1. Central Mining Institute
Department of Geology and Geophysics
COmplex Mining EXploitation - optimizing mine design and reducing the impact on human environment 
COMEX
WP1: Exploitation with overlying old shallow mines
or open pit mines
COMEX meeting October 2013, Nottingham 1

2. Geophysical measurements started in July 2013 and included:
Central Mining Institute
Department of Geology and Geophysics
Task 1.3: Field measurements at chosen sites and verification
of developed methods.
Geophysical measurements started in July 2013 and included:
GPR measurements on selected profiles
gravity survey in regular grid of points
seismic refraction and MASW on selected profiles
TEM soundings in points on selected profiles
seismometric measurements of surface vibration
underground mining seismic network
subsidence measurements
COMEX meeting October 2013, Nottingham 2

3. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Bobrek Mine
Karb district
COMEX meeting October 2013, Nottingham 3

4. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
deep coal exploitation
in seam 503
COMEX meeting October 2013, Nottingham 4

5. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
…and in seam 504
COMEX meeting October 2013, Nottingham 5

6. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
The area for numerical modeling Bobrek Mine - Karb district
COMEX meeting October 2013, Nottingham 6

7. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
First stage of GPR - Ground-Penetrating Radar - survey
COMEX meeting October 2013, Nottingham 7

8. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Example of GPR profile on Bobrek - Karb
COMEX meeting October 2013, Nottingham 8

9. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Second stage of GPR survey
COMEX meeting October 2013, Nottingham 9

10. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Seismic survey on Bobrek - Karb
COMEX meeting October 2013, Nottingham 10

11. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
MASW profile
no 1
refraction profile
no 1
COMEX meeting October 2013, Nottingham 11

12. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
MASW profile
no 2
refraction profile
no 2
COMEX meeting October 2013, Nottingham 12

13. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
TEM – Transient Electromagnetic Method – survey
on Bobrek - Karb
COMEX meeting October 2013, Nottingham 13

14. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Results of TEM surveys on Bobrek - Karb
COMEX meeting October 2013, Nottingham 14

15. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Gravity surveys on Bobrek - Karb
COMEX meeting October 2013, Nottingham 15

16. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Bouger anomaly map on Bobrek - Karb
COMEX meeting October 2013, Nottingham 16

17. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Monitoring of surface vibrations
7 surface stations within a distance of 4km
COMEX meeting October 2013, Nottingham 17

18. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Underground seismic network
26 geophone stations
(some of them 3-components)
COMEX meeting October 2013, Nottingham 18

19. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Task 1.1: Developing combined techniques to assess the
effects of mine exploitation on overlying old
shallow mines and in open pit mines.
Within the confines of this task
Geocontrol will make numerical modeling
on the basis of the geological model
All the information from geophysics surveys will be used
for building the near-surface part of the model
Deep geological building comes from archived data
COMEX meeting October 2013, Nottingham 19

20. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
COMEX meeting October 2013, Nottingham 20

21. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
COMEX meeting October 2013, Nottingham 21

22. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Map of subsidence on Bobrek - Karb
The measured subsidence may be compared with modeling results
COMEX meeting October 2013, Nottingham 22

23. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Task 1.2: Study of the influence of strong seismic events
induced by mining on formation of sinkholes and
cracks.
In this task we will conduct numerical modelling with dynamic loads in Plaxis
The recordings of surface vibrations will be added to the static model
Model will include geological formations to the depth of old ore exploitation
COMEX meeting October 2013, Nottingham 23

24. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Draft version of shallow model on Bobrek - Karb
Example of surface vibrations recording
PGA [mm/s2]
COMEX meeting October 2013, Nottingham 24

25. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
Example of total displacements calculated for Piaskowy shaft
COMEX meeting October 2013, Nottingham 25

26. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
vibrations added to model
vibrations calculated
on surface (blue)
on building (red)
COMEX meeting October 2013, Nottingham 26

27. COMEX meeting 23-24 October 2013, Nottingham
Central Mining Institute
Department of Geology and Geophysics
THANK YOU
COMEX meeting October 2013, Nottingham