摘要
黄河下游山东段河道带稳定性受控于新构造运动、活动断裂、地震烈度、河流动力地质作用、河道带地貌结构、土体性质及人为地质工程体性质等因素。该段河道带可分为四个地质环境质量区，据其对河道稳定性的影响程度，确定了地壳稳定性、堤基堤身稳定性、地面稳定性为评价主因子，同时确定了分级评价因子及分值，并采用“因素叠置法”分区进行计算与评价。河道带稳定性评价结果表明：游荡型河道地质环境质量区和尾闾型河道地质环境质量区较不稳定，过渡型河道地质环境质量区较稳定，弯曲型河道地质环境质量区为稳定。
The river course stability in Shandong part of the Huanghe river′s lower course is controlled by many factors, such as neotectonics, active faults,earthquake intensity, river′s dynamic geological action, morphostructure of river course, soil property and manmade geologicengineering construction property in the course, etc. The river course can be divided into four geological environment quality regions. According to the effecting degree to the river course, the crust stability,barrage base and barrage stability and ground surface stability are determined as major factors to evaluate,and groduational evaluation factors and their value are determined too. “Factors overlapping method” is used to calculate and evaluate regions' stability. As showed by the evaluation of river course stability, the geological environment quality regions in braided river course and tail river course are relatively unsteady, in transitional river course relatively steady,and in zigzag river course, steady.
出处
《山东地质》
1998年第3期37-45,共9页
Geology of Shandong
关键词
黄河下游
山东段
河道带
稳定性
地质环境
Geological environment quality, river course stability, Huanghe river, Shandong
