Ukuhlaziywa kwembangela kanye nezinyathelo zokulawula inqwaba yenhlabathi engaphansi kwenqwaba yokumba ejikelezayo

I-sediment ye-pile bottom ingase ikhiqizwe ekwakhiweni kwezimbobo zokumba, ukubekwa kwekheji lensimbi, kanye nokuthelwa kukakhonkolo. Ukuhlaziywa kubonisa ukuthi izimbangela ze-sediment zingahlukaniswa cishe ngezigaba ezilandelayo:

1.1 Ukudilika kodonga lwembobo yenqwaba

1.1.1 Ukuhlaziywa kwembangela emgodini wenqwaba; ingxenye yodaka iphansi kakhulu, amandla okumiswa ampofu; ithuluzi lokumba eliphakamisayo lishesha kakhulu ukwenza ukudonsa komgodi; ngesikhathi sokumba, izinga lodaka liyehla futhi udaka emgodini alugcwaliswa ngesikhathi; ithuluzi lokubhoboza liklwebha udonga lwembobo; udonga lwembobo; ikheji lokuqinisa alikho ukhonkolo oluthelwe ngesikhathi ngemuva komgodi wokugcina, futhi udonga lwembobo lude kakhulu.

1.1.2 Izinyathelo zokulawula: andise ubude beshubhu yesihlangu sensimbi ngokwezimo zokubunjwa; ukwandisa inani lodaka, ukwandisa i-viscosity yodaka futhi unciphise idiphozithi phansi futhi ulawule umshini wokugcwalisa umshini wokubhoboza futhi ugweme indawo yokudonsa; phakamisa umgodi futhi unciphise ikheji lensimbi libe phakathi nendawo futhi mpo ngemva komgodi wokugcina ukuze unciphise isikhathi sokusebenza esisizayo.

1.2 Imvula yodaka

1.2.1 Ukuhlaziya imbangela

Imingcele yokusebenza kodaka ayifanelekile, umphumela wokuvikela udonga awulungile; isikhathi sokulinda ngaphambi kokugcotshwa yinde kakhulu, imvula yodaka; isihlabathi sodaka siphezulu.

1.2.2 Izinyathelo zokulawula

Lungiselela udaka ngemingcele efanele, ukuhlolwa okufika ngesikhathi futhi ulungise ukusebenza kodaka; ukunciphisa isikhathi sokulinda se-perfusion futhi ugweme imvula yodaka; misa ithange lokuthungatha udaka noma isihlukanisi sodaka ukuze uhlukanise inhlabathi yodaka futhi ulungise ukusebenza kodaka.

1.3 insalela yemigodi

1.3.1 Ukuhlaziya imbangela

Ukuwohloka noma ukuguga kwethuluzi lokumba phansi kukhulu kakhulu, futhi ukuvuza kodaka kukhiqiza inzika; isakhiwo esingaphansi sokumba sona sinomkhawulo, njengobude besakhiwo kanye nesikhala samazinyo okumba, okubangela insalela yenhlabathi eyeqile.

1.3.2 Izinyathelo zokulawula

Khetha amathuluzi okubhola afanelekile, futhi uhlole isakhiwo esingaphansi sokumba njalo; nciphisa igebe elingaphansi elijikelezayo kanye negebe elingezansi elilungisiwe; weld ngesikhathi esifanele umucu wobubanzi, buyisela amazinyo onqenqema aguge kakhulu; lungisa ngokufanelekile i-engeli yesakhiwo kanye nesikhala samazinyo okubhola; ukwandisa inani lokususwa kwe-slag ukuze kuncishiswe insalela yenqwaba phansi.

1.4 Inqubo yokuvula imigodi

1.4.1 Ukuhlaziya imbangela

Ukumunca kubangela ukuhlanzwa kwembobo; ukusebenza kodaka akufinyeleleki ezingeni, i-sediment ayikwazi ukuqhutshwa ngaphansi komgodi; inqubo yokuhlanza imbobo ayikhethiwe, futhi i-sediment ayikwazi ukuhlanzwa.

1.4.2 Izinyathelo zokulawula

Lawula amandla okumunca wepompo ukuze unciphise umthelela odongeni lwembobo, shintsha udaka futhi ulungise inkomba yokusebenza kodaka, bese ukhetha inqubo yokuhlanza imbobo yesibili efanele ngokuvumelana nesimo sokumba.

Ubuchwepheshe bokusula imbobo yesibili ye-rotary drilling bored pile

Enqubweni yokumba i-rotary, izinyathelo ezifanele kufanele zithathwe ukuze kugwenywe ukungcola. Ngemuva kwe-cage yokuqinisa kanye nepayipi yokuthulula, inqubo efanele yokuhlanza imbobo yesibili kufanele ikhethwe ukwelashwa kwe-sediment. Ukukhishwa kwesibili komgodi kuyinqubo eyisihluthulelo yokususa i-sediment ngaphansi komgodi ngemva kokumba umgodi, ukungena ekhejini lensimbi kanye ne-perfusion catheter. Ukukhethwa okunengqondo kwenqubo yokuhlanza imigodi yesibili kubaluleke kakhulu ukususa i-sediment yembobo engezansi futhi kuqinisekiswe ikhwalithi yobunjiniyela benqwaba. Njengamanje, ubuchwepheshe bokuhlanza umgodi wesibili womgodi wokumba i-rotary embonini bungahlukaniswa ngezigaba ezintathu ezilandelayo ngokusho kwemodi yokujikeleza kodaka: udaka oluhle lokuhlanza umgodi wokujikeleza, ukuhlanza umgodi wokujikeleza okuphambene kanye namathuluzi okumba ngaphandle kokuhlanza umgodi wokujikeleza udaka.