安徽宣城至泾县高速公路岩溶发育特征及物探解译分析

CHARACTERISTICS OF KARST DEVELOPMENT IN THE EXPRESSWAY FROM XUANCHENG TO JINGXIAN IN ANHUI AND THEIR GEOPHYSICAL INTERPRETATION

宣泾高速详勘工作涉及的主要不良地质作用为岩溶作用,因此详细查明沿线可溶岩发育区域、岩溶发育特征及空间分布十分重要。本文通过分析该区域沿线岩溶发育地质地貌类型及岩性特征,划分了不同地貌类型,介绍了沿线区域地质情况。结合野外的大量钻探工作,划分了不同地质岩组的岩溶发育程度。通过现场物探成果资料解译结合钻探相互论证,为整个岩溶发育区域的空间判断提供了依据,为后续施工指导提供了较好的成果资料。

Karstification is the main adverse geological effect disclosed by the detailed exploration work for the Xuan-Jing expressway.Therefore,it is very important to find out the areas where soluble rocks develop,and the characteristics and spatial distribution of karst development.By analyzing the geological and geomorphic types and lithologic characteristics of karst development along the line,this paper classifies different geomorphic types and introduces the regional geological conditions along the line.Combined with a lot of drilling work in the field,the karst development degrees are divided for different geological formation complexes.Through the interpretation of the field geophysical exploration data and the drilling test,a basis was provided for the spatial judgment of the whole karst development area,which also serves as a good result for guiding the subsequent construction.