Page - 801 - in Book of Full Papers - Symposium Hydro Engineering

4. CASE STUDY A project is located in the southwest of China. The max dam height is 285.5m. The dam body is divide into more than 2000 storehouses. One of a construction storehouse is take to simulate the process. The block located in 7# section layer 38, height 512.0m~518.0m. The volume is 3069 m3, the storehouse area is about 1023 m2. In initial plan, five cable cranes, five lateral unloading cars, two scrapers and two vibrators is arrange. Fig. 3 A construction surface scene When the cable crane operation speed are v1 =(7.5m/s,3.5m/s), v2=(6.5m/s,3.0m/s), v3=(5.5m/s, 2.5m/s), the best operation path into the storehouse as shown in Figure 7. Fig 4 Optimized Cable Crane Path After deduction of scene simulation, the total pouring time is 26.2h. The operation parameters of every cable crane is count and list in Table 4 (before optimization). In addition, the collision result as shown in Table 5. The statistic results demonstrate that collisions are mainly cause by cable crane, which also reduce the efficiency. By analysis the layout of cable crane, crane 2#~4# are located upward of block, crane 1# and 5# may effect by middle cranes. Thus, a new plan is carry out by reducing the cable crane number, and simulate again. The work time of each cable crane is list in Table 4 (after optimization). The total pouring time reduced to 23.23h. 801