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All Journal MEDIA KOMUNIKASI TEKNIK SIPIL Teras Jurnal Civil and Environmental Science Journal (CIVENSE) Bulletin of Civil Engineering
Hidayat, Muhammad Nurjati
Universitas Brawijaya
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science

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The Application of Modal Split Using Revealed and Stated Preference Techniques: A study in Malang Hidayat, Muhammad Nurjati
Civil and Environmental Science Journal (CIVENSE) Vol 1, No 1 (2018)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2018.00101.5

Abstract

In this study we investigate modal split and travel behaviour in Malang by conducting person trip survey in study area. The purpose is to understand respondents’ travel behaviour and their preferences in selecting mode of transport. This is carried out to understand what are respondents feel regarding their perception on mode of transportation that available to them. The data being used are Revealed Preference (RP) and Stated Preference (SP) data. The first data based on present situation of respondents (including respondents’ characteristics and daily travel information), while the second one is hypothetical scenario that has not available in present condition. These data then compared and analysed using Multinomial Logit Model (MNL).
Inspections of Hydro-Geotechnical on Ngancar Dam asmaranto, runi; Suryono, Antonius; Hidayat, Muhammad Nurjati
Civil and Environmental Science Journal (CIVENSE) Vol 2, No 2 (2019)
Publisher : Fakultas Teknik UB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2019.00202.5

Abstract

Besides having great benefits, dam also holds enormous potential dangers. The collapsed dam will cause devastating flood along the river resulting in loss of lives, properties, damage to public facilities and environment, especially in the downstream area. For safety and prevent the occurrence of the disaster, the operational of dam should always be monitored, inspected and maintained properly continually. With a good monitoring, dam managers will discover as early as possible the problems emerging in the dam, and then perform the appropriate steps to prevent the development of the problems. This paper will perform hydro-geotechnical analysis as a review current condition of slope stability based on the result of soil investigation on present dam condition and review instrumentations installed in Ngancar Dam
Pengoperasian Pintu Pembilas terhadap Efisiensi Penggelontoran Sedimen: Studi Kasus Bendung Alale Dermawan, Very; Cahya, Evi Nur; Hidayat, Muhammad Nurjati; Sholawatini, Nur
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 30, Nomor 1 (2024)
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/mkts.v30i1.60651

Abstract

Penelitian ini membahas pengujian model fisik hidrolik Bendung Alale untuk mengamati perilaku hidrolika aliran banjir rencana, kondisi hilir bendungan, dan penggelontoran sedimen. Pada penelitian ini dilakukan pengamatan model fisik hidrolik di laboratorium dengan skala 1 : 50. Uji pembilasan dilakukan untuk mengetahui efektivitas pembilasan, kondisi sedimentasi atau gerusan yang terjadi setelahnya. Bendung Alale mempunyai 3 pintu pembilasan di sebelah kanan bendung. Pembilasan dilakukan dengan menggunakan debit Q25th dengan durasi pengaliran 1 jam. Pintu pembilas cukup efektif untuk membilas sedimen dari hulu bendung. Sedimen yang terbawa hampir 50% pada semua skenario buka tutup pintu pembilas. Skenario pembilasan 6 (pintu 1 dan 2 tertutup dan pintu 3 terbuka penuh) mempunyai efisiensi tertinggi yaitu 53,81%.
Studi Material Tanah Longsor Akibat Gempa Lombok 2018 Hidayat, Muhammad Nurjati
Teras Jurnal : Jurnal Teknik Sipil Vol. 10 No. 2 (2020): Volume 10 Nomor 2 September 2020
Publisher : UNIVERSITAS MALIKUSSALEH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/tj.v10i2.330

Abstract

Abstrak Pada umumnya, tanah longsor terjadi dengan skala yang kecil dan dampak yang dihasilkan tidak parah sebagaimana letusan gunung berapi, gempa atau tsunami. Namun, perhatian terhadap bencana ini seringkali diabaikan oleh masyarakat dan perencanaan pembangunan kota. Ada beberapa faktor yang perlu diperhatikan dalam meneliti tanah longor, salah satunya adalah mineral tanah. Dalam studi ini, sampel tanah diambil dari Lombok Utara akibat dari gempa Lombok 2018. Penelitian ini dilakukan dengan mengelompokkan tanah berdasarkan USCS dan AASTHO, kemudian dilanjutkan dengan analisis mineralogi menggunakan XRD (X-Ray Diffraction) dan SEM (Scanning Electron Microscope). Berdasarkan klasifikasi USCS, tanah termasuk kategori pasir berlanau dan campuran lanau (SM); dan lempung anorganik dengan plastisitas rendah sampai sedang, lempung berkerikil, lempung berpasir, lempung berlanau, lempung kurus (lean clays). Pada klasifikasi AASHTOO, hasilnya adalah tanah berlanau (A-4); kerikil dan pasir yang berlanau atau berlempung (A-2-4); dan pasir halus (A-3). Berdasarkan hasil mineralogi menggunakan XRD dan SEM, material utama pada sampel tanah adalah Albite Calcian, Microline and Kuarsa. Kata kunci: longsor, mineralogi, XRD, SEM  Abstract Landslides generally occur on a small scale and the impact is not as severe as volcanic eruptions, earthquakes, or tsunamis. However, attention to these disasters is often ignored by the community and city development planning. In assessing the factors causing landslides there are many factors that need to be considered, one of which is soil minerals. The samples of soil in this study were taken from North Lombok as a result of the 2018 earthquake. This research is conducted by classifying the soil based on USCS and AASHTO, then proceed with mineralogical analysis using XRD (X-Ray Diffraction) and SEM (Scanning Electron Microscope). Based on USCS classification, the result of the analysis shows that soil samples have a classification of silty sand, and silt mixtures (SM); and inorganic clays or low to medium plasticity, gravelly clays, sandy clays, silty clays, lean clays (CL). For AASHTO classification, the result shows the sample belong to silty soil (A-4), silty or clayey gravel sand (A-2-4) and fine sand (A-3). Based on the results of mineralogical analysis using XRD and SEM, it is known that the dominant minerals making up the soil in the sample are Albite Calcian, Microline and Quartz Keywords: landslide, mineralogy, XRD, SEM
Pengaruh Tension Crack pada Stabilitas Lereng Limestone di Bali Selatan Basoka, I Wayan Ariyana; Hidayat, Muhammad Nurjati
Bulletin of Civil Engineering Vol. 6 No. 1 (2026): Februari
Publisher : Civil Engineering Department, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Wilayah Bali Selatan, khususnya Uluwatu, Pecatu, dan Nusa Dua, dikenal dengan tebing-tebing batu gamping yang indah namun rentan terhadap ketidakstabilan lereng. Salah satu pemicunya adalah terbentuknya tension crack di bagian puncak tebing, yang meskipun sulit diamati, memiliki pengaruh besar terhadap penurunan faktor keamanan, terutama saat air hujan mengisi retakan tersebut. Penelitian ini menganalisis pengaruh variasi kedalaman tension crack terhadap stabilitas lereng batu gamping menggunakan pemodelan numerik berbasis metode keseimbangan batas. Hasil analisis menunjukkan bahwa semakin dalam retakan, semakin rendah nilai faktor keamanan lereng. Pada kondisi kering, faktor keamanan menurun dari 1,471 (tanpa crack) menjadi 1,307 pada kedalaman retakan 5 m. Kondisi menjadi jauh lebih kritis ketika tension crack terisi air. Pada kedalaman 3 m, faktor keamanan turun hingga 0,921, dan pada kedalaman 4–5 m nilai FS berada pada kondisi sangat kritis (FS < 0,30). Hal ini menegaskan bahwa infiltrasi air ke dalam retakan memperburuk kestabilan lereng secara signifikan. Dengan demikian, kedalaman retakan dan keberadaan air merupakan parameter utama yang mengontrol potensi longsor pada tebing batu gamping di Bali Selatan, terutama pada musim penghujan.   The southern region of Bali, particularly Uluwatu, Pecatu, and Nusa Dua, is known for its beautiful limestone cliffs that are, however, prone to slope instability. One of the contributing factors is the formation of tension cracks at the cliff crest, which, although difficult to observe, greatly influence the reduction of slope safety, especially when rainfall infiltrates and fills these cracks. This study analyzes the effect of varying tension crack depths on the stability of limestone slopes using numerical modeling based on the Limit Equilibrium Method. The results indicate that deeper cracks correspond to lower slope safety factors. Under dry conditions, the safety factor decreases from 1.471 (without crack) to 1.307 at a crack depth of 5 m. The condition becomes much more critical when the tension crack is filled with water. At a depth of 3 m, the safety factor drops to 0.921, and at 4–5 m the FS reaches a very critical level (FS < 0.30). These findings demonstrate that water infiltration into the crack significantly worsens slope stability. Therefore, crack depth and the presence of water are the main controlling parameters for landslide potential along the limestone cliffs of South Bali, particularly during the rainy season.
Co-Authors Evi Nur Cahya I Wayan Ariyana Basoka Runi Asmaranto Sholawatini, Nur Suryono, Antonius Very Dermawan