Research On Construction Simulation And Real-time Control Analysis For The Phase II Concrete Gravity Dam Of Xiajiaba Hydropower Project

For hydraulic and hydroelectric projects located at large rivers, the process and quality of the dam construction has a critical influence on the whole project construction. High concrete gravity dam construction is complex, dynamic and difficult. For high-standard and high-intensity continuous construction needs, it is harder to optimize and control the construction scheme in real time. In this dissertation, the construction system of high concrete gravity dam was analyzed integrally. Using the hydropower engineering science, computer science, simulation technology and system engineering theory, with Xiangjiaba hydropower project, the methods of construction simulation and real-time control for the high concrete gravity dam were proposed and carried out.In general, the following three achievements are obtained in this dissertation:(1) The construction features of the high concrete gravity dam under complex constrained conditions were generalized and decomposed systematacially. According to the technological process and the operating mechanism, the mathematical logic models of construction simulation and real-time control with tower belt cranes, cable cranes and gantry cranes were set up,which provides theory foundation to reveal the interal rules in the construction process of high concrete gravity dam.(2) The principle and implementation of the construction dynamic simulation were elaborated. Then, based on the real-time simulation, the method of the construction scheme regulation and schedule control was put forward for the high concrete gravity dam. The practical scheduling control procedure of high concrete dam construction operations is brought out based on theory of cybernetics.(3) Based on the presented methodologies and techniques, the corresponding software system DSim_XJB was developed with the Xiangjiaba project. It could accomplish the real-time interactive simulation and control of dam construction, and was an effective technical platform for analyzing construction schemes.Using the system, the simulation computation, the result evaluation and the contronl analysis of the phase II concrete gravity dam of Xiajiaba hydropower project were completed. Finally, the effective measures of optimizing the construction progress were proposed and used to guide the practical construction. The above outcome could offer the useful technical indexes of the construction system accurately and quickly to engineers and managers, such as concreting sequences, concreting machines and concreting times of different dam blocks. The whole complex construction process was demonstrated by the 3D dynamic visualization. These results improve the level and efficiency of the construction organization design and the construction schedule control, and have provided technical supports for determining the construction scheme of the phase II concrete gravity dam of Xiajiaba hydropower project.