IDENTIFIKASI PERMASALAHAN KECEMASAN SOSIAL DAN PENANGANANNYA PADA REMAJA DI PANTI ASUHAN





Stability Control of a Roadway Surrounding Rock during the Cutting and Pressure Relief of a Coal-Bearing Roof at a Shallow Mining Depth

Recent years have seen the widespread use of a new gob-side entry retaining technology, namely, automatic roadway forming based on roof cutting and pressure relief.However, because of the complex geological conditions, stability control methods for the surrounding rock remain unexplored.In this paper, through theoretical analysis, field measurement

read more