关键词: 微动勘探技术, 大坝隐患, 病险水库

Abstract: Micro tremor exploration technique can be used to detect underground cavity, active fault, overburden thickness, bedrock surface shape, karst cave and so on in object region. Taking Gaoquan Reservoir in Jiujiang City, Jiangxi Province for example, we introduced the field line layout, data collection, data processing and analysis and results interpretation of micro tremor exploration. The practice indicates that micro tremor exploration technique is a simple and quick geophysical prospecting method, which has no special requirements for observation environment and causes no damage to environment. The method can timely and effectively detect latent hazards of these defective reservoirs and dams and guide the treatment of these hazards.

Key words: micro tremor, latent hazards of dams, defective reservoirs