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本文对非均质地壳的现代形变和破裂过程,构造体系与地震体系,前兆体系与破裂信息以及我国大陆区的强震破裂带(破裂区)与破裂网等问题进行了探讨。认为强震的发生过程不是孤立的,是现代构造活动中的一种高速、高能弹性破裂(或再破裂)体系的一部分。强震破裂网的骨架主要取决于地壳强度的非均质性;而区域破裂的方式、优势方向和动态主要取决于区域应力场的变化。因此,地震活动有网络体系性,前兆效应也应有网络体系性。这类问题的研究对前兆观测、分析震情监视预报等工作都有重要的实际意义。
In this paper, the modern deformation and rupture processes, structural and seismic systems, precursor systems and rupture information, as well as the strong earthquake rupture zone (rupture zone) and rupture net in the continental area of China are discussed. It is considered that the occurrence of strong earthquakes is not isolated, and is a part of high-speed, high-energy elastic fracture (or re-rupture) system in modern tectonic activities. The skeleton of a strong earthquake rupture network depends mainly on the heterogeneity of the crustal strength. The mode of regional rupture, the predominant direction and the dynamics depend mainly on the changes of the regional stress field. Therefore, the earthquake activity has network system, and precursor effect should also have network system. The research of such problems has important practical significance for precursor observation and analysis of earthquake monitoring and forecasting.