Reliability analysis of mine water supply network for dust control based on water age entropy

被引：0
|
作者：
Peng Y. [1 ]
Jiang Z. [1 ]
Wang P. [2 ]
机构：
[1] School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing
[2] School of Management and Engineering, Capital University of Economics and Business, Beijing
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2020年 / 51卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Hydraulic and water quality simulation; Information entropy; Mine water supply network for dust control; System reliability; Water age entropy;
D O I：
10.11817/j.issn.1672-7207.2020.08.017
中图分类号：
学科分类号：
摘要：
In order to better understand the performance of underground mine water supply network for dust control and ensure normal and effective operation of mine comprehensive dust control facilities, a dynamic reliability evaluation model of the mine water supply network was developed based on information entropy, hydraulics and water quality dynamics, taking account of hydraulic conditions and topological features. Formula of water age entropy was derived by combining the water age index with path flow. Based on MATLAB programming platform, solver of the reliability model was then established in combination with EPANET calculation engine capable of simulating hydraulic and water quality behavior within water supply systems. The results show that during the simulation period of 48 h, the average system reliability is 0.180 3, which indicates the network needs to be improved. Due to the dynamic change of underground water demand, the reliability distribution of each node in different time periods shows high discreteness, and there is no obvious linear relationship with water consumption. The overall trend of system reliability over time has a high positive correlation with the total water consumption, Pearson correlation coefficient is 0.814, and they show daily periodicity. Multi-path nodes and looped structure are effective ways to improve the reliability of underground mine dustproof water supply network. The proposed model applied in an underground mine water supply network of Kailuan Group verifies its rationality and feasibility. © 2020, Central South University Press. All right reserved.
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页码：2221 / 2231
页数：10
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