?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=ANALISIS+KEDALAMAN+GERUSAN+LOKAL+(LOCAL+SCOURING)+DI%0D%0AHILIR+BANGUNAN+PELIMPAH+(STEPPED+MODIFIED+SPILLWAY)%0D%0A%0D%0ADENGAN+MODEL+FISIK+2D&rft.creator=WAHYU+HADI+KUNCORO%2C+1515011110&rft.subject=600+Teknologi+(ilmu+terapan)&rft.subject=620+Ilmu+teknik+dan+ilmu+yang+berkaitan&rft.description=Bangunan+pelimpah+(spillway)+merupakan+struktur+hidraulik+yang+keberadaannya%0D%0Asangat+penting+karena+dibangun+untuk+melepaskan+kelebihan+(Surplus)+air+atau%0D%0Adebit+banjir+yang+tidak+dapat+ditampung+di+dalam+bendungan.+kapasitas+spillway%0D%0Ayang+tidak+cukup+dalam+mengalihkan+debit+banjir+bisa+menyebabkan+runtuhnya%0D%0Abendungan.%0D%0AAnalisis+hidrolika+penelitian+ini+menggunakan+desain+bangunan+pelimpah+(Stepped%0D%0Amodified+Spillway)+dengan+model+fisik+2-D+dan+sedimen+yang+digunakan+adalah%0D%0Apasir+dengan+diameter+seragam+yaitu+1%2C18+mm+lolos+ayakan+nomor+16+dan+tertahan%0D%0Apada+ayakan+ukuran+0%2C18+mm.+Penelitian+ini+dilakukan+5+kali+pengamatan+setiap%0D%0Aketinggian+muka+air+di+hulu+selama+25+menit.%0D%0ABerdasarkan+hasil+analisis%2C+terdapat+perbedaan+Kedalaman+gerusan+antara+hasil%0D%0Apengamatan+di+laboratorium+dengan+menggunakan+metode+Lacey%2C+Wu%2Cdan%0D%0AVeronesse.+Nilai+yang+diperoleh+dan+menunjukan+bahwa+metode+Lacey+yang%0D%0Amendekati+hasil+laboratorium+adalah+nilai+gerusan+maksimum+(dsmax)+terjadi+pada%0D%0Aketinggian+air+di+hulu+(H0)+3+cm+sebesar+0%2C0532+m+perhitungan+Lacey+sedangkan%0D%0Apada+pengamatan+laboratorium+di+dapat+nilai+gerusan+maksimum+(%CE%94ds)+sebesar%0D%0A0%2C076+m.+Hal+ini+dikarenakan+adanya+keseimbangan+yang+telah+tercapai.+Semakin%0D%0Adalam+gerusan+lokal+yang+terjadi+maka+semakin+banyak+volume+sedimen+yang%0D%0Aterbawa+dibagian+hilir+pelimpah.%0D%0A%0D%0AKata+kunci+%3A+Pelimpah+stepped+modified+spillway%2C+gerusan+lokal%2C+sedimen.%0D%0ASpillway+is+a+hydraulic+structure+whose+existence+is+very+important+because+it+is%0D%0Abuilt+to+release+excess+water+or+flood+discharge+that+cannot+be+accommodated+in+the%0D%0Adam.+Insufficient+spillway+capacity+in+diverting+flood+discharge+can+cause+the+dam%0D%0Ato+collapse.%0D%0AThe+hydraulics+analysis+of+this+study+used+a+spillway+design+(Stepped+modified%0D%0ASpillway)+with+a+2-D+physical+model+and+the+sediment+used+was+sand+with+a+uniform%0D%0Adiameter+of+1.18+mm+which+passed+sieve+number+16+and+was+retained+on+a+0.18+mm%0D%0Asieve.+This+research+was+carried+out+5+times+for+every+25+minutes+of+upstream+water%0D%0Alevel+observations.%0D%0ABased+on+the+results+of+the+analysis%2C+there+are+differences+in+the+scour+depth+between%0D%0Athe+observations+in+the+laboratory+using+the+Lacey%2C+Wu%2C+and+Veronesse+methods.%0D%0AThe+value+obtained+and+shows+that+the+Lacey+method+which+is+close+to+the%0D%0Alaboratory+results+is+the+maximum+scour+value+(dsmax)+that+occurs+at+the+water+level%0D%0Aupstream+(H0)+3+cm+of+0.0532+m+Lacey's+calculation%2C+while+in+laboratory%0D%0Aobservations+the+maximum+scour+value+(%CE%94ds)+of+0.076+m.+This+is+because+a+balance%0D%0Ahas+been+achieved.+The+deeper+the+local+scour+that+occurs%2C+the+more+volume+of%0D%0Asediment+carried+downstream+of+the+spillway.%0D%0A%0D%0AKey+words+%3A+Stepped+modified+spillway%2C+local+scour%2C+sediment.&rft.publisher=FAKULTAS+TEKNIK&rft.date=2021&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F61714%2F1%2F1.%2520ABSTRAK%2520-%2520WAHYU%2520HADI%2520KUNCORO.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F61714%2F2%2F2.%2520SKRIPSI%2520FULL%2520-%2520wAHYU%2520hADI%2520kUNCOROl.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F61714%2F3%2F3.%2520SKRIPSI%2520FULL%2520TANPA%2520BAB%2520PEMBAHASAN%2520-%2520WAHYU%2520HD.pdf&rft.identifier=++WAHYU+HADI+KUNCORO%2C+1515011110++(2021)+ANALISIS+KEDALAMAN+GERUSAN+LOKAL+(LOCAL+SCOURING)+DI+HILIR+BANGUNAN+PELIMPAH+(STEPPED+MODIFIED+SPILLWAY)+DENGAN+MODEL+FISIK+2D.++FAKULTAS+TEKNIK%2C+UNIVERSITAS+LAMPUNG.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F61714%2F