Modeling method of underground roadway intersection processing based on binary space partition tree

Aiming at the intersection processing of underground mine scene roadway in 3D virtual environment, a modeling and rendering system of mine roadway 3D virtual environment based on WebGL is constructed. The binary spatial bifurcation tree （ＢＳＰ） is used for roadway intersection modeling, which realizes the construction and rendering of three-dimensional solid geometry of underground roadway, and effectively reduces the modeling complexity. Based on WebWorker multi-thread real-time modeling and loading method of large-scale scene model, a strategy for separating scenario management from modeling is carried out, which can not only build the roadway model dynamically according to the parameters, but also avoid the blocking problems such as user jams and unfriendly interface operation due to the long modeling and loading time of large scene models over 1 G, such as the number of vertices and texture, so as to improve the effect and performance of scene interaction and real-time roaming.