某变质岩区岩体风化深槽特征及其形成机理

Characteristics and Formation Mechanism of the Weathering Groove in a Metamorphic Rock Area

同一部位同类岩体风化特征差异一般不悬殊,然而有些地区在合适的地质背景条件下,相同部位同类岩体局部会产生与周围差异悬殊的深风化现象.以某变质岩区岩体风化深槽为例,在论述风化深槽空间分布、风化状态、物质组成、物理力学性质等特征的基础上,分析其形成机理,简述其对拟建工程设计方案的影响并提出处理建议.

Generally speaking,the differences in weathering characteristics of the similar rock mass on the same position aren＇t too significant.But in some areas,in the proper geological background conditions,deep weathering would occur in the local parts of the same rock mass on the same position,which is in great difference with the surroundings.Taking the weathering groove in a metamorphic rock area for an example,the formation mechanism of the weathering groove is analyzed on the basis of discussion about the weathering groove characteristics such as spacial distribution,weathering status,material composition,physical and mechanical properties,then it＇s impact on the proposed project design and treatment suggestions are briefly described.