underground mine 3d model

Create a realistic modular 3D underground mine digital twin from the supplied model. Preserve original geometry, scale, materials, and named objects where possible. Add an interactive Three.js simulation layer for subsidence, roof collapse, rockslide, crack propagation, vibration, and sensor displacement. Keep terrain, geological layers, tunnels, chambers, shafts, pillars, supports, debris, collapse zones, and sensors as separate controllable groups. Add exactly eight labeled monitoring nodes N1-N8 with movable mounts, optical transmitter/receiver pairs, 3x3 receiver panels, PZT vibration elements on selected nodes, displacement vectors, warning colors, event toggles, severity controls, and an isometric cutaway camera.