Injin yashi

Injin yashi ko motar yashi (Yasar Holland: zandmotor) wani nau'in abinci ne na bakin teku inda aka ƙara yawan laka zuwa bakin teku. Sojojin yanayi na iska, raƙuman ruwa da raƙuman ruwa sannan suna rarraba yashi a bakin tekun tsawon shekaru masu yawa, suna hana buƙatar maimaita abincin bakin teku. Ana sa ran hanyar za ta fi tasiri mai tsada kuma tana rage maimaita rikice-rikicen muhalli da ke haifar da sakewa.

An gina injin yashi na farko a Kudancin Holland a cikin Netherlands. An kirkiro tsibirin da ke da siffar ƙugiya 128 ha tsakanin Ter Heijde da Kijkduin a cikin 2011 bisa buƙatar Hoogheemraadschap van Delfland . 

 Gine-gine tare da yanayi 
Injin yashi ya bambanta sosai da dabarun abinci na rairayin bakin teku na baya. A al'ada, abinci mai gina jiki na bakin teku ya kunshi m3 miliyan 1-2 na yashi kuma waɗannan ayyukan yawanci suna wucewa ne kawai na shekaru 3-5 kafin su buƙaci maimaitawa.Ga injin yashi na farko, an yi amfani da tsari na girman yashi kuma ana sa ran zai kasance sau da yawa. Ta hanyar saka yashi mai yawa a cikin tafiye-tafiye ɗaya, ana iya aiwatar da tsari ne kawai a kowace shekara 10-20 ba kamar yadda aka saba da sake zagayowar shekaru 3-5 na abinci na gargajiya ba. Wannan yana rage rikice-rikice a ƙarƙashin teku.  Kodayake rikice-rikicen farko na gida yana da girma, misalin Yaren mutanen Holland ya nuna cewa damuwa ta muhalli tana iyakance ga wurin abinci mai gina jiki kuma, a tsawon lokaci, yana motsa fitowar nau'ikan dabbobi da shuke-shuke iri-iri. Yankin da ake da shi don yanayin halittu yana ƙaruwa a tsawon lokaci.

Farfesa Marcel Stive an dauke shi mai kirkirar injin yashi.

 Injin Yashi na asali 
An gina injin yashi na farko na irin wannan a Ter Heijde a cikin Netherlands, wanda ya kai Yuro miliyan 70, kuma an kira shi DeltaDuin a cikin Yaren mutanen Holland. An fara aiki a watan Janairun 2011 kuma yanayin ya kasance mai kyau don haka an kammala aikin a watan Oktoba 2011. Joop Atsma, Sakataren Harkokin Kasuwanci da Muhalli, ya gabatar da aikin a watan Nuwamba na shekara ta 2011 kuma manufarsa ita ce ta shawo kan cewa dabarar na iya zama da amfani a wasu wurare a bakin tekun Holland.

Girman m3 miliyan 21.5 na yashi, wanda aka tono daga kilomita 5-10 na bakin teku,  ya rufe yanki na hekta 128, wanda ya kai kilomita 2.4 tare da bakin teku kuma ya kai har zuwa kilomita 1 na bakin teku. An ajiye yashi a cikin nau'in ƙugiya mai kama da ƙugiya.Stive, M. J.; de Schipper, M. A.; Luijendijk, A. P.; Aarninkhof, S. G.; van Gelder-Maas, C.; van Thiel de Vries, J. S.; de Vries, S.; Henriquez, M.; Marx, S.; Ranasinghe, R. (2013). "A new alternative to saving our beaches from sea-level rise: The Sand Engine". Journal of Coastal Research. 290: 1001–1008. doi:10.2112/JCOASTRES-D-13-00070.1. ISSN 0749-0208. S2CID 130382547. An ba da izinin iska, raƙuman ruwa da aikin ruwa don rarraba yashi. An tsara aikin ne don samun tsawon rayuwa har zuwa shekaru 20,  duk da haka a cikin 2016 an kammala cewa zai kasance har ma fiye da yadda ake tsammani. "Research into the Sand Motor". Zandmotor. Retrieved 2021-03-04. Tsarin samfurin ya nuna cewa za a sami kimanin hekta 200 na yankin rairayin bakin teku.

Samar da yashi a karkashin ruwa zuwa farfajiyar ya ba Masu zuwa bakin teku damar samun kayan tarihi da ragowar mazaunan prehistoric na Doggerland da ke cikin ruwa yanzu. Duk da haka, asalin su ya ɓace.

Irin wannan aikin na iya samar da mafita tsakanin Camperduin da Petten, wanda ake kira Hondsbossche seawall.

 Tashar Gas ta Bacton 
A cikin 2019 an gina injin yashi don kare Tashar Gas ta Bacton da kewayen yankin a Norfolk, Ingila, yana canza mita miliyan biyu na yashi.

 Manazarta