Determination of actual characteristic curve of main ventilation fan at Quang Ninh underground coal mines using field measurement method

Van Chi Dao, Tien Dung Le, Xuan Ha Tran
Author affiliations

Authors

  • Van Chi Dao Department of Underground Mining, Hanoi University of Mining and Geology, Hanoi 100000, Vietnam
  • Tien Dung Le Department of Underground Mining, Hanoi University of Mining and Geology, Hanoi 100000, Vietnam
  • Xuan Ha Tran Vietnam Association of Mining Science and Technology, Hanoi 100000, Vietnam

DOI:

https://doi.org/10.15625/2615-9783/16761

Keywords:

Underground mine ventilation, main fan, characteristic curve, field measurement method

Abstract

Determining a proper operation mode of the main ventilation fan at an underground coal mine primarily uses the theoretical characteristic curves of the fan’s manufacturer. Because these curves are developed in laboratory-standard conditions, the characteristic curves under different conditions in practice significantly change, seriously impacting the ventilation efficiency and environmental safety of mine. This paper presents a determination of the main fan's actual characteristic curve using a field measurement method. The method involves the (i) simultaneous measurement of airflow and air pressure at designated locations in fan drift and ventilation crosscut and (ii) statistical analysis and interpolation of the measured data. The results show that the fan actual pressure curve is permanently displaced to the left and steeper than the corresponding theoretical pressure curve in an on-site operating mode. The finding points out that on-site fans operate in overload mode that can quickly damage their mechanical components. This method provides mining engineers with an easy-to-apply tool for proper adjustment of the operation mode. This improves ventilation efficiency, increases environmental safety, and reduces the underground coal mine operational costs.

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References

Aitao Z., Kai W., 2018. A new gas extraction technique for high-gas multi-seam mining: a case study in Yangquan Coalfield, China. Environmental Earth Sciences, 77, 150.

American National Standards Institute, 1999. AMCA 210: Laboratory Methods of Testing Fans for Aerodynamic Performance Rating. Air Movement and Control Association International, Inc. & American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc.

Bascompta M., Sanmiquel L., Zhang H., 2018. Airflow Stability and Diagonal Mine Ventilation System Optimization: A Case Study. Journal of Mining Science, 54, 813-820.

Center for mining science, technology and environment, 2021. Development of method determining actual characteristic curve and proposal of process determining reasonable working mode of main fan for TKV underground coal mines. Hanoi. (In Vietnamese).

China University of Mining and Technology, 1995. Atlas of coal mine ventilation and safety engineering in China, CUMT Press. (In Chinese).

Green Science Development Joint Stock Company, 2016a. Verification of ventilation network at Ha Rang - Ha Long Coal Company: ventilation calculation for year 2016. Hanoi (in Vietnamese).

Green Science Development Joint Stock Company, 2016b. Verification, air inverter and proper working mode of main fans - Improvement on ventilation efficiency at Nam Mau Coal Company - Vinacomin. Hanoi (in Vietnamese).

Green Science Development Joint Stock Company, 2017a. Study on verification of ventilation network at Bac Coc Sau - Ha Long Coal Company. Hanoi (in Vietnamese).

Green Science Development Joint Stock Company, 2017b. Survey, evaluation and development of main fan characteristics; inspection of ventilation network at Mong Duong Coal Company - Vinacomin. Hanoi (in Vietnamese).

Green Science Development Joint Stock Company, 2018. Verification of ventilation network and development of ventilation plan for level -350 of Khe Cham I - Ha Long Coal Company. Hanoi (in Vietnamese).

Ha Lam Coal Company, 2018. Fundamentals for development of ventilation plan Quarter III, IV 2018. Quang Ninh (in Vietnamese).

Ha Lam Coal Company, 2019. Explanation of ventilation-technical plan in 2019-2023. Quang Ninh (in Vietnamese).

Kursunoglu N., Onder M., 2015. Selection of an appropriate fan for an underground coal mine using the Analytic Hierarchy Process. Tunnelling and Underground Space Technology, 48, 101-109.

Li B.-R., Inoue M., Shen S.-B., 2018. Mine Ventilation Network Optimization Based on Airflow Asymptotic Calculation Method. Journal of Mining Science, 54, 99-110.

Li M., Wang X.-r., 2009. Performance evaluation methods and instrumentation for mine ventilation fans. Mining Science and Technology (China), 19, 819-823.

Mishra D.P., Kumar P., Panigrahi D.C., 2016. Dispersion of methane in tailgate of a retreating longwall mine: a computational fluid dynamics study. Environmental Earth Sciences, 75, 475.

Mong Duong Coal Company, 2017. Explanation of ventilation Quarter III, IV 2017. Quang Ninh (in Vietnamese).

Pham K.M., Hoang Q.H., 2017. Inspection of main fan for underground coal mine Mining Technology Bulletin, 29-33 (in Vietnamese).

Qin Feng Fan Manufacturer, 2012a. Fan B (DKZ) and B (KZ). Shan Xi, China (in Chinese).

Qin Feng Fan Manufacturer, 2012b. Main Fan series FBDCZ and FBD. Shan Xi, China (in Chinese).

Sasmito A.P., Birgersson E., Ly H.C., Mujumdar A.S., 2013. Some approaches to improve ventilation system in underground coal mines environment - A computational fluid dynamic study. Tunnelling and Underground Space Technology, 34, 82-95.

Shen Yang Fan Manufacturer, 2012a. Main Fan series 2K56. Shen Yang, China (in Chinese).

Shen Yang Fan Manufacturer, 2012b. Main Fan series 2K58. Shen Yang, China (in Chinese).

Sun H.-t., Zhao X.-s., Li R.-h., Jin H.-w., Sun D., 2017. Emission reduction technology and application research of surface borehole methane drainage in coal mining-influenced region. Environmental Earth Sciences, 76, 336.

Tran X.H., 2013. Inspection of main fan FBDCZ-10-No.35 at Nam Mau Coal Company - Vinacomin and evaluation of fan-shifting ability. Hanoi (in Vietnamese).

Tran, X. H., Dang, V. C., Nguyen, V. S., Nguyen, C. K., Nguyen, V. T., and Phan, Q. V., 2012. Safety in underground mining, Hanoi, Science and Technology Publishing House (in Vietnamese).

Vietnam Ministry of Science and Technology, 2013a. TCVN-9439:2013/ISO 5801:2007 Industrial fans - Performance testing using standardized airways (in Vietnamese).

Vietnam Ministry of Science and Technology, 2013b. TCVN-9440:2013/ISO 5802:2011 Industrial fans - Performance testing in situ (in Vietnamese).

Wallace K., Prosser B., Stinnette J.D., 2015. The practice of mine ventilation engineering. International Journal of Mining Science and Technology, 25, 165-169.

Xia T.-q., Xu M.-j., Wang Y.-l., 2017. Simulation investigation on flow behavior of gob gas by applying a newly developed FE software. Environmental Earth Sciences, 76, 485.

Zhang Q.Q., 1999. Ventilation and safety, CUMT Press (in Chinese).

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Published

30-11-2021

How to Cite

Van Chi Dao, Tien Dung Le, & Xuan Ha Tran. (2021). Determination of actual characteristic curve of main ventilation fan at Quang Ninh underground coal mines using field measurement method. Vietnam Journal of Earth Sciences, 44(2), 165–180. https://doi.org/10.15625/2615-9783/16761

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Articles