Suryadi Suryadi
Universitas Negeri Padang

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Analisis Geometri Peledakan untuk Meminimalisir Jarak Lemparan Batuan (Flyrock) pada Peledakan Tambang Terbuka PT Ansar Terang Crushindo II Pangkalan Sumatera Barat Dengan Visualisasi menggunakan Drone DJI Phantom 4 Suryadi Suryadi; Raimon Kopa
Journals Mining Engineering : Bina Tambang Vol 4, No 3 (2019): Journals Mining Engineering: Bina Tambang
Publisher : Departemen Teknik Pertambangan FT UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (977.539 KB) | DOI: 10.24036/bt.v4i3.105681

Abstract

Abstract. Flyrock is the fragmentation of rocks that are thrown due to result of blasting. Fragmentation of rocks thrown over a safe radius can cause damage to mechanical devices, injuries, and even death to humans. This is what causes the effects of flyrock to be one of the main concerns in every blasting activity. This study aims to analyze the better of geometry in order to reduce the distance of flyrock. The study was conducted on 11 blasting blocks, by comparing the distance of flyrock before and after the geometric changes of the blasting, including seven blasting without simulation and four blasting with the simulation. Observation of the distance of flyrock in detail using DJI Phantom 4 drones and plotting coordinates with GPS (Global Positioning System). Theoretically the distance of rock throws according to the empirical method with the theories of Richard and Moore (2005) is 65 m, and Lundborg  (1981) 107.25 m. Whereas according to the method of dimensional analysis with the theory of Ebrahim Ghasemi (2012) it is 110.53 m. Of the seven blasting activities obtained the average distance of rock throws (flyrock) is 143 m with the farthest distance of 160 m. Thus Ebrahim Ghasemi's theory is more representative in predicting the distance of rock throws because it has a smaller difference (22%). Simulation of blasting activities is carried out by changing geometry in stemming depth, because statistically stemming has a very strong relationship to the distance of flyrock  (R2 = 0.84), where stemming can control energy in the hole so it is not released upwards in giving rocks to the side. Besides that the increase in stemming causes hole depth to also increase. From the four blasting simulation activities carried out, the average flyrock distance was 53.95 m with the furthest distance 63.2 m. This means that with the simulation the distance of flyrock can be minimized by 89.05 m or about 62.27%.Keywords: Blastability Geometry, Flyrock
HUBUNGAN KEMAMPUAN MENYELESAIKAN TUGAS-TUGAS PELAJARAN DENGAN HASIL BELAJAR SISWA Suryadi Suryadi; Erlamsyah Erlamsyah; Yusri Yusri
Jurnal EDUCATIO: Jurnal Pendidikan Indonesia Vol 2, No 2 (2016): Jurnal EDUCATIO: Jurnal Pendidikan Indonesia
Publisher : Indonesian Institute for Counseling, Education and Therapy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (553.427 KB) | DOI: 10.29210/12016260

Abstract

Student learning outcomes are influenced by the ability to complete the learning task. Phenomena in the field most of the students are not able to complete the task given lesson. This study aims to reveal how the relationship between the ability to complete the task of learning to students' learning outcomes. This study uses quantitative type of correlational research. The study population was a junior high school UNP (Padang State University) Development Laboratory by the number of students 384 people. Sample is proportional random sampling by the number of students 78. There is a significant relationship between the ability to complete the task of learning to students' learning outcomes.
Naskah Adat Minangkabau dalam Kajian Filologi Sinta Yulia Maharani; Amril Amir; Suryadi Suryadi
Jurnal Pendidikan Tambusai Vol. 8 No. 1 (2024): April 2024
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai, Riau, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jptam.v8i1.12603

Abstract

Penelitian ini membahas mengenai naskah kuno Adat Minangkabau yang dibahas dalam kajian filologi. Tujuan penelitian ini adalah untuk mengetahui Undang-Undang Adat dalam Nagari yang terdiri atas enam pasal yaitu pasal delapan puluh lima yang berisikan Undang-Undang Adat dalam Nagari, pasal delapan puluh enam yang berisikan Undang-Undang Nan Dua Puluh, pasal delapan puluh tujuh yang berisikan Undang-Undang Nan Delapan, pasal delapan puluh delapan yang berisikan Undang-Undang Nan 12 ke I, pasal delapan puluh sembilan yang berisikan Undang-Undang Nan 12 ke II, pasal sembilan puluh yang berisikan Undang-Undang Nan 12 ke III. Penelitian ini adalah penelitian filologi dengan metode deskriptif. Hasil dari pennelitian ini menjelaskan mengenai pasal-pasal yang terdapat dalam undang-undang adat dalam nagari yang terdapat dalam naskah kuno adat Minangkabau.