Szczegóły publikacji
Opis bibliograficzny
Mining methane drainage in Polish coal mines / Nikodem SZLĄZAK, Dariusz OBRACAJ // W: Thirtieth annual international Pittsburgh coal conference : coal – energy, environment and sustainable development : September 15–18, 2013, Beijing : abstracts booklet. — [Pittsburgh : s. n.], cop. 2013. — S. 20. — Pełny tekst W: Thirtieth annual international Pittsburgh coal conference [Dokument elektroniczny] : September 15–18, 2013, Beijing : proceedings. — Wersja do Windows. — Dane tekstowe. — [China : s. n.], cop. 2013. — 1 dysk optyczny. — ISBN 1-890977-30-6. — S. [1–12]. — Wymagania systemowe: Adobe Reader ; napęd CD-ROM. — Bibliogr. s. [12], Abstr. — Publikacji towarzyszy prezentacja slajdów
Autorzy (2)
Dane bibliometryczne
| ID BaDAP | 77149 |
|---|---|
| Data dodania do BaDAP | 2013-11-05 |
| Rok publikacji | 2013 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
| Konferencja | 30th Annual International Pittsburgh Coal Conference 2013 |
Abstract
Methane drainage is used in Polish coal mines in order to reduce mine methane emission as well as to keep methane concentration in mine workings at safe levels. Due to mining and geological conditions in Polish mines, pre-mining methane drainage is conducted to a small extent. It is usually used to reduce outburst risk. Low permeability of coal seams allows for obtaining satisfactory effectiveness during and after mining a longwall. Development works also do not take into consideration pre-mining methane drainage. This article presents two methods of methane drainage during mining. The first method is connected with drilling cross-measure boreholes from tail entries to an unstressed zone in roof or floor layers of a mined seam. That is the main method used in Polish mining, where both the location of drilled boreholes as well as their parameters are dependent on mining and ventilation systems of longwalls. The second method is connected with drilling top drainage headings in seams situated under or over a mined seam. This paper compares these methane drainage methods with regard to their effectiveness in Polish mining conditions. High effectiveness of methane drainage system with different ventilation and methane drainage systems has been proven.
