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The Study Of Utilization Of Steel Slag To Sabodam Jati Iswardoyo
JURNAL TEKNIK HIDRAULIK Vol 7, No 2 (2016): JURNAL TEKNIK HIDRAULIK
Publisher : Pusat Litbang Sumber Daya Air, Kementerian Pekerjaan Umum dan Perumahan Rakyat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1386.37 KB) | DOI: 10.32679/jth.v7i2.564

Abstract

Steel slag is one of the results of the rest of smelting iron ore/ steel. To reduce the abundance of steel slag, this study seeks to examine utilization as a substitute for gravel in the concrete used for construction sabodam.The durability of concrete on the outer layer was analyzed by using the results of several studies related.The most influential factor is the compressive strength of bump (impact) as a representation of the clash due to lava rock.It will be discussed about the potential use and durability. To analyze the stability of the sabodam, researcher use SNI 2851: 2015 about Sediment Retention Building Design. The parameter used is the stability of the tilting, sliding and bearing capacity. For alternative use sabodams core material, researcher used split stones and steel slagconcrete. The flood scenarios can be divided into two, namely flood plain and flood lava. Based on the results obtained, the potential for instability is found in the parameters of carrying capacity. Thesabodamwhich using split stones, the bearing capacity of the land has a minimum strength is worth -0.98 kN/m2 (for flood) and -0.43 kN/m2 (for lava flood), while sabodam with steel slag has a minimum strength of 1.74 kN/m2 (for flood) and 1.57kN/m2 (for lava flood) which means notensile stresses occured. The conclusion is the concrete with steel slag can be used as material for sabodam.
BANJIR BANDANG DI ALASMALANG BANYUWANGI DAN ALTERNATIF PENANGANANNYA (Flash flood at Alasmalang Banyuwangi and alternatives for its completion) Rokhmat Hidayat; Jati Iswardoyo
Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Management Research) Vol 3, No 2 (2019): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Managem
Publisher : Center for Implementation of Standards for Environmental and Forestry Instruments Solo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (942.901 KB) | DOI: 10.20886/jppdas.2019.3.2.127-140

Abstract

ABSTRACTFlash floods frequently occur in Indonesia. Flash flood can be caused by natural and human factors. This paper discusses the causes and mitigation of flash flood using a case study in Banyuwangi. On June 22th 2018, flash floods occurred in the residential areas of Garit, Karang Asem, and Bangunrejo Hamlets. Flash floods were triggered by heavy rainfall the day before, which reached 90 mm/day. The three hamlets are located in Alasmalang Village, Singojuruh Subdistrict, Banyuwangi District. The study began with a field survey, analysis of the damage, and the causes of a flash flood, and its alternative treatments. The suspected source of the material was the landslide material, approximately two million cubic meters from the Pendil Mountain. Some of the material were carried away by the river flooding caused flash floods in the three hamlets. The small width of the bridge was not able to be passed by trees and other flash flood material, so water overflowed the roads and houses. Based on the results of the study, it is recommended for disaster mitigation in the form of structural and non-structural actions. Structural measure in the form of bridge elevation and construction of sediment retaining weirs, while non-structural actions are in the form of an early warning system and dissemination of flash flood hazards.Keywords: Flash flood; landslide; structural treatments; non-structural treatments ABSTRAKBanjir bandang sering terjadi di Indonesia. Banjir bandang dapat disebabkan oleh faktor alami maupun manusia. Makalah ini membahas tentang penyebab dan mitigasi banjir bandang dengan studi kasus di Banyuwangi. Pada 22 Juni 2018 banjir bandang melanda kawasan permukiman di Dusun Garit, Karang Asem, dan Bangunrejo. Banjir bandang dipicu hujan lebat sehari sebelumnya mencapai 90 mm/ hari. Tiga dusun itu berada di Desa Alasmalang, Kecamatan Singojuruh, Banyuwangi. Penelitian diawali dengan survei lapangan, analisis kondisi kerusakan akibat banjir bandang, penyebab banjir bandang, serta alternatif penanganannya. Sumber material diduga berupa material longsor sekitar dua juta meter kubik dari Gunung Pendil. Sebagian material ini terbawa banjir sungai sehingga menyebabkan banjir bandang di tiga dusun tersebut. Kondisi lebar jembatan yang kecil tidak mampu dilalui oleh pepohonan dan material banjir lain, sehingga banjir meluap menggenangi jalan dan rumah warga. Berdasarkan hasil kajian maka direkomendasikan untuk penanggulangan dan mitigasi bencana berupa tindakan struktural dan tindakan non struktural. Tindakan struktural berupa peninggian jembatan dan pembangunan bending penahan sedimen, sedangkan tindakan nonstruktural berupa sistem peringatan dini dan sosialisasi bahaya banjir bandang.Kata kunci: Banjir Bandang; longsor; penanganan struktural; penanganan non-struktural