Permanent mine bulkhead seal and method for constructing same

A method for forming a seal or bulkhead in a mine entry comprising the steps of:

• a. erecting a first wall across said mine entry;
• b. erecting a lower portion of a second wall across said mine entry, said second wall spaced apart from said first wall;
• c. providing at least one layer of filler material particles between said first wall and said portion of said second wall;
• d. saturating said at least one layer of filler with a binding material such that said binding material fills the voids between the filler material particles;
• and
• e. continuing erecting said second wall and providing at least one additional layer of filler material particles between said first wall and said continuing second wall and saturating said at least one additional layer with said binding material until said second wall is completely constructed and said binding material saturated filler material particles emplace the mine roof.

A method for forming a seal or bulkhead in a mine entry comprising the steps of:

• a. erecting a first wall and a second wall across said mine entry, said second wall spaced apart from said first wall;
• b. providing at least one gap in said second wall;
• and
• c. injecting a mixture formed by a binding material and particles of a filler material through said at least one gap into the space between said first wall and said second wall until said mixture emplaces the mine roof, wherein said binding material is a closed-cell foam, said binding material adhering the filler material particles to said first wall and second wall and to the floor, ribs and roof of said mine entry.