舟山地区工程勘察中的若干问题及对策  

Several issues and countermeasures for engineering investigation in Zhoushan

作　　者：涂荫玖[1] 吴道航[1] 阳栋[2] 于忠超 周莉苹[1] 

机构地区：[1]浙江宏宇工程勘察设计有限公司,浙江舟山316100 [2]同济大学地下系,上海200092 [3]宝冶集团有限公司,上海200941

出　　处：《工程勘察》2013年第8期25-29,共5页Geotechnical Investigation & Surveying

摘　　要：舟山地区为海岛丘陵区,具有地貌类型多、变化较迅速、岩土层类型较复杂、岩相和岩性及厚度变化大的工程地质特点。针对本区工程勘察中常见的不同风化程度岩石区分、孤石与基岩判别、第四系之下基岩顶面异常起伏、持力层之中存在软弱夹层等工程地质问题,应加强现场观察调查,采用钻探配合工程物探方法 (电法、浅地震法、声波勘察)及静力触探等原位测试,并适当增加勘察钻孔与取样数量。Zhoushan region is the island hilly area where is characterized by many physiognomy types which change rapidly. There are the complex geotechnical layer types and great diversity in the lithofacies, lithology and thickness. In order to deal with the common problems in geotechnical investigation such as the classification of different weathering levels of rock, the discrimination between boulder and bedrock, the abnormal fluctuation of the upper surface of bedrock beneath quaternary system and the weak intercalated layer in the bearing strata, the suitable solutions such as strengthening observation and investigation on site, the drilling combined with geophysical methods （electrical, shallow seismic method, acoustic survey）, in-situ statie penetration tests, and the proper increase of the drilling holes and sampling number are proposed

关 键 词：海岛丘陵区 工程勘察 孤石 风化岩 软弱层 

分 类 号：TU195.1[建筑科学—建筑理论]