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Abstrak :
Bendungan merupakan sebuah bangunan yang mempunyai risiko tinggi jika terjadi keruntuhan yang disebabkan oleh gempa bumi. Keruntuhan akibat gempa bumi pada bendungan dapat menyebabkan adanya korban jiwa, dan juga kerugian materi pada penduduk yang bermukim dekat dengan bendungan. Tujuan dilakukan penelitian ini adalah untuk mengevaluasi dan merekomendasikan pola operasi pada bendungan di Pulau Jawa dan untuk mengklasifikasikan risiko dan bahaya yang terjadi pada konstruksi bendungan akibat adanya gempa bumi di Pulau Jawa. Pada analisis risiko gempa bumi pada sistem operasi bendungan di pulau jawa ini menggunakan metode analisis kualitatif dengan melakukan wawancara kepada narasumber yang sudah ahli dan berpengalaman selama berpuluh tahun di bidang kegempaan maupun keairan setelah itu dianalisis menggunakan metode Miles dan Hubberman mulai dari pengumpulan data, reduksi data, penyajian data, dan kesimpulan. Setelah didapatkan hasil dari analisis dengan metode Miles dan Huberman dilakukan proses perbandingan dengan bendungan yang dijadikan benchmarking. Hasil dari analisis dan perbandingan menunjukan bahwa adanya kesamaan antara pendapat narasumber dan pola operasi bendungan mengenai adanya pengerukan pada bendungan yang diadakan minimal 5 (lima) tahun sekali untuk menghindari adanya pengendapan baik untuk lumpur ataupun sampah. disamping itu, perlu dilakukan pemeliharaan di lingkungan sekitar bendungan seperti memperbaiki jalur dan pagar hewan ternak, melakukan penanaman kembali pada daerah yang terkena erosi dan parit di bendungan, dan pembersihan rumput liar guna memperbaiki ekosistem di sekitar bendungan. Dan juga risiko terjadinya kerusakan bendungan akibat gempa bumi dapat dilihat dari dimana lokasi bendungan tersebut dibangun. Sebuah bendungan yang berada di wilayah dengan risiko gempa bumi yang tinggi, memiliki risiko lebih rendah jika dibangun dengan prinsip-prinsip rekayasa bangunan tahan gempa bumi. Di sisi lain, sebuah bangunan yang terletak di suatu daerah dengan sejarah kegempaan kecil, namun berada di tanah yang berpotensi likuifaksi mugkin memiliki risiko gempa bumi yang tinggi. ......The dam is one of construction that has a high risk of collapse if caused by an earthquake. A collapse due to an earthquake in a dam can cause casualties, and also material loss to residents who live near the dam. The purpose of this research is to evaluate and recommend operating patterns on dams in Java and to classify risks and dangers that occur in dam construction due to earthquakes in Java. In the analysis of earthquake risk in the dam operating system on the island of Java using qualitative analysis methods by conducting interviews with experts who are experts and experienced for decades in the field of seismicity and water after it is analyzed using the Miles and Hubberman methods starting from data collection, data reduction, data presentation, and conclusion. After obtaining the results of the analysis using the Miles and Huberman method, a comparison process with the dam is used as a benchmarking. The results of the analysis and comparison show that there are similarities between the opinion of the sources and the pattern of dam operations regarding the dredging of the dam which is held at least once every 5 (five) years to avoid any deposition either for mud or garbage. In addition, maintenance needs to be carried out in the environment around the dam such as repairing animal lanes and fences, replanting erosion affected areas and ditches in the dam, and cleaning weeds to improve the ecosystem around the dam. And also the risk of damages caused by earthquakes can be seen from where the location of the dam was built. A dam in an area with high earthquake risk has a lower risk if it is built with the principles of earthquake resistant building engineering. On the other hand, a building that is located in an area with a small earthquake history, but is located on land that has the potential for liquefaction may have a high risk of earthquake.

Abstrak :
Fokus penelitian ini adalah untuk mendeskripsikan bantuan yang diberikan oleh Jepang melalui program bantuan ODA untuk sektor pertanian Indonesia khususnya Wonogiri dalam pembangunan Waduk Serbaguna Wonogiri dan dampak dari bantuan tersebut. Penelitian diawali dengan membahas kondisi sosial dan ekonomi di Wonogiri sebelum bantuan datang, kemudian bantuan yang diberikan Jepang dalam pembangunan waduk dan juga tindakan pemerintah Indonesia terkait pembangunan waduk serta dampak apa yang muncul setelah waduk dibangun bagi masyarakat Wonogiri. Skripsi ini mengambil tahun penelitian antara 1974 hingga 1983, pengambilan tahun 1974 dikarenakan bantuan Jepang mulai masuk ke Wonogiri sedangkan tahun 1983 diambil karena perubahan yang terjadi setelah waduk ada.

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The focus of this research is to describe aid who given by Japan through aid program of ODA for the agricultural sector of Indonesia especially Wonogiri in development of Multipurpose Dam Wonogiri and the impact of aid. This research begin with studying of social and economics condition in Wonogiri before aid come, then what aid that given by Japan in development of DAM and as well the action of Indonesia government related the DAM also what affect that emerging after the DAM built to Wonogiri society. This research take research year between 1974 until 1983, intake year 1974 because of Japan aid start step into Wonogiri while 1983 taken because change that happened after DAM was there.

Abstrak :
ABSTRACT
Strategic issues in dam operation and maintenance are important to meet domestic water needs and the study was conducted by the Dam Operational Improvement and SafetyProject (DOISP) in two phases. DOISP Phase I was establishedto continue the Dam Safety Program with the focus on the operationalimprovement and the safety of dams. The Dam Operational Improvement and Safety Project Phase II (DOISP Phase II) is a continuation of DOISP Phase I that previously has provided support to the completion of remedial and rehabilitation works and operational and safety improvement of 34 dams owned the Ministry of Public Works and Housing (MPWH) as well as the preparation of variousguidelines which relate to the dam management operation. Strategic issues in operation and maintenance are prepared in 2020-2024, strategic plan by the Directorate of Water Resources and Irrigation (Ministry of National Development Planning/Bappenas). Planning based on strategic issues in operation and maintenance is important because a dam and reservoir can support hydropower, navigation, recreation, flood control, irrigation, and water supply, with each multipurpose benefit having a significant social and economic impact at the local level, regional and national.

Abstrak :
ABSTRAK
Rockfill dams have better stability than homogeneous soil dams. It allows to design the dam more slim with a higher slope. The disadvantage of rockfill dam is in the core zone as an impermeable zone. Zoned vertical core rockfill dam is a combination of various material properties. Geometry and drainage design will affect the seepage and phreatic line properties that occur. Numerical modeling and calculations are used to calculate the seepage profile more accurately. The combination of the parameters of the permeability coefficient (K), reservoir water level (Δh) and the length of the seepage path (L) can be used to determine the relationship between parameters with the same unit. 2D modeling take into account saturated/unsaturated conditions with steady state on each parameter. This study uses the Jatibarang-Indonesia dam as a basic model. The seepage profile at condition K1 (k = 1x10-5cm/sec) is q/k = -0.0018 (h2/L)2 + 1.3496h2/L + 53.241 and the seepage profile K2 (k=1x10-7cm/s) is q/k = -0.1521 (h2/L)2 + 90.402h2/L + 5480.2. This equations can be used to estimate seepage that occurs in a dam of other rock fill zoned vertical core dam based on the permeability coefficient value (K) more practically for all values of Δh and L reviewed.

Abstrak :
ABSTRAK
The study assumes that Srinagarind Dam of Kanchanaburi province will be collapsed by overtopping with a final breach of trapezoidal shape due to heavy rainstorm. Subsequently, various forms of demolitions and dynamic flooding are identified using Dam Break and Hydrodynamic models of MIKE 11 by applying the principle of the Probable Maximum Flood (PMF). Srinagarind dam is a rock fill dam with it is crest at +185.00 m. from Mean Sea Level (MSL) and store a maximum volume of 17,745 million m3 of water at the beginning of the break. For dynamic flooding prediction, the maximum breach outflow discharge was 11,307 m3/s with a velocity of 5.39 m/s at 62.29 hours after the break. In addition, the maximum discharge, water level and flood duration at cross sections of main rivers are also extracted for flood zone identification into 4 zones which include: at Ban Phu Thong Maeo, Wang Dong Sub-district, Mueang Kanchanaburi district, the discharge is 14,231 m3/s, the maximum water level is +56.56 m. (MSL.) at 68.28 hr. after dam failure. At Ban Nuea, Ban Nuea Sub-district, Mueang Kanchanaburi district, the discharge is 14,081 m3/s and the maximum water level is +41.59 m. (MSL.) at 83.21 hr. after dam failure. At Ban Wang Khanai, Wang Khanai Sub-district, Tha Muang district, the discharge is 13,244 m3/s and the maximum water level is +37.671 m. (MSL.) at 93.24 hr. after dam failure. At Ban Luk Kae, Ban Don Khamin Sub-district, Tha Maka District, the discharge was 12,047 m3/s, the maximum water level is +18.92 m. (MSL.) at 107.26 hours after dam failure. Land use land cover (LULC) types are affected by the flood after the dam-break which would cover an area of 1,172.21 sq.km. (1) Urban and built-up area (City, town, and commercial areas), (2) Paddy field, (3) Field crop, (4) Orchard, (5) Horticulture, (6) Pasture and farm house, (7) Evergreen forest, (8) Deciduous forest, (9) Natural water bodies (10) Reservoir (11) Rangeland, and (12) Mine and pits are included. The most affected LULC is paddy field that covers an area of 331.88 sq.km. (28.32%). The second and third largest affected LULC are rangeland and field crop areas that covered an area of 285.66 sq.km. (24.37%) and 267.02 sq.km. (22.78%). The least affected LULC is a deciduous forest that covers area of 15.49 sq.km. (1.32%).

Abstrak :
ABSTRAK
The study assumes that Srinagarind Dam of Kanchanaburi province will be collapsed by overtopping with a final breach of trapezoidal shape due to heavy rainstorm. Subsequently, various forms of demolitions and dynamic flooding are identified using Dam Break and Hydrodynamic models of MIKE 11 by applying the principle of the Probable Maximum Flood (PMF). Srinagarind dam is a rock fill dam with it is crest at +185.00 m. from Mean Sea Level (MSL) and store a maximum volume of 17,745 million m3 of water at the beginning of the break. For dynamic flooding prediction, the maximum breach outflow discharge was 11,307 m3/s with a velocity of 5.39 m/s at 62.29 hours after the break. In addition, the maximum discharge, water level and flood duration at cross sections of main rivers are also extracted for flood zone identification into 4 zones which include: at Ban Phu Thong Maeo, Wang Dong Sub-district, Mueang Kanchanaburi district, the discharge is 14,231 m3/s, the maximum water level is +56.56 m. (MSL.) at 68.28 hr. after dam failure. At Ban Nuea, Ban Nuea Sub-district, Mueang Kanchanaburi district, the discharge is 14,081 m3/s and the maximum water level is +41.59 m. (MSL.) at 83.21 hr. after dam failure. At Ban Wang Khanai, Wang Khanai Sub-district, Tha Muang district, the discharge is 13,244 m3/s and the maximum water level is +37.671 m. (MSL.) at 93.24 hr. after dam failure. At Ban Luk Kae, Ban Don Khamin Sub-district, Tha Maka District, the discharge was 12,047 m3/s, the maximum water level is +18.92 m. (MSL.) at 107.26 hours after dam failure. Land use land cover (LULC) types are affected by the flood after the dam-break which would cover an area of 1,172.21 sq.km. (1) Urban and built-up area (City, town, and commercial areas), (2) Paddy field, (3) Field crop, (4) Orchard, (5) Horticulture, (6) Pasture and farm house, (7) Evergreen forest, (8) Deciduous forest, (9) Natural water bodies (10) Reservoir (11) Rangeland, and (12) Mine and pits are included. The most affected LULC is paddy field that covers an area of 331.88 sq.km. (28.32%). The second and third largest affected LULC are rangeland and field crop areas that covered an area of 285.66 sq.km. (24.37%) and 267.02 sq.km. (22.78%). The least affected LULC is a deciduous forest that covers area of 15.49 sq.km. (1.32%).