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Ventilation of tunnels during drilling using a forcing ventilation system - a case study

Słota Krzysztof, Słota Zbigniew

Journal of Sustainable Mining

2023

Vol. 22. iss. 4

308--315

In Poland, more and more tunnels are being built using mining methods. Mostly ventilation systems are described for tunnels already commissioned. There are few examples of ventilation calculations for tunnels under construction. The paper shows a case study where calculations were made of the minimum air volume flow required to ventilate a tunnel during its tunnelling using four duct ventilation systems. The first system used two separate fans with a 1200 mm diameter duct line, the second system changed the diameter of the duct line to 1400 mm, the third system used one fan with two 1200 mm diameter duct lines connected in parallel, and the fourth system increased the diameter of the duct line to 1400 mm. Fan power requirements were determined for these layouts. The cost statement shows that it is advantageous to change the diameter of the duct line to a larger one - reducing the total cost by about 10%. With the assumed electricity prices, the more favourable variants are the systems for which two fans with separate duct lines are provided - a cost difference of about 5%.

Przegląd regulacji, przepisów i zaleceń dotyczących wymogów stawianych obiektom tunelowym w Polsce oraz krajach Europy środkowej

Michałek M.

Zeszyty Naukowe. Górnictwo / Politechnika Śląska

2008

z. 286

135-143

Temat obejmuje analizę norm i zaleceń dotyczących budownictwa tunelowego w Polsce i wybranych krajach europejskich w zakresie wykonawstwa i kontroli jakości infrastrukturalnych budowli podziemnych. Artykuł obejmuje również wskazania dotyczące integracji dotychczas stosowanych przepisów w tym zakresie w celu ich uporządkowania.

This paper contains analysis of the standards of regulations or guidances applicable in Polish and in some of the European countries' tunneling activity in the field of constructing, safety and quality of underground infrastructural objects. The paper shows also the recommendations concerned with integration and straighten up currently using standards.