We propose a new mining method: point-pillar paste filling based on the combined advantages of room-pillarmethod and backfilling.
将房柱式开采和膏体充填开采的优点相融合,提出了点柱式膏体充填采煤方法。
2
The continuous wall junctions are connected by the methods of junction pipe method, junction plate method and section steel pillarmethod and good effectiveness has been gained.
连续墙墙段接头采用接头管法、接头板法和型钢柱法,均取得了较好的效果。
3
The paper is of important instructive importance to reduce loss and depletion by sublevel caving method without sill pillar.