laporan praktikum survei elektro magnetik GPR. Pendahuluan Ground Penetrating Radar (GPR) merupakan bagian dari metoda Geofisika Elektromagnetik (EM) domain waktu. Pulsa radio dengan durasi…Full description
Tinjauan pustaka : Setelah data konsumsi diperoleh, maka pengolahan tahap pertama yang dilakkukan adalah konversi dari ukuran rumah tangga (URT ) ke dalam ukuran berat (gram) atau dari sat…Full description
Tinjauan pustaka : Setelah data konsumsi diperoleh, maka pengolahan tahap pertama yang dilakkukan adalah konversi dari ukuran rumah tangga (URT ) ke dalam ukuran berat (gram) atau dari sat…Deskripsi lengkap
Full description
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Pembuatan Peta Batimetri Pelabuhan Tanjung Adikarto, Kulon Progo, DIY
JURUSAN TEKNIK GEODESI & GEOMATIKA FAKULTAS TEKNIK UNIVERSITAS GADJAH MADA 2015
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Materi :
Pembuatan Mine Design pada pertambangan Batubara Tujuan :
Mahasiswa dapat mengaplikasikan dan mengolah data topografi, drilling, logging untuk mendesign model seam batubara, menghitung coal resourche s, volume tanah penutup, mendesign cropline & final wall serta menghitung nilai Stripping ratio (SR). Final wall didesign membentuk bench (berundak). Data :
Disediakan data topografi (.str) dan data titik bor (koordinat dan elevasi) dalam format .csv.
Langkah Kerja
1.
Membuat file str untuk roof & floor tiap seam.
Buka file berekstensi *.xls yang sudah disediakan
Buat file dalam xls dengan format kolom : Y,X,Z,string,code.
Simpan file yang sudah diedit tersebut dalam format csv dan dalam surpac versi 4 harus ada id_number dibelakang nama file. Lakukan import data pada surpac. Isikan sesuai dengan letak dan jumlah kolom yang ada pada file csv.
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Hasil import point dari file .csv. lakukan breakline dengan tool
Hasil setelah dilakukan breakline. Roof Seam A
Floor seam A
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Roof seam B
Floor Seam B
2. Meng-extend data bor untuk roof dan floor semua seam.
Melihat gradient dengan memilih icon report bearing and distance between two point.
Cara tersebut untuk menentukan gradient dengan cara klik titik pertama (kiri) dan titik kedua (kanan), berikut merupakan tampian gradiennya. Gradien menunjukkan positif sehingga menunjukkan ke arah updeep.
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Setelah diketahui arah updeep ke arah kanan maka untuk melakukan cropline dilakukan extend kea rah kanan,
Hasil extend : Roof seam A extend
Floor Seam A extend
Roof seam B extend
Floor Seam B extend
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3. Membuat DTM pada data topografi original. ori ginal.
Hasil :
4. Membuat DTM data bor hasil extend untuk roof & floor tiap seam. DTM roof seam A
DTM floor seam A
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DTM roof seam B
DTM floor seam B
5. Membuat cropline (untuk tiap seam) > menggunakan yang floor seam A(kiri) seam B (kanan)
Cropline dibuat dengan cara klik menu surface > Clip or inters ect DTMs > Line of intersection between DTMs.
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6. Membuat boundary final wall 7. Joint cropline+final wall
Menggunakan floor untuk seam terbawah
Dilakukan Join segment terlebih dahulu, kemudian dilakukan draped st ring over DTMs. Hasil :
8. Mendesign final wall dengan ketentuan ; tinggi bench 10m, lebar bench 6m dan gradien 80%.
Langkah pertama melakukan set slope gradient.
Kemudian menentukan tinggi bench.
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Hasil desain final wall pada ketinggian -10.
Hasil sampai ketinggian 100
9. Membuat DTM dari dari desain final wall.
10. Melakukan intersect DTM Final wall dengan DTM topo original.
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Hasil intersect belum bagus , sehingga perlu dilakukan proses editing.
11. Mendigitasi ulang hasil intersect agar boundary terbentuk lebih rapi dan menghindari adanya segmen yang terputus dan tidak close/wise.
Hasil proses digitasi :
12. Melakukan trim outside boundary hasil (8) menggunakan boundary (11).