Results 201 to 210 of about 716,983 (302)

Characteristics Analysis and Stage Division of Class Ⅰ Gas Hydrate Deposit Developed by Vertical Well and Depressurization Based on Numerical Analysis

Energy Science &Engineering, EarlyView.
The production process can be divided into two stages according to the relationship between the gas production rate and the decomposition gas rate. The ratio of cumulative decomposition gas to cumulative gas production can be used to evaluate the contribution of the gas hydrate layer.
Nu Lu, Bo Zhang, Jian Hou, Yajie Bai, Yongge Liu   +4 more
wiley   +1 more source

A Q-learning approach to waste rock reduction in open-pit mine design based on cleaner production principles. [PDF]

Sci Rep
Badakhshan N, Bakhtavar E, Shahriar K, Khosravi H, Afraei S, Maremi A.   +5 more
europepmc   +1 more source

Safety Assessment of Geological Disposal in Japan

Shigen-to-Sozai, 2001
Kaname MIYAHARA, Yukio TACHI, Hitoshi MAKINO, Aki TAKASU, Morimasa NAITO, Hiroyuki UMEKI   +5 more
openaire   +2 more sources

GEOLOGIC DISPOSAL OF RADIOACTIVE WASTE -1983

, 1983
Geologic repositories for radioactive waste are evolving from conceptualization to the development of specific designs. Estimates of long-term hazards must be based upon quantitative predictions of environmental releases over time periods of hundreds of thousands of years and longer.
openaire   +1 more source

Geological Survey of Victoria. No. 13 : S.W., Part of Harcourt, Part of Sutton Grange [cartographic material] /

Geological map of the Elphinstone area with some cadastral details. Includes three geological notes. Relief shown by hachures.; "Printed in colors from stone at the Crown Lands Office, Melbourne".; Tooley, 1598.; Also available in an electronic version ...
Geological Survey of Victoria.
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Numerical Simulation Study on Optimization of Horizontal Sublevel Top‐Coal Caving Mining Technique for Steeply Inclined Extra‐Thick Coal Seam

Energy Science &Engineering, EarlyView.
As the sublevel height increases, the top‐coal recovery amount gradually increases, but both the top‐coal recovery rate and the thickened top‐coal recovery rate show a downward trend, and the decline in the top‐coal recovery rate is gradually increasing. The comparison indicates that the optimal sublevel height is 20 m.
Hongsheng Tu, Dingyi Hao, Wenhong Xiao, Fuhao Jiang, Shikun Xu   +4 more
wiley   +1 more source

Micro-mechanisms of temperature-dependent triaxial strength in Beishan granite and implications for high-level radioactive waste disposal. [PDF]

Sci Rep
Zeng W, Wu Y, Hu L, Li X, Huang Z, Zhao P, Lin J, Yu J.   +7 more
europepmc   +1 more source

Damage Characteristics and Stress Distribution Law of Overburden Rock in Multiple Mining of Close Coal Seams

Energy Science &Engineering, EarlyView.
This study on close coal seams shows that multi‐seam mining increases the height of the fractured zone from approximately 26 m (single upper‐seam mining) to about 49 m. When the lower seam is mined after the extraction of the upper seam, the heights of both the caved zone and the fractured zone increase by approximately two times.
Xiaoyu Wu, Lei Guo, Zedong Sun, Xiaowei Wu, Nan Zhang   +4 more
wiley   +1 more source

Transgenerational Projects and Entangled Domination: Revisiting Autonomy in Radioactive Waste Management. [PDF]

Sci Eng Ethics
Sugawara SE.
europepmc   +1 more source

Geological Survey of Victoria. No. 7 : S.E., [County of Bourke] [cartographic material] /

Geological map of the region of the village of Bulla at the top right of the map with some cadastral detail. The parish of Holden is written on the map.
Geological Survey of Victoria.
core