摘要
在地质调查及大量岩土实验的基础上,研究了巴东县新城区中三叠统巴东组二段T2b2紫红色泥岩的膨胀崩解特性。测定了强风化泥岩的矿物及化学成分,对岩石在不同状态和不同浸水时间条件下表现出的快速胀裂、崩解现象进行了细致观察,同时对不同浸水状态的岩石进行了强度试验,发现该区紫红色泥岩风化后具有微弱的膨胀性,以及沿微裂面快速崩解的特性,其膨胀崩解特性与岩石的物理状态密切相关。
Based on geological investigations and rock and soil experiments,the slaking expansibility of aubergine mudstone(T2b2) is studied in this paper.The mineral and chemical component of strong weathering mudstone is determined.The quick expansion and slaking phenomenon of the rock was particularly observed in different states and in undate times,and the strength tests were carried through. The weathering aubergine mudstone was found to have low expansibility after weathering and quick slaking characteristic along microscopic fissure.The slaking expansibility is nearly related with the physical state of the rock.The research result is of certain theoretical and practical significance,and thus is useful for district building in the Reservoir of Three Gorge Project.
出处
《地质科技情报》
CAS
CSCD
北大核心
2002年第4期77-80,共4页
Geological Science and Technology Information
基金
国务院三峡移民开发局攻关课题"三峡工程库区巴东县新城区地质灾害试验场的建立和综合治理示范研究
关键词
三峡库区
巴东地区
紫红色泥岩
膨胀
崩解
red mudstone
expensive
disintegration
qualitative experiment
relative factor
