摘要
山东某大桥近海施工,基础地层中富含卤盐,岩溶地貌十分发育,且大桥工程巨大,探明大桥基底岩溶发育情况是关键。为此采用并行电法技术,布设了15个测站对场地进行勘探,完成2 590m的勘探测线。数据采集使用了AM与ABM法,分别进行了二极、温纳三极、温纳四极、温纳偶极和温纳微分五种装置数据提取、计算和反演,获得了各测站的电阻率断面图。结合钻孔揭露地质资料对场地条件进行分析,推测场地的岩溶发育与分布状况,为桩基的施工处理提供有效的指导。
The bridge near the sea in Shandong Province, halide salt - rich strata, karst landforms are well devel- oped, the project is huge that the base karst development situation of the bridge must be ascertained. 15 parallel electricity method survey stations were laid to explore the area, watering in electrode arrangement to improve e- lectrode coupling effect, completing the 2 590 m exploration survey line. AM and ABM method were applied in collecting data, Wenner pole - dipole, Wenner Alpha, Wenner Beta, Wenner Gamma and pole - pole array were calculated and processed, and with three -dimensional inversion software, resistivity section of each station was obtained. Finally, karst development and distribution situation were suggested combine drilling and other ge- ological data, it could provide effective guidance for pile construction process.
出处
《安徽理工大学学报（自然科学版）》
CAS
2013年第1期10-15,共6页
Journal of Anhui University of Science and Technology:Natural Science
基金
国家"十二五"科技支撑计划课题资助项目(2011BAK07B02)
福建省自然科学基金资助项目(2010J01262)
龙岩市科技计划资助项目(2011LY53)
关键词
桥基勘察
并行电法
电阻率断面图
岩溶
bridge foundation prospecting
parallel electricity method
resistivity section
karst
