Modeling and Simulation of Coal Loading by Cutting Drum in Flat Seams

Gospodarczyk, P.

doi:10.1515/amsc-2016-0027

Cited by 22 publications

(16 citation statements)

References 6 publications

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“…With the improvement of computer performance and numerical analysis software, the numerical model has dominated in coal cutting research with lower cost and higher efficiency [14]. In addition, the accuracy of results obtained from the simulation method has been verified in a previous study [15]. Pijush Samui [16] studied the cutting performance under different cutting tools, cutting angles, cutting depths, and velocities with the finite element method, and the results showed that these mentioned parameters affect the cutting efficiency significantly.…”

Section: Introductionmentioning

confidence: 88%

Research of Response Difference on Coal Cutting Load under Different Cutting Parameters

Wan¹,

Jiang²,

Gao³

et al. 2019

SV-JME

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Cutting performance is always an important direction in coal research, and it is related to different structural and working parameters. However, most references tend to judge the effectiveness of optimizations with a mean value method while not taking the randomness of load into consideration. Based on this, the paper provides a method to judge the effectiveness of optimizations based on stochastic load fluctuations. Before providing the method, the shearer drum is established, and cutting performance is studied under a different number of conical picks, mounting angles, and cutting positions. To make judgments of optimization effectiveness, we find that only when the "fluctuation by structure" is larger than "fluctuation by randomness" can we make sure that the optimization is valid. Results indicate that the optimization of cutting position variations on cutting performance is invalid. In addition, the order of impact on cutting performance from strong to weak is the number of conical picks, the mounting angles, and cutting positions. The present paper provides a new idea for judging of the effectiveness of structure optimizations from the perspective of load randomness, and it is conductive to enrich related research on coal cutting.

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Section: Introductionmentioning

confidence: 88%

Research of Response Difference on Coal Cutting Load under Different Cutting Parameters

Wan¹,

Jiang²,

Gao³

et al. 2019

SV-JME

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“…The The productivity of the drum shearer was calculated with using (5). All experiments were carried out under the equal conditions of the movement of the drum shearer SL-500/1 to a certain depth into the coal seam in Ilevsky Mine in Kuznetsk Coal Basin.…”

Section: The Simulation Modelmentioning

confidence: 99%

Comparison of the Efficiency of Various Flow Charts of Longwall Coal Mining

Okolnishnikov

2020

Wseas Transactions on Environment and Development

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For increasing the efficiency of longwall coal mining a mathematical model and a simulation model of the longwall coal mining were developed. 2D and 3D visualizations of the execution of the simulation model were realized. The main goal of the modeling of coal mining in a fully-mechanized stoping face is the comparison of flow charts of Longwall coal mining, the evaluation of performance of a drum shearer depending on such factors as technical parameters of the drum shearer, size of a stoping face, flow charts of the drum shearer operation, changing geomechanical characteristics of the coal seam. As a result of simulation the dependences of the drum shearer performance and annual mine profits on the length of the stoping face and flow charts of the drum shearer operation such as one-way flow chart, shuttle flow chart and bench flow chart were obtained.

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“…Li Wei [14] proposed a hidden Markov model (HMM) memory cutting method for the shearer, which prevented large residual errors and frequent adjustments of the shearer cutting drum. Gospodarczyk Piotr [15] focused on the coal mining process for different variants of the shearer construction and kinematic parameters. Xu Jing [16] proposed an online cutting-pattern recognition method with high accuracy and speed.…”

Section: Introductionmentioning

confidence: 99%

Cutting Path Planning Technology of Shearer Based on Virtual Reality

Liu

Xie

et al. 2020

Applied Sciences

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With regards to the low degree of digitization, lack of real geological terrain, and low degree of automation in the cutting process of the traditional virtual fully mechanized mining face, we studied the key technologies of virtual operation and cutting path planning of the shearer on the three-dimensional (3D) roof and floor based on the virtual reality engine (Unity3D). Firstly, the virtual 3D coal seam was constructed through the 3D geological coordinate data of the mine. On this basis, the shape function of the scraper conveyor with the adaptive configuration on the floor was constructed to obtain the combined operation of the virtual shearer and the scraper conveyor. The movement of the shearer’s walking and height-adjustment was then, analyzed. A strategy for automatic height-adjustment based on the adjustment of the direction of the drum movement is hence, proposed to control the cutting path of the shearer. Finally, different experimental schemes were simulated in the developed prototype system after which each of the schemes was evaluated using the fuzzy comprehensive evaluation method. The results show that the proposed strategy for trajectory control can improve the accuracy and stability of the shearer’s motion trajectory. In Unity3D, the pre-selected schemes and digital and visual planning of coal production are previewed ahead of time, the whole production process can be mapped synchronously in the production process. It is also obtained that the virtual preview and evaluation of the production process can provide some guidance for actual production.

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Modeling and Simulation of Coal Loading by Cutting Drum in Flat Seams

Cited by 22 publications

References 6 publications

Research of Response Difference on Coal Cutting Load under Different Cutting Parameters

Research of Response Difference on Coal Cutting Load under Different Cutting Parameters

Comparison of the Efficiency of Various Flow Charts of Longwall Coal Mining

Cutting Path Planning Technology of Shearer Based on Virtual Reality

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