There is a decent explanation in Glacier Man Science 30 Oct 2009:
Vol. 326, Issue 5953, pp. 659-661. (alternative link)
Norphel’s idea was to divert the lost winter
water from its course down the mountain,
along regularly placed stone embankments
that would slow it down and allow it to spread
and trickle across a large, shaded surface
depression a few hundred meters from the village.
Here, the slowed water would freeze and
pack into a glacier that would begin melting
when the sun rose high enough in spring to
expose the thick ice
Norphel has built nine glaciers since that
first one, which he began in the late 1980s
and worked on until 1994. They average
250 meters long by 100 meters wide; the
Phuktse glacier remains the largest. Norphel
estimates that each one provides some 6 million gallons (23,000 cubic meters) of water,
although there has been no accurate analysis to
date, and the undulating ground makes it difficult to guess the volume of ice in each glacier.
Each artificial glacier is built using local
labor and materials for about 3 to 10 lakh
Indian rupees (6000 to 20,000 US dollars),
depending on the size and site, compared
with about US$34,000 for a cement water
reservoir, Norphel says.
Personally, I wouldn't call these glaciers. It is more that water is being dammed so it freezes rather than runs off, and stays frozen into the spring then eventually melts before the end of the season.