DETAIL KOLEKSI

Analisa potensi longsor menggunakan proyeksi stereografis dan klasifikasi massa batuan pada kuari B4, di PT Semen Tonasa, Kabupaten Pangkep, Sulawesi Selatan

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Oleh : Eben Ezer Sitompul

Info Katalog

Nomor Panggil : 696/TT/2019

Penerbit : FTKE - Usakti

Kota Terbit : Jakarta

Tahun Terbit : 2019

Pembimbing 1 : Masagus Ahmad Azizi

Pembimbing 2 : Irfan Marwanza

Subyek : Mining engineering - Slope stability analysis

Kata Kunci : window mapping, RMR Bieniawski, stereographic analysis, slope failure, kinematic analysis.


File Repositori
No. Nama File Ukuran (KB) Status
1. 2019_TA_TB_073001300104_Halaman-judul.pdf 1718.48
2. 2019_TA_TB_073001300104_Bab-1.pdf 572.79
3. 2019_TA_TB_073001300104_Bab-2.pdf 1499.37
4. 2019_TA_TB_073001300104_Bab-3.pdf 788.28
5. 2019_TA_TB_073001300104_Bab-4.pdf 2537.8
6. 2019_TA_TB_073001300104_Bab-5.pdf 481.71
7. 2019_TA_TB_073001300104_Daftar-pustaka.pdf 636.45
8. 2019_TA_TB_073001300104_Lampiran.pdf 1511.04

P PT Semen Tonasa melakukan kegiatan eksploitasi batu gamping dimanaperlu adanya analisis potensi longsoran pada lereng di kuari B4. Penelitian inibertujuan mengukur seberapa besar potensi longsoran secara stereografis padalereng elevasi 60 meter. Data primer dikumpulkan melalui window mapping,dimana semua struktur yang tersingkap pada permukaan lereng dicatat dan dibagike dalam beberapa window. Lereng dibagi ke dalam 5 cell / window. Data dariwindow mapping kemudian dikonversi menjadi klasifikasi massa batuan rock massrating Bieniawski. Data pemetaan diolah menggunakan analisa stereografis dengansoftware dips dari Rocscience untuk memperoleh orientasi bidang lemah, kemudianditinjau pada kriteria keruntuhan Hoek dan Brown untuk memperoleh sudut gesekdalam batuan dengan menggunakan bantuan software Roclab dari Rocscience. Darihasil penelitian ini didapatkan bobot rock mass rating pada window 1 sebesar 65,window 2 sebesar 70, window 3 sebesar 73, window 4 sebesar 68, dan window 5sebesar 73 menunjukkan bahwa klasifikasi massa batuan di kuari B4 masuk dalamkelas II yaitu good rock dengan kisaran bobot nilai 61 sampai 80 dan didapatkan 1dari 5 lokasi window mapping berpotensi longsoran bidang yaitu window 3.Sedangkan lokasi window lainnya tidak memenuhi syarat – syarat kinematik darijenis - jenis longsoran.

P PT Semen Tonasa conducts limestone exploitation activities where ananalysis of potential landslides on slopes in quarry B4 is required. This study aimsto measure the magnitude of the potential of the avalanche stereographically on aslope of elevation of 60 meters. Primary data is collected through a mappingwindow, where all structures revealed on the slope surface are recorded and dividedinto several windows. Slopes are divided into 5 cells / windows. Data from themapping window is then converted to Bieniawski rock mass rating rock massclassification. Mapping data was processed using stereographic analysis with dipssoftware from Rocscience to obtain weak field orientation, then reviewed the Hoekand Brown collapse criteria to obtain friction angles in rocks using the help ofRoclab software from Rocscience. From the results of this study it was found thatthe rock mass rating weights in window 1 was 65, window 2 was 70, window 3 was73, window 4 was 68, and window 5 was 73 indicating that the rock massclassification in B4 quarry was included in class II namely good rock with aweighting range of values of 61 to 80 and obtained 1 out of 5 window mappinglocations with potential plane failure, namely window 3. While other windowlocations do not meet the kinematic requirements of the types of failures.

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