guide to coal extraction mining
TRANSCRIPT
8/6/2019 Guide to Coal Extraction Mining
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GUIDE TO COAL MINING EXTRACTION FOR LISAT PITCONCESSION OF PT TEGUH SINAR ABADI‐BAYAN RESOUR Tbk,
‐‐ General Coal General Coal StratigraphyStratigraphy, physical and characteristic of coal, physical and characteristic of coal
‐‐
‐‐ Cleaning CoalCleaning Coal
‐‐ Coal Gettin & StockinCoal Gettin & Stockin
‐‐ Coal Loading & HaulingCoal Loading & Hauling
Prepared & presented by:
MELAK MINE PROJECT
La Ode Sapta A.Sn. Geologist, Melak Mine Project
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Introduction
Maksud :
‐
‐ Memberikan pemahaman prosedur yang benar dalam hal pembukaan batubara (expose), hingga
pengangkutan batubara ke pelabuhan.
Sasaran:
‐ Peserta dapat mengaplikasikan prosedur ekspose batubara hingga loading batubara di lapangan
Tujuan & Sasaran :
‐ Peserta mempunyai rasa memiliki terhadap bahan tambang (batubara)
‐ Peserta dapat bertanggung jawab atas operasional penambangan batubara
‐ Peserta memahami dengan baik prosedur yang benar dan dianjurkan.
‐ Peserta tidak melakukan pekerjaan diluar prosedur yang dianjurkan
‐ Menghasilkan produk batubara yang berkualitas baik untuk kepuasan client dan prestasi yang baik
.
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Coal on Lisat Pit
Lisat General Coal Stratigraphy / Urutan lapisan batubara Pit Lisat
60 m 20 mtopo
50 m15-18 m
Seam CSeam 2 Seam 1 Seam F Seam E Seam D
Based on TSA Geological Model
There is 6 Groups of Coal Seam
With various thickness
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Coal Model Lisat Pit
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Coal Model Lisat Pit
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S2
S2
S1
S2 SC
SE
SF
S1
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Coal on Lisat Pit
Seam D
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Coal on Lisat Pit
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Coal on Lisat Pit
Parting,carbonaceousmaterial
Clay band,sometime thick orthinning, or be lostin other place
Coal with clay band structure
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Coal on Lisat Pit
Batubara den an struktur men er ih susunan tidak teratur
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Exposing Coal
Seam Directions
COAL TYPE HARDNESS EXPOSE TO COAL ROOF COAL PROTEC'N EQUIPMENT SELECTION
Bright Variable No - Leave 3 cm (+) over coal Required 2U F D_1 D_2 PC1250, D, D8 maybe D9
Dull Hard Expose to coal D7, D9
SEAMSEAM THICKNESS
<0.4m
Guide for Exposing Coal in Lisat
Top clay band Variable Expose into clay band Cat824, PC 1250, D7maybe D9
Bright top Variable No - Leave 3 cm (+) over coal Required CL D E_1 E_2 Cat824, PC1250, D7maybe D9
Dull Hard Expose to coal D7, D9
Top clay band Variable Expose into clay band Cat824, PC1250, D7maybe D9
0.4 ~ 0.9m
Bright top Variable No - Leave 3 cm (+) over coal Required 2_1 2_2 1_1 1_2 Cat824, PC 1250, D7maybe D9
Dull Hard Expose to coal Cat824, PC 1250, D7maybe D9
Top clay band Variable Expose into clay band 1_1 1_2 1_3 1_4 Cat824, PC1250, D7maybe D9
NB: the above is only a guide to overburden operations that expose coal and is required to minimise coal losses.
>0.9m
Wherever possible - All bright friable coal must be preserved for product - particularly the tops of seams.
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Exposing Coal
Bright Coal Seam all seam on Lisat
.Cara expose yang benar, buka coal line terlebih dahulu
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Exposing Coal
Bund Wall
Leave OB min. 10 cmMin. 10 cm
Sisakan OB / interburden minimal tebal 10 – 30 cm.
For better coal recovery, expose coal to minimum 10 cm from roof coal
Avoid over dig on coal seam / Hindari Over Dig pada batubara.
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Exposing Coal
Do not dro OB on the to of coal.
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Exposing Coal
Leave OB / interburden minimum thick 10 cm.
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Exposing Coal
Over dig
space min. 1.00 m tostart drop cut
Hindari Over dig, usahakan big digger menggali OB dengan jarak minimal 1 m dari seam paling bawah.
Occurred cause of top coal face not clean up perfectly, or covered by bund wall
NB : Generally coal loose often occurred in this case particularly on night shift
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Exposing Coal
Material top soil berjatuhan karena ekspos yang salah, dapat menyebabkan kontaminasi batubara
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Exposing Coal
Coal contaminate by mud on melamuk pit. It must be expose the coal line / cropline first
before exposing coal, no bundwall
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Exposing Coal
material on the top will fall down to coal face
Wrong expose, it should be remove top soil first to found coal line
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Exposing Coal
1.00 m
Good expose, minimum interburden 10 cm left on roof coal, top coal face with space 1.00 meters.
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Cleaning Coal
Bund Wall
Remove OB/IB/Parting push &press until coal roof face (max.
Cleaning Coal
coa c eane cm rom oproof)
Clean up coal always use CoalBucket Excavator
Bund Wall
Clean coal
Load as OB
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Coal Getting
Bund Wall
Sisakanminimal 10 cm
Sisakan Floor minimum 10 cm jika lapisan batubara sulit untuk di stock
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Cleaning Coal
Always use coal bucket excavator, always use Hitachi 330 reach from top to
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Cleaning Coal
Clean coal, nice expose, ready to mine out
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Cleaning coal
Clay on ROM, please avoid this problem before the penalty from client.
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Stocking Coal Stocking coal strategy
Maximize Stocking coal min.high : 2 - 3 m
Maximize Stocking coal min.
high : 2 - 3 m
Top face, getting coal
from here to bottom
Coal suggested to stock until flat with base
- Stocking coal use PC400 with clean track condition (no mud)
‐ Reach and touch coal body slowly from top side to bottom
‐
Not suggested double handling cost
,
and clay banded with shalley structure, it will be fall down
‐ Coal stock in along expose coal
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Stocking Coal
Stock coal along expose coal if possible, reach from top to bottom.
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Stocking Coal
Good stocking, stocking height minimum 2 – 3 m for better cycle time.
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Coal Mined Out
Hanging Coal??
Clean up spot coal on floor to maximize coal recovery
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Coal Mined Out
Spot coal on Floor
Jangan meninggalkan floor dengan keadaan seperti dalam gambar, keep all coal
body mined out.
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Survey Pick Up
Floor Seam X
Floor Seam Y
Roof Seam X Dirty Coal
Pick up dirty coal / oxidize joint survey
with client, to calculate quantity
Over Dig coal loose penalty
Parting/interburden seam YNB : Generally coal loose often occurred in this case
Survey must be pick up all coal face such us, roof, floor, parting, dirtycoal before coal stocking and loading
Occurred cause of top coal face not clean up perfectly, or covered by bund wall
a e sure a coa superv sor nown a coa ave een p c up
Dirty Coal pick up must be communicate with geos & client for sign off
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Coal Mine Process
Coal ExposeCoal ExposeDrainage, bund wall, no material on top, etc
Form Loading CoalForm Loading CoalChecklistChecklist
Clean UpClean Up Coal BaseCoal BaseTo coal roof remove Use rader / small, ,
contamination
dozer, keep clean
Coal Getting & StockingCoal Getting & Stocking
Survey Pick UpSurvey Pick UpRoof, floor, parting,dirty coal, top face
Use PC 400, Cleantrack from mud, stockall expose if possible
Loading CoalLoading Coal
Use PC400, load totruck, don’t compact, just spilled on vessel
Sign Off
Mined outMined out
Keep clean floor, nohanging coal, no over dig
TCI – TSA(If any problem)
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PT TSA - FK P
Sign Off Join Pit
Date Inspection :
Time :
Location : PIT MELAMUK / LISAT
Ispected by : PT Thiess Contractors Indonesia PT TSA - FKP (Bayan Group)
1 1
2 2
3 3
Qty.(Tonnes)
1
COAL TYPE SEAMNO. BLOCK REMARKS
DIRTY COAL
2
3
OXIDIZE COAL
BURN COAL
4
TOTAL
OTHER
According to join Inspection within PT Thiess Contractors Indonesia and Client PT TSA - FKP Bayan Group :
Coal will be : dump / continue expose / stocking as Coal Resource / Overburden / Loose Coal
with total quantity tonnes / bcm .
Comments:
Signature
PT. Thiess Contractors Indonesia PT TSA - FKP (Bayan Group)
Title :Title :
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A. SHIFT : DAY / NIGHT DATE: _____________________
COAL LOADING & HAULING CHECKLISTCoal Loading & HaulingChecklist
COAL LOADING QTY DUMPING
SEAM (Tonnes) DIRTY TOREMARKS
CLEAN
COAL TYPEBLOCKNO
TOTAL
SEMUA JAWABAN "NO" HARUS DITINDAKLANJUTI DAN DIJELASKAN DIBAGIAN PENJELASAN (REMARKS)
COAL GETTING AREA YES NO1 Apakah Roof Batubara sudah di cleaning dengan sempurna sehingga tidak ada pengotor pada lapisan batubara?
2 Apakah proses cleaning dilakukan dengan coal bucket excavator?
3 Apakah operator excavator mengetahui / berpengalaman dalam hal melakukan pekerjaan cleaning dan coal getting?
4 Apakah batubara di gali sampai floor?
5 Apakah bagian floor dibersihkan secara sempurna sehingga tidak ada spot batubara yang masih menempel pada bagian floor?
6 Apakah pengotor / dilusi di pisahkan pada tempat tertentu?
7 Apakah tidak terjadi pengotoran batubara oleh faktor lain?
8 Apakah sistem drainase di sekitar ekpose coal cukup baik?
9 Apakah Coal Face (Permukaan batubara bagian atas) sudah dibersihkan dengan sempurna dari pengotor / OB
COAL LOADING YES NO
1 Apakah lantai permukaan loading point rata dan posisi yang benar?
2 Apakan permukaan stocking batubara sudah dibersihkan dari lumpur / air yang dapat mengotori batubara dengan
dozer atau alat lain?
3 Apakah Excavator memuat batubara dengan cara yang benar ke dalam truck?
4 Apakah pemuatan batubara mengisi penuh ke dalam bak truck dengan cara ditumpahkan rata dan tidak dipadatkan?
5 Apakah tersedia penerangan yang memadai dan di tempatkan pada tempat yang tidak menyilaukan mata operator?
6 Apakah checker batubara sudah berada di tempat dan cukup untuk beberapa loading point?
TINDAKAN PERBAIKAN
ITEM CARRIED OUT BYACTION / TINDAKAN YANG DILAKUKAN DATE COMPLETED SIGNED
CATATAN:
Semua Tindakan Yang Belum Selesai Harus Diteruskan Kepada Supervisor Selanjutnya
DIINSPEKSI OLEH (COAL SUPERVISOR) DIPERIKSA OLEH (MINING SUPERINTEDENT)
_______________________________ __________________________
Title : _______________________________ Title : __________________________
Sign : _______________________________ Sign : __________________________
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Monthly Coal Recovery &Reconciliation
LISAT COAL RECOVERY
Coal Recovery (%)
Month in Financial Year Jan‐09 Feb‐09 Mar‐09 Apr‐09 Mei‐09 Jun‐09 Jul‐09 Agust‐09 Sep‐09 Okt‐09 Nop‐09 Des‐09
Infomine (mt) 41.093 16.200
Survey (mt) 48.739 40.759 18.523
Geological Model (mt) 48.149 20.546
Variance model vs Survey 48.739‐ 7.390 2.023 ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐ ‐
, ,
Month in Financial Year Jan‐09 Feb‐09 Mar‐09 Apr‐09 Mei‐09 Jun‐09 Jul‐09 Agust‐09 Sep‐09 Okt‐09 Nop‐09 Des‐09
Weighed vs Survey ‐ 1,01 0,87 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!
Model vs Survey ‐ 1,18 1,11 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!
ecovery
Weighed vs Survey vs Model
60.000
4 1 .
0 9 3
4 8 . 7 3 9
4 8 .
1 4 9
4 0 . 7 5 9
20.000
30.000
40.000
50.000
n
t i t y ( T o n n e s )
1 6 .
2 0 0
1 8 . 5 2 3
2 0 . 5 4 6
‐
10.000
Jan‐09 Feb‐09 Mar‐09 Apr‐09 Mei‐09 Jun‐09 Jul‐09 Agust‐09 Sep‐09 Okt‐09 Nop‐09 Des‐09
Production Period
Q u
Wei ghed Survey Model
thank o
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thank you
Any Comments?
La Ode Sapta A.Sn. Geologist
Thiess Contractors Indonesia
Melak Mine Project