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Assessing the current status of underground mine ventilation system in ThanhCong- CaoThang area, HonGai coal company, QuangNinh region, Vietnam

100%

Nguyen C. , Nguyen V. , Nguyen V.

2019

tom R. 21, nr 2/2

45--51

In underground mine ventilation, there are many causes affecting the efficiency of mine ventilation, even affecting mine safety. In order to have an effective mine ventilation system, the research and evaluation of mine ventilation, in order to get timely solutions to improve the efficiency of mine ventilation, is essential and must be done. regularly. Thanh Cong - Cao Thang coal mine area of Hon Gai Coal Company, Quang Ninh region, Vietnam is a mine exploited underground. The nature of this mine is the consolidation (connecting) of Thanh Cong areas and CaoThang areas in the period of 2016. After consolidation into Thanh Cong - Cao Thang mine, many factors in the mine ventilation system of The mine site is altered and affects the efficiency of mine ventilation. This article has analyzed and evaluated the current status of Thanh Cong - Cao Thang Area Ventilation System to help research and select appropriate solutions to promptly improve the efficiency of mine ventilation and ensure security, ensure a safe environment and reduce the cost of mine ventilation.

Determination of methane content at Maokhe coal mine from curent mining to -450 level in Vietnam

100%

Nguyen V. , Nguyen C. , Nguyen V. , Tran X.

2019

tom R. 21, nr 2/2

2--7

Methane gas is one of the most serious dangers of underground coal mining as its buildup can lead to methane gas explosion. In QuangNinh province- Vietnam, several coal mines such as TrangKhe II-III coal mine, Khe Cham coal mine, especially MaoKhe mine that have high methane content. At the MaoKhe coal mine,experimental data showed thatthe concentration of methane in coal seams at different depths were not similar.In order to ensure safety, this report has been undertaken to determine a pattern of changing methane contents of coal seams at different exploitation depths in MaoKhe underground coal mine.

Current Situation and Solutions to Advanced Ventilation Efficiency in Giap Khau Coal Mine Area, Hon Gai Coal Company of Viet Nam

88%

Nguyen C. K. , Nguyen V. , Nguyen P. H. , Dao V. C. , Nguyen V. Q.

tom no. 2, vol. 1

209--219

Mine ventilation aims to dilute toxic gas concentrations, dilute dust concentrations, remove them from the mine and ensure pleasant microclimate conditions in the mine, especially at work sites. Currently, in underground coal mines in general and in Giap Khau mine area, Hon Gai coal company, in particular, is in the process of converting the mining area into deep, as well as increasing output. Therefore, it is important to ensure that ventilation is a top priority in long-term occupational safety and meets the plan to increase coal production. In this study, we have evaluated the current state of ventilation in Giap Khau mine area. From those research results, on the basis of computational research methods, we have come up with reasonable solutions to change and improve ventilation efficiency for the mine in the condition of complicated mining plan and technology characteristics are still limited compared to those in the world. Specific solutions solve 2 problems: First, ensure ventilation for the current mining operation stage; Secondly, we have researched and proposing suitable solutions for ventilation of Giap Khau area mine when it has to increase production and move down to an adjacent project at a deeper level.

Zwiększająca się głębokość pokładów węgla w kopalniach podziemnych ogólnie mówiąc a szczególnie w kopalni Giap Khau i związany z nią wzrost temperatury pierwotnej górotworu są powodem pogarszania się warunków mikro-klimatycznych pracy górników i wystąpienia zagrożenia klimatycznego w przodkach górniczych. Wentylacja ma na celu rozrzedzenie stężeń gazów toksycznych, rozrzedzenie stężeń pyłów, usunięcie ich z kopalni oraz zapewnienie przyjemnych warunków mikroklimatycznych. W artykule, przedstawiono wyniki oceny aktualnego stanu wentylacji w kopalni Giap Khau i odpowiednie rozwiązania, które pozwalają poprawić efektywność systemu wentylacji zwalczając zagrożenie klimatycznych kopalni.