Shenhua Shendong Coal Group Corporation Ltd

Fugu, China

Shenhua Shendong Coal Group Corporation Ltd

Fugu, China
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Zhu Z.-Q.,China University of Mining and Technology | Zhu Z.-Q.,Shenhua Shendong Coal Group Corporation Ltd
Meitan Xuebao/Journal of the China Coal Society | Year: 2017

The mathematical model between ash content and coal macerals content was established based on the coal samples used for coal liquefaction in Shendong. The feasibility of the enrichment of coal macerals in compound force field was verified in this paper. The experimental research on the variable parameter separation of 1-0.25 mm coal sample was carried out by Falcon concentrator, and the separation mechanism based on the enhancement of centrifugal force field was revealed. The results show that the relationship between macerals content and ash content is obvious, and the model relationship can be expressed by an exponential function model. The separation test results show that the vitrinite content can be improved significantly in the compound force field, the vitrinite content in clean coal can reach 70%, meanwhile, and the yield of clean coal is up to 80%. For 1-0.25 mm samples, in order to provide sufficient radial stratification power by fluidized water, the effective separation should be controlled in a lower centrifugal force condition. The compound force field can effectively strengthen the separation behavior difference between different coal macerals, which can effectively realize the enrichment of coal macerals. © 2017, Editorial Office of Journal of China Coal Society. All right reserved.


Yang J.-Z.,Shenhua Shendong Coal Group Corporation Ltd
Meitan Xuebao/Journal of the China Coal Society | Year: 2012

The vibrating screen of Schenck SLO2496 banana type was researched, and the concrete data of dimension could be obtained through the field measurement. The three-dimensional model was established based on maintenance manual combined with the concrete data. Then it was transmitted into Workbench software, in which vibration modal analysis was completed. Meanwhile, the whole vibrating system was simplified as a single freedom vibration system by theoretical analysis, and then obtained the system natural frequency. Followed by the vibrating screen hammer test for experimental modal results, and finally compared with the finite element results to validate their reasonable. From the analysis result, the various order natural frequency and vibration mode are obtained. The vibration performance is obtained, which provide an essential theoretical basis for the optimization design. It allowed the excitation frequency as far as possible away from the resonance frequency range, and allowed the shaker resonate between the various components in use process, and improve the service life of the vibrating screen. Meanwhile, the analysis results can be used as essential theory basis for further dynamic analysis.


Zhang J.-H.,Shenhua Shendong Coal Group Corporation Ltd
Meitan Xuebao/Journal of the China Coal Society | Year: 2012

The O-ring floating seal structure design, friction mechanism and characteristics compared with the packing seal were introduced. Briefly introduced occasions in the floating seal applications, involving the determination of parameters of face seal, seal ring and O-ring material selection, manufacturing and installation techniques, and introduced floating in applications such as drum shearer O-ring sealed solid and shuttle cars walking gear gearbox output shaft for the floating seal packing seal transformation effect.


Liu Y.,Chang'an University | Liu Y.,Shenhua Shendong Coal Group Corporation | Wang X.,Chang'an University
MATEC Web of Conferences | Year: 2015

According to the characteristics of the 1-2 coal seam of Shangwan coal mine 4th panel, this research analyzed the feasibility of sublevel caving hydraulic support in the fully-mechanized mining face through estimation method and numerical simulation calculation. This paper also researched the several factors that affect the caving property of top-coal, such as coal thickness, coal hosting depth, top-coal joint fissure, parting condition and caving height. In the meantime, the FLAC3D was used to simulate the caving progress. The results showed that the scheme is feasible. This method cannot only guarantee the stability of coal wall but also crush the coal by the force from the mine pressure hydraulic supports. © Owned by the authors, published by EDP Sciences, 2015.


Hu Z.-Q.,China University of Mining and Technology | Wang X.-J.,China University of Mining and Technology | He A.-M.,Shenhua Shendong Coal Group Corporation Ltd
Meitan Xuebao/Journal of the China Coal Society | Year: 2014

Coal mining might cause serious environmental damage in ecologically fragile region. In sandy and windy region, ground fissure is the most typical characteristic of ecological damages caused by underground coal mining. However, few works and reports are related to the generation and whole development process of ground fissures caused by high tension and rapid caving mining. Through the united space coordinates control system at surface-underground, a comprehensive observation method was invented to monitor ground fissure on the No. 12406 working face of Bulianta coalfield, distribution characteristic of marginal fissures, genesis and development rules of dynamic fissures and their relationship with mining geological conditions were revealed. The results show that: (1) Dynamic fissures always develop ahead of the current working location, the crossover distance has a significant positive linear correlation with size of daily footage. The average fissure crossover distance is 10.359 m and advance angle of break is approach to vertical angle. (2) Under the high tension and rapid caving mining, dynamic ground fissures havn't obvious heads in vertical direction, those widths had similar cyclical changes during the mining process and present 'M' type with two different peaks. The first peak (maximum width) is 1.4-3.8 times of the second one. The life-cycle of a dynamic fissure is 18 days, including two cracking-closure processes with similar duration. On this basis, a common function model for the life-cycle was established based on mining and geological conditions. It indicates that dynamic fissures have fast 'self-healing' features and manual repairmen might not be necessary. (3) Marginal fissures occurrs in strips and the 'O' shape inside of boundary working face, and the width of strip of marginal fissures is about 46-50 m. If the adjacent coal face excavates, the width of the strip of marginal fissures in this side will be narrowed 40% due to the double disturbance. The distribution region of marginal fissures will exist long time and need manual restoration.


Yang R.M.,Shenhua Shendong Coal Group Corporation Ltd
Advanced Materials Research | Year: 2013

In recent years, there are a lot of safety accidents in China's coal mine, it causing heavy casualties and huge economic losses, so the coal mine production safety situation is very grim. In order to improve this situation, we research and design a set of coal mine safety monitoring system. Its underlying uses a technology which is ZigBee, it is short-range, low-speed wireless networks, and it connecting the coal mine of numerous sensor and video surveillance systems. Monitoring interface uses a Web way constitute a complete set of coal mine safety monitoring system in order to be able to burst in coal mine disasters in a full range of monitoring, and to avoid the occurrence of safety accidents. In this paper, the overall coal mine safety monitoring system theory and specific design. © (2013) Trans Tech Publications, Switzerland.


Gao J.,Shenhua Shendong Coal Group Corporation Ltd | He H.-T.,Shenhua Shendong Coal Group Corporation Ltd
Meitan Xuebao/Journal of the China Coal Society | Year: 2010

According to the seam deposit conditions in Shendong mining area, a flexibility comparison and analysis was made on the slicing mining, the top coal caving mining and the fully mechanized full seam one passing mining technology. The results show that the fully mechanized full seam one passing mining technology has a good flexibility to the seam geological condition and has better technical and economic advantages. In combination with the geological conditions, mine strata pressure analysis and the equipment matching study of Shendong mining area, a full seam one passing mining technical route was developed for the fully mechanized 6.3 m high cutting coal mining face. Meanwhile a research and development on the matching equipment and the mining technique was conducted. Introduced the face equipment matching status and the main technical parameters of the completed equipment and analyzed the mining face operations in the Shangwan Mine and Bulianta Mine. The results show that the mining rate of the coal mining faces is over 96%.


Zhang J.-H.,Shenhua Shendong Coal Group Corporation Ltd
Meitan Xuebao/Journal of the China Coal Society | Year: 2011

In the process of mining equipment maintenance modernization, high-quality, efficient, energy-saving, material saving, environmental protection as criterion, combining parts wear, damage types and technical requirements, using laser cladding, arc spraying, brush plating, surfacing, metal surface strengthening surface engineering technology studied structure and transmission components remanufacturing. Through practice summarized the process principle of applicability, and put forward the corresponding repair plan.


Yang R.M.,Shenhua Shendong Coal Group Corporation Ltd
Applied Mechanics and Materials | Year: 2013

Coal mine safety accidents lead to national casualties and economic losses, to the greatest extent reduce accidents, it is a worldwide problem. In addition to strengthen safety management, security monitoring, there is a better way is to enhance the mine industrial automation process. The use of intelligent industrial robots in the mine, it will improve the efficiency of coal at the same time, and greatly reduce the risk of injury or even can effectively avoid accidents. This paper is to study one intelligent industrial robot which can use in the mine, and it use state-of-the-art motor control technology, and can operate it to high-risk job in the control room. In this paper, a detailed study of the specific structure of the industrial robots, and designed a complete set of control scheme. © (2013) Trans Tech Publications, Switzerland.


Chen S.,Xi'an University of Science and Technology | Chen S.,Shenhua Shendong Coal Group Corporation Ltd | Zhu W.,China University of Mining and Technology
Caikuang yu Anquan Gongcheng Xuebao/Journal of Mining and Safety Engineering | Year: 2016

The rational layout of mining roadways below upper synchronously mining longwall faces under the condition of ultra-close coal seams is the key issue for the safe operation in Huojitu coal mine. To overcome this critical challenge, this paper studied the double-roadway layout under the upper section coal pillar in less than 2 m interval coal seams through numerical simulation and field measurement. It is showed that when the widths of section coal pillars are 20 m and 35 m, the maximum cover depths of lower double-roadway are 100 m and 150 m, respectively. By placing the double-roadway under the upper 35 m-wide section coal pillar in No.3 panel of Huojitu mine, the deformation of the roadway is only 50 mm totally in spite of 3 times mining influence. The roadways can be in safe and normal use without maintenance. This provides reference for safe and efficient mining under the similar shallow ultra-close coal seams condition. © 2016, Editorial Board of Journal of Mining & Safety Engineering. All right reserved.

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