活动断层是指在最近数万年内仍有活动迹象的断层。它是具有地震发生潜能的地质构造。由于活动断层上一旦发生地震，它具有两种特殊的破坏机制足以对地上结构物造成严重破坏。能量不可能丢失，只要构造活动还在继续，能量就会增加。但是地质构造运动是非常复杂的，断层也会不断地变化，这种变化就叫断层活动性。
...藏关系-中国天然气全景网 关键词断层活动性；油气成藏期；断裂控藏；新近系地层；饶阳凹陷 [gap=1415]Key words: fault activity; oil-gas accumulation period; reservoir control by fracture; Neogene strata; Ra..
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断层活动性与分段 activity and segmentation of fault
The influences of fault activity on the project are mainly the influences of the deformation of faults and fault belt and tectonic stress field on the deep tunnels,and the influences of fault on the earthquake induced by reservoir.
断层活动性对工程的影响主要表现为断层及断层带的变形、断层活动构造应力场对深埋长隧洞的影响，以及对水库诱发地震的影响。
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现代地形资料可资鉴定断层活动性。
Recent topographic data are useful for identification of fault activity.
断层活动性研究及稳定性评价十分重要。
Therefore it is very important to study the activity of the fault and make a stability assessment.
断层活动性评价是研究区域构造稳定性的基础，它直接影响到水工建筑物本身的抗震安全。
The faults activity appraisal is a foundation for study of regional tectonic stability because it directly affects the safety of a hydraulic engineering structure against seismic activity.
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