1. Onogada bezikhali
Udaka olwenziwe nge-bentonite lune-viscosity enhle, ngakho-ke ekwakhiweni kwe-trenchless, udonga olungenalutho olwakhiwe ngodaka olwenziwe nge-bentonite luvikela udonga oluzungezile lwembobo ngesikhathi ukuvimbela umswakama ukuba ungabhidli udonga lwembobo, ngakho-ke i-viscosity ye-bentonite yodaka oluhle kakhulu. kuhle, kulula ukunamathela odongeni lwembobo futhi wenze ngokushesha ifilimu evikelayo, uvimbele amanzi ekugezeni udonga lwembobo, futhi udlale indima ebaluleke kakhulu ekuvimbeleni ukuwa.
2. ngama-chips
Enkambweni yokwakhiwa kwe-trenchless, ngokubhoboza i-drill bit, kuzoba namatshe amaningi agayiwe nesihlabathi esihle, futhi kubaluleke kakhulu ukukhipha ama-chips amatshe agayiwe aphume emgodini wokwakha ngesikhathi.Udaka olwenziwa nge-bentonite lunokumiswa okuhle futhi lungaletha imfucumfucu ekhiqizwa ngesikhathi sokwakhiwa ngaphandle komgodi wokwakha, ukuze i-trenchless iqhubeke kahle.
3. Ukuthambisa
Ekwakhiweni okungenazintambo, ukwakhiwa kwe-drill bit kuzohlangana ne-geology ehlukene ngesikhathi esifanayo, ezinye zazo ezinzima kakhulu njengezingqimba zamatshe kanye netshe.Kulokhu kwakhiwa kwe-sublayer, ukugqokwa kwe-drill bit kubi kakhulu.Ngesikhathi esifanayo, udaka olwenziwe nge-bentonite lunomphumela omuhle wokugcoba, ongagcoba i-drill bit ngesikhathi sokwakhiwa futhi uchithe ukushisa ngesikhathi esifanayo.Lokhu kwandisa impilo yesevisi ye-drill bit futhi kuqinisekisa ukuthuthukiswa okushelelayo kwephrojekthi.
Ukukhethwa kwe-bentonite engenazintambo kufanele kuqala kusekelwe esimweni sephrojekthi, futhi izidingo zamaphrojekthi ahlukene zihlukile.Lokhu kungahlukaniswa kalula kube i-trenchless enezingqimba kanye ne-trenchless eqondile.Amapayipi okubhoboza nokudweba avundlile, ukugqekezwa kwamapayipi kanye nemishini yokuvikela ingeyokwakhiwa okuvundlile;Ukumba uwoyela kanye nokuhlola kwe-geological kungokuhlola okungenantambo okuqondile.Lezi zindlela ezimbili ezingezona zokushayela zinezidingo ezihluke kakhulu ze-bentonite.
Ukuphakama kwe-viscosity edingekayo ngokusetshenziswa okuvundlile okungavuleki kwe-bentonite, kungcono ukuyisebenzisa.Ngokuvamile, i-viscosity (ukufundwa kwe-viscometer ye-600 rpm) ikhethiwe ngaphezu kwe-40. Uma indawo yokwakha iyingxenye yesihlabathi esihlanzekile, kungcono ukhethe i-viscosity engaphezu kuka-60, futhi isilinganiso se-bentonite namanzi asikho ngaphansi kuka-5. %.Nasi isincomo mayelana nenhlabathi yodaka ekhiqizwa e-Liaoning kanye nenhlabathi yodaka ekhiqizwa e-Inner Mongolia.I-viscosity ephezulu, umphumela omuhle wokusebenzisa.
I-bentonite engashayeli eqondile engaqhutshwanga, i-viscosity ngokuvamile ingaba ngu-35. Kungcono kakhulu ukuba yi-viscosity ye-bentonite ngokwayo, ngaphandle kokwengeza ama-tackifiers.Ngenxa yokuthi i-tackifier ikhuphuka ekujuleni ngesikhathi sokubhola okuqondile, izinga lokushisa lizolahlekelwa umphumela walo ngemva kokudlula ama-300 degrees Celsius.Ngesikhathi esifanayo, kunomphumela othile olimazayo ku-drill bit.Ngakho-ke, i-bentonite engenalutho eyenziwe nge-bentonite eluhlaza ore kufanele ikhethwe.
Ngamafuphi, ukukhethwa kwe-bentonite engenantambo kufanele kunqunywe ngokuvumelana nesimo sangempela sendawo yokwakha.Futhi cabangela izindleko zokusebenzisa.