影响黄河悬河稳定性的地质因素分析

The Influence of Geologic Factors on Stability of the Elevated Yellow River

从黄河下游地质构造格局方面来看,影响黄河悬河稳定性的地质因素主要有:近代和现代沉降中心决定黄河行河范围;黄河下游穿黄与临黄断裂影响堤防安全;构造单元影响河道的输沙和淤积等。活动性断裂与黄河的交汇处、构造单元的交接部位,往往是地质活动较频繁部位,应是黄河防洪的重点地段。

Viewing from the pattern of geologic structure of the lower Yellow River, the geologic factors that affect the stability of elevated river are mainly as follows: the sedimentation center in modern times determines the flowing scope of the Yellow River; the faults that cross and near the river situated in the lower Yellow River affect the security of embankments and; the tectonic elements affect the sediment transport and deposition of the channel. Usually the intersection of an active fault and the river and the connection of tectonic elements are the location of frequent geologic activities and should be a key section of flood control of the river.