Tsarin da Nau'ikan Tushen Injin Turbin Iska
Gina injinan iska ba wai kawai ya shafi dogayen hasumiyai da manyan ruwan wukake da ake gani a saman ba. Akwai wani muhimmin sashi da ke "aiki" a ƙarƙashin ƙasa ko a kan ƙasa: harsashin. Gina injinan yana taimakawa wajen canja wurin dukkan nauyin injinan turbine cikin aminci - duka a tsaye da kuma a tsaye - zuwa ƙasa, yana kiyaye kwanciyar hankali, da kuma tabbatar da cewa tsawon rayuwar ginin ya cika manufofin ƙira. Wannan labarin ya tattauna tsarin tushe na injinan iska da nau'ikansu don aikace-aikacen teku da na teku.
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Matsayin da Nauyin da Dole ne Tushen Ya Dauka
Injinan injinan iska suna fuskantar haɗakar kaya masu sarkakiya. A ƙarƙashin yanayin aiki na yau da kullun, harsashin dole ne ya tallafa wa nauyin hasumiyar, nacelle, rotor, da kayan haɗin ciki. Duk da haka, manyan ƙalubale galibi suna zuwa ne daga kayan aikin muhalli da masu canzawa, kamar:
1. Load ɗin iska (aerodynamic)
Tura daga rotor yana haifar da babban ƙarfin kwance a kan hasumiyar kuma yana haifar da lokacin juyawa.
2. Nauyin aiki mai ƙarfi da gajiya
Juyawar rotor, hayaniyar iska, da kuma bambancin alkibla/gudun iska suna haifar da lodi mai maimaitawa wanda zai iya haifar da tsagewa da raguwar tauri akan lokaci.
3. Nauyin girgizar ƙasa
A yankunan da girgizar ƙasa ta shafa, dole ne a tsara harsashin don jure wa hanzarin ƙasa, yiwuwar zubar da ruwa, da kuma nakasa ta dindindin.
4. Yanayin ƙasa (geotechnical)
Bambancin ƙarfin yanke ƙasa, haɗakar ƙasa, matakin ruwan ƙasa, da kuma ƙarfin ɗaukar kaya yana tasiri sosai ga zaɓin nau'in tushe.
5. Don teku: raƙuman ruwa, kwararar ruwa, da tsatsa
Tushen teku yana jure wa ƙarfin hydrodynamic, tasirin raƙuman ruwa, da muhallin da ke buƙatar ƙarin kariya.
Saboda injinan iska siriri ne kuma dogaye, muhimman batutuwa sune kwanciyar hankali daga juyewa da sarrafa nakasa/karkatar da su. Yawan daidaitawa ko bambancin na iya kawo cikas ga daidaita hasumiya, ƙara girgiza, da kuma hanzarta gazawar sassan.
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Tsarin Gidauniyar Injin Turbin Iska (A gefen teku)
A cikin injinan turbines na cikin teku, harsashin galibi wani siminti ne mai ƙarfi wanda ke ɗaure hasumiyar da tsarin ƙulli. Tsarin gabaɗaya ya ƙunshi:
– Tafiya/Plinth: wani yanki na siminti wanda ke fitowa sama da ƙasa a matsayin tallafi ga flange na hasumiya.
– Akwatin anga/ƙusoshin anga: firam ɗin ƙusoshin da aka haɗa wanda ke haɗa hasumiyar da siminti; wannan abu yana da matuƙar mahimmanci saboda yana ɗauke da ƙarfin tururi da matsin lamba wanda ke faruwa sakamakon lokutan juyawa.
– Babban tubalin siminti ko fale-falen siminti: babban taro na siminti don samar da nauyi da kuma tsayayya da ƙarfin juyawa.
- Babban ƙarfafawa da ƙarfafa yankewa: don sarrafa fasa, tsayayya da tashin hankali, da kuma kula da juriya.
- Tsarin ƙarfafa ƙasa (zaɓi ne): inganta ƙasa, kayan geotextile, ko granular don ƙara ƙarfin ɗaukar kaya.
Ta hanyar ƙira, harsashin injinan iska sau da yawa suna dogara ne akan haɗin nauyin kai (nauyi) da ƙarfin ɗaukar ƙasa don tsayayya da lokutan juyawa, don haka girmansu na iya zama babba sosai.
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Nau'in Tushen Injin Turbin Iska na Kan Teku
1. Tushen Tafiyar Nauyi (Rashin zurfi)
Wannan ita ce nau'in da aka fi sani da ƙasa mai ƙarfin ɗaukar kaya. Siffar sa na iya zama zagaye ko murabba'i, tare da girma daga 'yan mita zuwa goma na mita, ya danganta da ƙarfin injin turbine da yanayin ƙasa.
Kelebihan:
– Gine-gine abu ne mai sauƙi kuma sananne.
– Farashin gasa a kan farashi mai wahala zuwa matsakaici.
– Ƙarancin gyara bayan shigarwa.
Kekurangan:
– Yana buƙatar babban adadin siminti.
– Ba ta dace da ƙasa mai laushi ko kuma wuraren da ke da haɗarin zama a wuri mai yawa ba.
2. Gidauniyar Rock Anchor (Yankin Rocky)
Idan wurin yana da dutse mai zurfi, harsashin zai iya amfani da anka dutse don tsayayya da ƙarfin tururin da ke faruwa sakamakon juyawar lokaci. Ana iya sa simintin ya zama mai laushi saboda anka yana ba da wasu daga cikin juriyar tururin.
Kelebihan:
– Yana rage yawan siminti da haƙa rami.
– Yana da tasiri sosai akan duwatsu masu inganci.
Kekurangan:
– Ya dogara sosai akan ingancin duwatsu da kuma shigar da anga.
- Yana buƙatar ingantaccen iko (gwajin jan anga, grouting).
3. Tushen Tushe
A cikin ƙasa mai laushi ko kuma a cikin yadudduka masu kauri da za a iya matsewa, tushe mara zurfi yana zama mai haɗari. Mafita ita ce a yi amfani da tarin da ba su da kyau, galibi a haɗa su da murfin tarin.
Kelebihan:
– Ya dace da ƙasa mai laushi, wurare masu dausayi, ko wurare masu ƙarancin ƙarfin ɗaukar kaya.
- Yana rage kwanciyar hankali da kuma ƙara taurin kai.
Kekurangan:
– Kuɗi mai yawa da kuma ƙarin dabaru masu sarkakiya.
- Yana buƙatar kayan aiki na musamman da kuma sarrafa girgiza/hayaniya (musamman ga tarin da ake tuƙawa).
4. Tushen Haɗin Gauraye (Inganta Ƙasa + Rashin Tsami)
Madadin da ake yawan zaɓa shine a fara inganta ƙasar, misali ta hanyar maye gurbin ƙasa, ginshiƙan dutse, haɗa ƙasa mai zurfi, ko kuma yin grouting, sannan a yi amfani da tushe mai zurfi.
Kelebihan:
- Zai iya zama mafi arha fiye da cikakken mast.
– A hanzarta ginawa idan hanyar inganta ƙasa ta dace.
Kekurangan:
– Yana buƙatar cikakken bincike kan yanayin ƙasa da kuma kula da inganci mai tsauri.
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Tushen Injin Turbin Iska na Ƙasashen Waje: Kalubale da Tsarin da Aka Yi Amfani da Su
Tushen ƙasa na ƙasashen waje dole ne ya yi aiki a cikin yanayi mai ƙarfi da ƙarfi. Baya ga tallafawa nauyin turbines, tushen ƙasa dole ne ya yi la'akari da:
– Lalacewar ƙasan teku (security) a kusa da tushe saboda kwararar ruwa/raƙuman ruwa.
– Tsatsa na tsarin ƙarfe da haɗin gwiwa.
- Sufuri da shigarwa ta amfani da jiragen ruwa na musamman da ƙa'idojin yanayi (tagar yanayi).
Gine-ginen da ke bakin teku gabaɗaya sun haɗa da wani yanki na canzawa tsakanin tushe da hasumiya, kariyar tsatsa (kariyar rufi/kariyar cathodic), da tsarin kariya daga scour (dutsen sulke, katifa, ko geotextile).
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Nau'ikan Tushen Injin Turbin Iska na Teku
1. Monopile
Monopile babban bututun ƙarfe ne da ake tura shi cikin teku. Wannan shine nau'in da aka fi sani da ruwa mai zurfi zuwa matsakaici, ya danganta da diamita, zurfinsa, da yanayin ƙasa.
Kelebihan:
– Tsarin ƙira mai sauƙi, ƙwarewar masana'antu mai yawa.
– Shigarwa da sauri (tsaftacewa/haƙa rami) idan yanayi ya ba da dama.
Kekurangan:
- Babban hayaniya yayin tarin abubuwa (yana shafar biota na ruwa).
– Rashin inganci a cikin ruwa mai zurfi ko ƙasa mai tauri/dutse.
2. Jaket (Tsarin Grid)
Tushen irin jaket ya ƙunshi firam ɗin ƙarfe masu ƙafafu uku ko huɗu waɗanda aka makale a kan ƙasan teku tare da tarin abubuwa. Galibi ana amfani da su a zurfin da ya fi na monopiles.
Kelebihan:
- Mafi kwanciyar hankali ga zurfin matsakaici-zurfi.
- Nauyin da aka rarraba a kan ƙafafu da yawa, ya dace da wasu yanayi.
Kekurangan:
– Ƙirƙira da shigarwa sun fi rikitarwa.
- Farashi mafi girma fiye da monopiles a zurfin ƙasa.
3. Tsarin Tushen Nauyi (GBS)
GBS wani tushe ne mai nauyi (yawanci siminti) da aka sanya a kan gadon teku. Ana samun kwanciyar hankali ta hanyar girman ginin da kuma hulɗar da ke tsakaninsa da gadon teku, wani lokacin ana ƙara masa ballast.
Kelebihan:
- Ƙaramin aikin tattarawa (mafi dacewa da hayaniya).
- Ya dace da wurare masu gadajen teku waɗanda za a iya shirya su sosai.
Kekurangan:
– Yana buƙatar shiri mai kyau a kan teku.
– Jigilar manyan motoci yana buƙatar manyan kayan aiki.
4. Bokitin Tsotsa / Caisson na Tsotsa
Wannan nau'in yana amfani da bokitin ƙarfe wanda aka sanya ta amfani da matsin lamba daban-daban (tsotsa). Yana da kyau saboda yana da sauri a shigar kuma yana iya zama mai shiru fiye da tara abubuwa.
Kelebihan:
– Shigarwa yana da sauri kuma yana iya zama mafi dacewa ga muhalli.
– Ana iya rage buƙatar tara guduma.
Kekurangan:
- Mai saurin kamuwa da nau'in ƙasa (ya dogara sosai akan yanayin ƙasa).
– Yana buƙatar tsauraran matakan tsaro da kuma sa ido kan matsin lamba.
5. Tushen Shawagi (Turbin Shawagi)
Ga ruwa mai zurfi, harsashin da aka gyara ba shi da amfani. Injin turbines yana amfani da dandamali masu iyo kamar spar-buoys, semi-submersibles, ko dandamalin ƙafafu masu ƙarfi (TLPs), waɗanda tsarin da'ira ke riƙewa a wurinsu.
Kelebihan:
– Buɗe damar samun wurare masu ƙarfi na iska a cikin teku mai zurfi.
– Ana iya yin shigarwa galibi a tashar jiragen ruwa sannan a ja shi zuwa wurin.
Kekurangan:
- Tsarin ƙira da aiki mai rikitarwa (tsarin tsarin ruwa).
– Yana buƙatar tsarin tsayawa mai ƙarfi da kuma tsarin kebul.
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Abubuwan da ke haifar da Zaɓar Nau'in Tushen Gida
Ba za a iya yin amfani da zaɓin tushe gaba ɗaya ba, domin ana ƙaddara shi ta hanyar haɗakar waɗannan abubuwan:
- Ƙarfin injin turbine (MW), tsayin hasumiya, da diamita na rotor.
– Halayen ƙasa: ƙarfin ɗaukar kaya, yadudduka masu laushi, duwatsu, ƙarfin fitar da ruwa.
– Zurfin ruwa da yanayin metocean (don ƙasashen waje).
– Iyakokin gini: samun kayan aiki masu nauyi, kayan aikin siminti, da kuma samuwar jiragen ruwa masu shigarwa.
– Kuɗaɗen zagayowar rayuwa: ba wai kawai kuɗaɗen farko ba, har ma da dubawa, kariyar tsatsa, da gyare-gyare.
- Dokokin muhalli da tasirinsu: hayaniya, rikicewar muhalli, da kuma kula da kayan da aka haƙa.
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Penutup
Tushen tushe shine "tushen" injin turbin iska, wanda ke tantance daidaito, aiki, da tsawon rayuwar sabis na tsarin gaba ɗaya. Ana amfani da tushe a bakin teku, wanda aka gina bisa ga nauyi mai zurfi, amma ana zaɓar tudu, ankare dutse, ko kuma hybrids lokacin da ƙasa ke buƙatar mafita ta musamman. Har yanzu ana amfani da monopiles a bakin teku, amma jaket, tushen nauyi, bokitin tsotsa, har ma da dandamali masu iyo suna ci gaba da haɓaka don biyan buƙatun zurfi da inganci. Tare da ingantaccen bincike na ƙasa, ƙididdigar tsari mai kyau, da hanyoyin shigarwa masu dacewa, tushe na iya tabbatar da cewa injin turbin iska suna aiki lafiya da aminci tsawon shekaru da yawa.
Idan kuna so, zan iya daidaita wannan labarin don ya zama mafi fasaha (misali ƙara sigogin ƙira, ƙa'idodin tunani kamar IEC/DNV, da misalan tsarin girma) ko kuma ya fi shahara ga masu karatu gabaɗaya.
