阿尔及利亚东西高速公路工程地质勘察研究

研究目的:阿尔及利亚东西高速工程浩大、工期紧、勘察工作量大,地形起伏、地貌单元众多、地层岩性复杂,加之异国的工程环境、欧洲标准规范、法语的语言环境等使得工程地质勘察难度大。现已建成通车运营检验后再对阿尔及利亚东西高速公路工程地质勘察进行总结研究,希望对实施类似地区的工程项目提供有益的借鉴。研究结论:通过分析得出:(1)项目不良地质主要为滑坡和岩溶,特殊性岩土主要为泥灰岩和膨胀土。(2)法国规范中无勘探点布置条文,需工程师灵活掌握。(3)旁压试验在构造物基础设计中是不可替代的;孔压水位计测试钻探中必须采用;深部位移监测技术对滑动面判定有定量的依据。(4)勘察报告和专业设计在文件编排方面融为一体,可读性强,便于设计审查和施工管理。

Research on Engineering Geologic Investigation of Algeria East-West Highway

Research purposes: For a gigantic project as Algeria East-West Highway,a tremendous amount of surveying needs to be conducted within a limited construction period.The natural factors such as hypsography,geomorphic units and formation lithology,and other external factors,for example,location of project in a foreign country,application of European standard,usage of French as working language,etc,make the engineering geological survey a rarely difficult task.A retrospective on the research of engineering geological survey of Algeria East-West Highway which has already opened to the traffic,is expected to offer beneficial references to projects that are to be realized in the similar regions. Research conclusions:The analysis allows to reach the following conclusions:(1)The unfaverable geological condition is mainly consisted of landslide and karst and the specific rock and soil is mainly formed by marlite and expansive soil.(2)The clauses stupulating no arrangement of reconnaissance point in the European Standards need to be neatly applied by engineers.(3)The lateral pressure test is irreplaceable for the structural design,the hole pressure test with water level gauge must be adopted in the drilling;and the deep displacement test can offer quantitive basis for the judgement of glide plane.(4)The readability of survey report and professional design that are combined in the filing facilitates design examination and constuction management.