Szczegóły publikacji
Opis bibliograficzny
Rules of monitoring and combating methane and fire hazards in gob of longwalls mined with caving in hard coal mines / Maciej MAZURKIEWICZ, Stanisław WASILEWSKI // W: 24th World Mining Congress proceedings [Dokument elektroniczny] : mining in a world of innovation : October 18–21, 2016, Rio de Janeiro/RJ, Brazil / Instituto Brasileiro de Mineração. — Wersja do Windows. — Dane tekstowe. — Rio de Janeiro: IBRAM, 2016. — S. 90–101. — Wymagania systemowe: Adobe Reader. — Tryb dostępu: http://www.wmc2016.org.br/BOOK_PAPERS/06_MINERAL_EXPLORATION_... [2016-11-02]. — Bibliogr. s. 101, Abstr. — Publ. w cz. Mineral Exploration
Autorzy (2)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 102033 |
|---|---|
| Data dodania do BaDAP | 2016-12-16 |
| Rok publikacji | 2016 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
Abstract
Statistics disasters that have occurred in recent years in Polish hard coal mines show that most of the events took place, or were initiated in the gob of longwalls mined with caving. The up-to-date solutions of monitoring the space of the gob focused on distribution of gases and fire hazard developing in the gobs show that the research methodology, based on the results of periodic measurements with hand held instruments and air, sampling for laboratory tests to assess methane and fire hazards in the gob is imprecise and the phenomena taking place in the gob are beyond the control or are poorly controlled. Therefore a new method for continuous monitoring of gases distribution in the gob within the system of automatic gasometry system has been proposed. The knowledge of changes of gob gases concentration, particularly methane, oxygen, carbon monoxide and carbon dioxide allows for the hazard assessment and can be the basis of his fighting. Mining by longwalls with caving under the conditions of methane and spontaneous fire hazards occurrence requires the selection of prevention measures to reduce the hazard. The most effective measure consists in the use of ash and slag produced by power plants mixed with process water from the mines or flotation tailings. The economic management of wastes from power generation in the prevention measures against fire hazard at longwalls positively influences the reduction of spontaneous fire hazard in the gob and, in the case of mining of seams in the surrounding of deposits with high methane contents, significantly reduces the inflow of methane into the gob. Administration of inert gases, i.e. nitrogen or carbon dioxide into the gob is also an important means of combating this hazard in the gob. The article shows how the proposed innovative method of monitoring gob gases, assisted by computer simulation methods, allows for current investigation of the effectiveness of the undertaken measures focused on combating methane and fire hazard in gob of longwalls mined with caving.
