【作者】 钟国华；

【导师】 贾疏源； 李晓；

【作者基本信息】 成都理工大学 ， 地质工程， 2004， 硕士

【摘要】 水库诱发地震是由于水库蓄水产生的一种特殊类型的地震活动。水库诱发地震与库区地质环境和水库工程规模有着密切的联系，是衡量水库安全及大坝稳定性的重要因素。本文在总结水库诱发地震前人研究成果的基础上，系统分析了库水在水库诱发地震中的荷载效应，空隙水压力效应和对岩体的物理化学作用，从理论上讨论了水库诱发地震的水文地质机理，为水库诱发地震的水文地质分析提供依据。 大岗山电站位于大渡河断裂带、磨西断裂带和龙门山断裂带的交汇部位，新生代以来构造活动、地震活动和水热活动均较强烈。大岗山电站坝区岩体为花岗岩及辉绿岩脉，断裂和裂隙相当发育；其特殊的岩性构造特征决定坝区地下水埋藏特征为裂隙水。利用聚类分析手段对坝区地表水、地下水水化学宏量元素聚类；分析了坝区水样稀土含量特征、碳氧同位素特征和地表水径流模数；结合地下水动态变化特征对坝区地下水系进行划分，建立了坝区水文地质模型。 在对比研究水库诱发地震分析方法的基础上，作者提出水库诱发地震水文地质分析方法并利用该方法对坝区水文地质模型水库诱发地震作出评价，同时对坝区外围大型断裂的水库诱发地震进行了一定程度的分析。分析结果认为：(1)坝区F1断层及fl5断层地下水系诱发地震危险性较小，f5、f7断层地下水系及其与f2交汇部位是水库诱发地震的危险部位。(3)坝区外围的磨西断裂及大渡河断裂带中的得妥断层，F2断层的桃坪温泉附近具有发生水库诱发地震的有利条件。更多还原

【Abstract】 Reservior-Induced Seimicity is a special seismic activity due to the conservation of reservior. Reservior-Induced Seimicity closely get in touch with the reservoir-region geological surrounding and engineering scale, is the important factor to measure the reservoir-safety and dam-stability. Based on the pre-research of Reservior-Induced Seimicity, the text analyzed water’s load effect, interstitial water pressure and chemicophysical effect on rock in Reservior-Induced Seimicity and discussed hydrogeological mechanism of Reservior-Induced Seimicity. The analysis supplys reliance for the hydrogeological analysis of Reservior-Induced Seimicity.DaGangShan power station is located in the intersected segment of DaDuHe break-zone MoXi break-zone and LongMenShan break-zone.The construct-actibity seimic activity and hot-water activity is stong from Cenozoic ear. The rock of DaGangShan power station is granity and dolerity rock vein developed with break and flaw. The embed feature of ground water is flaw-water with the special trait of rock-conformation .Sorted macro-ammount element in earthe’s surface water and underground water with categorical-analyzed method,Analyzed the trait of rare earth c-o isotop in water pattern and the runoff mode number of earth’s surface; With the dynamic variational characteristic of ground water, The text divided ground water system and build the hydrogeological model in dam-region.Base on studying the analyzed-approach of Reservior-Induced Seimicity, Writer bring forward the hydrogeological analyzed method for Reservior-Induced Seimicity, And with that eatimated the Reservior-Induced Seimicity of hydrogeological model model in dam-region. At the same time analyzed the Reservior-Induced Seimicity danger of large-scale break in periphery of dam region. The analyzed result are : (1) The F1 fault and f15 fault ground water system’s dangerous of Reservior-Induced Seimicity is lower; The f5 fault f7 fault ground water system and the intersected segment of f5 f7 and f2 fault are the dangerous part of Reservior-Induced Seimicity. (2) MoXi break-zone , DeTuo fault of DaDuHe break-zone and TaoPing hot-water vicinity of F2 fault have the advatanged condition for Reservior-Induced Seimicity.更多还原