The invention discloses a tunnel blasting quality evaluation and optimization method based on multi-
source data fusion, and belongs to the field of tunnel blasting quality evaluation, and the method comprises the steps: collecting and preprocessing multi-
source data of a tunnel blasting region; based on the preprocessed multi-
source data, performing blasting quality evaluation according to local back break, a blasting
contour line, average linear back break and
point cloud extraction to obtain a blasting quality
evaluation result; according to the blasting quality
evaluation result, the blasting quality is graded, and a comprehensive blasting
quality score is calculated and graded; and establishing a
database containing geological parameters, surrounding rock
response parameters and blasting process parameters, training through a
convolutional neural network model to generate a blasting parameter optimization scheme, and dynamically adjusting blasting parameters of the next cycle according to the comprehensive blasting
quality score. According to the method, the blasting parameter optimization and the quality evaluation process are closely combined to form a closed-loop
system, the specific situation in the construction can be reflected in real time, and the accuracy of the blasting effect is ensured.