摘要
匈牙利布达佩斯在建地铁4号线布达段广泛分布中渐新统灰绿色、黄褐色的黏土岩,黏土岩的工程地质性质研究对地铁工程的顺利实施意义重大。阐述了地铁4号线的工程地质条件,重点讨论了布达段黏土岩的工程地质性质。对黏土岩的X射线粉晶衍射测试表明黏土岩的主要矿物成分为伊利石、方解石、白云石、绿泥石、石英、云母、黄铁矿等,具有弱膨胀性。随着黏土岩风化程度的加深,颜色由深灰色向灰褐色变化。通过对黏土岩进行单轴和三轴压缩实验,发现黏土岩在天然状态下的抗压强度及抗拉强度均较弱,抗变形能力较差,风化带黏土岩的抗剪能力较弱,新鲜黏土岩的抗剪能力较强。
At present, a new line metro line 4 is under construction in Budapest. The longest part of metro 4 in Buda side will be built in grey claystone of Oligocene age. Research on engineering geological characteristics of claystone has a primary importance in the design and feasibility of metro 4 construction. This paper presents an engineering geological description of metro line 4, with special emphasis on the properties of grey claystone. X-ray diffractometry analyses have shown that claystones are mainly composed of illite, calcite, dolomite, clinochlore, quartz, muscovite and pyrite. The weathered degree is also marked by a color change from dark grey to brownish-grey. The slightly expandable clay has lower anti-distortion capacity and smaller uniaxial compression strength and tensile strength, which are significantly less when the claystone is weathered.
出处
《地质科技情报》
CAS
CSCD
北大核心
2009年第1期113-115,共3页
Geological Science and Technology Information
基金
国家留学基金委与匈牙利互换奖学金项目
作者简介
吴益平（1971-），女，副教授，主要从事岩土工程及工程地质相关的教学及科研工作。
