Ntchito zowononga zikuyenda bwino pa Bald Head Island, pamene makontrakitala amasuntha mchenga kuchokera ku Jaybird Shoals kumtunda kuti ateteze miyala ya rock groin ndikuwonjezera zinthu ku South Beach.

Marinex Construction Co. dredge idayamba kukoka mchenga pafupifupi milungu itatu yapitayo ndipo pafupifupi gawo limodzi mwa magawo atatu amaliza ntchitoyo, akuluakulu akuti.Amagwira ntchito m’nyengo yachisanu kuti asasokoneze akamba a m’madzi amene akukhala zisa zawo komanso mitundu ina ya nsomba imene imasamuka.

Dale McPherson, woyang'anira malo a injiniya Erik Olsen, adati 24-inch dredge imayenda pafupifupi ma cubic mayadi 10,000 a mchenga patsiku, koma anali ndi tsiku limodzi pomwe amakoka ma kiyubiki mayadi 30,000.Mgwirizano wa Mudzi wa $11.7-miliyoni umafuna kuyika mchenga wokwana ma kiyubiki mayadi 1.1 miliyoni.

Ntchitoyi imagwira ntchito zingapo.Choyamba, imayika mchenga kumbuyo ndi mbali ina ya rock groin komwe magombe a Kumadzulo ndi Kumwera amakumana.Kuyika kumeneko kumatchedwa fillet.Ntchitoyi ipereka mchenga kumphepete mwa nyanja ndikuphimba machubu 13 odzaza mchenga a geotextile omwe amathandizira kuti South Beach isagwere munjira yapafupi yotumizira.

Rock groin - imodzi yokha mwa mtundu wake m'boma - imagwiritsa ntchito miyala ikuluikulu yokonzedwa ngati mkono wopindika kuti ikole mchenga wamchenga womwe umasamuka kumtunda wautali.

Ponseponse, kugwetsaku kumapanga berm pakati pa 200 ndi 250-mita yotambasula pafupifupi theka la kilomita, atero a Jeff Griffin, wothandizira woyang'anira mudzi komanso chitetezo cha m'mphepete mwa nyanja.

McPherson adati ogwira ntchito akubweretsa mchenga wapamwamba kwambiri kumtunda ndipo sanakumanepo ndi zovuta zilizonse.Tsiku lina adagunda mulu wa malasha amphamvu mosayembekezereka koma mwachangu adayikanso mpatawo kuti apewe khala.Ogwira ntchito pamphepete mwa nyanja adachotsa nkhonya zonse nthawi yomweyo.Akuluakulu a m'mudzimo akukhulupirira kuti malasha atha kugwa kalekale kuchokera ku imodzi mwa sitima zapamadzi zomwe nthawi ina zinkadutsa ku Lower Cape Fear.

Chitoliro cha dredge chimaphatikizapo chipangizo chogawanitsa chomwe chimalola ogwira ntchito kuyika mchenga m'mbali mwa gombe popanda kuyikanso chitolirocho.

Chotsatira chidzakhala cha Bradley Industrial Textiles kuti alowe m'malo mwa machubu angapo odzaza mchenga, Griffin adanena.Machubu olowa m'malo azikhala ndi zokutira kuti azitha kupirira kuwala kwa ultraviolet pomwe sakutidwa ndi mchenga, adatero.Mgwirizanowu ndi wa $1.04-miliyoni.

Pantchito yomanga, oyenda m'mphepete mwa nyanja amafunsidwa kuti apewe madera otchingidwa ndi mipanda komanso kuti angogwiritsa ntchito mayendedwe otchingidwa ndi mchenga podutsa paipi ya dredge.