Table S4. Supplementary Hydraulic Head Database: Minimum Possible H
w (m)
d (m)
t (m)
Minimum Possible
H (m above mined
seam)
251
225
3.15
>165
251
205
3.15
>177
251
195
3.15
>154
305
382
3.2
>112
213
165
2.3
>145
Hutcheson et al. (2000a; 2000b)
247
400
247
216
269
216
2.9
2.9
2.9
>115
>241
>96
200
127
2.55
>116
200
126
2.55
>99
200
125
2.55
>98
Unpublished
Unpublished
Unpublished
Ashton Coal Mine AEMR (2010);
Subsidence Assessment (2008)
Ashton Coal Mine AEMR (2010);
Subsidence Assessment (2008)
Ashton Coal Mine AEMR (2010);
Subsidence Assessment (2008)
200
96
2.55
>47
Ashton Coal Mine AEMR (2010);
Subsidence Assessment (2008)
Over Chain Pillars
200
95
2.55
>43
Ashton Coal Mine AEMR (2010);
Subsidence Assessment (2008)
Over Chain Pillars
240
240
295
232
3.35
3.35
>172
>110
1 SP below interface (BH19)
115
290
4.1
>105
1 SP below interface (BH18)
150
200
4.1
>104
Case Study 4, East Yorkshire (UK)
Water Inrush
135
350
2.44
>87
Singh (1986)
Case Study 8, Northern England
(UK)
Water Inrush
203
380
1.42
>42
Singh (1986)
Mine and Location
Beltana Mine, NSW Hunter
Coalfield (AUS)
Beltana Mine, NSW Hunter
Coalfield (AUS)
Beltana Mine, NSW Hunter
Coalfield (AUS)
Springvale Mine, NSW Western
Coalfield (AUS)
Beech Fork Mine, Kentucky (USA)
Mine C, NSW (AUS)
Mine C, NSW (AUS)
Mine C, NSW (AUS)
Ashton Mine, NSW Hunter
Coalfield (AUS)
Ashton Mine, NSW Hunter
Coalfield (AUS)
Ashton Mine, NSW Hunter
Coalfield (AUS)
Ashton Mine, NSW Hunter
Coalfield (AUS)
Ashton Mine, NSW Hunter
Coalfield (AUS)
Mine D, NSW (AUS)
Mine D, NSW (AUS)
Mandalong Mine, NSW Newcastle
Coalfield (AUS)
Mandalong Mine, NSW Newcastle
Coalfield (AUS)
Instrumentation
2 SPs below interface at one
location (WBD57)
6 VWPs below interface at one
location (WBR114)
2 SPs below interface at one
location (WBD55)
9 VWPs across interface at one
location (SPR39)
6 SPs below interface at one
location (Site A)
2 SPs below interface
8 VWPs below interface
5 VWPs below interface
4 VWPs and 2 SPs below interface at
one location (WML110)
3 VWPs and 1 SP below interface at
one location (WML114)
3 VWPs and 1 SP below interface at
one location (WML109)
1 VWP above interface, others at
mined seam and lower levels
(WML189)
1 VWP above interface, others at
mined seam and lower levels
(WML191)
1 SP below interface
3 VWPs below interface
Reference
Beltana Highwall Mining (2009);
Mine AEMRs (2008, 2011)
Beltana Highwall Mining (2009);
Mine AEMRs (2008, 2011)
Beltana Highwall Mining (2009);
Mine AEMRs (2008, 2011)
Centennial Angus Place Colliery Pty
Ltd (2010), Guo et al. (2007)
Unpublished
Unpublished
Centennial Mandalong Mine AEMR
(2011)
Centennial Mandalong Mine AEMR
(2011)
Comment
Over Chain Pillars
Over Chain Pillars
Abandoned open cut pit above Site
A
Over Chain Pillars
Near Panel Edge
Near Panel Edge
Water source was Magnesian
Limestone. Ocean depth unknown
(not included in d)
Ocean depth 176m: 40% (70m)
used for d (=1t/m3/2.5t/m3 x 176m)
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Mine B, NSW (AUS)
River Inrush
170
87
3.15
>82
Unpublished
Case Study 1, North Derbyshire
(UK)
Water Inrush
240
80
2
>80
Singh (1986)
Case Study 5, East Midlands (UK)
Water Inrush
255
175
1.3
>60
Singh (1986)
Mine B, NSW (AUS)
1 SP below interface
210
262
4.91
>209
Unpublished
Mine G, QLD Bown Basin (AUS)
1 SP below interface
250
154
3.5
>124
Unpublished
Port Hood, Nova Scotia (CAN)
Water Inrush
419
272
1.98
>272
Wardell and Eynon (1968)
Wistow (UK)
Wistow (UK)
Ellington (UK)
Ellington (UK)
Asfordby (UK)
Water Inrush, or unusually wet face
Water Inrush, or unusually wet face
Water Inrush, or unusually wet face
Water Inrush, or unusually wet face
Water Inrush, or unusually wet face
140
130
60
255
250
328
320
120
120
540
2.29
2.13
1.76
2.14
2.75
>85
>80
>62
>63
>90
European Commission (2012)
European Commission (2012)
European Commission (2012)
European Commission (2012)
European Commission (2012)
Sediment thickness 5m (ignored for
minimum H)
Water source was limestone
(thickness estimated as 5m)
Under saturated alluvium in valley
bottom
Pillar Extraction. Working face
probably at 45⁰ to direction of
advance (w = 296 x 2^0.5 = 419m).
Salt mine. Room and pillar with
pillar yield. Sediment thickness
131m (ignored for minimum H)
SP denotes standpipe piezometer, VWP denotes vibrating wire piezometer, w denotes void width, t denotes mined height, d denotes overburden thickness, H denotes height of desaturation, AEMR denotes Annual
Environmental Management Report. t is a representative average for the area surrounding the measurement installations that would influence the measurements. No distinction is made between ordinary and
special locations since a lower threshold is determined, and H cannot be smaller.
Retsof Salt Mine, New York (USA)
Water inrush
230
335
3.8
>204
Whyatt and Varley (2008), Kappel
et al (1998), NYGS (2005).
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