Standar Jalan Tambang / Hauling Lebar Jalan Angkut. Dimensi untuk jalan angkut adalah 3 ½ kali lebar alat angkut terbesar yang ada. Konstruksi Jalan Angkut. Pada umumnya kontruksi jalan tambang harus memenuhi dua syarat yaitu : 1. Harus cukup kuat untuk menahan beban atau berat kendaraan diatasnya. Apabila daya dukung jalan tidak kuat menahan beban (berat kendaraan), maka jalan akan mengalami penurunan dan pergeseran pada pengeras jalan maupun tanah dasar sehingga jalan akan bergelombang dan mengalami kerusakan.
2. Permukaan jalan harus dapat menahan gesekan dari roda kendaraan, pengaruh air permukaan dan hujan. Pengerasan Jalan Angkut. Untuk pengerasan dan pemadatan jalan angkut setelah dilakukan perataan dengan peralatan grader dapat di lakukan dengan compactor. Tanggul (SAFETY BERM) Sebagai pelindung pengguna jalan tambang atau jalan angkut apabila terjadi sesuatu pada unit yang beroperasi. Adapun dimensi dari tanggul pengaman adalah ½ dari tinggi roda alat angkut yang ada. Penirisan (DRAINAGE) Untuk supaya jalan angkut tidak tergenang air pad a waktu hujan, maka dibuatkan saluran penirisan di kanan kiri jalan. jalan. Selain itu diperlukan gorong-gorong untuk mengalirkan air air yang membelah jalan. Persyaratan Lainnya. Adapun persyaratan lainnya adalah jalan angkut tersebut haruslah lokasi terbuka tidak tertutup oleh canopy pohon/semak/tanaman lain.
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Jalan Tambang
Pernah liat jalan tambang ga gan??? kalo belum, jalan2 gih ke "Sanggulan".. wekekekkee.. buat yang pernah ke sanggulan, pasti berkesan bgt tuh..
o, ya!! saia punya sedikit informasi tentang jalan tambang nih gan.. ni file ane dapet dari tmen kelas,.
moga dapat membantu..
cekidot aaja gan..
1. LEBAR JALAN PADA JALAN LURUS
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Lmin = n.Wt + (n+1)(½ Wt)
Bila lebar kendaraan (Wt) 1 satuan panjang, maka Lmin spt pada tabel berikut:
Bila lebar Cat773D = 5,076 m, maka untuk 2 lajur jalan: Lmin = 2 (5,076) + (2+1)(½ x 5,076) = 17,77 ~ 18 m 2. Lebar Jalan Pada Tikungan
Penentuan lebar jalan pada tikungan (belokan) didasarkan pada: -Lebar jejak ban -Lebar juntai (overhang) bagian depan dan belakang saat kendaraan belok -Jarak antar kendaraan saat bersimpangan -Jarak dari kedua tepi jalan<
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Wmin = 2 (U+Fa+Fb+Z) + C Z = (U+Fa+Fb)/2 U = Lebar jejak roda (center to centertires), m Fa = lebar juntai (overhang) depan, m Fb = lebar juntai belakang, m Z = lebar bagian tepi jalan, m C = clearance antar kendaraan, m
Contoh perhitungan Wmin pada tikungan:
Lebar jejak ban pada saat bermuatan = 0,70 m Jarak antar pusat ban = 3,30 m Saat belok lebar jejak ban depan = 0,80 m; lebar jejak ban belakang = 1,65 m Jarak antar dua truck = 4,50 m
Z = (3,30+0,80+1,65)/2 = 2,875 m Wmin = 2(3,3+0,8+1,65+2,875) + 4,5 = 21,75 m ~ 20 m
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Perhitungan matematis berdasarkan kenampakan gambar diatas diperoleh jari-jari tikungan sbb:
Apabila: R= jari-jari belokan jalan, m W= jarak poros roda depan-belakang, m B= sudut simpangan roda depan,
maka:
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Jari-jari tikungan minimum untuk e .max = 10%
4. Jenis-jenis Jenis-jenis B usur Lengk un ungg Pad Pada a Tikungan
4.1 Ling karan karan (Full Circ le) le)
4.2 S piralpiral-Ling Ling karan-Spiral karan-Spiral (S -C-S ):
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5. S UP E R E L E V A S I
*Badan jalan yang dimiringkan ke arah titik pusat pada belokan/tikungan *Fungsinya untuk mengatasi gaya sentrifugal kendaraan pada saat membelok
6. K em emiring iring an J ala lan n *Kemiringan maksimum vs kecepatan
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7. CR OSSS LOPE
Sudut yang dibentuk oleh dua sisi permukaan jalan thd bidang horizontal
Cross slope sebaiknya 1/50 s.d 1/25 (20 mm/m s.d. 40 mm/m)
8. Perkeras P erkeras an J ala lan n
Perkerasan jalan ada 3 jenis, yaitu: -perkerasan lentur (flexible pavement) -perkerasan kaku (rigid pavement) -perkerasan kombinasi lentur-kaku (composite pavement)
Perkerasan jalan tersusun sbb: -lapisan dasar (subgrade) -lapisan fondasi bawah (subbase course)
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Susunan lapisan perkerasan rigid
Karakteristik lapisan perkerasan lentur:
-elastis jika menerima beban, shg nyaman bagi pengguna jalan -umumnya menggunakan bhn pengikat aspal -seluruh lapisan ikut menanggung beban -penyebaran tegangan diupayakan tdk merusak lapisan subgrade (dasar) -bisa berusia 20 tahun dgn perawatan secara rutin.
Lapisan perkerasan rigid adalah lapisan per-mukaannya terbuat dari plat beton (concrete slab). Penentuan tebal lapisan ditentukan oleh:
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-kepadatan (compaction) -perubahan kadar air selama usia pelayanan -variabilitas tanah dasar -ketebalan lap perkerasan total yg dpt diterima oleh lap lunak yang ada dibawahnya.
8.2 Lapis an Pondas Pondas i B awah wah
-Merupakan bagian perkerasan untuk menyebarkan beban roda ke tanah dasar -untuk mengurangi tebal lapisan di atasnya krn material utk lapisan ini lebih murah dibanding dgn lapisan atasnya -sebagai lapisan peresapan air tanah -merupakan lapisan pertama yg hrs diselesaikan agar kualitas lapisan tanah dasar tetap terjaga -mencegah partikel-pertikel halus dari tanah dasar naik ke lapisan fondasi
8.3 Lapis an Pondas Pondas i A tas tas
-Bagian perkerasan utk menahan gaya melintang dari roda dan menyebarkan ke lapisan dibawahnya -sebagai lapisan peresapan air dari bawah -sebagai bantalan bagi lapisan permukaan
8.4 lapis lapis an P ermukaan
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Proses Pembuatan dan Perkerasan Jalan Tambang
Layanan perencanaan dan pekerjaan konstruksi pembuatan jalan tambang di Indonesia oleh SoilIndo. Melayani perusahaan tambang di seluruh daerah di nusantara Infrastruktur yang baik sangat dibutuhkan oleh kegiatan apapun, termasuk dalam proses penambangan. Kegiatan ini butuh sarana vital berupa jalan tambang untuk konektivitas dan pengangkutan barang tambang. Untuk itu diperlukan perencanaan pengerasan jalan tambang pada area penting untuk mengubungkan perkantoran, crushing plant , pengolahan bahan galian, perumahan karyawan dan wilayah tambang lainnya. Pada dasarnya perencanaan jalan tambang dan pembuatannya hampir sama dengan jalan lainnya, hanya saja berbeda pada bagian permukaan jalan atau road surface yang tidak mengandung unsur beton atau aspal seperti di jalan kota. Tujuannya agar jalan agar jalan tanah tanahb bisa dilewati oleh alat-alat berat dan peralatan mekanis yang menggunakan crawler track seperti seperti excavator , bulldozer , crawler rock drill (CRD), (CRD), track loader dan lainnya. Proses pembuatan jalan tambang dilakukan jauh hari sebelum penambangan dimulai. Perlengkapan mekanis yang sering digunakan untuk pembuatan jalan tambang ini berupa: 1. Buldozer Alat ini digunakan digunakan untuk untuk membersihkan membersihkan lahan serta serta melakukan melakukan pembabat pembabatan an area yang akan dibuat jalan tambang. tambang. Melakukan Melakukan perintisan perintisan jalan, jalan, memotong memotong timbunan timbunan dan dan melakukan melakukan perataan. perataan. Sehingga buldozer jadi alat yang pertama kali digunakan di area ini. 2. Alat Garu (roater (roater atau ripper) Selanjutnya gunakan garu untuk membantu dan mengatasi bebatuan keras yang menghalangi jalan. Alat ini membantu membantu perataa perataan n jalan secara secara manual manual dengan dengan menyingkirkan menyingkirkan batu batu batu batu keras di area. 3. Alat Muat Hasil Galian Jika perataan jalan tambang dilakukan pada saat ada gundukan tanah atau lokasi daratan yang
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Selanjutnya jalan tambang juga harus dilengkapi dengan drainase atau pengaliran air seperti pada jalan lain pada umumy umumya. a. Tujuan Tujuan utamanya utamanya untuk menampu menampung ng air hujan jika kondisi kondisi curah hujan tinggi tinggi dan menampung partikel kecil yang terbawa arus air hujan tadi. Jika melalui melewati sungai, maka harusi dibuat jembatan dengan konstruksi yang sama dengan jembatan kota. Namun jika hanya berupa parit kecil, bisa diatasi dengan penggunaan gorong-gorong ( culvert ) lalu dicampur tanah dan batu hingga ketinggian tertentu.
Pengukuran Geometri Jalan Tambang Tolok ukur pembangunan dan pengerasan jalan tambang telah berhasil sempurna adalah operasi onal transportasi di lokasi tambang berlansung dengan baik dan desain jalan tambang memiliki konstruksi stabil dalam jangka waktu lama. Rute jalan tambang yang identik dengan medan berat dan sulit dilalui tentu jadi tantangan tersediri untuk membangunnya. Dengan pengukuran geometri yang tepat tentu bisa memaksimalkan hasil yang diperoleh. Berikut ini dipaparkan geometri jalan tambang yang harus diperhatikan ketika awal pembuatan konstruksinya, disajikan oleh SoilIndo, perusahaan perkerasan jalan tanah di Jakarta dengan layanan perencanaan dan konstruksi pembangunannya di seluruh Indonesia. 1. Lebar Jalan Angkut Lebar angkut yang ideal adalah disesuaikan dengan kebutuhan pengangkutan di atas jalan tersebut. Hal ini tentu bisa berbeda-beda setiap pembuatan jalan tambang karena fungsi jalan pun berbeda. Termasuk untuk perhitungan lebar jalan pada kelokan atau tikungan yang harus lebih lebar dibandingkan jalan lurus. Pada kelokan, kendaraan membutuhkan ruang gerak yang lebih lebar untuk melewatinya.
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dilakukan untuk mengetahui sudut maksimum penyimpangan kendaran dengan merumus kecepatan (km/jam), super elevasi (%), besar derajat tikung dan koefisien gesek melinang. Tujuannya untuk menghindari kemungkinan kecelakaan pada kecepatan terntentu saat superelevasi maksimum dan koefisien gesek maksimum tercapai. 3. Kemiringan Jalan
Kemiringan pada saat melakukan pembuatan dan perkerasan jalan tambang tentu sangat penting agar kemampuan alat angkut dapat berfungsi maksimal pada saat pengereman pada turunan dan melaju pada tanjakan. Pada pengukuran jalan tambang, kemiringan diukur dalam bentuk persentase (%). Jalan tambang maksimum yang bisa dilewati oleh truk berkisar antara 10% sampai 15% atau berupa 6o sampai 8,5o. Sedangkan untuk jalan naik atau turun bukit maksimum memiliki kemiringan 8%. Untuk itu jika lebih dari 8% maka harus dibuat kelokan agar kemiringan bisa berkurang. 4. Cross Slope
Cross slope merupakan sudut bentukan dari dua sisi permukaan jalan pada bidang horizontal. Meski pada umumnya jalan memiliki bentuk penampang melintang, namun harus dibuat dengan sudut bentukan tertentu agar bisa memperlancar aliran air. Jika hujan turun maka air akan segera mengalir ke tempat jalan angkut, dan tidak berhenti pada permukaan jalan. Genangan air pada tengah permukaan jalan tambang bisa membahayakan kendaraan yang melaluinya dan mempercepat kerusakan jalan. Perhitungan cross slope adalah dengan perbandingan jarak vertikal dan hrizontal. Jalan tambang ideal seharusnya memiliki nilai cross slope antara 1/50 sampai 1/25 atau 20 mm/m hingga 40 mm/m. Setelah konstruksi dilakukan dengan tepat, maka selanjutnya adalah pengerasan jalan tambang agar bisa menopang beban angkutan. Mulai dari perkerasan lentur (flexible pavement), perkerasan kaku
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Standar Jalan Tambang Sesuai KepMen ESDM No 1827 K/30/MEM/20 K/30/MEM/2018 18 Keputusan menteri ESDM nomor 1827 K/30/MEM/2018 tentang Pedoman J ala lan n perta rtam mbanga ngan n – Keputusan pelaksanaan Kaidah Kaidah Teknik Pertambangan Pertambangan yang yang Baik memberikan memberikan acuan dalam dalam melakukan melakukan tata cara pertambangan yang yang baik (good mining practice). practice). Beberapa aspek yang yang masuk dalam kaidah kaidah pertambangan yang yang baik diantaranya diantaranya yaitu: 1. teknis pertambangan; 2. konservasi Mineral dan Batubara; 3. keselamatan dan kesehatan kerja pertambangan; 4. keselamatan operasi pertambangan; 5. pengelolaan lingkungan hidup pertambangan, Reklamasi, dan Pascatambang, serta Pascaoperasi Pascaoperasi;; 6. pemanfaatan teknologi, kemampuan rekayasa, rancang bangun, pengembangan, dan penerapan teknologi pertambangan
Perusahaan yang bergerak bergerak di indusri pertambang pertambangan an yang ingin melaksanakan melaksanakan good good mining practice tentu practice tentu harus memperhatikan 6 aspek di atas.
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Lebar Jalan Tambang/Produksi Lebar jalan tambang/produksi mempertimbangkan mempertimbangkan alat angkut terbesar yang melintasi jalan tersebut paling kurang:
Tiga setengah kali lebar alat angkut terbesar, untuk jalan tambang dua arah
Dua kali lebar alat angkut terbesar, untuk jalan tambang satu arah
Lebar jalan pada jembatan sesuai ketentuan di atas.
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Kemiringan Melintang (Cross fall) Sepanjang permukaan badan jalan tambang/pro tambang/produksi duksi dibentuk kemiringan melintang (cross fall) paling kurang 2% 2% (dua persen)
Kemiringan Jalan (Grade) Kemiringan (grade) jalan tambang/produksi dibuat tidak boleh lebih 12% (dua belas persen) dengan memperhitungkan:
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Spesifikasi teknis alat; dan
Spesifikasi teknis jalan
Pemisah Jalur (Separator atau Median) Pada setiap tikungan dan persimpangan jalan tambang/produksi dipasang pemisah jalur ( separator) dengan tinggi paling kurang setengah diameter roda kendaraan terbesar dan lebar bagian atas paling kurang sama dengan lebar roda kendaraan terbesar.
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Di sepanjang jalan tambang/produksi memiliki sistem penyaliran yang mampu mengalirkan debit air larian tertinggi dan dipelihara dengan baik
Lebar, radius tikungan, dan super elevasi pada setiap jalan pertambangan yang menikung mampu menahan gaya dari setiap jenis kendaraan yang melintas dengan batasan kecepatan yang telah ditentukan;
Jjalan pertambangan dilakukan pemeliharaan dan perawatan sehingga tidak menghambat kegiatan pengangkutan pengangkutan;;
Daya dukung jalan pertambangan lebih kuat dari kapasitas terbesar beban kendaraan dan muatan yang melintas pada beban statis dalam kurun waktu tertentu berdasarkan kajian teknis.
Itulah beberapa ketentuan jalan pertambangan yang diatur dalam KepMen ESDM no 1827 K/30/MEM/2018 K/30/MEM/201 8 tentang Pedoman Pelaksana Pelaksanaan an Kaidah Teknik Pertambangan Yang Baik.
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Perencanaan dan Prosese Pembuatan Jalan Tambang PERENCANAAN JALAN TAMBANG Proses perencanaan badan jalan, agar mendapatkan desain yang kompeten sehingga dapat mengakomodir kebutuhan operasional penambangan. Perencanaan jalan meliputi : a. Perencanaan geometri
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3. Vertical Curve Length
HORISONTAL ALINYEMEN
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Crossfall terlalu miring : 1. Erosi, batu tertinggal dipermukaan 2. Pembebanan yang berlebihan pada ban luar 3. Permukaan jalan kasar, ban cepat aus