一种新型红色夹泥成因机制的工程地质分析

Engineering geology analysis of the formation mechanism of a new red intercalated mud

以湖北某水电站坝肩岩体内发现的大量红色夹泥为例,以红色夹泥的矿物成分和化学成分分析结果以及物理性质测试结果为基础,结合现场调查资料,从构造、正常风化卸荷、斜坡变形、喀斯特垮塌等方面入手,综合分析得出了红色夹泥的成因是:红色夹泥是由于层状岩体中小型层状溶洞顶板岩体坍塌,造成围岩变形、拉裂,后期地下水携带泥质物充填形成。

Red intercalated mud is a familiar interlayer in hydropower engineering. Taking the red intercalated mud found in abutment of a hydropower plant in Hubei as an example, based on the result of mineral compositions, chemical compositions and physical properties, and combined with the local information, the authors find the formation mechanism of red intercalated mud after analyzing possible reasons of structure, normal weathering and unloading, slope distortion, and karst collapse. The red intercalated mud is filled into rock mass going with ground water because karst collapse leads to samdwich rock mass ripped.