秦皇岛地区柳江盆地地表塌陷区的遥感研究

柳江盆地是秦皇岛市的重要水源地,由于大量开采地下水,在隐伏岩溶发育区将引起地表塌陷。笔者通过对多波段、多时相的卫星图像、计算机数学处理图像及不同比例尺的黑白、彩色航空像片的解译研究,结合地面地质调查及钻探、物探资料进行综合分析,对该地区隐伏断裂构造、第四系松散堆积物的分布及其含水性、地表岩溶及隐伏岩溶区的分布作了研究分析,并分析了引起地表塌陷的各种地质因素,进而预测了几个开采地下水后将可能引起地表塌陷的危险区,为制定预防塌陷灾害的措施提供了必要的地质资料。

A STUDY OF SURFACE COLLAPSE BY REMOTE SENSING IN LIUJIANG BASIN, QIN HUANGDAO

Liujiang basin is an important water source area of Qinhuangdao city. The surface collapse will happen at hidden karst areas, due to much exploiting of ground-water. The characteristics of hidden fault structure, distribution and water-bearing nature of Quaternary loose sediment, and distribution of surficial and hidden karst area are studied by means of multi-temporal and multispectral satellite images and aerial color photos and digital image processing technique, combining with comprehensive analysis of the data from ground truth investigation, geophysical prospecting and drilling. Accordillg to analysis of tile various geological factors which can cause surface collapse, the positions of dangerous areas of surface collapse caused by exploiting of grouod -water have been predicted.The reliable geological evidences also have been provided for preventing work.