##tihuan2##At the same time, the optimal hyperparameters of PCANet model are further determined, that is, PatchSize = 3 × 3, NumFilters = 6, HistBlockSize = 6 × 2, and BlkOverLapRatio = 0. ... as the PatchSize of the PCANet recognition model of coal and gangue. 3.3.2. Selection of the NumFilters. ... The research is financially supported by …
WhatsApp: +86 18221755073
##tihuan2##This paper deals with the optimal structural design of a Biglide parallel grinder for drill grinding. A pair of spatial modules is adopted to replace the conventional parallelogram to enhance the out-of-plane stiffness of the latter. A multi-objective design optimization problem is formulated, of which the stiffness, motion/force transmission, …
WhatsApp: +86 18221755073
##tihuan2##Natural gamma ray method requires that there must be a lot of radioactive elements in coal and gangue, and the cost of sensor is high; Image recognition is greatly affected by on–site dust, so ...
WhatsApp: +86 18221755073
##tihuan2##China's total coal production in 2021 exceeded 4.13 billion tons, 52% of the world's total. Coal gangue, a solid waste of coal mining accounts for 15–20% of coal production, when directly discharged on the ground surface as waste heaps, it occupies large areas of land and cause environmental pollution. This paper summarizes the …
WhatsApp: +86 18221755073
##tihuan2##Low-energy and efficient coal gangue sorting is crucial for environmental protection. Multispectral imaging (MSI) has emerged as a promising technology in this …
WhatsApp: +86 18221755073
##tihuan2##In this comprehensive guide, we'll delve into the realm of CNC tool grinders, evaluating their essential features, comparing leading brands, and ultimately …
WhatsApp: +86 18221755073
##tihuan2##Given the proliferation of works in this fields, it is necessary to develop a systematic analysis method to summarize accumulated knowledge. In order to shed light on the possible usage of coal gangue, this review first attempts to conduct a bibliometric analysis to reflect the trend in this line of research and then focus on the utilization of …
WhatsApp: +86 18221755073
##tihuan2##The inability to identify accurately coal and gangue has been the bottleneck restricting the intellectualization of top coal caving. The difficulty of coal and gangue recognition lies on the fact that with the advance of working face, the change of coal caving space requires the relative position of the detector and coal–gangue to be …
WhatsApp: +86 18221755073
##tihuan2##According to philosopher Daniel Dennett (1995), this qualifies evolution by natural selection as "the single best idea anyone has ever had." Natural selection …
WhatsApp: +86 18221755073
##tihuan2##Radiation characteristics of natural gamma-ray from coal and gangue for recognition in top coal caving ... MSI technology is employed to collect spectral data of coal and gangue. Three optimal spectral bands are selected based on the accuracy of coal gangue recognition and spectral data correlation, and a pseudo-RGB image is …
WhatsApp: +86 18221755073
##tihuan2##The multispectral imaging technology is applied to the study of intelligent separation of coal gangue. The optimal combination band is selected by OIF, and a detection model is designed to realize the location of coal gangue. ... Mengran Zhou, Jinguo Wang, Tianyu Hu, Xixi Kong, Feng Hu, Kai Bian, Ziwei Zhu. Fast Location of Coal Gangue Based on ...
WhatsApp: +86 18221755073
##tihuan2##3.4 Parameter selection of the 1D-CNN identification model. ... for the output of the identification result of coal and gangue. 3.5 Performance of the optimal 1D-CNN recognition model of coal and gangue ... Key Projects of Natural Science Research in Anhui Universities (Nos. KJ2021A0470 and KJ2021A0471), Talent Introduction Fund of …
WhatsApp: +86 18221755073
##tihuan2##related. The density of coal gangue is lower than that of natural gravel; however, the water absorption is higher. Using 0-5 mm coal gangue as an example, compared with natural gravel, the maximum dry density of the coal gangue cement-stabilized mixture was reduced by 2.45%, and the optimal moisture content was increased by 4.7%.
WhatsApp: +86 18221755073
##tihuan2##For the traditional machine learning methods rely on manual experience and deep learning classification model depth and complex structure, resulting in poor gangue classification performance, this paper proposes a coal gangue recognition method (CNN-SVM) based on the combination of convolutional neural network (CNN) and support …
WhatsApp: +86 18221755073
##tihuan2##Gangue refers to waste rock discharged during coal mine construction, coal mining, etc 1.Excessive accumulation of coal gangue will cause serious environmental problems 2,3,4.At present, the coal ...
WhatsApp: +86 18221755073
##tihuan2##Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications. Producing concrete with coal gangue aggregate is one of the green sustainable development requirements. This paper reviews the properties and preparation methods of Chinese gangue aggregate, studies the influence of gangue …
WhatsApp: +86 18221755073
##tihuan2##The most common gangue minerals have been selected in Table 133.1, identifying them with the same symbols (abbreviations) as in Annex 1.3 (Gangue). As Table 133.1 shows, most of the gangue species are classified in only two of the Berzelius classes, namely (in approximate order of decreasing abundance and noting the main …
WhatsApp: +86 18221755073
##tihuan2##At the optimal gradation, compared to natural limestone specimen N100, the 28-day compressive strength of specimens N80B20, N58B42, N31B69, and B100 decreased by 9%, 14%, 18%, and 27%, respectively. The variation in the compressive strength among five types of specimens can be attributed to multiple factors, including …
WhatsApp: +86 18221755073
##tihuan2##To address these issues, this study proposes an improved method for detecting gangue and foreign matter in coal, utilizing a gangue selection robot with an enhanced YOLOv7 network model.
WhatsApp: +86 18221755073
##tihuan2##the natural ray coal gangue identication technology heavily relies on the immediate roof of the coal seam. As such, the roof deposition characteristics of thick and extra-thick coal seams were ...
WhatsApp: +86 18221755073
##tihuan2##During the extraction and processing of coal, a large amount of solid waste, collectively known as gangue, is produced. This gangue has a low carbon content but a high ash content, accounting for approximately 15 to 20% of the total coal yield. Before coal is used, coal and gangue must be effectively separated to reduce the gangue content in …
WhatsApp: +86 18221755073
##tihuan2##Considering that Huainan is an important coal producing area. the coal-gangue and coal blocks used in the experiment were obtained from Huainan mining area [11], and 300 coal and gangues with similar sizes were selected for spectral image acquisition.In order to improve the accuracy of detection, not only the multispectral …
WhatsApp: +86 18221755073
##tihuan2##Nearly as universally accepted is the inference that natural selection, based on the differential representation of adaptive inherited traits over time, is responsible for …
WhatsApp: +86 18221755073
##tihuan2##Mixed particle size gangue can significantly reduce the natural accumulation porosity of the specimen, thus improving its overall stability.
WhatsApp: +86 18221755073
##tihuan2##The mineral content of high alumina gangue clay is very high, and its main mineral composition is kaolinite. Kaolinite is a 1:1 type dioctahedral layered silicate mineral belonging to the triclinic crystal system, whose crystal structure (Fig. 1 a and 1b) consists of structural layers formed by joining of silica-oxygen tetrahedra and alumina-oxygen …
WhatsApp: +86 18221755073
##tihuan2##Process of filling goaf with coal gangue slurry. The process of filling goaf with coal gangue slurry is shown in Fig. 2.Specifically: the coal gangue is crushed by a multi-stage crusher and enters ...
WhatsApp: +86 18221755073
##tihuan2##Based on PGNAA technology, it can accurately and online detect the characteristic parameters of coal mines with complex components, and provide time …
WhatsApp: +86 18221755073
##tihuan2##A feature fusion based on cross-optimal selection method is proposed to keep the features with strong discrimination and eliminate the features with weak discrimination, and the relationship between fusion times and recognition accuracy is studied. ... Radiation characteristics of natural gamma-ray from coal and gangue for …
WhatsApp: +86 18221755073
##tihuan2##The layout of deep chamber for coal-gangue separation (DCCS) based on the horizon of the weak stratum can affect the stability of its surrounding rocks. First, the work summarized the main ...
WhatsApp: +86 18221755073
0086-21-58386256
Our office time Mon - Sat 10.00AM - 7.00PM Sunday CLOSED
Copyright © 2024.Con All rights reserved.sitemap