论文部分内容阅读
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。
The study on the engineering geological properties of the gray-green and yellow-brown clay rocks and clay rocks in the Buda section of Metro Line 4 under construction in Budapest, Hungary is of great significance to the successful implementation of the subway project. The engineering geological conditions of Subway Line 4 are expounded, and the engineering geology of the Budaang clay rock is discussed. X-ray powder diffraction tests on clay rock show that the main mineral components of clay rock are illite, calcite, dolomite, chlorite, quartz, mica and pyrite, which have weak expansibility. With the deepening of the weathering of clay rocks, the color changes from dark gray to gray-brown. Through the uniaxial and triaxial compression tests of clay rock, it is found that the clay rock has a weak compressive strength and tensile strength under natural conditions, a poor anti-deformation ability, a weak anti-shear capacity of clay rock in weathered zone, Shear strength of clay rock is strong.