一、地面地质测绘地面地质测绘工作,不但是研究喀斯特问题的初步工作,而是决定喀斯特地区能否修建水库的主要工作。经过深入的地面地质测绘以后,一般已能作出喀斯特岩层分布地区的初步评价。也只有经过深入的地面地质测绘以后,才能用少数的钻探工作量,得出正确的结论。地质测绘工作,首先应从1:500,000或1:200,000和1:100,000的小比例尺做起,在这一工 First, the surface geological mapping Ground geology mapping work, not only the preliminary study of karst issue, but to determine whether the karst reservoir construction of the main work. After in-depth ground geology surveying and mapping, it is generally possible to make a preliminary assessment of the distribution of karst rock formations. Only after a few thorough geological surveys of surface geology can we draw the correct conclusions with a few drilling workloads. Geological mapping should begin with a small scale of 1: 500,000 or 1: 200,000 and 1: 100,000