高密度电法在G214公路工程地质勘察中的应用  

Application of high density resistivity method in the engineering geological investigation of G214 highway

作　　者：朱兆荣 杨永鹏 韩龙武 

机构地区：[1]中铁西北科学研究院有限公司,兰州730000 [2]青海省冻土与环境工程重点试验室,青海格尔木816000

出　　处：《黑龙江大学工程学报》2014年第3期174-179,共6页Journal of Engineering of Heilongjiang University

基　　金：中国中铁股份有限公司重大项目(重大-235-2011)

摘　　要：2010年4月14日,青海省玉树藏族自治州发生了7.1级地震,给当地人民生命财产造成了严重损失。为了保证灾后重建工作的顺利实施,交通部规划G214线共和至结古段建设成为高速公路。拟建公路穿越青藏高原大片多年冻土区,工程地质条件复杂,且当前在青藏高原多年冻土区尚无修筑高等级公路的先例,因此,查明拟建公路沿线多年冻土类型和分布情况意义重大。详细介绍了高密度电法勘探的工作原理和方法,并将它在G214公路多年冻土区的勘探成果进行分析。结果表明,采用高密度电法结合工程地质钻探所获取的物性参数,可用来划分多年冻土类型、测定多年冻土上限,在特定区域可获取连续的冻土工程地质特性,结果满足工程勘探要求。On April 14, 2010, an earthquake of magnitude 7.1 occurred in Yushu Tibetan Autonomous Prefecture in Qinghai Province , the earthquake caused serious losses to the lives and property of the people .G214 road, as one of the important channels to Yushu , is hailed as the“lifeline” and played an important role in earthquake relief work.In order to ensure the smooth implementation of post-disaster reconstruction work , the Ministry of transportation planning G214 line to the junction of the ancient construction to become expressway .The proposed highway will go through the Qinghai-Tibet Plateau permafrost region which is the large , high altitude , climate , permafrost , complicated engineering geological conditions , poor geological conditions , but at the present in the permafrost area of Qinghai-Tibet Plateau is no highway built precedent , therefore, it has a great significance to find out the proposed along the highway in permafrost types and distribution .This paper introduces the working principle and the method of the high density electrical prospecting method , and the analysis exploration results of the high density resistivity method in G 214 highway in permafrost region .The results show that the high density electrical method can be used to divide the types , determine the melting permafrost boundaries , and upper limit of permafrost .The exploration results can satisfy the precision of engineering geophysical exploration requirements .

关 键 词：高密度电法 G214公路 多年冻土 工程地质勘察 

分 类 号：P642.14[天文地球—工程地质学] U419.92[天文地球—地质矿产勘探]