一、跨断层形变测量的理论基础长期研究表明,地震的发生与断层活动密切相关.构造地震是地球动力学过程的一种表现形式,与活动断层互为因果关系.因而对活动断层进行监测,无疑可获取地震前兆信息.实验和观测表明,断层两侧三度空间的相对运动幅度远大于连续岩体应变信息的幅度.因此跨断层测量的效果优于不跨断层测量,其信息量和信噪比均有很大幅度提高,是 Theoretical basis of cross-fault deformation measurement Long-term studies have shown that the occurrence of earthquakes is closely related to the fault activity.The tectonic earthquake is a manifestation of the geodynamics process and is mutually causal relationship with the active fault.Therefore, monitoring the active fault, Undoubtedly can obtain the information of earthquake precursors.Experiments and observations show that the magnitude of the relative motion of the third space on both sides of the fault is much larger than that of the continuous rock mass.Therefore the effect of cross-fault survey is better than that of the non- The noise ratio is greatly improved, is