scholarly journals Multisource Information Risk Evaluation Technology of Mine Water Inrush Based on VWM: A Case Study of Weng’an Coal Mine

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Bo Li ◽  
Tao Li ◽  
Wenping Zhang ◽  
Zijie Liu ◽  
Lei Yang
Keyword(s):  
Information Fusion ◽  
Mine Water ◽  
Evaluation Method ◽  
Evaluation Model ◽  
Water Inrush ◽  
Fusion Technology ◽  
Control Effect ◽  
Constant Weight ◽  
Variable Weight ◽  
Weight Model

The use of multisource information fusion technology to predict the risk of water inrush from coal floor is a research hotspot in recent years, but the current evaluation method is mainly based on a constant weight evaluation model. Using constant weights to reflect the control effect of changing factor state values on water inrush evaluation has obvious limitations, and it is unable to describe the control effect of the hydrogeological condition mutation on the water inrush from the floor. In order to solve the above problems, this manuscript introduces the idea of variable weight into the field of water inrush evaluation, expounds on the significance of variable weight theory for water inrush evaluation, analyzes the characteristics of mine water inrush variable weight evaluation, and, on this basis, further combines GIS-based multisource information fusion technology and typical engineering case to compare with the evaluation effect map, evaluation unit, and comprehensive evaluation values. The differences between the variable weight model (VWM) and the constant weight model (CWM) are analyzed, which proves that the evaluation process of the variable weight evaluation model is more reasonable and can effectively improve the evaluation accuracy.

Method for assessing coal-floor water-inrush risk based on the variable-weight model and unascertained measure theory

2017 ◽  
Vol 25 (7) ◽  
pp. 2089-2103 ◽  
Author(s):  
Qiang Wu ◽  
Dekang Zhao ◽  
Yang Wang ◽  
Jianjun Shen ◽  
Wenping Mu ◽  
...  
Keyword(s):  
Measure Theory ◽  
Water Inrush ◽  
Variable Weight ◽  
Floor Water Inrush ◽  
Weight Model

Risk assessment of floor water inrush in coal mines based on MFIM-TOPSIS variable weight model

2021 ◽  
Vol 28 (8) ◽  
pp. 2360-2374
Author(s):  
Guan-da Zhang ◽  
Yi-guo Xue ◽  
Cheng-hao Bai ◽  
Mao-xin Su ◽  
Kai Zhang ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Water Inrush ◽  
Coal Mines ◽  
Variable Weight ◽  
Floor Water Inrush ◽  
Weight Model

scholarly journals Application of Variable Weight Coefficient Method in State Evaluation of AC Contactor

2018 ◽  
Vol 232 ◽  
pp. 03041
Author(s):  
Yuze Su ◽  
Zichun Liu ◽  
Kai Gao ◽  
Guangyu Na ◽  
Shuxin Liu
Keyword(s):  
Evaluation Method ◽  
Great Influence ◽  
Fuzzy Comprehensive Evaluation ◽  
Weight Coefficient ◽  
The State ◽  
Evaluation Index System ◽  
Constant Weight ◽  
State Evaluation ◽  
Variable Weight ◽  
Coefficient Method

AC contactor state evaluation is a challenging problem. This paper proposes an AC contactor state assessment method based on variable weight coefficient. Firstly, the characteristic indicators that have a great influence on the state of the AC contactor are selected, and the state evaluation index system is established. Secondly, using the subjective and objective combination weighting method combined with the analytic hierarchy process and the grey relational analysis method, the constant weight coefficient is obtained, and the variable weight coefficient method with the equalization function is introduced to obtain the variable weight coefficient of each characteristic parameter. Finally, the fuzzy comprehensive evaluation method is used to evaluate the running state of the AC contactor. The experimental results show that the state evaluation method proposed in this paper can accurately reflect the real state of the AC contactor operation and effectively improve the reliability of the power system.

Study on Oil Quality Evaluation System and its Implementation Based on Multi-Information Fusion

2011 ◽  
Vol 197-198 ◽  
pp. 1486-1493
Author(s):  
Xiong Xi Wu
Keyword(s):  
Neural Network ◽  
Information Fusion ◽  
Evaluation System ◽  
Quality Evaluation ◽  
Evaluation Model ◽  
Oil Quality ◽  
Fusion Technology ◽  
Model Based ◽  
Quality Evaluation System ◽  
Quality Evaluation Model

This paper presents the oil quality evaluation system and establishes the two-stage fusion model based on multi-sensor information fusion technology. It also develops the oil quality evaluation model based on neural network model. With the advantages of multi-source information technology, the model implements comprehensive evaluation for oil quality, and provides a set of neural network training process and its results which achieve the oil quality evaluation based on information fusion. The case study shows that the prediction results for four kinds of oil samples by evaluation model based on multi-source fusion are consistent with the actual results. The comparison between operation test trend predictions and actual tests also shows the correctness of the oil quality evaluation model. The proposed multi-information fusion technology for oil quality evaluation system improves the evaluation accuracy and reduces dependence on technical personnel’s analysis experience, which is of great importance for improving the technical management level and the awareness of oil lubrication properties.

Condition Assessment of Wind Turbine Based on Cloud Model

2013 ◽  
Vol 448-453 ◽  
pp. 3327-3330 ◽  
Author(s):  
Yu Song ◽  
Jian Mei Zhang
Keyword(s):  
Wind Turbine ◽  
Evaluation System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Cloud Model ◽  
Evaluation Model ◽  
Comprehensive Evaluation Method ◽  
Variable Weight ◽  
Quantitative Indicators ◽  
Cloud Theory

In order to detection wind turbine equipment and accurately assess the the equipments condition, this paper combines cloud theory, and propose a new comprehensive evaluation method about wind turbine operating status. Use AHP to establish wind turbine evaluation system, and taking advantage of variable weight mode correct quantitative indicators right weight. Adopt Cloud model function represent the indicator data, and establish improved evaluation model, finally, an example verify the effectiveness of the method.

The Application of the Improved Interval Number Fuzzy Comprehensive Method in Bridge Evaluation

2010 ◽  
Vol 163-167 ◽  
pp. 3285-3291
Author(s):  
Zhao Lan Wei ◽  
Qian Hui Pu ◽  
Xue Jin Huo
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Fuzzy Comprehensive Evaluation ◽  
Interval Number ◽  
Fuzzy Evaluation ◽  
Existing Problems ◽  
Variable Weight ◽  
Key Issues ◽  
The Stability

The key issues in the theory of interval number fuzzy comprehensive evaluation are discussed in this paper, which includes weight interval calculation, quantitative index dimensionless method and etc. Due to the deficiency of “line method” for interval number formation, one improved method is given to increase the stability of interval number. Then the existing problems of several initial evaluation models are discussed, and the probability theory is introduced to improve evaluation model combined with coefficient of variable weight method. This improved interval number fuzzy evaluation method is adopted on one concrete cable-stayed bridge to general evaluate its safety and durability. The result shows that this improved fuzzy evaluation method can well reflect the general working status of the bridge and have good feasibility and practicality.

Variable Weight Fuzzy Comprehensive Evaluation Method for Health Condition of Warship Electromechnical Device

2012 ◽  
Vol 226-228 ◽  
pp. 729-733
Author(s):  
Guang Yu Zhang ◽  
Qing Min Li ◽  
En Shun Ge
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Health Assessment ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Process ◽  
Actual Condition ◽  
Constant Weight ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Variable Weight

Increasing sophistication of naval shipboard machinery coupled with increasing competition for skilled manpower and tightening of defense budgets is forcing the Navy to consider alternative maintenance concepts. This paper proposes a health assessment process in condition-based maintenance architecture based on variable weight fuzzy comprehensive evaluation method. Through analyzing the variables affecting on warship electromechnical equipment condition, a layered assessment index system for warship electromechnical equipment health assessment is built. First, the AHP method is used to determine the constant weight of every index, and then the variable weight model is introduced based on balanced function, in which the constant weight is modified to get the variable weights. By comparing the fuzzy synthetic evaluation based on constant weights with that based on variable weighs, the results show that, the latter is more reasonable and objective, and is also more close to the actual condition of warship electromechnical equipment.

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