuze lincome uhlobo olufanele lwe-geogrid, izinga lamandla, nendlela yokufaka esetshenziswayo kusetshenziswa ngalunye oluhlukile, liqinisekisa ukuthi izinhloso zokuklama ziyafezeka kuyilapho kuncishiswa izindleko zezinto zokwakha. Ngohlelo lomhlaba wonke lokuthutha impahla kanye nekhono lokukhiqiza ubukhulu beroli obungokwezifiso kanye nokucaciswa kwamandla, i-Geofantex iletha izixazululo ze-geogrid ezihlanganiswe ngqo nezidingo zephrojekthi. Uma ukhetha i-Geofantex, ukhetha uzakwethu ozinikele empumelelweni yokutshalwa kwakho kwengqalasizinda, usekelwa yimikhiqizo efakazelwe nobuchwepheshe obujulile.geogrid ubunjiniyela.

Ubuchwepheshe be-geogrid bushintshe ngokuyisisekelo indlela onjiniyela ababhekana ngayo nokuqiniswa kwenhlabathi, ukwakhiwa kwemigwaqo, nokugcinwa komhlaba, okwenza kube nokwenzeka ukwakha ingqalasizinda eqinile, ephephile, futhi esimeme emhlabathini obukade ubhekwa njengongafaneleki ukuthuthukiswa. Kusukela ekuhlanganisweni kwemishini yezinhlayiya zamatshe kuya ekuvinjelweni okuseceleni okuvimbela ukusabalala kwesendlalelo esiyisisekelo, i-geogrid inikeza ukuthuthuka okufakazelwe, okulinganisekayo ekusebenzeni kwesakhiwo okuhumushela ekongeni kwezindleko kwangempela nokuphila isikhathi eside kwesevisi. Njengoba izidingo zokwakha zikhula futhi umhlaba otholakalayo uba inselele kakhulu, ukubaluleka kwezixazululo ezinokwethenjelwa zomhlaba oqinisiwe kuzokwanda kuphela. Noma ngabe wenza umgwaqo omkhulu okufanele uthwale iminyaka eminingi yezimoto ezisindayo, udonga olugcinayo oluvikela ingqalasizinda ebalulekile, noma uhlelo lwesisekelo sentuthuko entsha yezohwebo, i-geogrid evela ku-Geofantex Geosynthetics inikeza ukusebenza, ukuqina, kanye nenani elidingwa amaphrojekthi anamuhla. Ngokuqonda izinhlobo ezahlukene, ukusetshenziswa, nezindlela zokufaka ze-geogrid, ungathatha izinqumo ezinolwazi ezithuthukisa imiphumela yephrojekthi futhi zinciphise imithwalo yokugcina isikhathi eside. Ngokweluleka kwezobuchwepheshe, imininingwane yomkhiqizo, noma izincomo eziqondene nephrojekthi, ithimba lase-Geofantex likulungele ukusekela inselele yakho elandelayo yobunjiniyela ngezixazululo ze-geosynthetic ezisezingeni eliphezulu ezimelana nesikhathi.