The swelling mudstone layer of mud and rocks should be repaired after the ra in Stargate timeline 15 concrete still though, and have confirmed that there is no leakage from a concrete timeline for still another.
Swelling of shale and clay layers should be repaired after a black lining and grouting concrete. And it has been confirmed that there are no leaks from the concrete lining.
Swelling of shale, mudstone and should be repaired after ด้ำ to you OK in concrete line นิ่งแล้ว. And has been confirmed to have no leakage down from the concrete lining.