【摘要】 汶川大地震与龙门山构造带紧密相关。构造带的分布和发育程度控制了大地震的主要范围和余震范围。构造带的推覆构造特征很可能控制了地震震源深度、震中区与烈度区的不同位等特征。构造破碎带的发育程度和次要断裂的发育程度及地形条件是引起次生灾害的主要原因,余震及天气条件是引起次生灾害重复率高、延续时间长的重要因素。灾后重建工作应充分考虑这些地质与气候条件。更多还原

【Abstract】 The huge Wenchuan earthquake is closely related to the Longmen tectonic belt.The distribution and the developing degree of this belt control a large area of the main shock and its aftershocks.The characters of the nappe structure may control the locations of the focus and epicenter as well as the other features.The development of the broken rocks of the main faults and the minor faults and the special attitude of the topography are the main factors for the secondary disasters.更多还原