В общем, о закрытии этого участка информация официальная и подтверждённая.
Но сообщение:
"Just came back today from a camping trip on the great wall.
As we heard that Simatai was closed, we arrived at Jinshanling and hiked to hearly the end of the Jinshanling section until we arrived at a tower and spent the night there. The next morning, we continued into the Simatai section. There were no guards or any barriers blocking the way. We walked all the way until just past the suspension bridge. Just after the bridge, we went to the Dongpo Inn, where the owner contacted a car to drive us back to Miyun.
In short: You can still do the Jinshanling to Simatai hike."
на форуме:
http://www.greatwallforum.com/forum/sim ... 010-a.html меня обнадёжило.
Решила всё таки поехать туда, если нет ограждений прогуляюсь и по Simatai, если закрыт то только по Jinshanling.