In general, for small width or clos

In general, for small width or closed fault fracture zones, if they do not extend very deep, or if they extend very deep but are perpendicular to the river, do not form a seepage channel between the upstream and downstream, and do not have a significant impact on the strength and compressive deformation of the bedrok, the depth to be dealt with is generally shallow. Usually the method of excavation and backfill concrete is used to deal with, can meet the requirements. The broken and weathered rock on both sides of the fault is cleaned up at a certain depth until fresh rock is exposed, and then the concrete is backfilled. When necessary, contact grouting should be laid after the concrete collar has contracted, so as to facilitate the combination between the dam body and the bedrock and the transfer of stress.