The Changing Tendency and Association Analysis of Intelligent Coal Mines in China: A Policy Text Mining Study

Wo, Xiaofang; Li, Guichen; Sun, Yuantian; Li, Jinghua; Yang, Sen; Hao, Haoran

doi:10.3390/su141811650

Cited by 22 publications

(5 citation statements)

References 31 publications

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“…Hong et al found that the optimized scheduling of driverless electric trucks significantly reduces the total energy consumption during terminal operations, outperforming traditional diesel trucks and automated guided vehicles (AGVs) in terms of efficiency, economy, and social benefits [22]. Zhang et al presented a study on an obstacle avoidance planning method for driverless trackless rubber-tired vehicles (TRTV) in the confined spaces of deep wells [23]. However, nobody has redesigned the road widths for unmanned vehicles.…”

Section: Driverless Technologymentioning

confidence: 99%

Design of Unmanned Road Widths in Open-Pit Mines Based on Offset Reaction Times

Han,

Liu

2024

Applied Sciences

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In an effort to enhance the efficiency and safety of open-pit mines, this study explores the optimization of end slope road parameters and slope structures, specifically focusing on unmanned driving lanes. A significant aspect of the study is the development of a truck trajectory offset model, which considers the different reaction times between automated sensors and human drivers in adapting to environmental changes. To test these concepts, the study uses numerical simulations to confirm the stability of the proposed end slope designs. Using Victory West Mine No. 1 as a case study, the research determines the optimized width for unmanned driving lanes and the maximum angle for the safe steepening of end slopes. The findings indicate that the optimized unmanned lane width for NTE240 mining dump trucks is 1743 mm, allowing for a 2-degree increase in the slope angle at the south end slope. This optimization leads to a steep mining stripping volume of 3.2735 million m3 and a coal output of 2.49628 million tons, maintaining a stripping ratio of 1.31 m3/t. These results demonstrate that unmanned driving road width optimization not only ensures slope safety but also significantly boosts the economic benefits of steep mining in open-pit mines.

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Section: Driverless Technologymentioning

confidence: 99%

Design of Unmanned Road Widths in Open-Pit Mines Based on Offset Reaction Times

Han,

Liu

2024

Applied Sciences

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“…Coal mining is a crucial industry in China, with more than 90% of coal production occurring underground. Consequently, the use of underground mine cars is widespread, driven by various factors [1,2]. One significant advantage of underground mine cars is their ability to transport materials within mining sites.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of Underground Mining Vehicles Based on Regenerative Braking Energy Recovery

Liu,

Hao,

et al. 2024

Applied Sciences

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This article addresses the issue of energy waste resulting from frequent braking of underground mine cars and proposes an optimization design to address this. The proposed solution involves the installation of a regenerative braking device within the mine cars to capture and reuse the energy wasted during braking. This implementation improves the endurance capabilities of the underground mine cars. The article begins by analyzing the working characteristics of underground mine cars and proposing a design optimization method based on regenerative braking energy. Subsequently, a regenerative braking device specifically designed for underground mine cars is introduced. Finally, through physical modeling, a comparison is made between the energy consumption of the underground mine cars before and after the installation of the energy recovery system, allowing for an estimation of the actual benefits of energy recovery. The results demonstrate that the regenerative braking system successfully recovers approximately 60% of the braking energy during operation, resulting in an improvement of around 20% in the endurance capabilities of the underground mine cars. This significant enhancement contributes to the improved energy utilization efficiency of coal mine electric cars, reducing system energy consumption and lowering CO2 emissions.

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“…With the continuous development of science and technology, domestic and foreign coal mining is developing towards a safe, green, low-carbon and efficient direction [1][2][3]. In recent years, the pace of intelligent development of coal mines in China has accelerated [4].…”

Section: Introductionmentioning

confidence: 99%

Vision and Inertial Navigation Combined-Based Pose Measurement Method of Cantilever Roadheader

Wan

Zhang

et al. 2023

Sustainability

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Pose measurement of coal mine excavation equipment is an important part of roadway excavation. However, in the underground mining roadway of coal mine, there are some influencing factors such as low illumination, high dust and interference from multiple equipment, which lead to the difficulty in the position and pose measurement of roadheader with low measurement accuracy and poor stability. A combination positioning method based on machine vision and optical fiber inertial navigation is proposed to realize the position and pose measurement of roadheader and improve the accuracy and stability of the position and pose measurement. The visual measurement model of arm roadheader is established, and the optical fiber inertial navigation technology and the spatial coordinate transformation method are used. Finally, the Kalman filter fusion algorithm is used to fuse the two kinds of data to get the accurate roadheader pose data, and the inertia is compensated and corrected. Underground coal mine experiments are designed to verify the performance of the proposed method. The results show that the positioning error of the roadheader body using this method is within 40 mm, which meets the positioning accuracy requirements of roadway construction. This method compensates for the shortcomings of low accuracy and poor reliability of single vision measurement, single inertial navigation measurement and single odometer measurement.

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The Changing Tendency and Association Analysis of Intelligent Coal Mines in China: A Policy Text Mining Study

Cited by 22 publications

References 31 publications

Design of Unmanned Road Widths in Open-Pit Mines Based on Offset Reaction Times

Design of Unmanned Road Widths in Open-Pit Mines Based on Offset Reaction Times

Design Optimization of Underground Mining Vehicles Based on Regenerative Braking Energy Recovery

Vision and Inertial Navigation Combined-Based Pose Measurement Method of Cantilever Roadheader

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