| 南水北调西线区域地壳稳定性评价思路和地壳现代构造应力场及块断作用 |
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| 引用本文： | 李长辉.南水北调西线区域地壳稳定性评价思路和地壳现代构造应力场及块断作用[J].青海国土经略,1994(2). |
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| 作者姓名： | 李长辉 |
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| 作者单位： | 青海省第二水文地质队 |
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| 摘 要： | 区域地壳活动性受区域构造应力场控制。通过南水北调西线区域及邻区34个中强地震的震源机制解,对区域内现代构造应力场进行了分析。结合地球物理资料,对西线区域的边界断裂及其活动性进行了评估。将测区青康滇楔状地壳断块体,划分为鄂陵湖—龙门山和西金乌兰湖—贡嘎山两个次级断块,分析了它们的块断作用。
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| 关 键 词： | 南水北调 西线区域 地壳 稳定性 现代构造 应力场 断块 块断作用 |
EVALUATION ON REGIONAL CRUST STABLITY IN THE REGION OF WEST LINE OF TRANSFERRING WATER FROM THE SOUTH TO THE NORTH AND THE MODERN TECTONIC STRESS FIELD AND MASSIVE FAULTING |
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| Authors: | Li Changhui Second hydrogeological Team of Qinghai Province |
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| Institution: | Li Changhui Second hydrogeological Team of Qinghai Province |
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| Abstract: | The regional crust activity is controled by the regional tectonic stress field.Through the study on focus mechanism of 34 moderate-strong earthquakes in the region of westline of transferring water from the south to the north and its adjacent areas, the author has analy-sed the modern regional tectonic stress field and, combining the geophysical data, appraised theboundary faults and its activity. Furthermore,the author held that the Qinghai-Xikang-Yunnanwedge crustal fault-block can be divided into two sub-fault-blocks,i. e., Eling lake-Long-men mountain and Xijingwulan lake-Gonggashan,and also described the block-faulting. |
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| Keywords: | transferring water from the south to the north region of west line crust stablity modern tectonics stress field fault-block block-faulting |
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