8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 1/39

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

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 2/39

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 

.

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 3/39

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 

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 4/39

Coal Model Lisat Pit

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 5/39

Coal Model Lisat Pit

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 6/39

S2

S2

S1

S2 SC

SE

SF

S1

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 7/39

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 8/39

Coal on Lisat  Pit  

Seam D

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 9/39

Coal on Lisat  Pit  

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 10/39

Coal on Lisat  Pit  

Parting,carbonaceousmaterial

Clay band,sometime thick orthinning, or be lostin other place

Coal with clay band structure

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 11/39

Coal on Lisat  Pit  

Batubara den an struktur men er ih susunan tidak teratur

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 12/39

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.

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 13/39

Exposing Coal 

Bright Coal Seam  all seam on Lisat 

.Cara expose yang benar, buka coal line terlebih dahulu

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 14/39

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.

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 15/39

Exposing Coal 

Do not dro OB on the to of coal.

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 16/39

Exposing Coal 

Leave OB / interburden minimum thick 10 cm.

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 17/39

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 18/39

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

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 19/39

Exposing Coal 

Material top soil berjatuhan karena ekspos yang salah, dapat menyebabkan kontaminasi batubara 

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 20/39

Exposing Coal 

Coal contaminate by mud on melamuk pit. It must be expose the coal line / cropline first 

before exposing coal, no bundwall

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 21/39

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

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 22/39

Exposing Coal 

1.00 m

Good expose, minimum interburden 10 cm left on roof  coal, top coal face with space 1.00 meters.

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 23/39

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

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 24/39

Coal Getting 

Bund Wall 

Sisakanminimal 10 cm

Sisakan Floor minimum 10 cm jika lapisan batubara sulit untuk di stock

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 25/39

Cleaning Coal 

Always use coal bucket excavator, always use Hitachi 330 reach from top to 

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 26/39

Cleaning Coal 

Clean coal, nice expose, ready to mine out

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 27/39

Cleaning coal 

Clay on ROM, please avoid this problem before the penalty from client.

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 28/39

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

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 29/39

Stocking Coal 

Stock coal along expose coal if  possible, reach from top to bottom.

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 30/39

Stocking Coal 

Good stocking, stocking height minimum 2  – 3 m for better cycle time.

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 31/39

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 32/39

Coal Mined Out  

Hanging Coal??

Clean up spot coal on floor to maximize coal recovery

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 33/39

Coal Mined Out  

Spot coal on Floor

Jangan meninggalkan floor dengan keadaan seperti dalam gambar, keep all coal 

body mined out.

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 34/39

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

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 35/39

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)

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 36/39

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 :

 

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 37/39

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 : __________________________  

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 38/39

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

8/6/2019 Guide to Coal Extraction Mining

http://slidepdf.com/reader/full/guide-to-coal-extraction-mining 39/39

thank you

Any Comments?

La Ode Sapta A.Sn. Geologist

Thiess Contractors Indonesia

Melak Mine Project