The blasting construction of water conservancy projects is characterized by its long duration and large scale. However, traditional methods for blasting design and construction control are inadequate to meet the requirements of current water conservancy project development. Therefore, it is crucial to study and establish a platform-based, networked, and intelligent blasting design and control system with significant engineering significance. To achieve this goal, this research adopts a front-end and back-end separation method using the Angular framework and SpringBoot framework based on BIM(Building Information Modeling), WebGIS(Geographic Information System), and developed blasting design software. The system comprises an intelligent blasting design module, three-dimensional visualization module, digital blasting control module, as well as an intelligent safety evaluation and prediction/warning module. This integration enables intelligent blasting design along with comprehensive auditing functions throughout the entire process. Importantly, the system can select control points on the excavation contour line for intelligent blasting design based on actual site conditions. It generates blast design schemes that undergo review using a model parameterized dynamic joint cropping method before being uploaded. This approach promotes standardization, informatization, and digital management of the entire blasting process while enhancing real-time interactive collaboration among various units involved in designing, constructing, supervising hydropower stations. The application of this system in slope blasting and excavation projects at Yebatan Hydropower Station demonstrates its effectiveness in carrying out blast designs while improving control efficiency. Consequently, it provides valuable technical support for slope blasting designs during hydropower station excavations.