Analisis Stabilitas Lereng Menggunakan Aplikasi Geostudio Pada Lereng Maindam Proyek Pembangunan Bendungan Jragung Di Kabupaten Semarang, Jawa Tengah

Mahdi, Sultan ilham (2023) Analisis Stabilitas Lereng Menggunakan Aplikasi Geostudio Pada Lereng Maindam Proyek Pembangunan Bendungan Jragung Di Kabupaten Semarang, Jawa Tengah. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Bendungan sebagai struktur penyimpan air harus direncanakan dan dirancang sejak awal dengan tingkat keamanan yang tinggi dan dengan kondisi Indonesia berada pada ring of fire dengan aktivitas seismik yang relatif tinggi. Bendungan Jragung terletak di desa Candirejo, bendungan ini merupakan bendungan berikat. Pada penelitian ini kami menganalisis stabilitas rangka bendungan dengan menggunakan metode Bishop. Analisis ini juga mengkaji pengaruh beban gempa OBE dan MDE. Penelitian ini dilakukan dengan membandingkan nilai software Geostudio dengan nilai perhitungan manual peneliti. Pada penelitian ini. Perhitungan dengan permodelan Geoslope di sisi hulu dengan muka air normal didapat angka kemanan tanpa gempa 2,065 > 1,5 (Aman), dengan beban gempa OBE 1,336 > 1,2 (Aman), dengan beban gempa MDE sebesar 0,466 ˂ 1 (Tidak Aman). pada sisi hilir dengan muka air normal didapat angka kemanan tanpa gempa 1,571 > 1,5 (Aman), dengan beban gempa OBE 1,224 > 1,2 (Aman), dengan beban gempa MDE sebesar 0,532 ˂ 1 (Tidak Aman). Pada sisi hulu dengan muka air banjir didapat angka kemanan tanpa gempa 2,091 > 1,5 (Aman), dengan beban gempa OBE 1,384 > 1,2 (Aman), dengan beban gempa MDE sebesar 0,465 ˂ 1 (Tidak Aman). Pada sisi hilir dengan muka air banjir didapat angka kemanan tanpa gempa 1,563 > 1,5 (Aman), dengan beban gempa OBE 1,219 > 1,2 (Aman), dengan beban gempa MDE sebesar 0,531 ˂ 1 (Tidak Aman). Pada sisi hulu dengan kondisi surut cepat didapat angka kemanan tanpa gempa 2,077 > 1,5 (Aman), dengan beban gempa OBE 1,543 > 1,2 (Aman), dengan beban gempa MDE sebesar 0,595 ˂ 1 (Tidak Aman). Pada sisi hulu dengan kondisi surut cepat didapat angka kemanan tanpa gempa 1,745 > 1,5 (Aman), dengan beban gempa OBE 1,334 > 1,2 (Aman), dengan beban gempa MDE sebesar 0,595 ˂ 1 (Tidak Aman). Pada sisi hilir dengan kondisi surut cepat didapat angka kemanan tanpa gempa 1,745 > 1,5 (Aman), dengan beban gempa OBE 1,334 > 1,2 (Aman), dengan beban gempa MDE sebesar 0,565 ˂ 1 (Tidak Aman). Pada sisi hulu dengan kondisi after construction didapat angka kemanan tanpa gempa 2,101 > 1,5 (Aman), dengan beban gempa OBE 1,606 > 1,2 (Aman), dengan beban gempa MDE sebesar 0,650 ˂ 1 (Tidak Aman). Pada sisi hilir dengan kondisi after construction didapat angka kemanan tanpa gempa 1,848 > 1,5 (Aman), dengan beban gempa OBE 1,426 > 1,2 (Aman), dengan beban gempa MDE sebesar 0,593 ˂ 1 (Tidak Aman)
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Dams as water storage structures must be planned and designed from the beginning with a high level of safety and with the condition that Indonesia is in the ring of fire with relatively high seismic activity. Jragung Dam is located in Candirejo village, this dam is a bonded dam. In this study we analyzed the stability of the dam frame using the Bishop method. This analysis also examines the influence of OBE and MDE earthquake loads. This research was conducted by comparing the value of Geostudio software with the value of the researcher's manual calculation. In this research. Calculation with Geoslope modeling on the upstream side with normal water level obtained a safety number without earthquake 2.065 > 1.5 (Safe), with OBE earthquake load 1.336 > 1.2 (Safe), with MDE earthquake load of 0.466 ˂ 1 (Unsafe). On the downstream side with normal water level, the safety number is obtained without earthquake 1.571 > 1.5 (Safe), with OBE earthquake load 1.224 > 1.2 (Safe), with MDE earthquake load of 0.532 ˂ 1 (Unsafe). On the upstream side with flood water level, the safety number is obtained without earthquake 2.091 > 1.5 (Safe), with OBE earthquake load 1.384 > 1.2 (Safe), with MDE earthquake load of 0.465 ˂ 1 (Unsafe). On the downstream side with flood water level, the safety number is obtained without earthquake 1.563 > 1.5 (Safe), with OBE earthquake load 1.219 > 1.2 (Safe), with MDE earthquake load of 0.531 ˂ 1 (Unsafe). On the upstream side with fast receding conditions, the safety number is obtained without earthquake 2.077 > 1.5 (Safe), with OBE earthquake load 1.543 > 1.2 (Safe), with MDE earthquake load of 0.595 ˂ 1 (Unsafe). On the upstream side with fast tidal conditions, the safety number is obtained without earthquake 1.745 > 1.5 (Safe), with OBE earthquake load 1.334 > 1.2 (Safe), with MDE earthquake load of 0.595 ˂ 1 (Unsafe). On the downstream side with fast receding conditions, the safety number is obtained without earthquake 1.745 > 1.5 (Safe), with OBE earthquake load 1.334 > 1.2 (Safe), with MDE earthquake load of 0.565 ˂ 1 (Unsafe). On the upstream side with after construction conditions, the safety number is obtained without earthquake 2.101 > 1.5 (Safe), with OBE earthquake load 1.606 > 1.2 (Safe), with MDE earthquake load of 0.650 ˂ 1 (Unsafe). On the downstream side with after construction conditions, the safety number is obtained without earthquake 1.848 > 1.5 (Safe), with OBE earthquake load 1.426 > 1.2 (Safe), with MDE earthquake load of 0.593 ˂ 1 (Unsafe)

Item Type: Thesis (Other)
Uncontrolled Keywords: Tubuh Bendungan, Gempa, Rembesan, Stabilitas Longsoran, Efektif; Main Dam, Earthquake, Seepage, Slope Stability, Effevtive
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering > TC167 Dams, reservoirs
Divisions: Faculty of Vocational > Civil Infrastructure Engineering (D4)
Depositing User: Sultan ilham Mahdi
Date Deposited: 18 Aug 2023 07:07
Last Modified: 18 Aug 2023 07:07
URI: http://repository.its.ac.id/id/eprint/104089

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