Comparative analysis of three-dimensional geological model construction methods of coastal bedrock City:taking Qingdao as an example
3D geological model construction plays an increasingly important role in geological environment evaluation,deep geo-logical prospecting and urban underground space development and safe utilization.Its technological breakthrough provides an im-portant geological support for the development of transparent cities and smart cities.As a representative of the coastal bedrock city Qingdao has successively used four methods to explore the advantages and disadvantages of the three-dimensional geological model construction method,which is cross-section interactive modeling,Bentley MicroStation v8i platform modeling,explicit structural interface modeling and implicit modeling.It is concluded that the explicit structure interface modeling method is the most mature modeling method at present,and the model construction effect is good,but it is difficult to modify and update;The implicit modeling method develops lately,and the model updating speed is fast.It will become the future main flow modeling theory method after adjusting and improving the algorithm in combination with the actual geological situation.In addition,the constraints of 3 D geological modeling standard stratum and model scale are not clear enough,so corresponding specifications should be issued as soon as possible.
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