Method determination on key position of coal mine constructional backfill based on fracture characteristics of roof structure [PDF]
Backfilling mining is important for controlling strata movement and reducing surface subsidence and environmental damage. Insufficient sources of raw materials and high backfilling costs have become major bottlenecks, limiting the application of backfill
Guorui FENG +7 more
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Shuitu Baochi Xuebao目的为研究煤矸石对风沙土的改良效果及配比。方法选取神木市红柳林矿区风沙土为研究对象，将不同粒径煤矸石（<1、<0.5、<0.25 mm）按不同比例（0~100%）掺入风沙土中，测定其水力学参数，并与黄绵土进行比较以确定最佳粒径配比。随后将煤矸石按最佳粒径及配比掺入风沙土中，并复配不同比例菌剂（1%、3%、5%、7%）。在混合基质中进行为期100 d的室内苜蓿盆栽种植试验，研究不同煤矸石和菌剂复配比例对风沙土养分质量分数、微生物活性及植物生长的影响。结果风沙土中添加粒径<0.25 ...
李玫睿 +4 more
doaj
Coal gangue image recognition model based on improved U−Net and top coal caving control [PDF]
Coal gangue identification technology is a critical component for the automation of fully mechanized mining faces and represents a significant challenge within this domain.
Libao LI +5 more
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Coal gangue image recognition model based on CSPNet-YOLOv7 target detection algorithm [PDF]
The gangue recognition technology is one of the key technologies in the intelligent construction of mines. To address the problem of low accuracy of the gangue recognition model caused by low illumination and high dust environment at the working face and
Chao LIU +4 more
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Connotation, research status, and development directions of clean coal geology in China [PDF]
[Objective] The exploration and assessment of low-carbon, zero-emission, and maximized utilization of coal resources, emerge as a focus of coal geology in the 21st century.
Harold H. Schobert +6 more
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Research progress on the treatment of acid coal mine drainage [PDF]
Acid coal mine drainage has emerged as one of the most challenging environmental problems in the coal industry because of its large output, wide pollution range, long duration, and unstable water quality and quantity.
Bingjian LIU +6 more
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Precise intelligent recognition method and application of coal-power-chemical industry sites characteristics in Yellow River Basin [PDF]
The Yellow River Basin is an energy basin that has the dual responsibility of ecological environment governance and economic and social development. The precise and intelligent recognition of the categories, numbers and characteristics of coal-related ...
Feng LIU +6 more
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Coal mine conveyor belt foreign object detection based on feature enhancement and Transformer [PDF]
Conveyor belt is one of the most important transportation equipment in underground coal mines. Anchor rod, channel steel, large gangue, and other foreign objects that are mixed with the conveyor belt during conveying operations cause the belt to tear ...
Han GAO +5 more
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Research on step-by-step visual servo control system of anchor drilling robot [PDF]
The insufficient automation and intelligentization of coal mine roadway support equipment has severely hindered the improvement of roadway formation efficiency, emerging as one of the critical factors contributing to the imbalance of excavation and ...
Chenhui TIAN +6 more
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Value-added utilization of pulverized fuel ash as construction materials: State-of-the-art technologies and future prospects [PDF]
Pulverized fuel ash (PFA) is a by-product from coal-fired power plants. The generation of PFA is huge and increases yearly. A large amount of untreated PFA is harmful to the environment, and it is also a waste of resources.
Lei WANG +6 more
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