- Tytuł:
-
Study on the possibility of using artificial pillar to replace the protection coal pillar of the preparation roadways during the mining process at underground coal mines in Quang Ninh region, Vietnam
Badanie możliwości zastosowania sztucznego filaru do zastąpienia ochronnego filaru węglowego na drogach przygotowawczych podczas procesu wydobycia w podziemnych kopalniach węgla w regionie Quang Ninh w Wietnamie - Autorzy:
-
Cuong, Dinh Van
Thanh, Tran Van
Tuan, Nguyen Anh - Powiązania:
- https://bibliotekanauki.pl/articles/318747.pdf
- Data publikacji:
- 2019
- Wydawca:
- Polskie Towarzystwo Przeróbki Kopalin
- Tematy:
-
podziemne kopalnie węgla
Wietnam
filary
underground coal mines
Vietnam
pillars - Opis:
- The coal reserves in protection pillar of roadways are expected to be left in the mining process in underground mines in Quangninh coal basin which is relatively large (about 16% of the total reserves). If it can be exploited, it will help to save non-renewable coal resources, reduce the cost of preparing roadway meters, extend the mine life and increase the efficiency of construction investment. In the world, in order to reduce coal loss in protection pillar of roadways, mining technology to exploit and use artificial protection pillars are quite popular. Accordingly, in order to simultaneously exploit coal in the protection pillar and maintain the transport roadway as a ventilation roadway for the longwall in below level, the post-mining coal pillar will be replaced by artificial pillars formed from the stone backfill cribs, columns, metal cribs, chemical materials or low-grade concrete mortar mixes formed from fly ash, bottom ash of thermal power plants, combined crushed waste rock and a cement additive,... This paper will evaluate the possibility and propose a number of mining technological scheme as well as the type of construction materials suitable for artificial columns.
- Źródło:
-
Inżynieria Mineralna; 2019, 21, 2/2; 192-198
1640-4920 - Pojawia się w:
- Inżynieria Mineralna
- Dostawca treści:
- Biblioteka Nauki
Artykuł