高密度电法查明南京某工程基岩面起伏及构造变动的应用效果  

Application Effect of High-density Electrical Method in Detecting Bedrock Surface Fluctuation and Structual Changes in an Engineering in Nanjing

作　　者：郭鹏杰[1] 杨凤根[1] 

机构地区：[1]河海大学地球科学与工程学院,南京市210098

出　　处：《勘察科学技术》2015年第6期52-55,共4页Site Investigation Science and Technology

基　　金：江苏省自然科学基金项目(BK20131367)资助

摘　　要：该文通过南京市某220k V电缆隧道工程的勘察实例,探讨了高密度电法在复杂地表地质条件下应用的可行性和效果。研究结果表明,采取有效的技术保障措施,高密度电法能较细致可靠地反映场地下伏基岩面的埋深、起伏,同时能够揭示小规模断层的组合展布规律及其含水情况,取得了较好的解释精度和地质效果,为盾构的工程评价与设计施工提供了科学依据。Through a surveying practice of 220kV cable tunnel project in Nanjing, this paper discusses the feasibility and effect of high-density resistivity method which is used in the complex ground surface condition. The results show that when adopts the effective technology protection measures, the high-den- sity resistivity method can reflect the depth, fluctuation of underground bedrock surface more detailedly and reliably. And it also can reveal the composite distruction rule and its water content of small scale faults. The method gets good interpretation accuracy and geological result. And it provides science basis for the engineering evaluation and design of shield construction.

关 键 词：高密度电法 复杂场地条件 基岩面起伏 组合断层 

分 类 号：TM757.3[电气工程—电力系统及自动化] P631.3[天文地球—地质矿产勘探]