You'll need bolts for this first, since they show where the dangerous spots are when thrown around. Load up on at least 5 bolts and use default 6 key to toss them ahead watching for sparks and weird sounds in the tunnels. Getting past is mostly about timing your moves when the lights dim and crackling gets quieter, and using protective gear with good electric resistance helps a ton. Good to know that many players stick to tunnel edges where anomalies tend to cluster less and always save before attempting risky crossings. If something seems completely impassable, there might be a debug console command to help but that's more of a last resort. Sometimes these barriers are actually tied to story progress or might be glitched, so maybe interesting to restart the game if nothing else works. Pretty important to watch your suit condition too since repeated shocks will tear through equipment fast, and keeping extra bolts handy lets you double-check paths when needed.