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A multi-period mixed integer programming model is presented in this paper to reduce the overall cost of coal purchasing and transport in large-scale power generation group with the consideration of the stochastic coal demand. Mixed integer liner programming is used in problem formulation considering inherent connection between purchasing and inventory routing, and scenario tree method is applied to...
This paper aims at applying ART-2 neural network algorithm on the research of coal mine safety risk assessment and finally obtains good empirical results by taking some coal mines as the study sample. The results show that the ART-2 neural network algorithm is an appropriate method to assess the safety risk of coal mine. The analysis of empirical results is consistent with the actual situation.
The occurrence of accident is influenced by multiple factors, so in the process of accident warning model construction, we should take full account of the relationships between all of the factors and the accident and the roles that these factors played in the accident. This paper constructs an accident warning model by employing the entropy weight and extension theory. On one hand, this model employs...
This paper use the gray single-level evaluation evaluate coal enterprises' security condition with a gray theory, let the coal enterprise's evaluation be more scientific and more realistic and provide a reference for the safe appraisal of coal enterprise.
This paper describes the rationale of catastrophe theory, designs the index system of coal mine safety management and establishes the evaluation model of mine safety management based on catastrophe theory. We can see that the level of mine safety management of Pingdingshan Coal Group by applying the evaluation model of mine safety management based on catastrophe theory. The model can objectively and...
Safety warning management is a new method of safety management in coal mine, which helps to ease the prevention shortage and change passive situation facing safety accident. The object on early warning management is greatly important for warning management, which affecting warning results seriously. This paper has constructed safety warning management factors system based on literature summary, expert...
The establishment of the indicator system is an important process that helps enterprises to carry out benchmarking on energy efficiency, and is a ligament to link all procedures of benchmarking. According to energy consumption status of molybdenum enterprise, this paper is collecting the factors which have influences on the energy efficiency level. Then the indexes are screened using interpretative...
Considering YuShenfu coal mining area, this paper uses the Gray correlation analysis method to analyze and select the 7 major factors which come from two aspects that are geological occurrence condition and coal mining design condition, on the basis of analyzing the formation mechanism of mining subsidence in the study area. And the five of seven which are disturbance coefficient, width-depth ratio,...
The rapid development of China coal mine safety management information play an important role on improving mine safety standards, however, there exist some problems such as cannot be a comprehensive system of monitoring, evaluation and analysis of safety, forecasting of security trends, etc. Papers have researched based on this problem, carrying out research on an analysis and collection of security...
Through the theoretically analyzing of the foundation of outburst prediction indexes and the existing prediction data of coal mine, a mathematics model was established with the dimension theories by considering with weights of dominant factors for ascertaining sensitive factors of coal seam. The established model and grey relevancy analysis were successfully verified in four coal mine of Pingdingshan...
Coal mines safety condition decides the economic condition of the regional development on one hand, more importantly the safety of employees working for mines on the other. This article has introduced a scientific system to evaluate the safety level of coal mine based on AHP so as to give out significant information for the managers of coal mine to make and implement corresponding polices concerning...
The Coal mine safety is the keystone of the industry safety in our country, in which area, ventilation system is the basis to control the hazards such as gas explosion. Ventilator system is an important part of ventilation system, which can be seen as cold standby system, also is markov repairable system. Here we discussed and calculated the reliability and remain life probability of ventilator system...
There are many uncertainties which have the characteristics of high investment and high risk in coal-bed methane underbalanced drilling. If the potential risk and its state can be predicted in advance, the probability of risk occurrence will be reduced to the minimum extend. On the basis of risk identification of coal-bed methane underbalanced drilling, it concludes that the drilling risks mainly...
Middle and small size fault structure is the key geological factor affecting the safety production of DongPang mine field. Finding out development character of middle and small fault structure in DongPang mine field is to provide the geological premise for mining design of coal mine and working face layout. Based on the analysis of real data, 20 factors affecting the development of middle and small...
In this thesis, the China's Industry will be fractionized through the industry categories and that will be according to the level of modernization evaluating index system which is common used in Developed Countries, and then, we will admeasure the level of the coal industry modernization which benefiting from the researching results from the predecessors. In that way, the factors which can influence...
In view of the problems existing in the prediction methods of coal and gas outburst, a method for prediction of coal and gas outburst based on multi-agent information fusion is proposed. In the method, considering the measured data relevant to many influence factors, a multi-agent information fusion model for rapid, dynamic and accurate prediction of coal and gas outburst is given, Dempster-Shafer...
For optimizing the operations of coal dispatch systems in a coal power plant, this research is to develop a real-time coal dispatch scheme on the basis of the priorities assigned to the coal hoppers of the dispatching system. A new coal danger index is provided. This scheme shows advantages for the operations of a dispatching system with multiple-hoppers, in terms of expanding equipment life, reducing...
Coal is the major energy in China, and its development key lies in narrowing the gap with international counterpart and promoting international competition ability. The paper established the coal industry international competitiveness evaluation index system. Based on the coal industry competitiveness data of 11 main countries rich in coal, the paper adopted principal component analysis for comprehensive...
Presently, China's coal mine safety situation is grim, in which a very important reason is lack of safety investment dynamic. Safety investment dynamic analysis and assessment can provide decision basis for effective control and guide. The paper analyzed impact indicators of coal mine safety investment dynamic; established unascertained clustering based coal mine safety investment dynamic assessment...
Coal mine safety evaluation analyses mine's existent dangerous and harmful factors, and judges mine's potential risks. The evaluation result is propitious to guard against accidents and make management decisions. This paper analyses all kinds of influence elements on coal mine safety, constructs evaluation indexes system, measures weights using AHP, and applies dynamic fuzzy theory in mine safety...
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