地质动力区划在鹤岗城区的应用

Application of geodynamic zoning in Hegang urban area

应用地质动力区划方法,通过逐级使用地形测量图,并结合地震震源分布图、卫星照片、区域地质图、地球物理资料等查明了鹤岗城区的Ⅰ～Ⅲ级活动断裂,由各级断裂所分割的断块结构展现出了城区现今构造运动的结果。在实测地应力的基础上,以查明的各级断块结构为模型,应用有限元法进行了区域构造应力场的数值模拟,同时分析了煤炭开采对构造活动的诱发作用。进而将城区划分为构造运动潜在高威胁区、潜在威胁区和一般区,并对城区楼寓、生命线系统的相关防灾措施进行了研究。

Some class Ⅰ～Ⅲ active faults that run through Hegang urban area are found by means of geodynamic zoning, with topographic maps, epicenters maps, satellite photographs, areal geological maps, physical geography data and etc. The block construction cut by all classes of active faults reveals the result of tectonic movement. Based on surveying the principal stress in the city, numeric simulation of regional tectonic stress field has been made by the model built on all class block constructions and with the finite element method. That tectonic movement affected by coal mining has been analysed. Then the high threatening latency areas, the threatening latency areas and the general areas are divided. Furthermore, the related safety measures of the city buildings and life line systems are studied.