Abstract:

Aiming at various disasters cased by legacy coal resources in room mining goaf of a large number of small coal mines in Ordos City, based on the analysis of the goaf disaster management difficulty, a innovative method was put forward to recycle the legacy goaf coal pillar using open-pit mining, reclamation land and recycling of fertile land are carried out at the same time, which can fundamentally improve the mined-out area surrounding ecological environment. According to the current goaf disaster situation in Nalinmiao mining area of Yitai Group, a detailed program governance was developed. This practice can provide a reference for similar room mining goaf governance.

Key words: room mining goaf, disaster control, open-pit mining, coal pillar recovery