Results 1 to 10 of about 16,249 (265)

Leaching Behavior of As and Pb in Lead–Zinc Mining Waste Rock under Mine Drainage and Rainwater [PDF]

Toxics, 2023
At present, the pollution of arsenic (As) and lead (Pb) is becoming increasingly serious. The pollution caused by the release of As and Pb from lead–zinc mines has seriously affected the water and soil environment and threatened human health.
Ziwen Guo, Jiejie Yang, Kewei Li, Jiaxin Shi, Yulong Peng, Emmanuel Konadu Sarkodie, Bo Miao, Hongwei Liu, Xueduan Liu, Luhua Jiang   +9 more
doaj   +2 more sources

Mechanical properties and energy evolution of cemented tailings-rock powder backfill under uniaxial compression: effect of rock powder type and content [PDF]

Scientific Reports
Economic investment and mechanical characteristics represent primary limitations to the widespread adoption of cemented tailings backfill. This study introduces an approach of using quarry waste to generate rock powder, which is subsequently mixed with ...
Jiyong Zhang, Qianjin Zou, Wentao Cai, Longyue Zhang, Haoran Ge, Haigang Li   +5 more
doaj   +2 more sources

Influence of particle size distribution on fractal characteristics of waste rock backfill materials under compression

Journal of Materials Research and Technology, 2022
Broken waste rock as backfill materials is filled into the underground goaf and will encounter particle breakage under the overburden pressure. The damage degree of the crushed waste rock materials directly affects the compression properties of the ...
Meng Li, Jixiong Zhang, Yuming Guo, Hai Pu, Yifan Peng   +4 more
doaj   +1 more source

UTILIZATION OF WASTE ROCK FROM OIL SHALE MINING; pp. 321–330 [PDF]

Oil Shale, 2010
The paper deals with utilization of oil shale mining waste rock in Estonia. Crushed waste rock is utilized as an aggregate in civil engineering in frost-free environmental conditions and in road building in unbound mixtures where required resistance to ...
T. TOHVER
doaj   +1 more source

Experimental Study on Strength and Permeability Characteristics of Cemented Rock-Tailings Backfill

Frontiers in Earth Science, 2022
To study the strength and permeability characteristics of cemented tailings backfill with different cement–sand ratios and different waste rock contents, uniaxial compression strength test and permeability test were carried out respectively. The porosity
Huafu Qiu, Huafu Qiu, Fushun Zhang, Fushun Zhang, Weibo Sun, Weibo Sun, Lang Liu, Lang Liu, Yujiao Zhao, Yujiao Zhao, Chao Huan, Chao Huan   +11 more
doaj   +1 more source

Experimental study on basic engineering properties of loess improved by burnt rock

Scientific Reports, 2023
Modifying the loess foundation effectively solved the deformation and settlement of the building foundation and improved its stability. However, burnt rock-solid waste was often used as filling material and light aggregate, while there were few studies ...
Kai Chen, Dan Shao, Zhiqi Liu, Lifeng Chen, Genyi He   +4 more
doaj   +1 more source

Experimental Determination of Polycrystalline Salt Rock Thermal Conductivity, Diffusivity and Specific Heat From 20 to 240°C

Frontiers in Earth Science, 2022
Salt rock is recognized as one of the most suitable parent rocks for geological disposal of high level radioactive waste due to its low permeability, good ductility, good thermal conductivity and damage self-healing properties.
Yiwei Ren, Qiang Yuan, Yanfei Kang, Yanfei Kang, Like Wei, Zongze Li, Deyi Jiang, Huayong He, Hong Xu   +8 more
doaj   +1 more source

Influencing Factors on Strength of Waste Rock Tailing Cemented Backfill

Geofluids, 2020
Tailing cement filling is an important development direction in mine filling, as it is a green and environmentally friendly method for efficiently treating solid waste in mines.
Huafu Qiu, Fushun Zhang, Lang Liu, Dongzhuang Hou, Bingbing Tu   +4 more
doaj   +1 more source

CFD Simulation of Temperature Variation in Carboniferous Rock Strata During UCG

Journal of Sustainable Mining, 2013
The numerical simulation was based on the computational fluid dynamics formalism in order to identify the change of temperature in rock strata during underground coal gasification (UCG).
Tomasz Janoszek, Anna Sygała, Mirosława Bukowska   +2 more
doaj   +1 more source

High Temperature Versus Geomechanical Parameters of Selected Rocks – The Present State of Research

Journal of Sustainable Mining, 2013
This paper presents the current state of knowledge concerning the examination of the impact of increased temperatures on changes of geomechanical properties of rocks.
Anna Sygała, Mirosława Bukowska, Tomasz Janoszek   +2 more
doaj   +1 more source