ʻO Cutter Suction Dredger - ʻO ka Riverine ikaika a me ka mea ʻeli kai

A ʻOki ʻoki ʻoki ʻana i ka pahu pahu(CSD) ʻoi aku ma mua o kahi moku; ʻo ia ka mea kanu ʻeli i hoʻohui ʻia, kaulana ʻo ia kekahi o nā mea hana maʻalahi a maikaʻi loa no ka ʻeli ʻana ma lalo o ka wai, hoʻolaʻa ʻāina, a me ka hohonu o ke kahawai. ʻO kona silhouette kiʻiʻoniʻoni, e hōʻike ana i ke poʻo ʻoki ʻoki ikaika ma ka hope o kahi alapiʻi, he hōʻailona ia o ke akamai o ke kanaka i ka hoʻohana ʻana i nā kumuwaiwai subaqueous, ʻo ia hoʻi i ke gula alluvial a me ka eli tin.

ʻO ke kumu hana o kahi CSD he mana nani. ʻO ke poʻo ʻoki ʻoki, hoʻolako ʻia me nā niho paʻakikī, hoʻoheheʻe me ka mīkini i nā mea i lalo o ka wai—he one, pālolo, ʻiliʻili, a i ʻole nā ​​​​mea i hoʻopaʻa ʻia. I ka manawa like, hana nā pamu centrifugal ikaika i kahi ʻūhā, e omo ana i ka hui ʻana i hoʻokuʻu ʻia (slurry) ma o ka paipu momi. Lawe ʻia kēia slurry ma kahi lōʻihi ma o ka pipeline, i kahi mea kanu hana ma uka a i ʻole i kahi i koho ʻia no ka hoʻolei ʻana a i ʻole kahi hoʻihoʻi.

ʻO kamea ʻoki ʻoki ʻana i ka pahu pahuAia ke akamai i kāna hana mau. ʻAʻole like me ka hopu a i ʻole nā ​​pahu pahu pahu e hana maʻamau, ʻoki ʻia ka CSD, ʻokiʻoki, a lawe i nā mea i loko o kahi kaʻina hana ʻole a pau ʻole, e hopena i ka hana maikaʻi ʻole. ʻO kona mobility kekahi waiwai nui. Me ka hoʻohana ʻana i kahi ʻōnaehana spuds (hanchoring piles) a me nā winch, hiki i ka dredger ke hoʻoluli iā ia iho i kahi ʻāʻī ma ka ʻaoʻao o ka hana, me ka hoʻomaʻemaʻe ʻana i kahi ākea me ka ʻole o ka hoʻonohonoho hou ʻana.

Ma ka pōʻaiapili o ka ʻeli gula, ʻoi aku hoʻi ma nā kahawai a me nā waihona placer waho, he mea nui ka CSD. Hiki iā ia ke komo a hana i nā ʻāpana gula i kanu ʻia ma lalo o nā ʻāpana o ka overburden a me ka wai, e hānai pono ana i ka slurry i kahi mea kanu holoi ma luna o ka ʻāina. ʻO nā CSD hou he mea kupanaha o ka hana maʻamau. Hiki ke hoʻolikelike ʻia me nā lōʻihi o ke alapiʻi like ʻole, nā hoʻolālā poʻo ʻokiʻoki no nā mea like ʻole, nā mana pahū, a me nā ʻōnaehana hoʻonohonoho ikaika no nā hana moana pololei.

Mai ka mālama ʻana i nā aʻa koʻikoʻi o ke kālepa honua ma o ka hoʻonui ʻana i nā awa a me nā ala hoʻokele i ka hoʻokumu ʻana i ʻāina hou mai ke kai a me ka wehe ʻana i ka waiwai mineral o lalo o ka wai.mea ʻoki ʻoki ʻana i ka pahu pahuhe hōʻike i ka hiki ke hana ʻia. Hana ia i kahi hiki ʻole i nā mīkini hoʻoneʻe honua kuʻuna, e hoʻohuli i nā pilina paʻakikī ma waena o ka ʻāina a me ka wai i mau ʻāpana o ka manawa kūpono a me ka holomua.