Although the automatic generation system of three-dimensional geological sections was well studied and implemented, the topology relationship between stratum and fault or collapse column was lack of consideration, and the sections were generated without further practical applications. To solve this problem, a topology analysis algorithm of the three-dimensional geological section data is proposed, and some useful functions, such as those querying the stratum thickness, calculating the shortest distance from the pickup point to the water-bearing stratum, are realized using the algorithm. The practical application in the Wangjialing coal mine shows the validity of the method.
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