1Research and Application of Pre-Grouting Technology at Surface with Clay and Ce ment for Mine Roadway1-5
7Function and Principle of Connection Chamber between Horizontal Long Distance Excavation Mine Roadways19-20,18
10Research and Application of Soil Consolidation and Settling during Lacking Load Pre-Pressurization29-30,28
11Discussion on Technology of Backfill Along Goaf Side of Gateway in Fully Mechanized Caving Face31-34