
chilttan tunnel

nilavil englandile buckinghamsharilum hertfordshire nirmmaanathilirikkunna athivega railway thurankamaanu chilttan tunnel, poortthiyaakumbol chilttan kunnukalkk keezhil athivega 2 (echs 2) railway line vahikkum. neelamulla eratta-booar thurankangal echs 2 lainile ettavum dairkhyameriyathaayirikkum. oro thurankathinum vaayuvinte marddathilum thudarnnulla shabdathilum pettennulla mattangal kuraykkunnathinu adhika praveshana, eksitt sushirangalulla konkreett portalukalum undaayirikkum.
2017ll thurankatthinte nirmmaanathinulla karar nalkappettu; adutha varsham thayyaareduppukal aarambhichu. 2021 meyy maasathil khananam aarambhichathayi prakhyaapichu. oru jodi tunnel boaring mesheenukal (tbms) pradhaanamaayum nirvahikkenda boaring prakriya prathidinam sharashari vegathayil purogamikkukayaanu; 2024 maarchil ithu poortthiyaakumennu prathekshikkunnu.
charithram.
athivega 2 (echs 2) reyilveyude nirmmaanatthil uddeshicha roottil niravadhi pradhana sivil enchiniyaring jolikal ulppeduthum. nirmmaana aanukaalikamaaya "nyoo sivil enchineeyar" chilttan kunnukale "echs 2-nte ettavum valuthum ettavum velluvili niranjathumaaya saitt" ennu visheshippichittundu. line ulkkollaan maduppikkenda thurankangalil, chuttum chillu tonnelinu maathram maduppundaakumennu pratheekshikkappedunnu.
padhathiyude aasoothrana ghattangalil chilttan tonnelinte roopakalppanayil mattangal vannittundu. 2015 augustil, thurankangal vadakkott vyaapippikkumenn prakhyaapichu; eee punaravalokanam aasoothranam cheytha prathyeka katt aandu cover thurankam maattisthaapikkaanum athupole thanne farthings maram polulla vanapradeshangalude nasham ozhivaakkaanum anuvadichu. 2017 ll, chilttan tonnelukal varunna laininte 21.6km bhagam ulkkollunna karar sii1 (central 1), boigus travox public, sarr roobert maclappin, wolkerfitspatrick enniva ulppedunna "aline jevi" samyuktha samrambhathin nalki. rund tunnel boaring mesheenukalum herenknech vitharanam cheyyukayum 2020 desemberil saittilekk athikkukayum cheythu.
design.
oru jodi tunnel boaring mesheenukal (tii. bii. emm. ezz) upayogichu khananam cheyyenda oru jodi samanthara dwaarangal chilttan tonnelinte adisthaana krameekaranam ulkkollunnu. oro tbminteyum bharam ekadesham 2,000 tonn aanu, neelamundu, praadhamikamaayi chokkum flintum adangiya praadeshika jiyolajikkanusarichu prathyekamaayi ishtaanusrithamaakkiyittundu. aalukalude vahanakal upayogichu uparithalathinum tbmin idayil jeevanakkaare athikkunnu, ithu boradikkunnathinte avasana varshangalilekku oru manikkoor traansit samayam vare undaakum. emm25 motorwake chuttumulla samvedanakshamatha kaaranam, bhooribhaagam jolikalilum oresamayam pravartthikkaan uddeshichulla rund tbmukalum eee pradhana trunk roottinu sameepam oru samayat oru tbm maathrame sajeevamaakoo.
thurankangalude thekke kavaadam aduthulla colne vaali vayadaktumaayi vinyasichirikkunnu, ithu emm 25 nuu sameepamaan. rund thurankangal neelamullathaayirikkum, vadakkan portal thekkan heethinaduthaayirikkum. avayude ettavum aazhameriya binduvil, avaa bhoonirappinu thazheyaayirikkum; oro borinteyum aantharika vyaasam aayirikkum. poortthiyaaya thurankathinu rund vyathyastha dwaarangaleyum anchu shaafttukaleyum bandhippikkunna motham naalpat cross paasejukal undaakum, avaa vaayusanjaarathinum adiyanthira praveshana aavasyangalkkum upayogikkum; iva chalfond sent peettar, chalfond sent gails, amersham, littil missenden, chesham rooad ennividangalil (thekk ninnu vadakkott) sthithicheyyunnu-athil randaamathethu adiyanthira saahacharyangalkulla oru intervention shaaft maathramaan. chilttens oonbu review grouppumaayum buckinghamshare kaunsilumaayum edapazhakunnathiloode nirmmikkunna head houseukal eee ventukalil gadippikkanam. sent gails shaafttinte uparithala gadakangal manappoorvvam kaarshika kettidangalude vesham dharichavayaanu. amarsham ventu shaafttinte roopakalppana sthalathinu anusrithamallaathathinaal vimarsanathinu sesham athinte prarambha roopakalppana parishkarichu. niravadhi aavarthanangalkk sesham design athinte anthima amgeekaara ghattathilaanu.
nirmmaanam.
2020 joolaiyil emm25 motorwake sameepam thekke attathu oru uyarnna head vaalinte punny poortthiyaayi. nirmmaana ghattathil thozhilaallikale ulkkollunnathinayi, thaamasavum vividha soukaryangalum ulkkollunna oru thaalkkaalika soukaryam saittil nirmmichittundu; aduthulla colne vaali vayadakttinte nirmmaanathinum eee saitt upayogikkum.
2020 septambaril, rund tbmukalil aadyathethinte varavinulla anthima thayyaareduppukal nadathukayum aaa varsham desemberil iruvarum sthalathethukayum cheythu. 2021 maarchil, fiber-inforced konkreett tunnel lininginte aadya vibhaagam kaast cheythu; ithu ore samayam 49 vibhagangal vare nirmmikkaan kazhivulla thekkan porttalinadutthulla oru uddeshyathode nirmmicha soukaryathilaanu nirmmikkunnath. oro thurankavum poortthiyaakkaan krithyamaayi roopakalppana cheytha 56,000 vibhagangal aavasyamaanu.
2021 meyy 13 nuu aarambhicha khananam 2024 maarchil poortthiyaayathaayi kanakkaakkappedunnu. adutha maasathil, 24 manikkoor pravartthikkunna aadyathe tbm prathidinam saadhaarana vegathayil munnerunnathaayi report cheyyappettu. oro tbm 12 manikkoor shifttukalil jolie cheiyunna 17 peradangunna oru samghamaanu pravarthippikkunnathu, athesamayam uparithala logistics boaring jolikalkkulla pinthunayum uparithalathil nooriladhikam aalukal nalkunnu. 2021 juunil randaamathe tbm boradippikkaan thudangi.
drivinte aadya ghattam (southu portal muthal chalfond sent peettar ventilation shaaft vare) 2022 maarchil poortthiyaayi, pradhana oodunna thurankangal thammilulla cross paasejukalil aadyathethu aaa varsham augustil poortthiyaayi. chalfond sent gails ventilation shaaft 2022 octoberil ethi.
thurankangal neekkunna samayat khananam cheytha chokku thekkan portalukalkku sameepam oru prakrithi samrakshana cover srishtikkaan upayogikkanam; ithinaayi, khananam aarambhikkunnathin munbu chokku slurry vare thaalkkaalika sambharanathinum samskaranathinumulla nadapadikal oonsaittil earppeduthiyirunnu. 2021 meyy maasathilaanu eee padhathikku amgeekaaram labhichathu.
purogathi.
2021 meyy maasathil vikshepicha aadyathe yanthramaaya tbm florence, booar neelatthinte 73 sathamaanam dooram thekkan portalil ninnu munnott pooyi. 
2021 juunil vikshepicha randaamathe yanthramaaya tbm "cecilia" booar neelatthinte 72 sathamaanam poortthiyaakkiyirunnu. rund tii. bii. emmukalum nilavil buckinghamshare pattanamaya amershaaminte padinjaaru bhagathaanu, shardelos kantri house estettinu keezhil kadannupoyi, ithu valare kuravaanu.