Here is something that has just appeared on some other forums. Can't quite fathom out how it works.
http://www.mybeeline.co/en/p/effective-method-of-swarm-prevention
My guesses so far, based on googling.
1. The "acacia pasture" is likely
Robinia pseudoacacia bloom.
2. "Haneman grid" appears to be an Eastern European name for a queen excluder.
3. The description of a bee hive is consistent with the hives in this video:
https://www.youtube.com/watch?v=mjBCo40vlG4
In other words, the hive consists of two outer boxes, each with a separate flight entrance. The actual hive bodies (the author calls them "honey supers" and "brood supers") fit exactly inside these outer boxes. A framed queen excluder also fits precisely into the outer box.
With this information in mind, the comment "Brood supers are on the floor, in the box where the queen excluder is located" now makes sense. Also with this in mind, I suspect that the word "frames" in the comment "That wire mesh has frames in the same place where there were frames on a queen excluder" should actually be just "frame" (i.e. you must make sure the grid fits precisely inside the outer box).
So, it would seem:
1. Start with a hive in which the brood nest is at the bottom, with the queen, and the honey supers are on top. Typically there would be a queen excluder between the two sections of the hive.
2. Then, set the queen excluder aside, put the honey supers on the floor, put a mesh on top of it that the bees can't cross, put the brood boxes on top of that, and make sure that the bees can exit the brood boxes (e.g. Snelgrove board, Cloake board, etc, or use an open screen floor).
3. For two days, the forager bees will exit the brood boxes, and fly back to the bottom entrance, which is where the honey boxes are located. The various bees will be forced to do tasks that they would otherwise not be doing.
4. After two days, return the hive to its original state (brood boxes below, queen excluder, honey boxes above).