The context of the word "meander" is their version of "habitat" or "enclosure". The large enclosures will give the elephants different terrain and natural objects to manipulate throughout the day. The last versions I saw the staff were going to have the flexibility to make the enclosures as large or as small as needed at that time. By this I mean that, on any given day there may be a reason to separate out some individuals from one another. This could be for breeding, birthing, illness, etc. If the previous post is correct and the facility will hold 9 Africans and 9 Asians, it is highly unlikely that their will only be two groups at all times. Captive elephant husbandry just doesn't work that way.
The goal of the Center is not only breeding. It will be used for elephant keeper training school, bull holding, holding for other elephants in which their zoos are eliminating their elephant programs, and research.
In a way, it is unfortunate that the facility will not be open to the public, but it will actually be better for the elephants. Having worked zoos, many times money goes to upgrade the visitor experience instead of the exhibits. Also, without guests there is no time table for the animals to be "on exhibit" for guest viewing. This can be limiting for keepers who may only have short periods of time in the beginning of the day or at the end that they can do their hands on husbandry with the elephants.