An investigation on effect of underground mining of extra-thick coal seams on large open-pit slope stability

Nay Zarlin, Takashi Sasaoka, Hideki Shimada, K. Matsui

研究成果: Contribution to conferencePaper査読

抄録

The paper discusses preliminary study on the effect of underground mining on large open pit slope stability in Mae Moh coalfield in Thailand. Mae Moh mine is currently operated as open pit mine and it is the largest open pit coal mine in Thailand. In the near future, however, the final pit limit of the mine will be reached and underground mining will be developedfrom the final highwall in the depth of 400-600 from the surface. However, due to the adverse geological and geotechnical conditions, such as weak mechanical properties of rock, extra-thickness (20-30 m) of coal seams, and huge final pit slope,various studies for underground mine are being carried out at the present. In this study, it was investigated forappropriate distance between open pit wall and underground mine, response of pit slope in different extent of rib pillars, which is measured horizontally minimum distance from the open pit wall to underground mine,and panels, and different mining height, and the interaction between open pit slope and underground working. The investigation was conducted by means of numerical techniques using three dimensional finite difference code FLAC3D.

本文言語英語
ページ1322-1329
ページ数8
出版ステータス出版済み - 1 1 2012
イベント7th Asian Rock Mechanics Symposium, ARMS 2012 - Seoul, 大韓民国
継続期間: 10 15 201210 19 2012

その他

その他7th Asian Rock Mechanics Symposium, ARMS 2012
Country大韓民国
CitySeoul
Period10/15/1210/19/12

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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