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 area is a hilly island, with many types of geomorphology, rapid changes, rock and soil types more complex, lithofacies and lithology and thickness of large changes in engineering geological features. In view of the common weathering degree of rock discrimination, boulder and bedrock discrimination in the engineering survey of this area, abnormal top and bottom of bedrock in Quaternary, engineering geological problems such as weak sandwiches among the holding strata, we should strengthen the on-site observation Survey, the use of drilling with engineering geophysical methods (electrical method, shallow seismic method, acoustic exploration) and static probe and other in situ testing, and appropriate to increase the number of exploration drilling and sampling.