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ANALISIS BALIK KESTABILAN LERENG STUDI KASUS TAMBANG BATUBARA PT.X MENGGUNAKAN ANALISIS PROBABILISTIK MONTE CARLO Andhini, Dhini; Ramadhanti, Fitra; Koesnaryo, S.
Prosiding Seminar Teknologi Kebumian dan Kelautan Vol 1, No 1 (2019)
Publisher : Prosiding Seminar Teknologi Kebumian dan Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1955.354 KB)

Abstract

PT. X merupakan perusahaan tambang batubara dimana penambangan dilakukan dengan metode Open Pit Mining. Studi geoteknik telah dilakukan pada 3 tahun sebelumnya, tetapi pada kondisi aktual terkini area lowwall Panel A terjadi longsoran dikarenakan geometri lowwall tidak mengikuti rekomendasi kajian geoteknik, hal ini terjadi karena apabila geometri lereng mengikuti kajian geoteknik maka akan mengakibatkan nilai stripping ratio yang besar. Pemodelan dan analisis kemantapan lereng menggunakan pemodelan metode Kesetimbangan Batas (Limit Equilibrium Method) dengan analisis probabilistik Monte Carlo. Permodelan dilakukan dengan menggunakan bantuan perangkat lunak  software    ata kondisi awal dari area panel   yaitu pada lapisan sandstone dengan kohesi  c        kN m dan sudut gesek dalam               siltstone: c        kN m             claystone  c       kN m dan           Analisis faktor keamanan (FK) dan rekomendasi geometri lereng menggunakan metode Simplified Janbu dan metode Simplified Bishop. Hasil dari kedua metode analisis digunakan nilai dari metode Simplified janbu karena memiliki nilai yang rendah dari metode Simplified Bishop sehingga nilai dari faktor keamanan dapat dilihat dari kemungkinan terburuk yaitu, longsoran area lowwall Panel A merupakan longsoran bidang dikarenakan kondisi lereng tidak stabil serta adanya bidang perlapisan yang lemah  dimana  K longsoran       dengan kemiringan       ebelum kelongsoran  K       dengan kemiringan      Parameter geoteknik dari analisis balik longsoran adalah claystone  c        kN m  dan             siltstone: c        kN m dan           sandstone  c        kN m dan            adapun rekomendasi kajian geoteknik dimana  K       yaitu dengan kemiringan lereng      PT. X is a coal mining company where mining is carried out using the Open Pit Mining method. Geotechnical studies have been carried out in the previous 3 years, but in actual conditions previously reported lowwall panel A avalanches occur because the lowwall geometry is not reviewed by geotechnical review, this occurs because it is reviewed by geometry, geotechnical exploration, then there will be a large stripping ratio value. Modeling and analysis of slope stability using the Limit Equilibrium Method with the Monte arlo probabilistic analysis Modeling is done using software he initial condition data from the panel area were in the sandstones with cohesion c kN m and friction angle siltstone: c '= 28.8 kN / m, claystone c kN m and Safety factor analysis (FK) and slope geometry approval using the Simplified Janbu method and the Simplified Bishop method. The results of the two methods of analysis used the value of the Simple janbu method because it has a low value from the imple ishop method to ensure the value of the safety factor can be seen from the worst problem Panel s lowwall landslide area weak field landslide where K landslide with a slope of efore the landslide K with a slope of he geotechnical parameters of the landslide reverse analysis are claystone c kN m and siltstone c kN m and sandstone c kN m and as for the geotechnical discussion where K is with a slope of 
HASIL BELAJAR PKN DENGAN MENGGUNAKAN MODEL SOCIAL PROBLEM SOLVING DI KELAS V SDN 01 KECAMATAN GUGUAK Ramadhanti, Fitra; Reinita, Reinita; Mahyuddin, Ritawati
e-Jurnal Inovasi Pembelajaran Sekolah Dasar Vol 6, No 2 (2018): (Mei-Agustus) e-JIPSD
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/e-jipsd.v6i2.4507

Abstract

                                        ABSTRACT The purpose of this research was to describe an increase in student learning outcomes in Civics learning with the Social Problem Solving Model in class V 01 SDN VII Koto Talago Guguak Subdistrict. This type of research is Class Action Research using qualitative and quantitative approaches with planning, implementation, observation, and reflection. Research data from observations, test results and non-tests. Conducted in Semester I Academic Year 2018/2019. The research subjects were teachers as observers, researchers as practitioners, and class V students as many as 20 people, namely 7 men and 13 female students. The results of the first cycle of research on lesson plans averaged 67.85% (sufficient), increasing in the second cycle to 89.3 % (well). The implementation of the first cycle on the aspect of the teacher averaged 80.55% (good), increased in the second cycle to 97.22% (very good). The implementation of the first cycle on the aspects of students on average 66.66% (sufficient), increased in the second cycle to 94.44% ( very good). Student learning outcomes in the first cycle averaged 74.30 (enough), increased in the second cycle to 89.17 (good). Can be concluded Model Social Problem Solving shows an increase in student learning outcomes in Civics learning in class V Public Elementary School 01 VII Koto Talago District Guguak. Keywords: Social Problem Solving model, PKn Learning Outcomes, Elementary Students
HASIL BELAJAR PKN DENGAN MENGGUNAKAN MODEL SOCIAL PROBLEM SOLVING DI KELAS V SDN 01 KECAMATAN GUGUAK ramadhanti, fitra; reinita, reinita; mahyuddin, ritawati
e-Jurnal Inovasi Pembelajaran Sekolah Dasar Vol 6, No 2 (2018): (Mei-Agustus) e-JIPSD
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/e-jipsd.v6i2.4498

Abstract

ABSTRACT The purpose of this research was to describe an increase in student learning outcomes in Civics learning with the Social Problem Solving Model in class V 01 SDN VII Koto Talago Guguak Subdistrict. This type of research is Class Action Research using qualitative and quantitative approaches with planning, implementation, observation, and reflection. Research data from observations, test results and non-tests. Conducted in Semester I Academic Year 2018/2019. The research subjects were teachers as observers, researchers as practitioners, and class V students as many as 20 people, namely 7 men and 13 female students. The results of the first cycle of research on lesson plans averaged 67.85% (sufficient), increasing in the second cycle to 89.3 % (well). The implementation of the first cycle on the aspect of the teacher averaged 80.55% (good), increased in the second cycle to 97.22% (very good). The implementation of the first cycle on the aspects of students on average 66.66% (sufficient), increased in the second cycle to 94.44% ( very good). Student learning outcomes in the first cycle averaged 74.30 (enough), increased in the second cycle to 89.17 (good). Can be concluded Model Social Problem Solving shows an increase in student learning outcomes in Civics learning in class V Public Elementary School 01 VII Koto Talago District Guguak. Keywords: Social Problem Solving model, PKn Learning Outcomes, Elementary Students
HASIL BELAJAR PKN DENGAN MENGGUNAKAN MODEL SOCIAL PROBLEM SOLVING DI KELAS V SDN 01 KECAMATAN GUGUAK Ramadhanti, Fitra; Reinita, Reinita; Mahyuddin, Ritawati
e-Jurnal Inovasi Pembelajaran Sekolah Dasar Vol 6, No 2 (2018): (Mei-Agustus) e-JIPSD
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/e-jipsd.v6i2.4507

Abstract

                                        ABSTRACT The purpose of this research was to describe an increase in student learning outcomes in Civics learning with the Social Problem Solving Model in class V 01 SDN VII Koto Talago Guguak Subdistrict. This type of research is Class Action Research using qualitative and quantitative approaches with planning, implementation, observation, and reflection. Research data from observations, test results and non-tests. Conducted in Semester I Academic Year 2018/2019. The research subjects were teachers as observers, researchers as practitioners, and class V students as many as 20 people, namely 7 men and 13 female students. The results of the first cycle of research on lesson plans averaged 67.85% (sufficient), increasing in the second cycle to 89.3 % (well). The implementation of the first cycle on the aspect of the teacher averaged 80.55% (good), increased in the second cycle to 97.22% (very good). The implementation of the first cycle on the aspects of students on average 66.66% (sufficient), increased in the second cycle to 94.44% ( very good). Student learning outcomes in the first cycle averaged 74.30 (enough), increased in the second cycle to 89.17 (good). Can be concluded Model Social Problem Solving shows an increase in student learning outcomes in Civics learning in class V Public Elementary School 01 VII Koto Talago District Guguak. Keywords: Social Problem Solving model, PKn Learning Outcomes, Elementary Students
HASIL BELAJAR PKN DENGAN MENGGUNAKAN MODEL SOCIAL PROBLEM SOLVING DI KELAS V SDN 01 KECAMATAN GUGUAK ramadhanti, fitra; reinita, reinita; mahyuddin, ritawati
e-Jurnal Inovasi Pembelajaran Sekolah Dasar Vol 6, No 2 (2018): (Mei-Agustus) e-JIPSD
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/e-jipsd.v6i2.4498

Abstract

ABSTRACT The purpose of this research was to describe an increase in student learning outcomes in Civics learning with the Social Problem Solving Model in class V 01 SDN VII Koto Talago Guguak Subdistrict. This type of research is Class Action Research using qualitative and quantitative approaches with planning, implementation, observation, and reflection. Research data from observations, test results and non-tests. Conducted in Semester I Academic Year 2018/2019. The research subjects were teachers as observers, researchers as practitioners, and class V students as many as 20 people, namely 7 men and 13 female students. The results of the first cycle of research on lesson plans averaged 67.85% (sufficient), increasing in the second cycle to 89.3 % (well). The implementation of the first cycle on the aspect of the teacher averaged 80.55% (good), increased in the second cycle to 97.22% (very good). The implementation of the first cycle on the aspects of students on average 66.66% (sufficient), increased in the second cycle to 94.44% ( very good). Student learning outcomes in the first cycle averaged 74.30 (enough), increased in the second cycle to 89.17 (good). Can be concluded Model Social Problem Solving shows an increase in student learning outcomes in Civics learning in class V Public Elementary School 01 VII Koto Talago District Guguak. Keywords: Social Problem Solving model, PKn Learning Outcomes, Elementary Students