An Efficient Mine Ventilation Solution Method Based on Minimum Independent Closed Loops

Deyun Zhong, Liguan Wang, Jinmiao Wang and Mingtao Jia
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Deyun Zhong: School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Liguan Wang: School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Jinmiao Wang: School of Resources and Safety Engineering, Central South University, Changsha 410083, China
Mingtao Jia: School of Resources and Safety Engineering, Central South University, Changsha 410083, China

Energies, 2020, vol. 13, issue 22, 1-16

Abstract: In this paper, according to the analysis of optimum circuits, we present an efficient ventilation network solution based on minimum independent closed loops. Our main contribution is optimizing the circuit dividing strategy to improve the iteration convergence and the efficiency of a single iteration. In contrast to a traditional circuit, a minimum closed loop may contain one or more co-tree branches but fewer high-resistance branches and fan branches. It is helpful in solving the problem of divergence or slow convergence for complex ventilation networks. Moreover, we analyze the dividing rules of closed loops and improve the dividing algorithm of minimum independent closed loops. Compared with the traditional Hardy Cross iteration method, the improved solution method has better iteration convergence and computation efficiency. The experimental results of real-world mine ventilation networks show that the improved solution method converges rapidly within a small number of iterations. We also investigate the influence of network complexity, iterative precision, and initial airflow on the iteration convergence.

Keywords: mine ventilation; ventilation network solution; Hardy Cross solution; minimum independent closed loops; optimum circuits (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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