Batch calculation method for storage capacity of river channel along-way groove through complex river type section method

The invention relates to a method for batch calculation of the storage capacity of a river channel along the way through a complex river section method, and the method comprises the following specific steps: arranging sections according to a sequence, organizing the upstream and downstream of each main stream, branch stream and branched channel reach from the left bank to the right bank according to a tree structure, and arranging the channel reaches according to a preorder traversal mode, thereby arranging the sections; processing a section where the branch converges into the main stream, adding a section which is completely the same as the closest section of the upstream at the river mouth of the branch, and giving the distance between the two sections; ranking the information and related calculation data into a table; the distribution of the cross section water passing area at the bifurcated is processed; and according to the processed water passing area of each section, calculating the storage capacity of