Risk Assessment of Floor Water Inrush Using Entropy Weight and Variation Coefficient Model

For the accuracy of the inrush risk assessment of the problem, put forward in the mine inrush risk assessment using the entropy weight fuzzy comprehensive evaluation method to determine the index weight, through the membership function in fuzzy comprehensive evaluation to quantify the qualitative description of these factors, evaluated the henan jiaozuo mine inrush risk. The results show that the mine water inrush risk grade is "great", the actual mine water inrush accidents have occurred, prediction results conform to the actual situation, and safety evaluation value based on the principle of maximum membership degree is more than analytic hierarchy - fuzzy comprehensive evaluation to get , 0.0696. Thus, the method in the mine inrush prediction can objectively and accurately reflect the actual situation of mine inrush.

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Relative Impermeability of the Ordovician Top and Risk Assessment of Water Inrush from Coal Floor in Baode Coalfield

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.671-674.85 ◽

2013 ◽

Vol 671-674 ◽

pp. 85-89

Author(s):

Wei Jie Zhang ◽

Shu Cai Li ◽

Jiu Chuan Wei ◽

Qing Song Zhang ◽

Ren Tai Liu ◽

...

Keyword(s):

Risk Assessment ◽

High Pressure ◽

Water Inrush ◽

Karst Aquifer ◽

Wash Water ◽

Water Quantity ◽

Karst Water ◽

Coal Seams ◽

Filling Degree ◽

Floor Water Inrush

In order to study the safety mining of the deep buried coal seams being threatened by high pressure karst water, relative impermeability of the Ordovician top is demonstrated through studying lithology，filling degree of the karst fissures as well as wash water quantity, in the Baode mine field. Furthermore, the main influencing factors on impermeability of coal seam floor are analyzed, and divisional risk assessment of floor water-inrush from the Ordovician karst aquifer is performed. Overall，by considering the relative impermeable strata in the Ordovician top, the accuracy of risk assessment on coal floor water-inrush can be improved.

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Intelligent Evaluation System of Water Inrush in Roadway (Tunnel) and Its Application

Water ◽

10.3390/w10080997 ◽

2018 ◽

Vol 10 (8) ◽

pp. 997 ◽

Cited By ~ 4

Author(s):

Shaoshuai Shi ◽

Xiaokun Xie ◽

Zhijie Wen ◽

Zongqing Zhou ◽

Liping Li ◽

...

Keyword(s):

Risk Assessment ◽

Mine Water ◽

Evaluation System ◽

Water Inrush ◽

Technical Problem ◽

Control Measures ◽

Mine Safety ◽

Water Control ◽

Entropy Weight ◽

Entropy Weight Method

The risk assessment of mine water inrush is a complicated theoretical and technical problem that concerns hydrogeology conditions, engineering geology, mining conditions, rock mechanics, etc. To address this problem, a software system for the risk assessment of mine water inrush was established. From the matter-element extension theory, combined with the entropy-weight method, a matter-element extension entropy-weight model was constructed to evaluate mine safety. Eleven indices were determined based on the principles of science, rationality, operability, and representation, and each index was quantitatively graded. This system had built-in abundant cases of typical mine water inrush so users could determine the value of the parameter according to the analogy of water inrush cases with similar conditions. Combined with the analysis of typical water inrush cases, a database of water control measures with a strong advisory function was established. Finally, through the case study of a typical mine, it was found that the results of this study agreed with the practical ones, indicating that this system could improve the accuracy and availability of the risk assessment of mine water inrush.

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