?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=ANALISIS+STABILITAS+LERENG%0D%0A(Studi+Kasus+di+Kelurahan+Sumur+Batu+Bandar+Lampung)%0D%0A%0D%0ASLOPE+STABILITY+ANALISYS%0D%0A(Case+Study+at+Sumur+Batu+Village+Bandar+Lampung)&rft.creator=FERIYANSYAH+H.%2C+0615011065&rft.description=ABSTRACT%0D%0A%0D%0ALandslide+or+mass+movement+of+soil+and+rock+on+the+slopes+is+a+common+natural+phenomenon.+In+principle%2C+slope+landslide+occurs+when+the+driving+force+on+slopes+greater+than+retaining+force.+Retaining+force+generally+influenced+by+the+strenght+of+rock+and+soil+density.+Meanwhile%2C+the+driving+force+is+influenced+by+the+size+of+the+angle+of+slope%2C+water%2C+heavy+loads+and+types+of+soil+and+rock.+If+both+of+these+forces+reach+a+certain+balance%2C+it+will+lead+to+stability+in+the+slope+position.%0D%0AFactors+affecting+the+landslide+can+be+varied%2C+natural+avalanches+occur+because+of+decreased+stability+of+a+slope%2C+due+to+degradation+of+soil+or+rock+along+its+time+and+age.+However%2C+there+are+many+landslide+events+caused+by+increased+pore+water+pressure+in+a+highly+permeable+layer%2C+and+by+the+influence+of+shocks%2C+such+as+the+earthquake+which+can+reduce+the+density+of+the+soil+below+the+slope.+Human+activities+such+as+making+rice+fields+and+ponds%2C+cutting+and+digging+on+slopes+without+calculation%2C+may+cause+slope+stability%2C+causing+lanslide+that+destroy+infrastructure+and+facilities+that+already+exist.%0D%0ASafety+Factor+Analysis+of+the+slope+has+a+very+important+role+in+the+planning+of+civil+constructions.+Important+parameters+needed+in+the+analysis+of+slope+stability+is+shear+strength%2C+slope+geometry%2C+stress+or+pore+water+seepage+force%2C+load+and+environmental+conditions+around+the+slopes.+To+state+stable+slopes+(steady)+declared+in+safe+condition+which+is+the+ratio+between+the+force+or+moment+against+the+occurrence+of+landslides+and+force+or+moment+that+causes+landslide.+Methods+of+soil+slope+safety+factor+calculation+commonly+used+such+as+Fellenius+(1927%2C+1936)+and+Janbu+Method+(1954%2C+1957%2C+1973).%0D%0AKeyword+%3A+Slope+Stabilty%2C+Safety+Factors%2C+Shear+Strenght%2C+Fellenius+Methods%2C+Janbu+Methods%0D%0AABSTRAK%0D%0A%0D%0AKelongsoran+atau+gerakan+massa+tanah+dan+batuan+pada+lereng+merupakan+fenomena+alam+yang+umum+terjadi.+Pada+prinsipnya%2C+kelongsoran+lereng+terjadi+bila+gaya+pendorong+pada+lereng+lebih+besar+dari+gaya+penahan.+Gaya+penahan+umunya+dipengaruhi+oleh+kekuatan+batuan+dan+kepadatan+tanah.+Sementara%2C+gaya+pendorong+dipengaruhi+oleh+besarnya+sudut+kemiringan+lereng%2C+air%2C+beban+serta+berat+jenis+tanah+dan+batuan.+Kedua+gaya+ini+bila+mencapai+keseimbangan+tertentu+maka+akan+menimbulkan+kestabilan+pada+kedudukan+lereng+tersebut.%0D%0AFaktor+yang+mempengaruhi+suatu+kelongsoran+bisa+beraneka+ragam%2C+secara+alami+longsoran+terjadi+karena+menurunnya+kemantapan+suatu+lereng%2C+akibat+degradasi+tanah+ataupun+batuan+bersamaan+waktu+dan+usianya.+Namun+demikian%2C+terdapat+beberapa+kejadian+kelongsoran+yang+disebabkan+oleh+bertambahnya+tekanan+air+pori+dalam+lapisan+yang+sangat+permeable%2C+dan+oleh+pengaruh+dari+guncangan%2C+misalnya+gempa+yang+dapat+mengurangi+kepadatan+tanah+dibawah+lereng.+Aktivitas+manusia+seperti+membuat+sawah+dan+kolam%2C+mengadakan+pemotongan+dan+penggalian+pada+lereng+tanpa+perhitungan%2C+dapat+menyebabkan+terganggunya+kemantapan+lereng%2C+sehingga+terjadi+longsoran+yang+merusak+prasarana+dan+sarana+yang+telah+ada.%0D%0AAnalisis+Faktor+Keamanan+lereng+memiliki+peran+yang+sangat+penting+pada+perencanaan+konstruksi-konstruksi+sipil.+Parameter+penting+yang+dibutuhkan+dalam+analisis+stabilitas+lereng+adalah+kuat+geser%2C+geometri+lereng%2C+tegangan+air+pori+atau+gaya+rembesan%2C+beban+serta+kondisi+lingkungan+sekitar+lereng.+Untuk+menyatakan+lereng+dalarn+kondisi+stabil+(mantab)+dinyatakan+dengan+angka+aman+yang+merupakan+rasio+antara+gaya+atau+momen+yang+melawan+terjadinya+longsor+dan+gaya+atau+momen+yang+menyebabkan+terjadinya+kelongsoran.+Metode+perhitungan+faktor+keamanan+tanah+lereng+yang+umum+digunakan+antara+lain+metode+Fellenius+(1927%2C+1936)+dan+metode+Janbu+(1954%2C+1957%2C+1973).%0D%0AKata+kunci+%3A+Faktor+Keamanan%2C+Kuat+Geser%2C+Stabilitas+Lereng%2C+Fellenius%2C+Janbu.&rft.publisher=FAKULTAS+TEKNIK&rft.date=2013-04-03&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5759%2F1%2F1.COVER.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5759%2F2%2F2.%2520ABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5759%2F3%2F3.%2520LEMBAR%2520PERNYATAAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5759%2F4%2F4.%2520LEMBAR%2520PENGESAHAN.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5759%2F5%2F5.%2520LEMBAR%2520PENGESAHAN%25202.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F5759%2F6%2F6.RIWAYAT%2520HIDUP%2520DAN%2520PENGANTAR.pdf&rft.format=text&rft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