1. Izici nobungozi bongqimba lwesihlabathi nodaka
Lapho kubhobozwa izimbobo esihlabathini esihle noma enhlabathini enodaka, uma izinga lamanzi angaphansi komhlaba liphakeme, udaka kufanele lusetshenziselwe ukwakha izimbobo zokuvikela udonga. Lolu hlobo lwe-stratum kulula ukulugeza ngaphansi kwesenzo sokugeleza kwamanzi ngoba akukho ukunamathela phakathi kwezinhlayiya. Ngenxa yokuthi umshini wokumba ojikelezayo uthatha ngokuqondile inhlabathi uwuyise emgodini, inhlabathi ebhoboziwe igaywa kabusha ngebhakede lokubhoboza phansi. Ibhakede lokumba lihamba odakeni, futhi isivinini sokugeleza kwamanzi ngaphandle kwebhakede lokumba sikhulu, okulula ukubangela ukuguguleka kodonga lwembobo. Isihlabathi esigezwe ngodonga lwembobo sinciphisa nakakhulu umphumela wokuvikela odongeni lodaka lokuvikela udonga. Kungenzeka kakhulu ukuthi kubangele izinkinga ezinjengokuvikela intamo kanye nokuwa kwembobo.
2. Lapho indlela yokwakha yokumba i-rotary isebenzisa ukuvikelwa kodonga lodaka esihlabathini esihle sokuqala noma ungqimba lwenhlabathi enodaka, lezi zinyathelo ezilandelayo kufanele zicatshangelwe:
(1) Nciphisa kahle ijubane lokwehlisa nokudonsa le-drill bit, unciphise izinga lokugeleza kodaka phakathi kwebhakede lokubhoboza nodonga lwembobo, futhi unciphise ukuguguleka.
(2) Khulisa ngokufanelekile i-Angle yamazinyo okubhoboza. Khulisa isikhala phakathi kodonga lwembobo nodonga oluseceleni lwebhakede lokubhoboza.
(3) Ukwandisa ngokufanelekile indawo yomgodi wamanzi ebhakedeni lokumba, unciphise ukucindezela okungalungile phezulu nangaphansi kwebhakede lokumba ngesikhathi senqubo yokukhipha, bese unciphisa izinga lokugeleza kodaka emgodini omncane.
(4) Lungiselela izinga eliphezulu lokuvikela udonga lodaka, ulinganise ngesikhathi esifanele okuqukethwe kwesihlabathi sodaka emgodini. Thatha izinyathelo ezisebenzayo ngesikhathi lapho weqa izinga.
(5) Hlola ukucinana kwekhava engezansi yebhakede lokubhoboza ngemva kokuvala. Uma kutholakala ukuthi igebe elibangelwa ukuhlanekezela likhulu, kufanele lilungiswe kusenesikhathi ukugwema ukuvuza kwesihlabathi.
Isikhathi sokuthumela: Feb-23-2024