1978—1979年,宁夏回族自治区进行固海扬水工程建设时,在中宁县附近开挖出保存比较完好的古地震剖面。此剖面上保留了中更新世以后的多次地震的活动遗迹,砂土液化所留下的内部层次变形和结构位移。此剖面的发现对研究该地区的地震活动性、发震构造特点、应力场变化、烈度评定和进行震害地质理论探讨的研究,均提供了很重要的宝贵资料。 From 1978 to 1979, when Ningxia Hui Autonomous Region undertook the construction of the Guhai pumping project, the well-preserved paleoseismic profile was excavated near Zhongning County. This section retains the activities of many earthquakes after the Middle Pleistocene, internal layer deformation and structural displacement left by sand liquefaction. The discovery of this section provides important valuable information for studying the seismicity, seismogenic structure characteristics, stress field changes, intensity assessment and the discussion of seismic geological theories in this area.