I-Road Milling: Kuyini? Isebenza kanjani?

Ukugaya imigwaqo kungathathwa njengokugaya i-pavement, kodwa kungaphezu nje kokuvula imigwaqo. Namuhla, sizongena emhlabeni wokugaywa komgwaqo futhi sifunde imininingwane enemininingwane efana nemishini, izinzuzo, nokunye.

Kuyini Ukugaywa Komgwaqo/Ukugaywa Komgwaqo?

I-Pavement milling, ebizwa nangokuthi i-asphalt milling, i-cold milling, noma i-cold planing, inqubo yokususa ingxenye yendawo egandayiwe, ehlanganisa imigwaqo, imigwaqo eshayelayo, amabhuloho, noma izindawo zokupaka. Ngenxa yokugaya i-asphalt, ukuphakama komgwaqo ngeke kwande ngemva kokubeka i-asphalt entsha futhi wonke umonakalo okhona wesakhiwo ungalungiswa. Ngaphezu kwalokho, itiyela elidala elisusiwe lingaphinde lisetshenziswe njengenhlanganisela kwamanye amaphrojekthi omgwaqo. Ukuze uthole izizathu ezinemininingwane eyengeziwe, vele ufunde!

Izinjongo Zokugaya Umgwaqo

Kunezizathu ezimbalwa zokukhetha indlela yokugaya umgwaqo. Esinye sezizathu ezibaluleke kakhulu ukugaywa kabusha. Njengoba kushiwo ngenhla, itiyela elidala lingaphinde lisetshenziswe njengenhlanganisela yamaphrojekthi amasha omgwaqo. I-asphalt egaywe kabusha, eyaziwa nangokuthi i-asphalt egayiwe kabusha (i-RAP), ihlanganisa itiyela elidala eligayiwe noma elichotshoziwe kanye netiyela elisha. Ukusebenzisa itiyela eligaywe kabusha esikhundleni setiyela elisha ngokuphelele endaweni egandayiwe kunciphisa udoti omkhulu, konga imali eningi kumabhizinisi, futhi kunciphisa imithelela emibi endaweni ezungezile.

Ngaphandle kokugaywa kabusha, ukugaywa komgwaqo kungaphinda kuthuthukise ikhwalithi yezindawo zomgwaqo futhi kunwebe impilo yesevisi, ngaleyo ndlela kuthuthukise umuzwa wokushayela. Izinkinga ezithile ezingaxazululwa yi-pavement milling ukungalingani, ukulimala, ukugqwala, ukuganga, nokopha. Ukulimala komgwaqo kuvame ukudalwa izingozi zezimoto noma imililo. I-Rutting isho izintambo ezibangelwa ukuhamba kwamasondo, njengamaloli agcwele kakhulu. I-Raveling isho inhlanganisela ehlukaniswe enye kwenye. Lapho itiyela likhuphukela phezu komgwaqo, kuphuma igazi.

Ngaphezu kwalokho, ukugaya umgwaqo kulungele ukudala ama-rumble strips.

Izinhlobo Zokugaya Umgwaqo

Kunezinhlobo ezintathu eziyinhloko zokugaywa komgwaqo zokubhekana nezinhlobo ezahlukene zezimo. Imishini ekhethekile namakhono adingekayo endleleni ngayinye yokugaya ngokufanele.

I-Fine-Milling

I-fine Milling isetshenziselwa ukuvuselela ungqimba olungaphezulu lwe-pavement kanye nokulungisa umonakalo ongaphezulu. Inqubo imi kanje: susa i-asphalt engaphezulu eyonakele, lungisa umonakalo oyisisekelo, futhi umboze indawo nge-asphalt entsha. Khona-ke, bushelelezi futhi uhlele ngaphandle kwe-asphalt entsha.

Ukuhlela

Ngokuhlukile ekugayweni okuhle, ukuhlela kuvame ukusetshenziswa ekulungiseni izakhiwo ezinkulu njengemigwaqo emikhulu. Inhloso yawo ukwakha indawo esezingeni elifanele yezindawo zokuhlala, ezezimboni, ezezimoto, noma ezentengiso. Inqubo yokuhlela ihlanganisa ukususa yonke indlela egandayiwe eyonakele esikhundleni sokusebenzisa indawo engaphezulu kuphela, ukusebenzisa izinhlayiya ezikhishiwe ukuze kwakhiwe i-aggregate, nokusebenzisa i-aggregate ku-pavement entsha.

I-Micro-Milling

Ukugaya okuncane, njengoba negama liphakamisa, kususa ungqimba oluncane (cishe iyintshi eyodwa noma ngaphansi) yetiyela esikhundleni sayo yonke indawo noma indawo egandayiwe. Inhloso enkulu yokugaya i-micro iwukunakekela kunokulungisa. Lena indlela enhle kakhulu yokuvimbela ukugandaya ukuthi kungabi kubi kakhulu. Isigubhu sokugaya esijikelezayo sisetshenziswa ekugayweni okuncane, okunamazinyo amaningi okusika anesihloko se-carbide, amazinyo okugaya umgwaqo, afakwe esigubhini. Lawa mazinyo okugaya ahlelwe ngemigqa ukuze akhe indawo ebushelelezi. Kodwa-ke, ngokungafani nezigubhu ezivamile zokugaya, ukugaya okuncane kugaywa kuphela phezulu kuze kufike ekujuleni okungashoni, kodwa kuxazulule izinkinga zomgwaqo ezifanayo.

Inqubo & Imishini

Umshini wokugaya obandayo wenza i-pavement milling, ebizwa nangokuthi i-cold planer, ikakhulukazi ehlanganisa isigubhu sokugaya kanye nesistimu yokuthutha.

Njengoba kushiwo ngenhla, isigubhu sokugaya sisetshenziselwa ukususa nokugaya indawo ye-asphalt ngokujikeleza. Isigubhu sokugaya sizungeza ngakolunye uhlangothi lapho umshini uhamba khona, futhi ijubane liphansi. Iqukethe imigqa yezibambi zamathuluzi, ephethe amazinyo okusika anesihloko se-carbide, akaamazinyo okugaya umgwaqo. Ngamazinyo ahlabayo empeleni asike i-asphalt surface. Ngenxa yalokho, amazinyo okusika kanye nezibambi zamathuluzi ziguga kalula futhi zidinga ukushintshwa lapho ziphukile. Izikhawu zinqunywa impahla yokugaya, kusukela emahoreni kuya ezinsukwini. Inani lamazinyo okugaya emgwaqweni lithonya ngokuqondile imiphumela yokugaya. Okuningi, bushelelezi.

Ngesikhathi sokusebenza, i-asphalt esusiwe iwela ku-conveyor. Khona-ke, isistimu yokuthutha idlulisela itiyela elidala eligayiwe elolini elishayelwa umuntu elingaphambi kancane kweplanethi ebandayo.

Ngaphezu kwalokho, inqubo yokugaya ikhiqiza ukushisa nothuli, ngakho-ke amanzi asetshenziselwa ukupholisa isigubhu nokunciphisa uthuli.

Ngemuva kokuthi indawo ye-asphalt igaywe ibe ububanzi obudingekayo nokujula, idinga ukuhlanzwa. Ngemuva kwalokho, i-asphalt entsha izobekwa ngokulinganayo ukuze kuqinisekiswe ukuphakama okufanayo kwendawo. Itiyela elikhishiwe lizophinde lisetshenziswe kumaphrojekthi amasha omgwaqo.

Izinzuzo

Kungani sikhetha ukugaya itiyela njengendlela ebalulekile yokulungiswa komgwaqo? Sishilo ngenhla. Manje, ake sixoxe kabanzi ngezizathu ezibalulekile.

Ukuphumelela Okungabizi Nezomnotho

Ngenxa yokusebenzisa itiyela eligaywe kabusha noma elitholiwe kabusha, izindleko ziphansi kakhulu kungakhathaliseki ukuthi iyiphi indlela yokugaya oyikhethayo. Osonkontileka abalungisa imigwaqo bavamise ukonga itiyela egaywe kabusha kumaphrojekthi adlule. Ngale ndlela kuphela, bayakwazi ukunciphisa izindleko futhi basanikeza isevisi enhle kumakhasimende.

Ukusimama kwemvelo

Itiyela elikhishiwe lingaxutshwa nezinye izinto futhi lisetshenziswe kabusha, ngaleyo ndlela ngeke lithunyelwe ezindaweni zokulahla imfucumfucu. Empeleni, amaphrojekthi amaningi okugandaywa nokulungisa imigwaqo asebenzisa itiyela eligaywe kabusha.

Azikho Izinkinga Zokuphakama Kwamapayipi kanye Nomzila Wendlela

Ukwelashwa okusha okungaphezulu kungakhuphula ukuphakama kwendlela yokuhamba futhi kubangele izinkinga zokuphuma kwamanzi. Ngokugaywa kwetiyela, asikho isidingo sokwengeza izendlalelo ezintsha eziningi phezulu futhi ngeke kube nezinkinga zesakhiwo njengokonakala kokukhipha amanzi.

UPlatoungumphakeli oqinisekisiwe we-ISO wamazinyo okugaya umgwaqo. Uma unesidingo, vele ucele ikhotheshini. Abathengisi bethu abangochwepheshe bazofinyelela kuwe ngokuhamba kwesikhathi