DEZ Dam with a capacity of 520MW, the reservoir volume is V=3͵200͵000͵000m3. At Dez Dam (southwest Iran) with a reservoir height of 198 m (+354.0m), the sediment height has increased to 104.5m (+266.5m). After 65years (1960), the upstream flow carries sediment that occupies the useful volume (55%H and 30%V). The first solution can be described as increasing the intake level (from +270.0m to +305.0m) by submerged steel rings. The flexible structure will be installed on narrow concrete slots. This path is used to move the intake stop locks every year. The second stage solution can be proposed to discharge the concentrated flow from the catchment area (+266.5 m) into the irrigation sluiceways (+222.7m) by TPM. Compressed air performs two important hydraulic tasks. First stage: Using a 13-bar pressure system, the concentrated layers (1.45 t/m3) are blown from the level of +266.50m to the +212.7m. This can convert the sediment of 1.45t/m3 into a liquid of 1.25t/m3. Next: TPM equipment creates a column of compressed air (13-bar) that can be stable against the water column (130m). These boundary conditions regulate the dense flow. The point of interest is the balance between TPM and the water level behind the dam. Water tries to pass through the irrigation valves, but TPM, by controlling the pressure, only allows the dense sediment flow to pass. This research presents the compressed air column to move the dense sediment layers.