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Ghozali Mahmud
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PEMODELAN PEMASANGAN PENYANGGA SEMENTARA MENGGUNAKAN PERANGKAT LUNAK PHASE 2 PADA HEADRACE TUNNEL CHAINAGE 45 M – 155 M DI PLTA TULIS KABUPATEN BANJARNEGARA, JAWA TENGAH Mahmud, Ghozali
Geological Engineering E-Journal Vol 5, No 1 (2013): Volume 5, Nomor 1, Tahun 2013
Publisher : Geological Engineering E-Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1922.293 KB)

Abstract

In the process of tunnel construction, the support design process is a very important thing to do. This process must be done carefully and thoroughly in order to obtain cost efficiencies expenditureon the tunnel project. Because the total expenditure in the construction of a tunnel is not cheap. This support planning process itself is divided into two namely the planning of temporary andpermanent support. The support planning usually is done before and the time of tunnelconstruction. This research aims to model the geological conditions around the tunnel, the tunnel pit conditions before supporting system installed, and the temporary support design of theheadrace tunnel of Tulis Hydropower Banjarnegara Residence, Central Java Province. So we willknow types of the most appropriate support based on physical properties, rock mechanics and rock mass behavior along the tunnel. The research method used is descriptive and experimentalmethods. By way of temporary support modelling in headrace tunnel with Phase2 software . In thisresearch will analyze and make temporary support models of 45 m – 155 m chainage the headrace tunnel. In the chainage will be made 3 models (II b, III a, and III b) based on rock mass ratingvalue Based on the modelling results it is known that for class II b has a total displacement of < 5mm. So the installation of supports on class II b is relatively stable and secure there will be no collapse of the tunnel. As well as combinations obtained temporary support is most effective with atotal value that is the smallest displacementnya shotcrete 1 variations is 50 mm; 3 m long of rockbolts with spaced 2 m and 10 of its number ; shotcrete 2 variations 100 mm. Whereass the rock mass class III A and III B have > 5 mm in the result of total displacement. So the tunnel is will notstable and secure with a variety of shotcrete and rock bolts that has been done. It would requirethe addition of another temporary support variant form of steel set as installation instructions and supporting the tunnel excavation (After Bieniawski, 1989).
Sistem Perpustakaan Menggunakan QR Code Berbasis Web Dengan Framework Codeigniter Adhiwibowo, Whisnumurti; Mahmud, Ghozali
Information Science and Library Vol. 2 No. 1 (2021): Juni
Publisher : UPT Perpustakaan Universitas Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26623/jisl.v2i1.3424

Abstract

Perpustakaan SD Negeri Muktiharjo Lor merupakan lembaga pendidikan yang memiliki kumpulan bahan pustaka yang lengkap. Dari koleksi buku pelajaran maupun kumpulan buku-buku umum di sediakan kepada para pengunjung perpustakaan. Dalam proses kerjanya yaitu proses simpan pinjam bahan pustaka masih dilakukan secara manual tanpa memanfaatkan sebuah sistem informasi guna meningkatkan kinerja layanan para pustakawan atau pengelola. Kondisi tersebut menjadi dasar dalam merancang bangun sistem perpustakaan menggunakan QR Code Berbasis Web dengan Framework Codeigniter. Metode Waterfall digunakan dalam membuat pengembangan sistem, codeigniter digunakan dalam pembuatan framework, dan MySQL digunakan untuk menyimpanan database. Sistem yang dibangun di SD Negeri Muktiharjo Lor mampu dalam meningkatkan kinerja layanan perpustakaan baik dalam keefesien, keefektifan dan dapat mengurangi kesalahan-kesalahan dalam mengolah bahan pustaka karena menggunakan QR Code.The SD Negeri Muktiharjo Lor library is an educational institution that has a complete collection of library materials. From the collection of textbooks and a collection of general books provided to library visitors. In the work process, the process of saving and borrowing library materials is still done manually without using an information system to improve the service performance of librarians or managers. This condition is the basis for designing a library system using a Web-based QR Code with Codeigniter Framework. The Waterfall method is used in making system development, Codeigniter is used in making the framework, and MySQL is used for storing databases. The system built at SD Negeri Muktiharjo Lor can improve the performance of library services both in efficiency, effectiveness and can reduce errors in processing library materials because it uses QR Code.Keywords:  QR Code; Muktiharjo Lor Elementary School; Library
Co-Authors Whisnumurti Adhiwibowo