Article Per Year (5 Year)
p-Index From 2019 - 2024
1.116
P-Index
This Author published in this journals
All Journal Journal of Geoscience, Engineering, Environment, and Technology Jurnal Ilmiah Rekayasa Sipil Jurnal Pembangunan Nagari Jurnal Civronlit Unbari Journal of Applied Agricultural Science and Technology
Junaidi, Junaidi
Universitas Andalas
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Physics Public Health Transportation

Published : 7 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 7 Documents
Search

 1 
Analysis of Land Cover Changing and Vegetation Index at Kuranji Watershed in Padang, West Sumatera, Indonesia Rifky Putera; Junaidi Junaidi; Ahmad Junaidi
Journal of Geoscience, Engineering, Environment, and Technology Vol. 4 No. 4 (2019): JGEET Vol 04 No 04: December 2019
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2118.65 KB) | DOI: 10.25299/jgeet.2019.4.4.4101

Abstract

Various activities around Kuranji watershed included the land conversioncan be impacted to topographic condition and also contributed to altering the vegetation density. Remote sensing technology is an effective methodfor land cover mapping. The objectives of the present study were to analyze the changing of land cover and classifying the vegetation density index in the upstream Kuranji Watershed. This study was conducted at Kuranji Watershed in Padang, West Sumatera Province. Two Landsat images representing the changing of the watershed area during 2017 and 2018 as well as obtaining the classification of vegetation density during corresponding years.Landsat 8 OLI images were classified using a supervised classification technique, then computed the vegetation index using the Normalized Difference Vegetation Index (NDVI). The result showed that the extension of forest area, settlement area and paddy field (283.92; 35.06; and 27 Ha, respectively) and decline of mix dryland agriculture, shrub and garden area (93.68; 277.43; and 190.95 Ha respectively). Decreasing of dense vegetation found at lower dense class (6.47 Ha) and highest dense class (5535.35 Ha). Therefore, the increasing area found at the cloud, dense and higher dense class (93.17; 5525.1; and 109.94 Ha, respectively). So, it is highlighted that changing land cover and vegetation index happen during the only one-year period.
Pengaruh Pertemuan Dua Sungai Batang Pasaman dan Batang Kenaikan Terhadap Banjir di Daerah Muara Kiawai Kabupaten Pasaman Barat Chairul Nurman; Junaidi Junaidi; Ahmad Junaidi
Jurnal Pembangunan Nagari Vol 3 No 2 (2018)
Publisher : Badan Penelitian and Pengembangan (Balitbang), Padang, West Sumatra, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (591.047 KB) | DOI: 10.30559/jpn.v3i2.108

Abstract

This study examines the effect of crossing between both discharge capacity of rivers, names discharge capacity of batang pasaman river and batang kenaikan river against water level of flood that occur at muara kiawai Area in Pasaman Barat District. Discharge capacity of Rivers are simulated by using software HEC-RAS 4.1. River data using in this study is that cliffside study data on batang pasaman at Dinas PSDA West Sumatera in year 2011 those are both data of river geometry and discharge capacity of river by using the nakayatshu method with return period of flood plan of 2, 5, 10, 25, 50 and 100 yearly. Maximum High flood at scenario 1 with existing condition that involves river section of Batang Kenaikan and Batang Pasaman at upstream and downstream resulted discharge capacity of flood plan Q 2 yearly 3.097m, Q 5 yearly 3.627m, Q 10 yearly 3.937m, Q 25 yearly 4.247m, Q 50 yearly 4.457m and Q 100 yearly 4.647m. Maximum Height of flood at scenario 2 with condition that only involves river section on Upstream and downstream of Batang Pasaman without river section of Batang Kenaikan resulted discharge capacity of flood plan Q 2 yearly 5.607m, Q 5 yearly 5.977m, Q 10 yearly 6.177m, Q 25 yearly 6.377m, Q 50 yearly 6.517m and Q 100 yearly 6,657m. Maximum height of flood at scenario 3 with condition that involves river section of Batang Kenaikan and Batang Pasaman at downstream without river section of Batang Pasaman at Upstream resulted discharge capacity of flood plan Q 2 yearly 3.097m, Q 5 yearly 3.627m, Q 10 yearly 3.937m, Q 25 yearly 4.247m, Q 50 yearly 4.457m and Q 100 yearly 4.457m. After the maximum water level of flood is obtained, it is seen that the flood happened at the crossing between of both rivers of Batang Pasaman and Batang Kenaikan at Muara Kiawai Area in Pasaman Barat District is dominated by river flow of Batang Kenaikan.
Simulasi Dengan Program EPA SWMM Versi 5.1 Untuk Mengendalikan Banjir pada Jaringan Drainase Kawasan Jati Yolla Fransiska; Junaidi Junaidi; Bambang Istijono
Jurnal Civronlit Unbari Vol 5, No 1 (2020): April
Publisher : Universitas Batanghari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/civronlit.v5i1.56

Abstract

Salah satu wilayah di Kota Padang yang dilanda banjir adalah kawasan Jati Kota Padang. Berdasarkan data banjir 22 Maret 2016, indikasi permasalahan yang ada di kawasan Jati yaitu kurangnya kapasitas saluran drainase. Tujuan dari penelitian ini adalah untuk mensimulasikan kemampuan Jaringan Drainase Kawasan Jati dengan menggunakan program EPA SWMM versi 5.1 dan menentukan alternatif penanganan masalah banjir yang tepat di kawasan tersebut. Model EPA SWMM 5.1 ini mampu  menghitung kuantitas dan kualitas limpasan permukaan dari setiap daerah tangkapan hujan, debit aliran, kedalaman aliran, dan kualitas air di setiap pipa dan saluran selama periode simulasi. Data-data yang digunakan pada penelitian ini adalah peta tata guna lahan untuk penentuan persentase impervious area, data hujan dan data dimensi saluran drainase pada kawasan Jati. Seri data hujan yang digunakan merupakan data hujan jam-jaman, karena tidak adanya data hujan jam-jaman pada stasiun hujan di lokasi penelitian, maka penentuan distribusi hujan jam-jaman dilakukan dengan mengubah lengkung Intensitas-Durasi-Frekuensi (IDF) untuk periode ulang 5 tahun menjadi Hyetograph hujan rencana dengan menggunakan Alternating Block Method (ABM). Setelah semua parameter input EPA SWMM 5.1 ditentukan dan diinputkan, simulasi dapat dilakukan. Simulasi yang dilakukan untuk mengatasi banjir di kawasan ini yaitu dengan 3 (tiga) skenario yaitu dengan mengubah dimensi saluran, perencanaan sumur resapan, dan mengubah arah aliran ke kanal banjir Jati. Dari 3 skenario simulasi yang dilakukan masih terdapat saluran yang meluap, tetapi dari 3 skenario ini, skenario yang lebih berpengaruh dalam mengatasi banjir di kawasan Jati adalah skenario 3.
Analisa Perubahan Garis Pantai di Wilayah Pantai Antara Muara Batang Air Dingin dan Muara Batang Anai Provinsi Sumatera Barat Boy Setiawan; Junaidi Junaidi; Ahmad Junaidi
Jurnal Civronlit Unbari Vol 5, No 1 (2020): April
Publisher : Universitas Batanghari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/civronlit.v5i1.61

Abstract

Garis pantai antara Muara Batang Air Dingin dengan Muara Batang Anai terletak sebagian di kota padang dan sebagian di Kabupaten Padang Pariaman, Propinsi Sumatera Barat. Sebelum tahun 2012 terjadi abrasi, hempasan ombak pada saat terjadi badai, dapat mencapai rumah-rumah penduduk. Pada tahun 2012, Balai Wilayah Sungai Sumatera V (BWSS V) dan Dinas Pengelolaan Sumber Daya Air (PSDA) Propinsi Sumatera Barat membangun groin untuk menanggulangi abrasi. Untuk mengetahui dampak dibangun groin ini, penulis tertarik untuk meneliti dan menganalisa perubahan garis pantai di wilayah pantai antara muara Batang Air Dingin dan muara Batang Anai. Tujuan utama dari penelitian ini adalah mengetahui posisi akresi dan abrasi sepanjang garis pantai di tempat penelitian serta membuat simulasi arah gelombang  sehingga dapat diketahui arah laju partikel (sedimen) akibat adanya bangunan  pengaman pantai. Untuk membuat simulasi perubahan garis pantai, penulis menggunakan software GENESIS. Dari penelitian ini diketahui bahwa pada lokasi yang telah dibangun groin, terjadi akresi di sepanjang lokasi pantai tempat penelitian. Pertambahan garis pantai mencapai 25 m dan laju akresi mencapai 4,2 meter/tahun. Pada daerah yang belum dibangun groin, terjadi abrasi akibat pengaruh berkurangnya pasokan sedimen karena telah ditangkap oleh groin yang berada pada sisi kirinya. Laju abrasi pertahun adalah 1,2 m/thn yang berada di lokasi pasie jambak Kota Padang. Berdasarkan simulasi Genesis 10 tahun kedepan dari tahun 2017.  Terjadi pergerakan sedimen yang bergerak dari kiri kekanan saat pengamat menghadap kelaut. Pemasangan groin yang efektif dalam memajukan garis pantai, namun berdampak negatif pada daerah yang belum dibangun groin seperti mundurnya garis pantai akibat berkurangnya pasokan sedimen.
Photogrammetry Technology by Using DJI Phantom 4 RTK in Batang Mahat, Lima Puluh Kota Regency West Sumatera Junaidi Junaidi; Diva Syandriaji
Jurnal Ilmiah Rekayasa Sipil Vol 20 No 1 (2023): April 2023
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v20i1.1055

Abstract

Technological developments in the field of engineering have increased rapidly. The use of geospatial information becomes one of the bases for decision-making related to planning, managing, and evaluating a field, especially in engineering, which includes the field of measurement and making topographic maps or Digital Elevation Model (DEM). High-resolution geospatial information can create a high-resolution Digital Elevation Model (DEM) map that can be very useful in making models or maps of flood-affected areas. This research will use the photogrammetry technology with DJI Phantom 4 RTK to create the DEM data of Batang Mahat located in Lima Puluh Kota Regency, West Sumatra Province. 28 flights at predetermined points had carried out to measure the area of about 9 km2. All the results of photos captured by the drone will be imported to Agisoft Metashape 1.8.2 software to create the DEM data. The DEM was then compared with DEM data from DEMNAS and the measurement data of Batang Mahat by the SDABK office. The result shows that photogrammetry technology using DJI Phantom 4 RTK compared to measurement data and DEMNAS have a similar ground elevation but different river elevation. This is because the photogrammetry by using DJI Phantom 4 RTK is not equipped with LiDAR. An alternative to solve the problem is by combining the DEM data by DJI Phantom 4 RTK with data from terrestrial surveys. However, this method is quite expensive and ineffective in analyzing flood inundation compared to DEM data (8 m resolution) from DEMNAS.
Prediction of Streamflow of the Anai-Weir Catchment Using Both the SWAT and Mock Models Mas Mera; Siti Hawa Binti Yusmardi; Junaidi Junaidi
Journal of Applied Agricultural Science and Technology Vol. 7 No. 2 (2023): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v7i2.96

Abstract

This research focuses on predicting the streamflow of the Anai-weir catchment using the SWAT (Soil and Water Assessment Tools) and Mock models. The catchment studied is approximately 34,024 ha wide. The rainfall and climatological data were collected from the three nearest rainfall stations, namely Kandang IV (13.8 km far), Kasang (15.2 km far), and Sicincin Stations (11.2 km far), from 2010 to 2019. The first research methodology is to delineate the catchment, form a Hydrologic Response Unit (HRU), and then enter the climatological data into the SWAT model to estimate the daily streamflow. This daily streamflow is then averaged over a semi-monthly period. The second research methodology is to estimate an evapotranspiration depth based on the climatological data using the Modified Penman method, and then predict the semi-monthly average-daily streamflow using the Mock model. The results obtained from both methods are then compared with the Anai-weir AWLR-data. The average results from each method, namely, the SWAT model, the Mock model, and the AWLR data have the same tendency, but the Mock model results are closer than the SWAT model results to the AWLR data. This indicates that the Mock model is more suitable than the SWAT model for the existing data conditions. Even though the SWAT model considers more variables than the Mock model does.
Study on The Causes of Flooding in Batang Mahat, Lima Puluh Kota Regency, West Sumatera Junaidi Junaidi; Darwizal Daoed; Diva Syandriaji
Journal of Applied Agricultural Science and Technology Vol. 7 No. 2 (2023): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v7i2.161

Abstract

This research is located in Batang Mahat Lima Puluh Kota Regency, about 9.26 km2 from the narrowing location at Batu Kisok to the upstream, prone to flood. Due to several flooding events in Batang Mahat, various assumptions and hypotheses have emerged regarding the causes of Batang Mahat flooding. This research analyses the causes of flooding in Batang Mahat using Steady Flow simulation in HEC-RAS 6.2 software. The result implies that two factors caused the flood: (1) The channel capacity is insufficient to accommodate flood water discharge, where the simulation results shown at the Q50 discharge (2003.07 m3/s) flood inundated several areas in cross-sections upstream and tributary. (2) The impact of the narrowing location at the river channel in Batu Kisok, which is shown by the simulation of a decrease in water elevation at eight cross-sections at the upstream and two cross-sections at the tributary after the cross-sections in Batu Kisok are widened from ±30 m to ±45 m (50%), ±60 m (100%), and ±75 m (150%).
Co-Authors Ahmad Junaidi Anak Agung Ketut Sudharmawan Bambang Istijono, Bambang Boy Setiawan Darwizal Daoed Diva Syandriaji Diva Syandriaji Mas Mera Rifky Putera Siti Hawa Binti Yusmardi Yolla Fransiska