Results 21 to 30 of about 16,888 (165)

Multi-scale interfacial mechanisms of Pb immobilization in contaminated soil using phosphoric acid-activated coal gangue-electrolytic manganese residue geopolymers

Journal of Rock Mechanics and Geotechnical Engineering
The accumulation of contaminated soils and solid waste stockpiles has led to significant resource wastage and environmental pollution. This study investigates a novel solidification/stabilization (S/S) curing agent, named ECPG, synthesized from ...
Wei Zhang, Lei Lang, Zhen Qi, Ping Wang, Qiang Xue, Fangqin Cheng, Jiangshan Li   +6 more
doaj   +1 more source

Effect of Cyclic Lateral Loading on the Compaction Behaviour of Waste Rock Backfill Materials in Coal Mines

Energies, 2018
Crushed waste rock (CWR) can be used as backfill for goafs allowing disposal of solid waste and control of surface subsidence. Waste rocks for backfilling (WRBs) have a certain density before use if cyclic lateral loads are applied to CWRs, therefore, by
Meng Li, Jixiong Zhang, Baifu An, Deon M. Germain, Qianqian Xu   +4 more
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Anisotropic thermal properties of an argillaceous rock under elevated temperatures and external load conditions

Case Studies in Thermal Engineering, 2023
The design and long-term safety of geological repositories for high-level radioactive waste (HLW) are dependent on the precise determination of the thermophysical parameters of mudstone.
Hongdan Yu, Chen Lu, Wei Liu, Weizhong Chen, Honghui Li, Jiawei Huang   +5 more
doaj   +1 more source

Application of biophosphates in geo-environmental engineering: An overview

Biogeotechnics
Geo-environmental engineering is concerned with the contamination remediation, soil reinforcement, and ecological sustainability of problematic soil matrix, including landfilled soils, contaminated soils, sludges, and solid wastes.
Jiangshan Li, Lijun Han, Qiang Xue
doaj   +1 more source

Grain size distribution of waste rock masses of Kuzbass coal strip mines

Горные науки и технологии, 2021
Grain size distribution as a structural characteristic of waste rock and bulk masses in the course of mining and construction works acquires quantitative values in the process of rock blasting and hauling of rock mass.
Sergey O. Markov, Elena V. Murko, Fedor S. Nepsha   +2 more
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Experimental study on deformation and failure of cemented filling body in open-pit end slope under different loading rates

Meikuang Anquan, 2022
In order to reveal the influence of loading rate on the deformation and failure of cemented waste rock filling body, uniaxial compression tests of cemented waste rock filling body under five groups of loading rates were carried out, and the changes of ...
LI Qiang, CHEN Yanlong, XU Kun, LYU Haoyan, XIE Qihang, CHEN Yuanguang, GU Jun   +6 more
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Recycling Process of Copper and Cobalt Waste Rock in the Democratic Republic of the Congo

Kuangchan zonghe liyong
The copper grade of the waste rock in the Sicomines copper-cobalt mining area in Congo (DRC) is 1.01%, and the cobalt grade is 0.045%, which has the recycling value. However, the waste rock has problems of high oxidation rate and severe mudding.
Jianyun YAO, Lei SUN, Xinghai CHEN, Hongjie WANG, Feng JIANG, Qingqing WANG   +5 more
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Reasearch on Optimum Mix Proportion Waste Rock-tailings Backfill Materials Based on Orthogonal Tests

Kuangchan zonghe liyong, 2022
To improve the problem of solid waste in phosphate mines, the research on the optimum mix ratio for cemented filling experiment of waste rock and phosphorus tailings was studied by orthogonal tests.
Junjie Song, Weizhong Zhang, Menglai Wang, Qinli He, Qinrong Kang   +4 more
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The influence of tailings concentration and waste rock medium length on horizontal seepage deformation

Frontiers in Earth Science
The technique of storing tailings with a waste rock embankment network integrates the high waste dumping site and high tailings pond engineering into one, effectively reducing the construction footprint.
Mingqiang Sheng, Min Ouyang, Jiayu Xu, Sijun Wang, Zhicong Lei, Xinxin Liu   +5 more
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A black‐box automated approach to calibrate numerical simulations and optimize cover design: Application to a flow control layer constructed on an experimental waste rock pile

Vadose Zone Journal, 2021
Mining operations often produce large volumes of waste rock to access economically valuable mineralized zones. Waste rock is usually stored in surface piles, the construction and reclamation of which represent a challenge for the industry. A flow control
Tom Crouzal, Thomas Pabst
doaj   +1 more source