?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=ANALISIS+KEDALAMAN+GERUSAN+LOKAL+DI+HILIR+KOLAM+OLAK%0D%0A%0D%0AVLUGHTER+DENGAN+VARIASI+GRADASI+SEDIMEN%0D%0A%0D%0A(UJI+LABORATORIUM)&rft.creator=%09Akbar+%2C+Dimastiar%09&rft.subject=620+Ilmu+teknik+dan+ilmu+yang+berkaitan&rft.description=Konstruksi+bendung+dibangun+untuk+memenuhi+kebutuhan+sumber+pengairan+agar%0D%0Adapat+disadap+ke+saluran+pengambilan.+Agar+bendung+tidak+rusak+akibat+gerusan+di%0D%0Ahilirnya+diperlukan+kolam+olak+sebagai+peredam+energi.+Tujuan+penelitian+adalah%0D%0Amenganalisis+perbandingan+hasil+gerusan+dengan+beberapa+variabel+seperti+gradasi%0D%0Asedimen%2C+debit+dan+waktu+aliran+sehingga+terjadi+keseimbangan.+Penelitian%0D%0Amenggunakan+alat+simulasi+gerusan+yang+terdapat+model+bendung+mercu+ogee%0D%0Adilengkapi+kolam+olak+vlughter+dengan+sedimen+terdiri+dari+dua+jenis+gradasi+yaitu%0D%0AS1+dan+S2.+Hasil+gerusan+digambarkan+melalui+software+Surfer+untuk+dianalisis.%0D%0ADengan+variasi+debit+didapatkan+nilai+gerusan+yang+semakin+besar.+Debit+yang+besar%0D%0Amenghasilkan+gerusan+yang+besar+pula+begitupun+sebaliknya.+Dengan+variasi%0D%0Asedimen+gerusan+bergantung+pada+diameter+rerata+butiran.+Gradasi+butiran+S2+yang%0D%0Alebih+kecil+daripada+S1+menghasilkan+gerusan+yang+lebih+besar.+Sedangkan+dengan%0D%0Avariasi+waktu+awal+pengaliran+menghasilkan+pertambahan+gerusan+yang+besar.%0D%0AAkan+tetapi+pertambahan+gerusan+nilainya+mengecil+setelah+dialiri+selama+rentang%0D%0Awaktu+tertentu.+Sehingga+dapat+disimpulkan+bahwa+gerusan+memiliki+hubungan%0D%0Anonlinier+terhadap+waktu+aliran.%0D%0AKesimpulannya+adalah+gradasi+butiran+sangat+mempengaruhi+hasil+gerusan+yang%0D%0Amemiliki+hubungan+berbanding+lurus+dengan+debit.+Tetapi+hasil+gerusan+memiliki%0D%0Ahubungan+nonlinear+terhadap+waktu%2C+dimana+semakin+lama+waktu+aliran%0D%0Apertambahan+gerusan+semakin+mengecil+atau+bahkan+stagnan.+Hal+tersebut%0D%0Amenandakan+bahwa+gerusan+sudah+terjadi+keseimbangan+(equilibrium).%0D%0AKata+Kunci+%3A+Alat+Simulasi+Gerusan%2C+Hasil+Gerusan%2C+Keseimbangan%2C+dan+Surfer.%0D%0AWeir+construction+is+built+to+meet+the+needs+of+irrigation+sources+to+be+tapped+into%0D%0Athe+intake+channel.+In+order+for+the+weir+not+to+be+damaged+due+to+scour%0D%0Adownstream%2C+a+swift+pond+is+needed+as+an+energy+reducer.+The+purpose+of+the+study%0D%0Awas+to+analyze+the+comparison+of+scour+results+with+several+variables+such+as%0D%0Asediment+gradation%2C+discharge+and+flow+time+so+that+a+equilibrium+occurs.+The+study%0D%0Aused+a+scour+simulation+tool+that+contained+an+ogee+lighthouse+weir+model+equipped%0D%0Awith+a+vlughter+pool+with+sediment+consisting+of+two+types+of+gradations%2C+namely%0D%0AS1+and+S2.+The+scour+results+are+described+through+Surfer+software+to+be+analyzed.%0D%0AWith+the+variation+of+discharge%2C+the+scour+value+is+found+to+be+getting+bigger.+Large%0D%0Adischarges+produce+large+scour+and+vice+versa.+With+sediment+variations+scour%0D%0Adepends+on+the+average+diameter+of+the+grains.+S2+grain+gradation+which+is+smaller%0D%0Athan+S1+produces+greater+scour.+While+with+the+variation+of+the+initial+time+of%0D%0Aflowing+produces+a+large+increase+in+scour.+However%2C+the+scour+increase+decreases%0D%0Aafter+being+flowed+for+a+certain+period+of+time.+So+it+can+be+concluded+that+scour%0D%0Ahas+a+nonlinear+relationship+to+flow+time.%0D%0A%0D%0AThe+conclusion+is+that+grain+gradation+greatly+affects+the+scour+results+which+have%0D%0Adirectly+proportional+relationship+with+the+discharge.+But+the+scour+results+have+a%0D%0Anonlinear+relationship+to+time%2C+where+the+longer+the+flow+time+the+scour+increase+is%0D%0Agetting+smaller+or+stagnant.+This+indicates+that+the+scour+has+occurred+balance%0D%0A(equilibrium).%0D%0AKeywords+%3A+Scour+Simulation+Tool%2C+Scour+Results%2C+Equilibrium%2C+and+Surfer.&rft.publisher=TEKNIK+&rft.date=2024-04-05&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F85290%2F1%2F2015011011%2520Akbar%2520Dimastiar%2520-%2520Skripsi%2520Hidroteknik%2520-%2520Akbar%2520Dimastiar.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F85290%2F2%2F2015011011%2520Akbar%2520Dimastiar%2520-%2520Skripsi%2520Hidroteknik%2520-%2520Akbar%2520Dimastiar%2520%25281%2529.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F85290%2F3%2F2015011011%2520Akbar%2520Dimastiar%2520-%2520Skripsi%2520Hidroteknik%2520-%2520Akbar%2520Dimastiar%2520%25282%2529.pdf&rft.identifier=+++Akbar+%2C+Dimastiar+++(2024)+ANALISIS+KEDALAMAN+GERUSAN+LOKAL+DI+HILIR+KOLAM+OLAK+VLUGHTER+DENGAN+VARIASI+GRADASI+SEDIMEN+(UJI+LABORATORIUM).++TEKNIK+%2C+UNIVERSITAS+LAMPUNG+.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F85290%2F