3.2.2. Flow Rate of Leaked Tailings

Figure 9 depicts the flow rate distribution of leaked tailings after establishment of debris blocking dams at different distances downstream of initial dam. The flow rates are 10.3 m/s in all three cases before crossing the dams, and the maximum flow rates are all located at the valley near Village I. Meanwhile, the maximum flow rates downstream of the debris blocking dams are all found at the valley mouth near the upstream side of Village III. After setting up the debris blocking dams, the maximum downstream flow rates also decrease accordingly.

**Figure 9.** The maximum flow velocity distribution of leaked tailings flow with debris blocking dams at different distances. (**a**) 1000 m away from initial dam; (**b**) 600 m away from initial dam; (**c**) 400 m away from initial dam.
