?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=DESAIN+PENAMPANG+SUNGAI+WAY+BESAI%0D%0AMELALUI+PENINGKATAN+KAPASITAS+SUNGAI%0D%0AMENGGUNAKAN+SOFTWARE+HEC-RAS&rft.creator=TRI+UTAMI%2C+1115011106&rft.subject=Rekayasa+hidrolik+.+rekayasa+laut&rft.subject=Teknologi+lingkungan+.+rekayasa+sanitasi&rft.description=Sungai+Way+Besai+terletak+di+kecamatan+Sumberjaya%2C+Kabupaten+Lampung+Barat%0D%0Ayang+merupakan+salah+satu+anak+sungai+dari+sungai+Tulang+Bawang.+Saat+ini%0D%0Asungai+Way+Besai+telah+dimanfaatkan+sebagai+pembangkit+listrik+yang+dikenal%0D%0Adengan+nama+PLTA+Besai.+Kondisi+PLTA+saat+ini+mengalami+penurunan+pasokan%0D%0Aenergi+sebesar+40+MW%2C+hal+ini+dikarenakan+oleh+kondisi+tanah+pada+sungai+ini%0D%0Ayang+bersifat+%E2%80%9Cmetastable%E2%80%9D+yang+mengakibatkan+pendangkalan+penampang+sungai%0D%0Asecara+cepat.+Sehinga+dibutuhkan+peningkatan+penampang+sungai+sampai+pada%0D%0Akondisi+awal%2C+dimana+pasokan+energi+di+PLTA+tersebut+mecapai+90+MW.%0D%0AUntuk+langkah+awal+dalam+meningkatan+kapasitas+sungai+Way+Besai+dibutuhkan%0D%0Aproses+simulasi+hidrolika+sungai+yang+dipermudah+dengan+menggunakan+Program%0D%0AHydrologic+Engineering+Center-River+Analysis+System+(HEC-RAS).+Program%0D%0AHEC-RAS+dapat+membantu+memodelkan+aliran+penampang+sungai+pada+kondisi%0D%0Aexisting+dan+normalisasi+yang+menggunakan+opsi+aliran+steady+flow+dan+input+data%0D%0Aberupa+data+debit+maksimum.+Output+dari+pemodelan+menggunakan+program%0D%0AHEC-RAS+ini+dapat+dilihat+berupa+gambar+dan+tabel+yang+menyajikan+tentang%0D%0Akarakteristik+dari+penampang+sungai+tersebut.%0D%0ADari+hasil+analisis+diperoleh+bahwa+untuk+mencapai+kondisi+normalisasi%2C%0D%0Adilakukan+pengerukkan+sampai+pada+elevasi+%2B713%2C00+dengan+kapasitas+volume%0D%0Agalian+sebesar+2.435.590%2C09+m3.+Ketika+muka+air+sungai+mencapai+elevasi+Full%0D%0ASupply+Level+(FSL)+yaitu+pada+elevasi+%2B722%2C00+diperoleh+debit+maksimum+di%0D%0Apenampang+hilir+sungai+sebesar+57%2C19+m3%2Fs%2C+dengan+kapasitas+volume+air+mencapai%0D%0A1.471.185%2C77+m3.+Untuk+Reservoar+Surface+Area+sungai+Way+Besai+pada+kondisi%0D%0Anormalisasi+mengalami+peningkatan+sebesar+28%2C6%25+dari+kondisi+exsisting+yang%0D%0Aterukur+dari+Sta+0%2B000+sampai+3%2B391%2C45.%0D%0AKata+kunci+%3A+Sungai%2C+Debit%2C+Normalisasi%2C+Kalibrasi+Manning%2C+HEC-RAS%0D%0A%0D%0A%0D%0AABSTRAK+BAHASA+INGGRIS%0D%0A%0D%0AWay+Besai+river+is+located+in+Sumberjaya+subdistrict%2C+West+Lampung+district%2C%0D%0ALampung.+It+is+one+of+the+sub+river+from+Tulang+Bawang+river.+Way+Besai+river%0D%0Ahas+been+used+as+a+the+electric+power+source%2C+known+as+Besai+hydropower.+Besai%0D%0AHydropower+has+decreased+energy+supply+of+40+MW+from+the+supply+optimum+can%0D%0Areachs+90+MW.+his+is+due+to+the+catcment+area+conditions+of+the+Way+Besai+rivers%0D%0Aare+%22metastable%22+so+which+effected+in+the+shallowing+of+the+cross-section+quickly.%0D%0ASo+it+needs+the+capacity+increased+of+the+cross-section+of+the+river+until+the+early%0D%0Acondition+where+is+the+supply+can+reachs+90+MW.%0D%0AFor+the+first+step+in+improving+the+capacity+of+the+Way+Besai+river+needed%0D%0Ahydraulics+river+simulation+process+that+facilitated+by+using+Hydrologic%0D%0AEngineering+Center-River+Analysis+System+(HEC-RAS)+Program.+HEC-RAS%0D%0Aprogram+can+help+to+modeling+the+flow+of+cross-section+of+the+river+on+the+existing%0D%0Acondition+and+normalization+using+the+steady+flow+options+and+data+input%0D%0Aincluding+maximum+discharge+data.+The+output+of+modeling+using+HEC-RAS%0D%0Aprogram+can+be+seen+in+the+form+of+pictures+and+a+table+that+presents+the%0D%0Acharacteristics+of+a+cross-section+of+the+river.%0D%0AFrom+the+result+of+the+analysis+founded+that+to+reach+the+normalization+condition%2C%0D%0Aneeds+the+dredging+until+the+elevation+%2B713%2C00+level%2C+with+2.435.590%2C09+m3+of%0D%0Avolume+capacity+of+dredging.+When+the+water+level+of+the+river+reachs+Full+Supply%0D%0ALevel+(FSL)+elevation+that+is+on+elevation+%2B722%2C00+level+founded+that+the%0D%0Amaximum+discharge+in+the+downstream+in+the+amount+of+57%2C19+m3%2Fs%2C+with+water%0D%0Avolume+capacity+in+the+1.471.185%2C77+m3.+For+the+Reservoir+Surface+Area+in+Way%0D%0ABesai+river+has+increased+with+28.6%25+from+the+exsisting+condition+that+recorded%0D%0Afrom+Sta+0%2B000+level+until+sta+3%2B391%2C45+level%0D%0AKeywords%3A+Debit+%2CHEC-RAS%2C+Manning+calibration+%2C+Normalization%2C+River.&rft.publisher=FAKULTAS+TEKNIK&rft.date=2016-04-25&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F22113%2F1%2FABSTRACT%2520%2528ABSTRAK%2529.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F22113%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F22113%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++TRI+UTAMI%2C+1115011106++(2016)+DESAIN+PENAMPANG+SUNGAI+WAY+BESAI+MELALUI+PENINGKATAN+KAPASITAS+SUNGAI+MENGGUNAKAN+SOFTWARE+HEC-RAS.++FAKULTAS+TEKNIK%2C+UNIVERSITAS+LAMPUNG.+++++&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