Pehea e hoʻoheheʻe ai ke kahawai ʻo Salado ma Buenos Aires? Ua hōʻike ʻia ka mōʻaukala hou i ka nui o ka ua ma ka wahi haʻahaʻa noho ʻole i hana ai ke kahawai ʻo Salado me ka hoʻoweliweli pinepine ʻia e ka kaiāulu. A hiki hou ʻole ka mālama ʻia ʻana o ka muliwai. ʻO kēia i hana ma mua o nā kahe ʻana. Ma kēia kālā hou i hiki i kēia manawa ke uku no ka hoʻomaikaʻi ʻana i ka muliwai a me nā wahi a puni a i ke komo ʻana i ka kūpono mea hana loea ke mea e kōkua ai i ka mālama ʻana i nā kahe e hiki ke hoʻihoʻi i ka wai i kona ʻāina kūlohelohe.
Ke muliwai o Salado a me kona Mua
Mai ka 2000 a hiki i ka 2017, ʻoi aku ka nui o 800,000 mau ʻeka ʻāina i hōʻino ʻia ma loko o Buenos Aires, Argentina, ma muli o ke kahe wai o ka muliwai ʻo Salado. ʻO ke kūlanakauhale ʻo Buenos Aires ke kapikala o Argentina a me ke kūlanakauhale nui loa o ka ʻāina. Aia ke kaiāulu e ulu nei i ka panalāʻau o Buenos Aires, e ka muā wai ʻo Rio de la Plata. ʻO ka mea a ka poʻe kūwaho e ʻike ʻole ai paha ʻo ka moku ʻo Buenos Aires kahi kaiāulu mahiʻai nui. Ma kahi o 20% o ko Argentina hua palaoa a me nā huahana mai ka ʻāina a manaʻo ʻia he mea nui i ka hoʻokele waiwai o ka lāhui. ʻO ka hapa nui o ka ʻāina i ka waiwai nui i ka momona, akā pālahalaha loa ia a palupalu hoʻi i nā kūlana ʻino loa i hopena i nā kau hou a me nā kahe.
Aia kekahi mau kahawai liʻiliʻi, nā wai wai, a me nā kahawai aia ma Buenos Aires. I nā makahiki he 40 i hala iho nei, ua hoʻonui ʻia ka ua ma Buenos Aires e 20%. Ua hoʻonui ka ua i ka muliwai Salado. ʻO nā wahi e pili ana i ka muliwai e like me ka muliwai ʻo Salado hiki ke loaʻa i ka wai i nā wā ua o ka wā. I loko o kekahi mau makahiki, ua hōʻiliʻili ka muliwai Salado i nā ʻano mea like ʻole ma muli o ka ua nui, e ʻohi ana i ka nui o ka sedimentation a me ka silt. Ke mālama ʻole ʻia kahi kahawai, e ʻākoakoa nā ʻōpala i ka hala ʻana o ka manawa, a hiki i ka muliwai i bottleneck. Pākuʻi kēia hana i nā hiki i nā kahawai e hāʻawi i ka wai e kahe kūlohelohe a hoʻonui i nā kiʻekiʻe o ka wai, e hoʻoulu ana i kahi kahawai.
No nā makahiki he nui, ua kūkākūkā nā alakaʻi kaiāulu a me nā poʻe kālai'āina i nā manaʻo a me nā hāmeʻa e like me ka palalaha ʻana i ka muliwai a me ka ʻoka ʻana i kahi kahawai hohonu aʻe nā manaʻo e hōʻemi i ka hiki ʻana i ka wai, akā ʻaʻole hiki ʻO nā hana loiloi muliwai a hiki i kēia manawa.
ka pāʻoihana
Ma ʻApelila o 2017, ua ʻae ka World Bank a He $ 300 miliona loan fa i ʻole ka papahana pale ʻana i ka wai hālana. I loko o 18 mau mahina i hala aku nei, ua hoʻolilo ka nui o nā mea hana kōkō ʻana i ka manawa nui i ka hana ʻana e hoʻomaikaʻi i nā kūlana kai eʻe ma ia wahi. I kēia manawa ua hemo nā mea hana ma luna o 5.23 miliona yd³ (4 miliona m³) o ke one a me ka sediment mai ka muliwai Salado e hoʻohana ana i kahi papa dredges.
No ke kōkua ʻana i ka hoʻokele waipū ma nā wahi kai kūloko, a me ka lawe ʻana o nā pūʻali ʻO Helport lāua ʻo Chediack (UTE) ua koho ʻo ʻelua i ka Ellicott Series 1270 Dragon® cutter suction dredges i kūpono no kēia ʻano o ka wai kahawai noi. Hiki i ke kahawai ʻo 1270 Dragon® ke hele i ka hohonu o ka hohonu a hiki i ka 50 '(15 m). Eia kekahi, ʻo kēia pahu pālua me kahi pālua me 18 "pālua a paʻa ʻia i ʻelua mauhelena hoʻokaʻawale, ʻo ia ka mea i hoʻolaʻa ʻia i ka pā kolo no ka hana maikaʻi loa.
He aha ka hana hou aʻe
Malia paha ka paʻakikī nui e kū ana i nā poʻe hana e hana nei i ka hana ma ka hoʻopuka ʻana i nā ala lepo i ka wā i hoʻoilo ai nā ala e hoʻōki ana i ke ala e hiki ʻole ai i ka wahi e hele ai ka hana. ʻO ke komo ʻana i nā kahawai ma nā wahi e puni ana i ka hopena ua hōʻoiaʻiʻo nō hoʻi he paʻakikī a komo a he palena loa. Eia nō naʻe, ma muli o kēia mau pilikia kino, ka maʻalahi o ka hoʻoilo ʻana o ka Ellicott Dragon® e wehe a hoʻokaʻawale hou i ka poʻe holoholo i ka holo i loko o nā wahi paʻakikī a hiki ke kahawai. I nā kūlana e like me kēia he mea nui loa ke loaʻa i kahi dredge hiki i hiki ke kūpaʻa i kēia mau pilikia.
ʻOiai ka haki ʻana o ka muliwai Salado ʻaʻole e hōʻoiaʻiʻo i ka wā e hiki mai ana ka wai i ka wā e hiki mai ana, ʻo ia kekahi o nā ala e hiki ke hopena e hoʻēmi ai i ka hōʻemi ʻana i nā kai ʻana i mua. Ke hoʻihoʻi ʻia ka muliwai i kahi ʻāina kūlohelohe ma o ka lawe ʻana aku i ka nui o ka lepo, kahe ka wai o ka wai ma kona ala kūlohelohe i kahi pahu kaila. Eia kekahi, hōʻiliʻili ʻia ke one mai nā hana hoʻoilo wai a laila e hoʻoulu ʻia a hoʻohana ʻia i ka hoʻomaikaʻi ʻana i nā wahi haʻahaʻa, hoʻonui i ke kiʻekiʻe ʻāina, pēlā nō hoʻi i kōkua ai i ka hōʻemi ʻana i nā pōʻino o ke kūleʻa ʻana o nā kahe i nā kaiāulu haʻahaʻa.