A Study on Construction System Coordination Simulation of High Face Rockfill Dam
|Course||Hydraulic Structure Engineering|
|Keywords||Gushui project high rock-fill dam system simulation simulation modeling construction coordination|
The construction process of high rock-fill dam is a complex system. It involved many factors such as construction schedule, placement of dam access roads, filling workspace, arrangement of borrows, construction organization of workface, machines, etc. It also nearly related to environment factors such as raining, hydrology characteristic temperature, and so on. It is hard to accurately obtain some important parameters in designing of construction for high rock-fill dam with conventional method, such as the intensity and density of haulage. The technique of system simulation is an efficient method to deal with this kind of problem.This paper describes in detail construction processes of the four sub-systems in rock-fill dams. They are excavation, haulage, placement of rip-rap and material planning with transportation sub-systems, which are interactional. In the construction coordination aspect, In traditional construction simulation model of rock-fill dam, the coordination of the filling intensity between different fill zones is ignored. In this paper, the filling coordination of different materials is studied, a simulation model considering coordination of the filling intensity between different fill zones is presented based on the logical relation of activities in PERT, in addition, the concepts of Maximal distribution intensity of material and Probable maximum filling intensity are presented. Based on the model, a software of system simulation for construction of rock-fill dam is programmed with MS VC++6.0 and MS VC++7.0.Finally, Based on the substage-zonning filling design of Gushui rock-fill dam, the filling simulation software is adopted to simulate the filling process. The simulation results of the scheme was offered to demonstrate the filling performance and filling process of under different rain conditions and provided reasonable reference for construction. At the same time, the application to Gushui rock-fill dam shows the validity of the idea and the efficiency and practicability of the software.