Classification of coal gangue pile vegetation based on UAV remote sensing [PDF]
, 2023 The accurate classification of vegetation species is the basis for the evaluation of vegetation restoration effect of coal gangue pile. In this paper, the visible image of coal gangue pile in different seasons was obtained by UAV remote sensing ...
Mengying RUAN +4 more
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城市建设理论研究—建筑结构, 2022 论文针对煤矸石大量堆积占用土地、污染环境等问题，制备了水泥稳定煤矸石-碎石路面基层混合料，进行了击实试验、无侧限抗压强度试验和劈裂强度试验。试验结果表明：随着煤矸石替代率的增加，试件的最佳含水量增大，最大干密度降低，混合料的强度呈减小趋势，表明煤矸石的掺入对混合料的无侧限抗压强度和劈裂强度有不利影响。随着养生龄期的延长和水泥掺量的增大，混合料的强度呈增长趋势。7d龄期时，水泥掺量为5%，煤矸石替代率为50%时，混合料的无侧限抗压强度达到4.81MPa，满足中国二级及二级以下公路的技术要求。根据试验结果 ...
赵 建国
semanticscholar +1 more source
Preparation of activated carbon-mesoporous silica composites from coal gangue and phase transformation during its preparation [PDF]
, 2023 Coal gangue, as a mixture of carbon, silicon and aluminum, can be used for the preparation of composite materials. It shows a good prospect as the preparation of composite materials can avoid the difficulties of element separation and impurity ...
Chaolu WEN +5 more
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Determination of Rare Earth Elements in Coal-related Samples by Inductively Coupled Plasma-Mass Spectrometry with Acid Dissolution [PDF]
, 2023 BACKGROUNDCoal and coal-bearing rock series can enrich beneficial elements such as rare earth under specific geological conditions, forming coal-related key metal deposits.
Hongbin SUN +6 more
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Experimental study on microwave propagation characteristics of different coal-gangue mixtures [PDF]
, 2023 The problem of coal-gangue identification is one of the technical problems that have not been effectively solved for a long time in the coal industry. By analyzing the characteristics and limitations of existing coal-gangue identification methods, the ...
Dong WEI +5 more
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Soil carbon dynamic characteristics of coal gangue-filled reclaimed cropland and forest land under time series [PDF]
, 2023 In order to clarify the intrinsic mechanism between soil quality and soil carbon cycling after reclamation and to reveal the characteristic patterns of carbon dynamics of reclaimed soils under time series, the cultivated soils of 3, 6, 9 and 12 a ...
Junfeng QU +3 more
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Analysis of water synergy benefits of coal de-capacity in China [PDF]
, 2023 The closure/withdrawal of mines, as one of the important measures to implement the State Council’s “Opinions on supporting the coal industries to resolve excess production capacity and achieve destructive development”, and is of great significance to the
Dong JIANG +3 more
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生态环境与保护, 2019 本文针对选矿废渣煤矸石烧结保温砖技术,结合理论理论实践,在简要阐述选矿废渣煤矸石特性的基础上,分析了选矿废渣煤矸石保温砖的影响,并提出选矿废渣煤矸石烧结保温砖技术的具体应用。分析结果表明,选矿废渣煤矸石来烧结保温砖,既能缓减生态环境污染,又能实现二次利用的发展理念,值得大范围推广应用。
晓玲 杨
semanticscholar +1 more source
Study on the influence mechanism of calcination time on cementitious activity of coal gangue-based grouting material [PDF]
In order to improve the activity of coal gangue as a key cementitious component in grouting materials, this study investigated coal gangue calcined at different durations under 800 °C.
Boqiang WU +6 more
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Shuitu Baochi Xuebao, 2007 以山东某矿区为例,通过淋溶模拟实验,研究了煤矸石中重金属的淋溶规律,并探讨了煤矸石山周边土壤重金属污染特征.结果表明:风化矸石淋滤液中的Zn、Pb、Cr和Cu浓度较高,并很快稳定;新鲜矸石在淋溶初期检出Zn,其它重金属元素没有检出;风化矸石淋滤液中重金属的含量要高于未风化矸石.矸石山周边表层土壤中的Zn、pb、Cr和Cu较高,且浓度高出矸石淋溶液许多倍,表明煤矸石中重金属淋滤具有长期性,矿区土壤对重金属具有迁移性和富集性.表层土壤重金属含量随着距煤矸石堆的距离增加而呈明显的下降趋势 ...
张明亮, 王海霞
doaj +2 more sources