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I Dewa Gede Jaya Negara
Jurusan Teknik Sipil, Fakulas Teknik, Universitas Mataram, Mataram Jalan Majapahit, No 62, Kota Mataram, Provinsi NTB, 83115
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PENGARUH PENEMPATAN BENDUNG DI HILIR BELOKAN SUNGAI TERHADAP PEMBENTUKAN KONFIGURASI DASAR DAN SEDIMEN TERANGKUT NEGARA, I DEWA GEDE JAYA; PUTRA, IDA BAGUS GIRI; YASA, I WAYAN; DEWI, KURNIA
GANEC SWARA Vol 14, No 2 (2020): September 2020
Publisher : Universitas Mahasaraswati Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v14i2.148

Abstract

Weir is one of the water buildings built across the river. Weirs are needed to elevate the river water level so that it meets the elevation of irrigation needs. In very diverse watershed conditions, it is very possible that a dam was built in a river channel that is not ideal because the river channel turns so that the building becomes less safe. To be able to know the safety of the weir from erosion that can cause the weir to collapse and break or overturn, it is necessary to conduct an experimental laboratory research on the position of the weir in the downstream of a river bend. Research related to its effect on sediment transport, especially in the formation of basic configurations needs to be known, because erosion at the bottom is the initial process of weakening the weir security. This research was conducted in the Hydraulics and Coastal Laboratory of FT. The irram in a river flume with a length of 8 m and a width of 50 cm. Weir test is carried out with 4 variations of discharge and 3 variations of the position of the weir downstream of the channel bends. Sedimentation data were analyzed by the methods of Mayer, Peter, Muler (M.P.M), Einstein and Shinohara-Tsubaki and topographic data analysis using the Surfer program. The results showed that in general the largest sediment transport occurred in the position of weir I at a distance of ½ channel width downstream of the center of the channel bends for all tests, with the magnitude of sediment transport occurring from the MPM method Qs = 1x10-4 m3 / dt / m, Einstein Qs = 6,371x10-6 m3 / sec / m, and Shinohara-Tsubaki Qs = 1,7951x10-4 m3 / sec / m. More dominant scouring occurs at the foot of the weir downstream, with the basic configuration formed in the form of antidunes and standing waves, and based on the Froude (Fr) flow rate including subcritical flow (Lower Flow Regime) with the basic configuration form of ripples and dunes
KARAKTERISTIK LAJU RESAPAN LUBANG BIOPORI PADA BEBERAPA JENIS SAMPAH ORGANIK NEGARA, I DEWA GEDE JAYA; SETIAWAN, AGUSTONO; SAIDA, HUMAIRO; GUNAWAN, ADRI
GANEC SWARA Vol 15, No 1 (2021): Maret 2021
Publisher : Universitas Mahasaraswati Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v15i1.204

Abstract

      Many efforts have been made by various parties in overcoming the problem of waste and flooding, in residential areas that are starting to develop, one of which is by utilizing organic waste as a biopore filler to improve soil absorption and produce compost. The biopore infiltration hole technology can utilize organic waste to fill biopore media, which is used as a food source by biota in the soil layer. This study aims to determine the rate of biopore infiltration in the use of several types of organic waste such as (1) straw, (2) leaves and (3) household waste. Biopori is made from pipapvc 4 ”and 1 m in length with installation into the ground 80 cm and the rest above the soil surface 20 cm for testing purposes with a total of 12 test points and tested after 7 days to 21 days. For biopore holes without filler, the highest absorption rate was 85 cm / hour and the lowest was 42,167 cm / hour. The type of straw waste obtained infiltration rate of 179.34 cm / hour and the lowest infiltration rate of 86,770 cm / hour, with an average of 113.56 cm / hour. In the filler with leaf litter, the highest infiltration rate was 100,111 cm / hour and the lowest was 59,743 cm / hour, with an average value of 84.69 cm / hour. Whereas for household waste, the lowest absorption rate was 38 cm / hour and the highest was 100,111 cm / hour, and the average was 52,979 cm / hour. At the age of 7 days the waste has the highest absorption rate and after the waste is 21 days old it should be replaced with a new one.
Karakteristik Infiltrasi dan Potensi Irigasi di Lahan Kering Kecamatan Bayan Kabupaten Lombok Utara I Dewa Gede Jaya Negara; Lilik Hanifah; Humairoh Saidah; Saiful Anwar
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 7 No. 1 (2021): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v7i1.239

Abstract

Agricultural development with horticultural crops on dry land is one of the government's efforts to increase dry land productivity so that new paddy fields are created in the Bayan area. Noting that land infiltration capability and its classification are important factors needed in irrigation planning to support the development of horticultural agriculture, so it is necessary to conduct field research on this matter. This study aims to determine the characteristics and classification of land infiltration and determine the trend of irrigation that can be applied. Field infiltration tests were carried out in Anyar and Sukadana villages with 4 test points each. The infiltration rate test in the field was carried out using a double ring infiltrometer and a soil test at the Geotechnical Laboratory, Faculty of Engineering, Unram. Analysis of the data used Horton's formula as a comparison and the results of the analysis were presented in the form of tables and graphs, conclusions were made descriptively. The results showed that the average infiltration rate in Anyar Village was at point 1 = 26.90 cm/hour, point 2 = 14.94 cm/hour, point 3 = 27.33 cm/hour, and point 4 = 8.21 cm/hour with soil including sandy clay. Infiltration rate classification of points 1 and 3 is very fast, point 2 is fast and location 4 is rather fast. For Sukadana Village the infiltration rate was obtained at point 1 = 43.52 cm/hour, point 2 = 36.67 cm/hour, point 3 = 12.86 cm/hour, and point 4 = 10.97 cm/hour, with the condition sandy clay soil. Sukadana's infiltration rate classification points 1 and 2 are very fast and points 3 and 4 are rather fast. Based on the results of the infiltration test, for very fast and fast infiltration, it is potential to apply jet irrigation such as sprinklers or perforations and for rather fast infiltration, drip irrigation can be applied with limited drip system
Analisisis Kinerja Sprinkler Mini Meganet 24 D Netafim Terhadap Variasi Debit dan Jarak Penempatan Sprinkler I Dewa Gede Jaya Negara; Ida Bagus Giri Putra; Anid Supriadi; Made Anggitha Dewi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN 2021: Special Issue, Oktober 2021
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v0i0.253

Abstract

Currently, there are many efficient and effective sprinkler irrigation tools on the market, so it is necessary to be careful in choosing for irrigation. Among them, the Meganet 24D Netafim, including the type of irrigation tool, which still needs testing to know its performance. This study aims to examine the sprinkler irrigation performance of Meganet 24D Netafim, on variations in flow rate and distance between sprinklers, related to irrigation uniformity (CU) and irrigation radius (Rn). This test was carried out on an area of about 1 acre, at a flow rate of Q1=0.42/sec, Q2=0.51 l/sec, Q3=0.52/sec, Q4=0.56 and the test sprinkler distance, r1=2 ,5m, r2=3m,r3 = 3.5m and r4 = 4m. The results of data analysis are presented in the form of tables and graphs and concluded descriptively. The results showed that, in all variations of Q and sprinkler spacing r1, r2, r3 obtained irrigation uniformity (CU) above 85% which was classified as high, while in the r4, Q1 and Q2 tests, CU was obtained below 85% which was considered low. All discharge variations, showing irrigation radius (R) about 5 m. So at r4 sprinkler spacing, it is not recommended in irrigation applications.
Penyuluhan dan Pelatihan Tentang Pembuatan Sistem Irigasi Lep Pipa Pada Jaringan Irigasi Air Tanah Dalam Di Dusun Arungan Bali Desa Akar Akar Kabupaten Lombok Utara I Dewa Gede Jaya Negara; Anid Supriyadi; Atas Pracoyo
Jurnal Gema Ngabdi Vol. 2 No. 2 (2020): Jurnal Gema Ngabdi
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jgn.v2i2.94

Abstract

At present in the dry land of Akar Akar Village, the government has built no less than 22 ground water pumping wells since 1990. on the land. Arungan Bali as one of the locations of dry land with potential land that is pivot and sandy, 6 hours to 8 hours per hectare of land. The irrigation period is long and very wasteful of ground water, requiring very expensive costs. To overcome this, it is necessary to develop a network of existing JIAT with a lep pipe system to improve irrigation in land plots. Based on the results of field tests the pipe lep irrigation system can provide land faster than the existing JIAT system. For that, the pipe-pipe irrigation network needs to be restored to the farming community and given training, so that the plantation method is easy for the community to imitate. This dedication is carried out by extension methods and training in making pipeline irrigation in dry land. In counseling discussions and questions and answers, while in the training carried out the manufacture of irrigation networks in plots of land. The results of this dedication show that, the Arungan Bali farmer community has gained knowledge about plantations and can create a pipe irrigation network in a plot of land. The community can make a land network because an example already exists in the land around the residents' land. 30% of the ways that already exist.
Evaluasi Penentuan Kawasan Lindung Kota Mataram dalam Perannya Sebagai Kawasan Peresapan Air Humairo Saidah; Bambang Hariyanto; Anid Supriyadi; I Dewa Gede Jaya Negara
SADE : Jurnal Arsitektur, Planologi dan Teknik Sipil Vol 1 No 1 (2021): SADE April 2021
Publisher : Program Studi Arsitektur Fakultas Teknik Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (590.437 KB) | DOI: 10.29303/sade.v1i1.2

Abstract

Kawasan lindung kota adalah Kawasan yang berfungsi melindungi kelestarian lingkungan hidup dan sumber daya di dalamnya. Pemerintah Kota Mataram telah menetapkan tiga kelurahan yakni Selagalas, Pagutan Timur dan Sayang-sayang sebagai kawasan lindung Kota Mataram. Penelitian ini melakukan pengujian terhadap kemampuan resapan ketiga kawasan lindung tersebut untuk mengukur kinerja ketiganya dalam menjaga tata air sekaligus mencegah kerusakan lingkungan akibat peristiwa alam di wilayah Kota Mataram. Penelitian dilakukan dengan mengukur kemampuan penyerapan air (infiltrasi) di ketiga kelurahan tersebut menggunakan double ring infiltrometer serta menguji sifat fisik tanah di laboratorium. Hasil yang diperoleh adalah bahwa kapasitas infiltrasi kelurahan Selagalas, Pagutan Timur dan sayang-sayang berturut-turut adalah 2.8cm/jam, 2.2cm/jam dan 1.8 cm/jam, dengan jenis tanah yang hampir sama yaitu lempung berpasir. Berdasarkan angka laju resapan menunjukkan bahwa laju penyerapan Pagutan Timur dan Selagalas masuk kategori sedang dan Sayang sayang berkategori sedang lambat. Dengan curah hujan rerata harian antara 12-43 mm/hari, maka potensi penyerapan air rerata dari ketiga lokasi adalah 124.936 m3/tahun untuk Kelurahan Pagutan Timur, Kelurahan Selagalas 284.963 m3/tahun dan Sayang sayang 165.311 m3/tahun. Namun angka potensi ini masih memerlukan penyesuaian mengingat ketiga kelurahan tersebut sudah banyak beralih fungsi menjadi pemukiman
ANALISIS KARAKTERISTIK KEDALAMAN HUJAN DAN IKLIM DI PULAU LOMBOK I WAYAN YASA; YUSRON SAADI; HERI SULISTYONO; ERY SETIAWAN; HARTANA HARTANA; I DEWA GEDE JAYA NEGARA
GANEC SWARA Vol 15, No 2 (2021): September 2021
Publisher : Universitas Mahasaraswati K. Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35327/gara.v15i2.219

Abstract

Climate and rain parameters are important factors that affect the availability of water resources on the earth's surface. The phenomenon of climate change that occurs today has an impact on the depth and distribution of rain and climatological parameters. The existence of rain and climate on Lombok Island changes very significantly every year. These changes affect various sectors, especially the irrigation sector. Thus, various adjustments must be made, such as adjusting the time of planting, cropping patterns and the types of plants being cultivated. In this case, knowledge about the characteristics of rain and climate that occurs on the island of Lombok is very important to know the pattern and magnitude of the incident as well as the time of the incident. This study was conducted to determine the condition of each climate variable in the Lombok island region by calculating the monthly average for 25 years. The smoothing uses the Theissen polygon method by utilizing 19 scattered rain station data and 4 climatological stations. Based on the analysis carried out, the results showed that the average monthly temperature ranged from 26.17-27.09°C, humidity 87.70-89.83%, sunlight 39.79-69.44%, and wind speed 53 ,73-110,21knot. The highest rainfall occurred in January of 235.33 mm, while the lowest occurred in August of 18.12 mm.
Variasi Penempatan Bronjong Di Hilir Kolam Olak Terhadap Pola Gerusan Dasar: Variations in the Placement of Gabions in the Downstream of the Pool Against Basic Scouring Pattern I Dewa Gede Jaya Negara; Salehudin Salehudin; Lilik Hanifah; I Wayan Yasa; Ni Putu Ira Sintia Kurnianti
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 8 No. 1 (2022): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v8i1.300

Abstract

The existence of a weir is often disrupted by the occurrence of scouring downstream, which results in an insecure weir position. This study aims to determine the effect of installation of gabion variations downstream of stilling ponds on the depth and length of scour at the bottom of the channel. The test was carried out at the Hydrology and Coastal Laboratory of FT Unram in a straight channel with dimensions of 7.5 m x 0.55 m x 0.5 m, with an Ogee type spillway and a USBR Type III stilling pond. The dimensions of the test gabions are 0.55 m x 0.18 m x 0.09 m with a gravel diameter of 1 (P1 ) 0.035 m, (P2 ) 0.0175 m and (P3 )0.00875 m, and the variation of discharge 1(Q1) 0.0019 m3/s, discharge 2(Q2) 0.0036 m3/s, discharge 3 (Q3) 0.0047 m3/s and discharge 4 (Q4) 0.0065 m3/s. The results showed that in conditions without gabions, scour was prone to occur near the end of the stilling pond to the center of the channel bottom and towards the right side of the channel, with a scour depth of 0.002m – 0.023m and a length of 0.075m – 0.45m. For conditions with gabions, the scour length ranges from 0.15m – 0.275m with a depth of 0.0016m – 0.026 m, the scour occurs more evenly to the left and right of the channel.  
Pendampingan Masyarakat Dalam Persiapan Pembangunan Bak Induk Penampung Air Tanah Untuk Pengembangan Irigasi Lahan Kering Di Kabupaten Lombok Utara I Dewa Gede Jaya Negara; Bambang Hari Kusumo; Kisman, Tajidan; Lolita Endang Susilawati; Bambang Budi Santoso; Joko Priyono
Jurnal Pengabdian Magister Pendidikan IPA Vol 5 No 2 (2022): April-Juni
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (580.155 KB) | DOI: 10.29303/jpmpi.v5i2.1731

Abstract

Dalam persiapan pembangunan bak Induk penampung air pompa di Sambik Rindang 1, diperlukan bangunan berupa lantai kerja karena bak air akan berada di lereng perbukitan dan rentan terhadap bahaya gempa. Dalam hal tersebut diperlukan pekerja seperti tukang yang memadai, dan perlu ada partisipasi masyarakat dalam pembangunan tersebut. Memperhatikan keterampilan warga yang ada sangat bermacam-jenisnya, maka pelibatan masyarakat perlu dilakukan secara selektif untuk menjamin hasil pekerjaan yang baik. Untuk itu pekerja yang dilibatkan perlu didampingi tim yang berpengalaman, agar hasil pembangunan memiliki kualitas dan kuantitas sesuai dengan yang diperlukan. Mengingat pentingnya terbangunnya bak air tersebut untuk menampung air dari air tanah, maka tim dari Unram dalam pengabdian ini perlu membantu kepentingan masyarakat tersebut. Pengabdian ini dilakukan dengan metode pendamping oleh Tim Unram, dengan tahapan kegiatan: survey awal dan koodinasi, kegiatan pendampingan dalam penentuan lokasi, pengukuran lokasi, pemasangan bawplang bak, penggalian dasar lantai kerja dan pembangunan lantai kerja. Diskusi dan tanya jawab dilakukan selama proses pembangunan, untuk meningkatkan wawasan para tukang dan pekerja dilokasi setempat.Hasil pengabdian warga telah berhasil membuat lantai kerja bak Induk sampai selesai, peserta telah mendapatkan pengetahuan pembanguan tambahan dari kegiatan ini. Dikusi dan tanya jawab telah menigkatkan pengetahuan Teknik banguan pada para tukang dan perkerja yang ada di Sambik Rindang 1tentang pentingnya keamanan bangunan yang dihasilkan, sehingga dapat digunakan sebagai bekal dalam pembangunan dimasa-masa mendatang. Semua yang terlibat harus memiliki tanggungjawabnya, agar bangunan yang dihasilkan dapat bermanfaat dengan baik. Dengan selesainya kegiatan pertemuan terpusat tersebut maka kegiatan ini sudah selesai, tim pengabdian mengucapkan terimakasih dan semoga amal ini memberi manfaat.
SOSIALISASI PENGEMBANGAN PERTANIAN LAHAN KERING DAN PEMANFAATAN AIR TANAH DALAM DI DESA SALUT KECAMATAN KAYANGAN, KABUPATEN LOMBOK UTARA I Dewa Gede Jaya Negara; Bambang Hari Kusumo; Kisman Kisman; Tajidan Tajidan; Lolita Endang Susilawati; Bambang Budi Santoso; Joko Priyono
Jurnal Abdi Insani Vol 9 No 2 (2022): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v9i2.575

Abstract

The potential for dry land in North Lombok is very wide with the surrounding rivers mostly dry during the dry season. Sambik Rindang Hamlet is one of the dry lands that has the potential for productive agriculture, but has not been able to be utilized optimally. For this reason, the people of Sambik Rindang need to be given knowledge about this through socialization, so that they can make efficient use of dry land and groundwater so that farming can be carried out outside the rainy season. The aim of the socialization is to increase people's knowledge about irrigation water efficiency and irrigation methods for agriculture in dry land. This socialization was carried out with the stages of field review, field socialization, discussion and question and answer, evaluation and closing. Furthermore, this socialization service has succeeded in providing knowledge about efficient irrigation such as drip irrigation and pipelines, with productive farming. The service participants were very enthusiastic about participating in the socialization activities, questions about agriculture and irrigation were answered well by the team from the Faculty of Agriculture and the Faculty of Engineering. Evaluation of activities is carried out by the service team, from the field socialization activities to the end of the activity. The service participants were very proactive during the activity and had knowledge about efficient irrigation and productive farming methods. Thus the service participants have known efficient irrigation methods and have gained knowledge in utilizing dry land in order to have an economic impact on the family.
Co-Authors , Kisman Abdi Fadillah Adhitya Halim .P Agastya, Dewandha Mas Agus Soroso Agus Suroso Agus Suroso Agus Suroso Agus Suroso Agus Suroso Agustono Setiawan Ainudin, Nurun Akbar, Tabrani Akmaludin Akmaludin, Akmaludin Anid Supriadi Anid Supriyadi Anid Supriyadi Anid Supriyadi ANID SUPRIYADI Anid Supriyadi ATAS PRACOYO Atas Pracoyo Bakti, Lalu Arifin Aria Bambang Budi Santoso Bambang Hari Kusumo Bambang Hariyanto Bambang Hariyanto Budianto, M Bagus BUDIANTO, M. BAGUS Budianto, Muh. Bagus Desi Widianty Desi Widiyanti Desi Widiyanti DEWANDHA MAS AGASTYA Dewandha Mas Agastya Dewi, Kurnia Didi Supriyadi Agustawijaya Didik Agusta Wijaya EKO PRADJOKO Eko Pradjoko Eniarti, Miko Ery Setiawan Ery setiawan ERY SETIAWAN Faeruzza Athiya Fera Fitri Salsabila GUNAWAN, ADRI Hartana Hartana HARTANA HARTANA Hartana, Hartana Hasim Hasyim Hasyim, Hasyim hasyim, hasyim Heri Sulistiyono Heri Sulistiyono Heri Sulistiyono Heri Sulistiyono Heri Sulistiyono, Heri HERI SULISTYONO Hidayat, Syamsul Hidayati, Nufalia Humairoh Saidah I B Giri Putra I Gusti Made Kusnarta I Kade Wiratama I Nyoman Merdana I W Sugiartha I Wayan Joniarta I Wayan Suteja I Wayan Yasa I Wayan Yasa I Wayan Yasa I Wayan Yasa, I Wayan IAO Suwati Sideman Ida Ayu Oka Suwati Sideman Ida Bagus Giri Putra IDewa MadeAlitKaryawan Isnaniar Isnaniar Rahmatul Azizah IWayan Suteja Joko Priyono Julio, Ryan Bagus Jurnal Pepadu Karyawan, Dewa Made Alit Karyawan, I Dewa Made Alit Kisman Kusuma, Lalu Dea Maulana Diendy Lalu Arifin Aria Bakti Lalu Wirahman Wiradarma Lilik Hanifah Lilik Hanifah Lolita Endang Susilowati Luvitasyari, Tirta Intan M Bagus Budianto M R. Sepriadi Made Anggitha Dewi Made Mahendra Made Mahendra MadeMahendra Mahendra, Made Merdana, I Nyoman Miko Eniarti Muh Bagus Budianto Muhajirah Ngudiono Ngudiono Ni Luh Ayu Aprilianti Ni Putu Ira Sintia Kurnianti Nufalia Hidayati Nur Chayati Nurrachman Pathurahman PRACOYO, ATAS Purwangsa, Herdi PUTRA, IDA BAGUS GIRI Ratna Yuniarti Ratna Yuniarti Ratna Yuniarti Rohani Rohani Rohani SAIDA, HUMAIRO Saiful Anwar Saleh, Ramdan Salehuddin Salehuddin, Salehuddin Salehudin Salehudin Salehudin Salehudin, Salehudin Salsabila, Fera Fitri Seniari, Ni Made Sideman, IAO Suwati Sukartono Suparjo Suparjo Suparjo SUPRIYADI, ANID Suwardji Tajidan, Tajidan Tri Rachmanto Veithzal Rivai Zainal WIRADARMA, LALU WIRAHMAN WIRADHARMA, LALU WIRAHMAN Yusron Saadi