Proposal for the methods to characterize fossil seawater

Mahara, Yasunori; Nakata, Eiji; Ooyama, Takahiro; Miyakawa, Kimio; Igarashi, Toshifumi; Ichihara, Yoshihisa; Matsumoto, Hiroyuki

doi:10.5917/jagh1987.48.17

Cited by 12 publications

(2 citation statements)

References 13 publications

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“…Thus, it is important to clarify the processes of generating AMD. There have been a variety of studies of AMD monitoring and characterization in not only Japan (e.g., [22][23][24]) but also other countries [25][26][27][28][29][30][31][32][33][34]. Some studies pointed out that groundwater flow patterns in and around mines should be evaluated to purpose countermeasures against AMD reduction.…”

Section: Introductionmentioning

confidence: 99%

Effects of Backfilling Excavated Underground Space on Reducing Acid Mine Drainage in an Abandoned Mine

et al. 2020

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Three-dimensional groundwater flow around an abandoned mine was simulated to evaluate the effects of backfilling the excavated underground space of the mine on reducing the acid mine drainage (AMD). The conceptual model of the groundwater flow consists of not only variable geological formations but also vertical shafts, horizontal drifts, and the other excavated underground space. The steady-state groundwater flow in both days with high and little rainfall was calculated to calibrate the model. The calculated groundwater levels and flow rate of the AMD agreed with the measured ones by calibrating the hydraulic conductivity of the host rock, which was sensitive to groundwater flow in the mine. This validated model was applied to predict the flow rate of the AMD when backfilling the excavated underground space. The results showed that the flow rate of the AMD decreased by 5% to 30%. This indicates that backfilling the excavated space is one of the effective methods to reduce AMD of abandoned mines.

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Section: Introductionmentioning

confidence: 99%

Effects of Backfilling Excavated Underground Space on Reducing Acid Mine Drainage in an Abandoned Mine

et al. 2020

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“…Therefore, data recorded by Taiheiyo Coal Mine are also presented. The water flowing into Taiheiyo Coal Mine was not seawater, but was fossil water from holes drilled in Cretaceous rock for water drainage and groundwater from the land 4 . The water flowing into Kushiro Coal Mine is only groundwater from the land.…”

Section: Introductionmentioning

confidence: 99%

Water drainage from Kushiro Coal Mine decreased on the day of all M ≥ 7.5 earthquakes and increased thereafter

Fujii

Ichihara

Matsumoto

et al. 2018

Sci Rep

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The amount of water drainage from Kushiro Coal Mine in Hokkaido, Japan decreased on the day of all M ≥ 7.5 earthquakes with epicenters within 300 km of the mine during the monitoring period and increased after these earthquakes. This is a valuable finding which would give us a clue to understand pre- and post-seismic rockmass behaviors and contribute for progress in earthquake prediction in future.

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Formation of coalbed methane and water-dissolved gas in Kushiro Coal Mine, Japan, based on isotopic compositions of gas, groundwater, and calcite

Tamamura

Murakami

Ueno

et al. 2020

International Journal of Coal Geology

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Proposal for the methods to characterize fossil seawater

Cited by 12 publications

References 13 publications

Effects of Backfilling Excavated Underground Space on Reducing Acid Mine Drainage in an Abandoned Mine

Effects of Backfilling Excavated Underground Space on Reducing Acid Mine Drainage in an Abandoned Mine

Water drainage from Kushiro Coal Mine decreased on the day of all M ≥ 7.5 earthquakes and increased thereafter

Formation of coalbed methane and water-dissolved gas in Kushiro Coal Mine, Japan, based on isotopic compositions of gas, groundwater, and calcite

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