I am following this closely, I was up at Martingrove last week scouting for a video but there is nothing going on really. I spoke with a worker who was installing pretty cool settlement sensing equipment as the soil changes from bedrock under the highway to a more shale style subsurface. I heard that the tunnel is about 25m deep but can't confirm that. Would be nice actually to be given a z value next to the name on the tracker! It was also suggested that they won't dig down from the station site until the bores have passed. It looks ready to go though. Secondly, there are a lot of works going on around that site as I did not know they renovating a large underground reservoir below the park north west of Martin Grove and Eglinton. At Kipling they are simply moving and updating utilities right now I guess. Maybe some pre-shoring work.
Yes, unfortunately, there's not much activities to see above ground once the station headwalls are built. The TBMs will then bore through the station headwalls and continue onwards. Once that's done, the work will start again to dig down between the 2 headwalls and build the platform first, followed by the concourse, and finally the entrance building and emergency exit building.
For reference, here is the typical underground station design:
It does indeed look like the tunnels will be 25 metres below the surface, meaning a fairly long decent to the concourse level. Also, the following is from the Environmental Assessment Design Plates from May 2020 and it seems to line up on average with the 25 metre below surface information:
At Kipling, they are definitely drilling the headwalls for the station. They had closed the 2 southern most lanes of Eglinton Ave W to drill the headwalls for the eastbound tunnel. It looks like they have completed that and have now closed the middle 2 lanes of Eglinton in order to drill the headwalls for the westbound tunnel.
Final station layout for Kipling requires Eglinton Ave W to be shifted 3 metres to the south to reduce the amount of trees that would need to be cut down on the north-west corner of the intersection. Kipling is also the only underground station where the tunnels are actually entirely beneath the roadway. All other underground stations are on one corner of the intersection.
Last note for any enthusiasts for this project, there's another open house scheduled for November 2nd. This time it's going to be virtual, not sure why they switched back. They had their last update in person, if I'm not mistaken.