- Tytuł:
- Research on stability of rock mass and þ30 level surface construction works when re-exploiting the seam H10 at Mong Duong Coal Mine, Vietnam
- Autorzy:
-
Vu, Tien T.
Dao, Doan V. - Tematy:
-
re-exploiting
coal pillar
longwall
surface works
numerical simulation
Mong Duong Coal Mine
ponowna eksploatacja
filar węglowy
ściana
roboty nawierzchniowe
symulacja numeryczna
kopalnia węgla Mong Duong - Pokaż więcej
- Wydawca:
- Główny Instytut Górnictwa
- Powiązania:
- https://bibliotekanauki.pl/articles/58906262.pdf Link otwiera się w nowym oknie
- Opis:
- The re-exploitation of coal seams located near the ground is one of the solutions to increase output, reduce mining investment costs, and avoid wasting coal resources. The re-exploitation of coal seams will also cause instability of the surrounding rock mass and may affect surface construction works. Through the process of re-exploiting the longwall in seam H10 at Mong Duong Coal Mine, the authors have studied and evaluated the stability of the rock mass and þ30 level surface works (including fan station and gateroad). To achieve the results in this study, the numerical simulation model method and the analytical method were applied. The model analysis results have determined that the displacement and deformation areas of the rock mass around the mining area correspond to the length of the cut in the strike direction of the longwall H10. The analysis and calculation results from the model show that the longwall in seam H10 can be re-exploited when leaving a protective coal pillar about 50 m from the center of the þ30 fan station at the east side; this distance ensures the stability of the rock mass that located near the ground and the surface works at þ30.
- Dostawca treści:
- Biblioteka Nauki
Artykuł