物探化探计算技术2025，Vol.47Issue(2)：282-292,11.DOI:10.12474/wthtjs.20240226-0005
高密度电法在查明隧洞砂化白云岩不良地质体的应用
The application of a high-density electrical method in detecting the bad geological body of sandy dolomite in tunnel
摘要
Abstract
The Chenaju tunnel of Yuxi section of the central Yunnan water diversion project passes through the water-rich sandy dolomite bad geological body stratum,and the water and sand gushing disasters occur frequently,which pose challenges to the construction safety,difficulty and progress.The high-density electrical method is used to carry out geophysical exploration on the rerouted section of Chenaju tunnel in Yuxi section of the central Yunnan water diversion project.Combined with the previous investigation and construction geological data,the boundary between sandstone and dolomite in the Chenaju tunnel's rerouted section is found,and the spatial distribution of fault structure and karst fracture zone is inferred.The geophysical exploration results are verified by borehole core logging,borehole acoustic wave test and borehole TV imaging,which are consistent with high-density electrical method's detection results.It shows that the high-density electrical method is suitable for investigating bad geological bodies of sandy dolomite in tunnels.It has the characteristics of high quality and high efficiency.It is an effective geophysical exploration method to detect geological structure,lithology boundary,and karst development in the investigation of sandy dolomite tunnels,and it provides a scientific basis for the demonstration of tunnel rerouting.关键词
滇中引水工程/高密度电法/砂化白云岩/岩性界线Key words
central yunnan water diversion project/high density resistivity method/sandy dolomite/lithologic boundary分类
天文与地球科学引用本文复制引用
王子铭,米健,郑广宇,查宇翔,苏利明..高密度电法在查明隧洞砂化白云岩不良地质体的应用[J].物探化探计算技术,2025,47(2):282-292,11.基金项目
云南省重大科技专项项目(202002AF080003) （202002AF080003）
