四川1:25万阿坝县幅区调主要成果与进展

Main Progress and Achievements in Regional Geological Survey of 1:250 000 Aba Sheet,Sichuan Province

四川1∶25万阿坝县幅区调,在三叠系多重划分对比与沉积盆地演化、新近—第四纪阿坝盆地演化、主要断裂带的断裂结构及其活动性研究等方面取得了重要进展,对南水北调西线一期工程区进行了详细地质调查,编制了一期工程区带状地质图、引水线路评价剖面图,提出了引水线路优选方案,为区域地质调查拓宽服务领域提供了经验,开展了区域地质调查数字填图系统应用试点工作,对系统运用的可行性、有效性及适用性进行了探讨,初步建立适宜于工程与环境地质调查为侧重点的数字区域地质调查工作流程与方法,提高了区域地质研究程度和成果报告的社会实用性。

The regional geological survey project of 1 ： 250 000 Aba sheet has got progress in muhiple division and correlation of Triassic strata, Aba basin evolution from Neogene to Quaternary, tectonic structure and activity study of major tectonic zone. In this project, basing on detailed geological survey along the first stage of the western route project of South-To-North Water transfer scheme, a series of geological maps and profiles of water transfer route had been compiled, which were favorable for optimization of water transfer route, and these provided experience on expanding service of regional geological survey. In this project, digital mapping system had been applied in regional geological survey, the feasibility, effectiveness and suitability had been discussed in this pilot application, the working process and methods of digital regional geological survey which was suitable for engineer- ing and environmental geology survey had been established. These increased the application of achievements from regional geological survey.