Author:
Słota Krzysztof,Słota Zbigniew
Abstract
In the case of tunnelling by mining methods, mining regulations apply to the design of ventilation. The most important criteria to be taken into account when calculating the minimum air flow rate in a tunnel are the air velocity, the multiple exchange of air during one hour, not exceeding the permissible concentrations of gases and dust, and ensuring appropriate climatic conditions. In this paper, an analysis of ventilation methods is carried out, taking into account the parameters of fans and ventilation ducts. Changing the diameter of the duct line from 1,000 to 1,400 mm results in a 3-4-fold reduction in fan power. Adding a second twin installation reduces the ventilation power requirement fourfold. Making the duct lines parallel increases the ventilation power requirement by about 30-50% compared to two duct installations.
Publisher
University of Zielona Góra, Poland
Reference14 articles.
1. Regulation of the Minister of the Family, Labour and Social Policy of 12 June 2018 on the maximum permissible concentrations and intensities of factors harmful to health in the working environment [Rozporządzenie Ministra Rodziny, Pracy i Polityki Społecznej z dnia 12 czerwca 2018 r. w sprawie najwyższych dopuszczalnych stężeń i natężeń czynników szkodliwych dla zdrowia w środowisku pracy]. Journal of Laws 2018, item 1286, dated 03.07.2018.
2. Regulation of the Minister of the Family, Labour and Social Policy of 12 June 2018 on the maximum permissible concentrations and intensities of factors harmful to health in the working environment [Rozporządzenie Ministra Energii z dnia 23 listopada 2016 r. w sprawie szczegółowych wymagań dotyczących prowadzenia ruchu podziemnych zakładów górniczych]. Journal of Laws 2018, item 1286, dated 03.07.2018.
3. Study on Methane Distribution in the Face Zone of the Fully Mechanized Roadway with Overlap Auxiliary Ventilation System
4. Fang, Y, Yao, Z and Lei, S 2019. Air flow and gas dispersion in the forced ventilation of a road tunnel during construction. Undergr. Space 4, 168–179.
5. Hua, Y et al. 2018. Research on multi-radial swirling flow for optimal control of dust dispersion and pollution at a fully mechanized tunnelling face. Tunn. Undergr. Space Technol. 79, 293–303.