大莱龙铁路路基地质物探分析  

Geological and Geophysical Investigation Analyses of Dalailong Railway Subgrade Materials

作　　者：陈浩 刘炳文 宋曙光 周宗贺 张如涛 CHEN Hao;LIU Bingwen;SONG Shuguang;ZHOU Zonghe;ZHANG Rutao(Shandong Dalailong Railway Co.LTD,Zhaoyuan 265400;Laizhou Transportation Service Center,Yantai 261423;Shandong Jianzhu University,Jinan 250101)

机构地区：[1]山东大莱龙铁路有限责任公司,山东招远265400 [2]莱州市交通运输服务中心,山东烟台261423 [3]山东建筑大学,济南250101

出　　处：《土工基础》2022年第3期331-334,共4页Soil Engineering and Foundation

摘　　要：为分析大莱龙铁路路基的地质条件和承载力条件,对其路基进行了地质物探勘查。首先,利用正常地质体与异常体之间的电性差异,采用可控源音频大地电磁测法(CSAMT),通过分析测线视电阻率断面图、三维图、剪力变形区域图和曲线图、二维反演图勘明大莱龙铁路路基存在的致害地质结构;其次,采用Evd动态模量检测方法,通过分析测点的沉陷值和动态变形模量,检测大莱龙铁路路基的路基承载力情况。结果表明,大莱龙铁路路基现坡面含有滑移体和不密实滑移面,其路基承载力分布不均,还需进一步填充压实。The geological and geophysical investigations were performed to analyze the geological condition and bearing capacity aspects of Dailailong railway subgrade materials.Based on the electrical differences between the normal and the abnormal geological bodies,The Controlled Source Audio Magnetic Telluric(CSAMT) was used to identify unfavorable geological conditions of Dailailong railway subgrade material by analyzing the apparent resistivity cross-section diagram,three-dimensional diagram,shear deformation area diagram and curve diagram,and two-dimensional inversion diagram.Secondly,by using of E_(vd) dynamic modulus detection method,the subgrade bearing capacity of Dalailong railway subgrade was detected by analyzing the settlement value and dynamic deformation modulus of the measurement points.The results show that the subgrade slope of Dalailong railway contains sliding bodies and uncompacted sliding surfaces,and the bearing capacity of the subgrade is unevenly distributed,which requires further filling and compaction.

关 键 词：大莱龙铁路 地质物探 可控源音频大地电磁测探 Evd动态模量检测方法 

分 类 号：P642[天文地球—工程地质学]