匈牙利布达佩斯地铁4号线黏土岩的工程地质性质  

Engineering Geological Characters of Claystone in Budapest Metro Line 4,Hungary

作　　者：吴益平[1,2] P．Gorog A．Torok 

机构地区：[1]中国地质大学工程学院,武汉430074 [2]布达佩斯技术与经济大学土木工程学院,匈牙利布达佩斯1111

出　　处：《地质科技情报》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

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.

关 键 词：布达佩斯地铁 黏土岩 矿物成分 力学性质 

分 类 号：P578[天文地球—矿物学] P642.114[天文地球—地质学]