A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Underground mining method for unexploited coal in boundary open-pit mine
An underground mining method for unexploited coal in a boundary open-pit mine is provided. A shaft construction platform is arranged at one rock step to two rock steps above a coal seam. Intermediate bridges are built starting from a pit bottom. Mining area clay is laid on a working slope where no intermediate bridge is built and on a side slope with an outcrop of the coal seam as a sealing layer to seal the slopes. Auxiliary vertical shafts and main inclined shafts are dug. The pit bottom is dug downward to form a digging space on a side close to the working slope between two adjacent ones of the intermediate bridges, and clay is filled into the digging space to form an artificial water barrier layer. A roadway communicating the main inclined shafts and the auxiliary vertical shafts is constructed, and a coal seam stope face is arranged.
Underground mining method for unexploited coal in boundary open-pit mine
An underground mining method for unexploited coal in a boundary open-pit mine is provided. A shaft construction platform is arranged at one rock step to two rock steps above a coal seam. Intermediate bridges are built starting from a pit bottom. Mining area clay is laid on a working slope where no intermediate bridge is built and on a side slope with an outcrop of the coal seam as a sealing layer to seal the slopes. Auxiliary vertical shafts and main inclined shafts are dug. The pit bottom is dug downward to form a digging space on a side close to the working slope between two adjacent ones of the intermediate bridges, and clay is filled into the digging space to form an artificial water barrier layer. A roadway communicating the main inclined shafts and the auxiliary vertical shafts is constructed, and a coal seam stope face is arranged.
Underground mining method for unexploited coal in boundary open-pit mine
CHEN SHUZHAO (author) / LIU FUMING (author) / CHANG BO (author)
2023-11-21
Patent
Electronic Resource
English
Geotechnical Problematic of Coal Mine with Underground Mining
| British Library Conference Proceedings | 2002
Method and device for determining mining boundary of open pit coal mine
| European Patent Office | 2024
Method for utilizing underground coal gangue of underground coal mine
| European Patent Office | 2023
| DOAJ | 2017
Numerical method of analysing influence of underground coal mining on mine structure
| British Library Conference Proceedings | 1994