UNDERGROUND COAL MINING TRAINING
IN PT. GERBANG DAYA MANDIRIBY :WIRA KISMANTOROJAKARTA, JANUARY 23rd , 2020

COMPANY PROFILENo.

DETAILDESCRIPTION

121Company Name

2

Number of SK IUP OP PMA

3

WIUP / WIUPK Code4

Commodity

5

Period of WIUP/WIUPK

62020 Production Plan

456,500 MT

7a.

OP: 400,000 MT, UG: 56,500 MT

8b. Processing

456,500 MT

9Area of Production Operation
PermitForest Area

10Coal

PT. GERBANG DAYA MANDIRI
3216 K / 30 / MEM / 2015
KTN20102794 OPCoal
September 13, 2006 to September 13, 2026HKHLHP

Non Forest
Area (Ha)0001758

Total Area

1758 Ha

Project Area (Active)

In the WIUP: 708.41 Ha, outside WIUP: 30.42Ha. Total: 738.83 Ha.
2WORK LOCATION Administratively,PT.
Gerbang
Daya
Mandiri(GDM) is located in Bangun
Rejo Village, Manunggal
Jaya Village and Karang
Tunggal Village, Tenggarong
Seberang
District,
Kutai
Kartanegara
Regency,
Kalimantan Province.
 Jakarta - Samarinda Tenggarong Seberang The travel time is ± 2 hours

3

UNDERGROUND COAL MINING TRAININGPURPOSETo implement an Advanced Training Program for Underground Coal
Mining Employees to Support the Mechanized Mining Plan forUnderground Coal in PT. Gerbang Daya Mandiri

OBJECTIVE
To improve the Knowledge and Capability of Employees of PT. Gerbang
Daya Mandiri in Underground Coal Mining, and its Production Operations
can be Safe, Effective, Efficient and Environmentally Friendly.

REALIZATION
The implementation of Underground Coal Mining Technology Training atPT. Gerbang Daya Mandiri and the Kushiro Coal Mine, is a collaboration
program between the Indonesian government and the Japanese
government through a coal mining technology training program (TheTraining Project of Coal Mining Technology).
4PROGRESS OF THE UNDERGROUND MINE IN PT GDM
3500
3,203.44
3000

2500

PROGRESS (M)2,235.87

2000

Progress
Kumulatif

1,774.68
1500

1,015.23

1000

967.57759.45500563.31451.92327.88461.19124.0402014

2015

2016

2017

2018

2019

TAHUN

5

Index map

Index map

PROGRESS MAP OF
UNDERGROUND MINE
Area: 1,758 Ha

mapping location

Mapping location

Scale
Village
District
Regency
Province
LEGEND:
Progress of UG Production Year 2014(124.04 meter)
Progress of UG Production Year 2015
(327.88 meter)
Progress of UG Production Year 2016
(563.31 meter)
Progress of UG Production Year 2017(759.45 meter)
Progress of UG Production Year 2018(461.19 meter)
Progress of UG Production Jan-Mar2019(228.403 meter)
Progress of UG Production Apr-Jun
2019(147.38 meter)
Progress of UG Production Jul-Sept2019(326.77 meter)
Progress of UG Production Oct-Dec
2019(265.02 meter)

2019
MonthAlley Progress Distance

Quarter

Total Progress January –March(1st Quarter)
Total Progress April – June
(2nd Quarter)
Total Progress July –September(3rd Quarter)
Total Progress October –December(4th Quarter)

Total progress 2019

SourceRESUME TOTAL DISTANCE OF PRODUCTION PROGRESS
Total UG
Total UG production Progressproduction Progressuntil Dec 2019 – Longwall 1
Total UG production Progressuntil Dec 2019 – South Portal
Total UG production Progressuntil Dec 2019 – North Portal

Total UG production Progress until
Dec 2019

Description

Total UG
production Progress

Total UG
production Progress

Total UG
production Progress

Total UG
production Progress

Total UG
production Progress

NameSign

Date

Drawn byApproved by

Total UG production Progress until
Dec 2019

Total UG
production Progress

Map sheet

6

TRAINING PROGRAMSTRAINING MATERIALS BY MMR
1. Mining Technology
o Mining Progress and Alley Maintenance Technology
o Survey and Measurement Technology
o Underground Mining Design Technology
2. Transportation Technology
o Transportation and Hoist Engine Control Technology
3. Machinery Technology
o Technology of Drainage Control, Care and Maintenance of EachType of Machine
4. Electricity Technology• Technology for Controlling and Maintenance of Every Electrical
Equipment in the Mine Surface and Alley
5. Ventilation Technology
6. Safetyo Emergency response, first aid and rescue

TRAINING MATERIALS BY KCM
Mining & Safety Management
1. Mine planning
2. Ventilation Technology
3. Drilling Technology
4. Safety Oversight
5. Hazard Prevention
6. Mining Technology (roadway & longwall)
7. Machinery Technology
8. Electricity Technology
9. Gas Release Technology
10. Preparation Technology8

IMPLEMENTATION OF TRAINING
Project Implementation Time
1. Training by MMR for fiscal year 2018 = 1,196 Employees
2. Training by KCM:
• November 21 to December 29, 2017 = 1 employee (312 hours)• November 20 to December 28, 2018 = 1 employee (312 hours)• November 19 to December 27, 2019 = 1 employee (312 hours)

Location of Training
1. Underground Mining Location of PT. Gerbang Daya Mandiri inTenggarong Seberang District, Kutai Kartanegara Regency
2. Location of the Kushiro Coal Mine Underground Mine in Kushiro,
Hokaido, JapanAPPLICATION OF MINING SAFETY
1. Prevention of coal gas and dust explosiona) Methane Gas
Checking the volume of air and methane gas by the safety team every
shift• Installation of CH4 gas detector at a specific location that is connected tothe monitor panel system• Interlock system (setting 1.0% CH4), if CH4 is detected more than 1.0%,
the electricity will go out automaticallyb) Coal dust•Spraying water during progress•
Spraying water on material transportation equipment such as
conveyor belts and chain conveyors•
Cleansing accumulated coal dust•
Limestone sowing on the in-seam roadwayc) Restrictions on welding / using fire in underground mines. If it is reallyurgent, Hot Permit is required.
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2. Prevention of Spontaneous Combustiona) Monitoring•

Installation of CO gas detectors at specific locations connected to the monitor
panel system•

Checking during every shift by the Safety team with a multigas detectorb) The Safety Team checks for signs of spontaneous combustion such as coal / rocksweating, rising temperatures, smoke, odors in several locations and paying special
attention to in-seam areasc) Perform injection, blockage and / or grouting
3. Mine Fire Preventiona) Restrictions on welding / using fire in underground mines. If it is really urgent, Hot
Permit is required.
b) Installation of Safety devices•Main Hoist Room: Over Current Relay Installation, APAR•

Electric Room: Installation of Over Current Relay, Ground Relay, APAR

•Belt Conveyor: Installation of Slip relay, Shute relay, Snaking detector, smokedetector, Emergency stop, Over load relay and Automatic APARc) Methane Gas Checking

11

4. Prevention of flooding in underground mines• Installation of an automatic main pump with a pipeline connectedfrom the pump tub in the alley to a pool on the surface byconsidering the volume of water and anticipating if there is a rapid
increase in the volume of water• Installation of a backup pump, if the main pump is damaged toensure the pumping system continues to run smoothly• Water level monitoring and control in the pump body on themonitor panel system
5. Monitoring displacement• Installation of rock deformation monitoring tools, namely tell taleand extensometer in a predetermined area. Measurements arecarried out every day by the Engineering division

12THE FACILITIESSouth Slope

North Slope

Main Fan 60 Hp ( 30 Hp )Hoist 50 Hp

13

Mining and Ventilation Technology
Mining & Ventilation Theory

Heading

Survey & Alley Design Theory

Polygon Measurement

MMR

14

Transportation, Electrical andMachinery Technology

MMR

15

First Aid and Safety in Mining

MMR

16

Mining & Safety Management

KCM

17

Explosion & Fire Prevention
Water Sprayer during Progress

PT. GDM

Grouting & Injection

Limestone Sowing

Gas Checking

Temperature Checking

18

Safety DeviceInterlock System (CH4)

Belt Snaking

PT. GDM
Slip Detector

Smoke Sensor

Emergency stop

Automatic Fire Extinguisher

19

Monitor Panel

PT. GDM

20

Monitoring Displacement
PT. GDM

Tell Tale

Extensometer

ETM02 Extometer

21

Conclusion• The Underground Coal Mining Technology Training conducted by MMR inPT. Gerbang Daya Mandiri and KCM in Kushiro Hokkaido, Japan has
been well implemented.
• PT Gerbang Daya Mandiri's Underground Mining employees have gained
experience and knowledge from Trainers of MMR and KCM which will beapplied in PT. GDM• PT. Gerbang Daya Mandiri has finished building the 1st panel roadway tailgate and the 1st main gate, in preparation for coal production in the first
longwall panel and is working to prevent danger in the undergroundmine.
• The Progress of Advanced Excavation Work at PT. Gerbang Daya
Mandiri is due to the increased ability of employees in excavation
operations, the ability to maintain and repair work equipment andincreased understanding of underground coal mining safety.
• Coal mining with the Longwall system at PT. Gerbang Daya Mandiri,requires an improvement of the ability of employees in the fields ofmining engineering, machinery, electricity, safety and further planning,
especially as coal production will begin in the longwall panel.
22Thank you
For the implementation of Technology and Safety training in the Underground
Mine, PT. Gerbang Daya Mandiri would like to thank profusely :• The Government of the Republic of Indonesia• The Japanese government• The Ministry of Energy and Mineral Resources• The Center for Development of Geological, Mineral and Coal HumanResources• Japan Oil, Gas and Metal National Corporation (JOGMEC)• Mitsui Matsushima Resources Co., Ltd. (MMR)• Kushiro Coal Mine (KCM)• MMR & KCM Training Team• Translators/Interpreters.
• Along with ladies and gentlemen and other parties which cannot bementioned individually.
23

THANK YOU

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