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黄河中游地区广布着二叠系和三叠系红色砂,页岩地层。由于构造活动造成了一些软弱夹层,成为这些地区兴建水利水电工程的重要工程地质问题。本文仅对小浪底、龙门(舌头岭)和军渡等地的软弱夹层进行一些粗浅的讨论。 一、软弱夹层的特征 黄河中游地区的夹混层,主要是构造层间错动而形成的泥,(照片1)其特征有下列几点:
Permian and Triassic red sand and shale formations are widely distributed in the middle reaches of the Yellow River. As a result of the tectonic activities, some weak intercalations have become important engineering geological problems in the construction of water conservancy and hydropower projects in these areas. This article only discusses some weak interbed of Xiaolangdi, Longmen (tongue ridge) and military crossing. First, the characteristics of the weak intercalation Middle Yellow River mixed layer, the main structure is staggered formation of mud between the mud (Photo 1) The characteristics of the following points: