11
weather conditions, and mining conditions varied for each
site. The data demonstrates the effects of LW panel min-
ing on permeabilities within the two targeted coal horizons
and the potential differences due to overburden depth.
However, lateral lithological variations in the same coal
horizon could play a role in difference in the permeability
values between the two sites. The stream valley association
at the shallow cover site produced a set of enhanced perme-
ability conditions. Therefore, applying the findings outside
of these boundaries is not advised with the data presented.
DISCLAIMER
The findings and conclusions in this paper are those of the
authors and do not necessarily represent the official posi-
tion of the National Institute for Occupational Safety
and Health (NIOSH), Centers for Disease Control and
Prevention (CDC). Mention of any company or product
does not constitute endorsement by NIOSH.
REFERENCES
[1] Commonwealth of Pennsylvania, D.o.E.P., Guidelines
for Chain Pillar Development and Longwall Mining
Adjacent to Unconventional Wells, Wells (Final
Technical Guidance Document 800–0810–004),
D.o.E. Protection, Editor. 2017, Commonwealth of
Pennsylvania: Harrisburg, PA.
[2] Commonwealth of Pennsylvania, D.o.M.a.M.I., Oil
and Gas Division, Joint Coal and Gas Committee, Gas
Well Pillar Study. 1957: Harrisburg, Pennsylvania.
p. 28.
[3] Watkins, E., et al., 2021. Assessing gas leakage poten-
tial into coal mines from shale gas well failures: inference
from field determination of strata permeability responses
to longwall-induced deformations. Natural Resources
Research. 30: p. 2347–2360.
[4] Harris, M., et al., 2023. Permeability determination
for potential interaction between shale gas wells and the
coal mine environment due to longwall-induced defor-
mations under deep cover, in Underground Ventilation.
CRC Press. p. 499–506.
[5] Rusnak, J. and Mark C., 2000. Using the point load
test to determine the uniaxial compressive strength of coal
measure rock.
[6] Mohan, G.M., Sheorey, P., and Kushwaha, A., 2001.
Numerical estimation of pillar strength in coal mines.
International Journal of Rock Mechanics and Mining
Sciences. 38(8): p. 1185–1192.
[7] Palchik, V., 2005. Localization of mining-induced hor-
izontal fractures along rock layer interfaces in overbur-
den: field measurements and prediction. Environmental
Geology. 48: p. 68–80.
[8] Su, D., et al., 2019. Longwall-induced subsurface
deformations and permeability changes–Shale gas well
casing integrity implication. in Proceedings of the 38th
International Conference on Ground Control in Mining.
Morgantown, WV: Society for Mining, Metallurgy and
Exploration.
[9] Schatzel, S., et al., 2023. Ventilation research findings
for enhanced worker safety when mining near uncon-
ventional gas wells in longwall abutment pillars, in
Underground Ventilation. CRC Press. p. 529–540.
[10] Mark, C. and Rumbaugh, G.M., 2020. Assessing
risks from mining-induced ground movements near gas
wells. International Journal of Mining Science and
Technology. 30(1): p. 11–16.
[11] Schatzel, S.J., Su.W., Zhang, P., Gangrade, V.,
Watkins, E., Dougherty, H., Van Dyke, M., Addis,
J.D., Hollerich, C., Minoski, T., 2020. Evaluation
of permeability and transport characteristics formed by
the induced fracture network around gas wells drilled
through longwall abutment pillars. in SME Annual
Meeting. Phoenix, AZ: SME.
[12] Seametrics. PT2X. 2024 [cited 2024 10/18/2024]
Pressure &Temperature with Datalogging]. Available
from: https://www.seametrics.com/product/pt2x/.
[13] Dawson, K., Istok, J.D., 2014. Aquifer testing: design
and analysis of pumping and slug tests. CRC Press.
[14] Khademian, Z., et al. 2021. Geomechanical model-
ing of mining-induced permeability: implications for
potential gas inflow from a sheared gas well. in 40th
International Conference on Ground Control in Mining.
Canonsburg, PA.
[15] Khademian, Z., Ajayi, K., and Kim, B., 2022. A case
study on longwall-induced rockmass permeability under
medium cover: Potential gas inflow implications. in
ARMA US Rock Mechanics/Geomechanics Symposium.
ARMA.
[16] Khademian, Z., et al., 2022. Rockmass permeability
induced by longwall mining under deep cover: potential
gas inflow from a sheared gas well. Mining, Metallurgy
&Exploration. 39(4): p. 1465–1473.
[17] Khademian, Z., et al. 2024. Validation of Modeled
Rockmass Permeability Against Field Measurements in a
Longwall Mine. in SME Annual Conference and Expo.
Phoenix, AZ.
weather conditions, and mining conditions varied for each
site. The data demonstrates the effects of LW panel min-
ing on permeabilities within the two targeted coal horizons
and the potential differences due to overburden depth.
However, lateral lithological variations in the same coal
horizon could play a role in difference in the permeability
values between the two sites. The stream valley association
at the shallow cover site produced a set of enhanced perme-
ability conditions. Therefore, applying the findings outside
of these boundaries is not advised with the data presented.
DISCLAIMER
The findings and conclusions in this paper are those of the
authors and do not necessarily represent the official posi-
tion of the National Institute for Occupational Safety
and Health (NIOSH), Centers for Disease Control and
Prevention (CDC). Mention of any company or product
does not constitute endorsement by NIOSH.
REFERENCES
[1] Commonwealth of Pennsylvania, D.o.E.P., Guidelines
for Chain Pillar Development and Longwall Mining
Adjacent to Unconventional Wells, Wells (Final
Technical Guidance Document 800–0810–004),
D.o.E. Protection, Editor. 2017, Commonwealth of
Pennsylvania: Harrisburg, PA.
[2] Commonwealth of Pennsylvania, D.o.M.a.M.I., Oil
and Gas Division, Joint Coal and Gas Committee, Gas
Well Pillar Study. 1957: Harrisburg, Pennsylvania.
p. 28.
[3] Watkins, E., et al., 2021. Assessing gas leakage poten-
tial into coal mines from shale gas well failures: inference
from field determination of strata permeability responses
to longwall-induced deformations. Natural Resources
Research. 30: p. 2347–2360.
[4] Harris, M., et al., 2023. Permeability determination
for potential interaction between shale gas wells and the
coal mine environment due to longwall-induced defor-
mations under deep cover, in Underground Ventilation.
CRC Press. p. 499–506.
[5] Rusnak, J. and Mark C., 2000. Using the point load
test to determine the uniaxial compressive strength of coal
measure rock.
[6] Mohan, G.M., Sheorey, P., and Kushwaha, A., 2001.
Numerical estimation of pillar strength in coal mines.
International Journal of Rock Mechanics and Mining
Sciences. 38(8): p. 1185–1192.
[7] Palchik, V., 2005. Localization of mining-induced hor-
izontal fractures along rock layer interfaces in overbur-
den: field measurements and prediction. Environmental
Geology. 48: p. 68–80.
[8] Su, D., et al., 2019. Longwall-induced subsurface
deformations and permeability changes–Shale gas well
casing integrity implication. in Proceedings of the 38th
International Conference on Ground Control in Mining.
Morgantown, WV: Society for Mining, Metallurgy and
Exploration.
[9] Schatzel, S., et al., 2023. Ventilation research findings
for enhanced worker safety when mining near uncon-
ventional gas wells in longwall abutment pillars, in
Underground Ventilation. CRC Press. p. 529–540.
[10] Mark, C. and Rumbaugh, G.M., 2020. Assessing
risks from mining-induced ground movements near gas
wells. International Journal of Mining Science and
Technology. 30(1): p. 11–16.
[11] Schatzel, S.J., Su.W., Zhang, P., Gangrade, V.,
Watkins, E., Dougherty, H., Van Dyke, M., Addis,
J.D., Hollerich, C., Minoski, T., 2020. Evaluation
of permeability and transport characteristics formed by
the induced fracture network around gas wells drilled
through longwall abutment pillars. in SME Annual
Meeting. Phoenix, AZ: SME.
[12] Seametrics. PT2X. 2024 [cited 2024 10/18/2024]
Pressure &Temperature with Datalogging]. Available
from: https://www.seametrics.com/product/pt2x/.
[13] Dawson, K., Istok, J.D., 2014. Aquifer testing: design
and analysis of pumping and slug tests. CRC Press.
[14] Khademian, Z., et al. 2021. Geomechanical model-
ing of mining-induced permeability: implications for
potential gas inflow from a sheared gas well. in 40th
International Conference on Ground Control in Mining.
Canonsburg, PA.
[15] Khademian, Z., Ajayi, K., and Kim, B., 2022. A case
study on longwall-induced rockmass permeability under
medium cover: Potential gas inflow implications. in
ARMA US Rock Mechanics/Geomechanics Symposium.
ARMA.
[16] Khademian, Z., et al., 2022. Rockmass permeability
induced by longwall mining under deep cover: potential
gas inflow from a sheared gas well. Mining, Metallurgy
&Exploration. 39(4): p. 1465–1473.
[17] Khademian, Z., et al. 2024. Validation of Modeled
Rockmass Permeability Against Field Measurements in a
Longwall Mine. in SME Annual Conference and Expo.
Phoenix, AZ.