1. Uhlolojikelele lwephrojekthi
Le phrojekthi isebenzisa ukwakhiwa kwe-open-cut. Uma ukujula komgodi wesisekelo kukhulu kunamamitha angu-3 nangaphansi kwamamitha angu-5, isakhiwo esisekelayo sisekelwa φ0.7m*0.5m inhlabathi yesimende ehlanganisa inqwaba yodonga olubamba amandla adonsela phansi. Lapho ukujula komgodi wesisekelo kukhulu kunamamitha angu-5 nangaphansi kwamamitha angu-11, inqwaba ebhorekile engu-φ1.0m*1.2m + umugqa owodwa φ0.7m*0.5m ukusekelwa kwenqwaba yomhlaba kasimende kusetshenziswa. Ukujula komgodi wesisekelo kukhulu kunamamitha ayi-11, kusetshenziswa inqwaba enesithukuthezi engu-φ1.2m*1.4m + umugqa owodwa φ0.7m*0.5m ukwesekwa kwenqwaba yomhlaba kasimende.
2. Ukubaluleka kokulawula ukuma
Ukulawulwa kokuma kokuma kwezinqwaba kubaluleke kakhulu ekwakhiweni okulandelayo komgodi wesisekelo. Uma ukuchezuka kokuma kwenqwaba enesithukuthezi ezungeze umgodi wesisekelo kukukhulu, kuzoholela ekucindezelekeni okungalingani kwesakhiwo esibambayo eduze komgodi wesisekelo, futhi kulethe izingozi ezinkulu ezifihliwe ekuphepheni komgodi wesisekelo. Ngesikhathi esifanayo, uma ukuphambuka kokuma kwenqwaba enesithukuthezi kukhulu, kuzoba nomthelela omkhulu ekwakhiweni nasekusetshenzisweni kwesakhiwo esiyinhloko esikhathini esizayo. Ngenxa yokuphambuka okukhulu kokuma kwenqwaba enesithukuthezi ezungeze isakhiwo esikhulu, amandla azungeze isakhiwo esiyinhloko azobe engalingani, okuzoholela ekuqhekekeni kwesakhiwo esiyinhloko, futhi alethe izingozi ezifihliwe ekusetshenzisweni okulandelayo kwesakhiwo esikhulu.
3. Isizathu sokuphambuka kwe-perpendicularity
Ukuchezuka okuma mpo kwenqwaba yokuhlola kukhulu. Ngokuhlaziywa kwephrojekthi yangempela, izizathu ezilandelayo zifinyezwa kusukela ekukhethweni komshini kuya ekubunjweni kwemigodi yokugcina:
3.1. Ukukhethwa kwezingcezu zokubhoboza, ubulukhuni be-geological bomshini wokumba inqwaba ye-rotary enqubweni yokumba abufani, ukukhethwa kwezingcezu zokubhoboza akukwazi ukuhlangabezana nezidingo zezimo ezihlukahlukene ze-geological, okuholela ekuphambukeni kancane, bese ukuchezuka okuqondile inqwaba ayihlangabezani nezidingo zokucaciswa.
3.2. Isilinda sokuvikela sigqitshwe ngaphandle kwendawo.
3.3. Ukugudluzwa kwepayipi lokubhoboza kwenzeka ngesikhathi sokumba.
3.4. Ukuma kwekheji yensimbi akukho endaweni, ngenxa yokumiswa okungalungile kwephedi ukulawula ikheji lensimbi, ukuphambuka okubangelwa ukwehluleka ukuhlola isikhungo ngemuva kokuba ikheji lensimbi lisendaweni, ukuphambuka okubangelwa ukhonkolo osheshayo. ukuchelela noma ukuchezuka okubangelwa ipayipi elilenga ikheji lensimbi.
4. Izinyathelo zokulawula ukuchezuka
4.1. Ukukhetha i-drill bit
Khetha ama-drill bits ngokuya ngemibandela yokwakheka:
① ubumba: khetha iphansi elilodwa lebhakede lokumba elijikelezayo, uma ububanzi buncane ungasebenzisa amabhakede amabili noma ibhakede lokumba amapuleti okuthulula.
②Usilika, ungqimba lwenhlabathi ebambene olungaqinile, inhlabathi enesihlabathi, ungqimba lwamatshe oluqinile oluhlanganiswe kabi nosayizi wezinhlayiyana ezincane: khetha ibhakede lokubhola eliphansi kabili.
③ubumba oluqinile: khetha i-inlet eyodwa (iphansi elilodwa neliphindwe kabili lingaba) ibhakede lokumba lokumba elijikelezayo, noma isikulufu esiqondile sebhakede.
④itshe elisikiwe kanye namadwala aqine kakhulu: kudingeka afakwe i-conical spiral drill kanye nebhakede lokumba elijikelezayo eliphansi kabili (elinobubanzi obubodwa bosayizi wezinhlayiyana ezinkulu, ezinobubanzi obuphindwe kabili)
⑤ i-stroke bedrock: ifakwe i-cylindrical core drill bit - i-conical spiral drill - ibhakede lokubhola elijikelezayo eliphansi kabili, noma i-spiral drill bit eqondile - ibhakede lokubhola elijikelezayo eliphansi kabili.
⑥umbhede ophefumulayo: ifakwe i-cone cone core drill bit - i-conical spiral drill bit - ibhakede lokubhola elijikelezayo eliphindwe kabili eliphansi uma ububanzi bukhulu kakhulu ukuthatha inqubo yokumba esiteji.
4.2. I-Casing ingcwatshwe
Ukuze kugcinwe ukuma kwesilinda sokuzivikela lapho kungcwatshwa isilinda sokuzivikela, ukulawulwa kwe-intersection kufanele kwenziwe ngebanga elihlukile ukusuka enqwabeni eholayo kuya esikhungweni senqwaba kuze kube phezulu kwesilinda sokuzivikela sifinyelela ekuphakameni okucacisiwe. Ngemva kokuba i-casing ingcwatshiwe, indawo emaphakathi yenqwaba ibuyiselwa ngaleli banga kanye nesiqondiso esinqunyiwe ngaphambili, futhi kutholakala ukuthi isikhungo se-casing sihambisana yini nendawo yenqwaba, futhi ilawulwa ngaphakathi kwebanga elingu-± 5cm. . Ngesikhathi esifanayo, indawo ezungezile ye-casing i-tamped ukuqinisekisa ukuthi izinzile futhi ngeke isuswe noma idilike ngesikhathi sokumba.
4.3. Inqubo yokumba
Inqwaba ebhoboziwe kufanele ibhojwe kancane ngemva kokuvula imbobo, ukuze kwakhiwe ukuvikelwa kodonga oluhle futhi oluzinzile futhi kuqinisekiswe indawo efanele yembobo. Phakathi nenqubo yokubhoboza, indawo yepayipi yokubhoboza ihlolwe njalo nge-intersection yebanga, futhi ukuphambuka kulungiswa ngokushesha kuze kube yilapho kubekwe isikhundla somgodi.
4.4. Ukuma kwekheji lensimbi
Ukutholwa kokuchezuka kwenqwaba kunqunywa ukuchezuka phakathi kwesikhungo sekheji yensimbi kanye nendawo emaphakathi yenqwaba eklanyelwe, ngakho-ke ukumiswa kwekheji yensimbi kuyinto ebalulekile ekulawuleni ukuchezuka kwendawo yenqwaba.
(1) Imigoqo emibili yokulenga isetshenziswa lapho ikheji lensimbi lifakwa ngaphansi ukuze kuqinisekiswe i-perpendicularity yekheji yensimbi ngemva kokuphakanyiswa.
(2) Ngokwezidingo zekhodi, iphedi yokuvikela kufanele yengezwe, ikakhulukazi endaweni ephezulu yenqwaba kufanele yengezwe enye iphedi yokuvikela.
(3) Ngemva kokuba ikheji lensimbi libekwe emgodini, donsa umugqa wesiphambano ukuze unqume iphuzu eliphakathi, bese uqhuba ibanga phakathi kwesikhungo somgwaqo kanye nokubuyiswa kwenqwaba ngokudweba inqwaba kanye nesiqondiso esimisiwe. Qhathanisa umugqa omile olengayo nendawo emaphakathi yekheji yensimbi, futhi ulungise ikheji yensimbi ngokunyakazisa kancane i-crane ukuze uqinisekise ukuthi izikhungo ezimbili ziyavumelana, bese ushisela ibha yokuma ukuze wenze ibha yokuma ifinyelele odongeni lwesilinda esivikelayo.
(4) Uma ukhonkolo othululiwe useduze nekheji lensimbi, yehlisa isivinini sokuthulula ukhonkolo futhi ugcine indawo ye-catheter phakathi nendawo yembobo.
Isikhathi sokuthumela: Sep-22-2023