BEIJING, Jan 16 (Reuters) - Chinese authorities in Tibet have detected problems, including cracks, at five out of 14 hydropower dams that they have inspected since a magnitude 6.8 earthquake rocked the southwest region last week, an emergency official said on Thursday. Volcaholic 🌋 Earthquake Alert on Telegram by @EarthquakeAlertTelegram A @grttme project - Other backups: @Hallotme