Umgaqo wokusebenza kunye nendlela yokusebenza yokujonga ngaphezulu kwefestile

1. Ulwakhiwo lwe-overshot enefestile

Ifestile engaphambili idityaniswe ngamacandelo amabini omzimba wesilinda kunye nejoyinti ephezulu (kwakhona iqhagamshelo olunemisonto)

Ngokweemfuno zokusindisa, isiphelo esisezantsi sesilinda singenziwa zibe zezi zakhiwo zine ezahlukeneyo zilandelayo:

(1) Ukusikwa kwe-semi-oblique ejikelezayo kulula ukuyijikelezisa nokungenisa intlanzi.

(2) Isihlangu sokusila esigobileyo silungele ukusila esisetiweyo ukuze kucocwe izinto eziqinileyo eziphezu kwentlanzi kwaye kukhokelwe intlanzi kuyo.

(3) Umlomo wentsimbi wekhowuni engaphakathi ulungele ukungeniswa ngqo kwentlanzi.

(4) Isiqwenga esimile okwesiqwenga. Dibanisa isiqwenga nesiqwenga esingaphezulu esinefestile ukuze uphucule impembelelo yokuloba.

2. Umgaqo wokusebenza we-overshot yefestile

Xa intlanzi ingena kwisilinda ize ityhale ulwimi lwefestile, ulwimi lwefestile luyakhula luphume, amandla ayo okujika alume umzimba wentlanzi ngokuqinileyo, kwaye ulwimi lwefestile nalo lubamba amanyathelo ngokuqinileyo, oko kukuthi, intlanzi iyabanjwa.

3. Indlela yokusebenza yokujonga ngaphezulu kwefestile

(1) Jonga ukuba imisonto okanye ii-welds zenxalenye nganye ziqinile kwaye aziguquki. Linganisa ukuba ubungakanani bolwimi lwefestile kunye nobubanzi obuncinci bangaphakathi bemeko evaliweyo bunokulingana nentlanzi, kwaye ugcine umfanekiso ukuze uphandwe ngakumbi.

(2)Grumba uye kuthi ga kwi-2 ~ 3m ngaphezulu kwentlanzi, uze uqalise ipompo ukuze uhlambe iqula. Jikelezisa kancinci intambo yokubhola ukuze uyithobe. Jonga utshintsho lwesikali sobunzima kunye nendawo yokungena yesikwere, khumbula ukuchukumisa intlanzi ukuze ingene, kwaye ukhokele isilinda ukuze ingene intlanzi.

(3) Qhubeka uthoba umtya wokubhola ukuze intlanzi ingene ngaphakathi komngxuma wesixhobo. Ukuba ubude bezinto eziwelayo bufutshane, umthombo unzulu, kwaye kunzima ukugweba indawo yokungena yesikwere kunye notshintsho lobunzima bokuxhonywa, umtya wokubhola ungaphakanyiswa nge-1-2m emva kokuloba kanye, uze ujikeleziswe kwaye wehliswe. Phinda amaxesha amaninzi ukuze uphakamise umbhobho.

(4) Xa uphakamisa idrill, kufuneka isebenze kakuhle. Musa ukuyichukumisa intlanzi uze ubethe intambo yokudrill ngequbuliso, ukuze ungayishukumisi intlanzi ize iwele equleni kwakhona.