Abstract: The construction of BIM model of mine drainage system is an objective requirement for the development of mine production information modernization.Affected by the daily drainage management requirements of mining enterprises,the model cognition is multi-tiered,and a panoramic model with detailed structure is needed to meet the application requirements of different levels.Therefore,this paper constructs a multi-scale BIM model of mine drainage system from the perspective of semantic characteristics,and puts forward the concept of "Topological Level of Details" to explore the changes of topological relations between models based on multi-scale modeling,so as to build a parameterized family library of mine drainage system and realize multi-scale application scenarios.Through experimental demonstration,this method can be associated with various processes of design,construction and daily management in the whole life cycle of mine drainage system,which helps to increase the hierarchical clarity of the model,reduce the redundancy of details,improve the work efficiency of modeling,and provide data support for meeting the comprehensive application requirements of BIM management of mine drainage system.

Key words: mine drainage system,multi-scale modeling,BIM,LOD,topological level of details