摘要
地下隐蔽窑洞是威胁黄土地区人民生命财产安全的隐患之一。如今对于隐蔽窑洞的探查仍主要以传统的走访调查及钻探手段为主。这些传统手段与物探手段相比在直观性、经济性、准确性等方面存在着较大的劣势。高密度电法作为成熟的物探方法广泛地应用于岩土工程勘察、地质灾害勘察等领域。该方法在地下隐蔽窑洞探测上相比传统的手段有着地表无损、经济快捷等优势。本文通过工程实例,对已知窑洞位置的反演视电阻率物性特点进行分析,再依据该特点从定量及定性上分析其他高密度电法测线结果,证明高密度电法不仅能够较好的判断窑洞的位置及深度,并且通过对反演视电阻率的横向变化的定量分析,能够准确的探测出窑洞的边缘位置及深度。
Underground hidden cave is one of the hidden dangers threatening the safety of people's life and property in loess area.Nowadays,the exploration of hidden caves is still mainly based on traditional visiting investigation and drilling methods.Compared with geophysical methods,these traditional methods have obvious differences in intuition,economy and accuracy.As a mature geophysical method,high-density electrical method is widely used in geotechnical engineering survey,geological disaster survey and other fields.Compared with the traditional methods,this method has the advantages of surface nondestructive,economic and fast in the detection of underground hidden caves.Through engineering examples,this paper analyzes the physical characteristics of the inversion apparent resistivity of the known cave location,and then quantitatively and qualitatively analyzes the survey line results of other high-density electrical methods according to this characteristics.It is proved that the high-density electrical method can not only better judge the cave location and depth,but also through the quantitative analysis of the transverse change of the inversion apparent resistivity,It can accurately detect the edge position and depth of the cave.It has certain reference significance for cave exploration in similar strata in the future.
作者
高铎文
朱辉
李连海
莫鑫
Gao Duowen;Zhu Hui;Li Lianhai;Mo Xin(Xi’an Engineering Investigation&Design Research Institute of China National Nonferrous Metals Industry Co.,Ltd.,Xi’an 710054,China;China Railway 23rd Bureau Group 2th Engineering Co.,Ltd.,Beijing 102600,China)
出处
《城市勘测》
2022年第3期192-195,共4页
Urban Geotechnical Investigation & Surveying
关键词
高密度电法
窑洞探测
地质灾害
视电阻率
high density resistivity method
cave exploration
geological disaster
apparent resistivity
