离石断裂活动性分析及其对中部引黄工程影响评价  

Lishi Fracture Activity Analysis and Its Impact Evaluation on the Middle Yellow River Diversion Project

作　　者：杨石眉[1] 

机构地区：[1]山西省水利水电勘测设计研究院,山西太原030024

出　　处：《山西水利科技》2016年第4期10-13,共4页Shanxi Hydrotechnics

摘　　要：离石断裂是位于山西省西部,由北向南绵延逾270 km的断裂带。而该断裂是否具有活动性尚无明确定论。文中在收集有关离石断裂研究成果,对沿线地形地貌、地质构造调查研究的基础上,利用了中国地震局地壳应力研究所对该断裂上覆的未发生错断的沉积物的热释光年代测定成果及鉴定资料。通过综合分析,判断该断裂带最新活动时代为早更新世,系非活动性断裂,该断裂对中部引黄工程无致命影响。但在施工中存在由此导致的工程地质问题。Lishi fracture is located in the west of Shanxi Province,from the north to the south,the fracture belt stretches over 270 km,and it has no unclear conclusion whether the fracture possesses activity.In the paper,the present research results relevant to the Lishi fracture are collected,the topography,geomorphology,and geological structures along the Lishi fracture belt are investigated and studied.On the basis of using the test results and identification information of thermoluminescence dating of not disconnected sediment samples overlain on the fractue which were presented by the Crustal Dynamics Institute of China Earthquake Administration and by means of the comprehensive analysis,the judgenent conclusion is that the latest active period of the fracture zone is early Pleistocene,it is non active fracture and the facture has not fatal influence on the Middle Yellow River Diversion Project,but the engineering geological problems caused by the fracture will exist in the construction.

关 键 词：离石断裂 活断层 地震 热释光 

分 类 号：P642[天文地球—工程地质学]