Dike project is an important part of the flood control engineering system, so the research of risk evaluation method of dike project is of great significance for the protection of people's property and life safety, urban economy and sustainable development of the environment. Therefore, this paper establishes a two-dimensional cloud model for risk assessment of dike projects based on game-theoretic combinatorial empowerment. First of all, according to the statistical results of the data proposed from the flood inundation and destruction damage, infiltration damage, deformation and destabilization damage of the three dike failure modes for risk evaluation index analysis, through the representative and scientific risk evaluation factors, to build a comprehensive risk evaluation index system; Secondly, for the impact of too much subjectivity of data and too much interrelationship between indicators, the idea of combinatorial assignment based on game theory is adopted, and the calculation of indicator weights is carried out through the G1-C-OWA subjective assignment method and the CRITIC objective assignment method, which weakened the impact on the accuracy of the evaluation results to a certain extent; Then, according to the fuzzy and uncertainty characteristics of the risk index data of dike project, a two-dimensional cloud model is introduced, and the corresponding cloud digital features are calculated from the two aspects of risk probability and risk consequences, so as to improve the accuracy of the risk evaluation results and compare them with the standard risk cloud, and to determine the risk level of the dike project in a clear and intuitive way. Finally, the method is applied to the actual project of remote dike of Han River in the middle and lower reaches of Yangtze River for risk evaluation, and the evaluation results obtained are basically in line with the actual risk situation faced by the project, which verifies the reasonableness of the method and the value of its practical application.
