Stability effect of water content on dominant loess dumping areas

D. H. Zhang, N. Inoue, Akihiro Hamanaka, Takashi Sasaoka, Hideki Shimada, K. Matsui

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

抄録

The first large scale dominant loess dumping area in China, South external dumping area of Antaibao open pit coal mine occurred failure on October 29, 1991. The volume of sliding mass was approximately 11 Mm3. The loss is 6 person’s lives and a huge wealth. After 1987, many large-scale open pit coal mines were established. Six open pit mining areas have loess distribution of total nine open pit mining areas. Large-scale dominant loess dumping areas are formed and will be formed in China. More effort must be implemented to control stability risks of dominant loess dumping area. A field investigation was carried out in East open pit coal mine. It is including geological overview, hydrogeological conditions, water content of waste loess, floor conditions of external dumping area, and stable problem statements. A series of experiments are conducted. Test results show that the density of waste loess increases as the water content increases. The Young’s modulus and angle of internal friction of loess decrease as the water content increases from 15% to 25%. The cohesive strength of loess decreases dramatically as the water content increases from 15% to 25%. In the working face, the water content of loess should be as low as possible to decrease the transport costs. In roads of dominant loess dumping area, the water content of waste loess should be maintaining a suitable value to promote the quality of roads. In the dominant loess dumping area, the water content should be as low as possible under the conditions that meet environmental protection and land reclaiming.

本文言語英語
ホスト出版物のタイトルLegislation, Technology and Practice of Mine Land Reclamation - Proceedings of the Beijing International Symposium Land Reclamation and Ecological Restoration, LRER 2014
編集者Zhenqi Hu
出版社CRC Press/Balkema
ページ514-549
ページ数36
ISBN(電子版)9781138027244
出版ステータス出版済み - 1月 1 2015
イベントInternational Symposium on Land Reclamation and Ecological Restoration, LRER 2014 - Beijing, 中国
継続期間: 10月 16 201410月 19 2014

出版物シリーズ

名前Legislation, Technology and Practice of Mine Land Reclamation - Proceedings of the Beijing International Symposium Land Reclamation and Ecological Restoration, LRER 2014

その他

その他International Symposium on Land Reclamation and Ecological Restoration, LRER 2014
国/地域中国
CityBeijing
Period10/16/1410/19/14

!!!All Science Journal Classification (ASJC) codes

  • 地盤工学および土木地質学
  • 環境工学
  • マネジメント、モニタリング、政策と法律
  • 汚染

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