Influence of Clay Minerals on Instability of Soft Metamorphic Rock Slope in Jinpen Reservoir

YU De-hai; PENG Jian-bing

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Influence of Clay Minerals on Instability of Soft Metamorphic Rock Slope in Jinpen Reservoir

- Influence of Clay Minerals on Instability of Soft Metamorphic Rock Slope in Jinpen Reservoir
- Bulletin of Soiland Water Conservation Vol. 28, Issue 5, Pages: 45-49(2009)
- 作者机构：
  
  1. 大连海事大学道路与桥梁工程研究所,辽宁,大连,116026
  2. 长安大学地质工程与测绘学院,陕西,西安,710054
- 作者简介：
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- Published：2009
- 稿件说明：
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YU De-hai, PENG Jian-bing. Influence of Clay Minerals on Instability of Soft Metamorphic Rock Slope in Jinpen Reservoir[J]. Bulletin of Soiland Water Conservation, 2009, 28(5): 45-49.
DOI：

YU De-hai, PENG Jian-bing. Influence of Clay Minerals on Instability of Soft Metamorphic Rock Slope in Jinpen Reservoir[J]. Bulletin of Soiland Water Conservation, 2009, 28(5): 45-49. DOI：

摘要

针对西安市金盆水库软弱变质岩边坡的地质条件

在细致分析黏土矿物的主要特性及形成机制的基础上

从微观到宏观的不同尺度

系统研究了黏土矿物对软弱变质岩边坡失稳的影响。结果表明

软弱变质岩成因复杂

矿物成分多样

水稳定性差

易于生成黏土矿物; 而次生黏土矿物的形成将引起源矿物、矿物集合体及岩块特性的显著变化

诱发岩石向松散介质转化

并触发黏土矿物在宏观结构面中的聚集和泥化夹层的形成

导致结构面及岩体强度衰减

进而促进边坡变形破坏

对边坡演化及失稳的贡献显著。

Abstract

In view of the geological condition of soft metamorphic rock slope in Jinpen Reservoir

the influence of clay minerals on soft metamorphic rock slope is systemat ically studied through a careful analysis of the main properties and formation mechanisms of clay minerals

from micro to macro levels. Results show that soft metamorphic rock can easily produce clay minerals because of such characteristics as complex origin

various mineral composition

and weak water stability. However

clay minerals in rock may bring about marked changes in some properties of parent minerals

mineral aggregation or rock and promote rock to evolve toward loose medium. Moreover

the illuviation of clay minerals in macro discontinuities and the formation of mudded intercalation will cause the strength of discont inuities and rock mass to decrease. To sum up

clay minerals may accelerate deformation of slopes and their contribution to slope evolution and failure is notable.

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