Design and Implementation of a Closed-Loop Management System for Construction Safety Hazards

To address the problems of delayed information transmission, difficult closed-loop rectification of hazards, and chaotic data archiving in traditional construction safety management, this paper designs and develops a construction safety hazard management system based on the WeChat Mini Program. The system adopts a front-end and back-end separation architecture of "WeChat Mini Program+Python Flask backend+MySQL database", integrates a face recognition-based personnel verification function, and establishes a standardized process covering real-time hazard reporting, automatic generation of provincial unified forms, real-time push of rectification tasks, submission of rectification responses, and closed-loop review, with instant message push implemented via WebSocket. The system automatically archives and stores the data of the entire rectification process, supports tracing historical records by project, time, and responsible person, ensuring accountability and process traceability. Experimental results show that all front-end functional tests passed with performance scores ≥90 and a user satisfaction rate of 90%; under extreme stress of 100 concurrent requests, the backend achieved an average response time of 4 ms, an error rate of 0%, and a throughput of 200 req/s; the message interface attained an optimal throughput of 279.5 req/s with an error rate of 0.2% at 50 concurrent requests, while all other interfaces maintained an error rate of 0%. By deeply integrating hazard inspection with personnel qualification management, the system realizes a mechanism transformation from manual, offline, after-the-fact to automatic, online, real-time across dimensions including hazard collection, rectification form generation, task assignment, rectification feedback, review closure, data archiving, data traceability, and personnel qualification verification, effectively improving the efficiency and precision of construction safety management and offering practical value for promoting the digital development of safety management.