《工程地质专业英语》__精品.doc

《工程地质专业英语》教学大纲 课程代码： 课程名称：工程地质专业英语 学时安排：总学时36 学分： 2 适合专业：工程地质 先修课程：《大学英语》 ， 《工程地质学》 ，《工程岩土学》等 教材：〈工程地质专业英语〉郑孝玉编，吉林大学校内讲义，2005，7 参考书： 编写人： 教学目的和要求 工程地质专业英语是工程地质专业4年级学生的选修课，是在学生学习和掌握了基础理论课，专业课及大学英语之基础上为培养和提高学生专业英语能力而设置的。通过讲授和与学生交流为他们灌输一些相关专业词汇，表述方式及科学文献的翻译、课程写作技巧和规范等。为将来学习和工作储备一些相关知识。 课程内容概要 本课程教学内容 The Engineering Properties of Rocks rock index properties Certain index properties of rocks are of particular importance to the engineering, which are defined below. Specific gravity (Gs and Gb). Gb is the specific gravity of the solid mineral material of the rock by itself. Gb is the specific gravity of the complete rock, grain plus voids, with the voids empty except for air. Both are defined as a weight per unit volume. Saturation moisture content (is). This is the total amount of water present in a rock with the voids full. The ratio of weight of water to dry weight of rock sample, expressed as a percentage, is the saturation moisture content (is). Moisture content (W). This is the amount of water normally present in the voids of a rock , again expressed as a percentage (see is) above. Rocks are rarely saturated with water, thus in normal circumstances w is less than is. Porosity (n). This is the ratio of volume of voids in a rock total volume of the sample. It is expressed as a percentage; 10% average, 5% is low and more than 15% is high. The factors that control the porosity of terrigenous sedimentary rocks and soils are as follows: The degree of cementation The sorting of the sediment The packing of the grains The shape of the grains Water-yielding capacity. Not all of the water in a rock can be removed from it by flow under the force of gravity. Some is held as a film on the surface of the grains by capillary forces. Permeability (k). This is a measure of the fluid conductivity of the rock for a given hydraulic gradient. basic characteristics of soils 2.1 the nature of soils The destructive process in the formation of soil from rock may be either physical or