From the point of view of construct

From the point of view of construction, this treatment method is technically feasible, but in the backfill concrete after excavation, special attention must be paid to the corner parts of the vibration compaction, to prevent leakage of vibration and overhead.If the fault fracture zone has a large depth to deal with, in order to overcome the difficulty of deep excavation and prevent the collapse of rock blocks on both sides, a large diameter drill (diameter of more than 1m) can be used to drill the hole, drill to the required depth, and then backfill concrete; Or dig a layer, backfill a layer, in the backfill concrete reserved shaft and inclined shaft, as the tunnel to continue to dig, use these channels to dig down, until the predetermined depth.