本文關(guān)鍵詞： 層狀巖質(zhì)斜坡 坡體結(jié)構(gòu) 變形破壞 破壞模式　出處：《蘭州大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：斜坡問題是工程建設(shè)中最常見的地質(zhì)問題之一,可能會導(dǎo)致嚴重的地質(zhì)災(zāi)害。層狀巖質(zhì)斜坡不僅分布最為廣泛,災(zāi)害頻發(fā),而且坡體結(jié)構(gòu)、變形破壞特征復(fù)雜多樣,成為制約著工程實踐重大的地質(zhì)問題。目前,層狀巖質(zhì)斜坡研究缺乏系統(tǒng)性的研究,缺乏普遍的實用性�；诖�,本文針對層狀巖質(zhì)斜坡基本特征,豐富了層狀巖質(zhì)斜坡的坡體結(jié)構(gòu)的概念,充分考慮巖層產(chǎn)狀、臨空面、巖性組合、巖體結(jié)構(gòu)面特征,全面系統(tǒng)地構(gòu)建了層狀巖質(zhì)斜坡坡體結(jié)構(gòu)分類體系。然后以坡體結(jié)構(gòu)為紐帶論述了層狀巖質(zhì)斜坡變形破壞的坡體結(jié)構(gòu)效應(yīng)及其相對性、復(fù)合性和動態(tài)轉(zhuǎn)化性。最后以茨哈峽水電站壩址區(qū)層狀巖質(zhì)斜坡為例進行坡體結(jié)構(gòu)分類,討論了其坡體結(jié)構(gòu)特征,并分析了茨哈峽壩址區(qū)庫岸斜坡變形破壞基本特征,從而為后期斜坡穩(wěn)定性評價以及工程措施提供理論依據(jù)。主要研究成果如下：(1)總結(jié)歸納前人大量研究成果的基礎(chǔ)上,較為準確地給出層狀巖質(zhì)斜坡坡體結(jié)構(gòu)的概念。進一步以層產(chǎn)狀與臨空面組合關(guān)系為主,同時考慮巖性組合、結(jié)構(gòu)面組合關(guān)系特征,建立了層狀巖質(zhì)斜坡坡體結(jié)構(gòu)的系統(tǒng)性分類,進而詳細闡述了各類坡體結(jié)構(gòu)的基本特征。(2)基于上述層狀巖質(zhì)斜坡坡體結(jié)構(gòu)類型特征,以工程地質(zhì)分析為指導(dǎo),利用數(shù)值模擬計算方法,進一步探討變形破壞模式以及動態(tài)演化過程,從而強調(diào)了坡體結(jié)構(gòu)特征與變形破壞之間的對應(yīng)關(guān)系,并且強調(diào)這種對應(yīng)關(guān)系的相對性、復(fù)合性、動態(tài)性以及轉(zhuǎn)化性。(3)基于上述建立了層狀巖質(zhì)斜坡坡體結(jié)構(gòu)概念→層狀巖質(zhì)斜坡坡體結(jié)構(gòu)類型→層狀巖質(zhì)斜坡坡體結(jié)構(gòu)特征→層狀巖質(zhì)斜坡變形破壞的坡體效應(yīng)研究體系,以茨哈峽水電站壩址區(qū)層狀巖質(zhì)斜坡提供的天然數(shù)據(jù)庫為依托,從坡體結(jié)構(gòu)角度出發(fā),科學(xué)合理地分析了茨哈峽壩址庫岸斜坡變形破壞特征。
[Abstract]:The slope problem is one of the most common geological problems in engineering construction, which may lead to serious geological hazards. Stratified rock slopes are not only the most widely distributed, frequent disasters, but also the slope structure, deformation and failure characteristics are complex and diverse. At present, the study of stratiform rock slopes lacks systematic research and general practicability. Based on this, this paper aims at the basic characteristics of layered rock slopes. It enriches the concept of slope structure of stratified rock slope, and fully considers the occurrence of rock layer, the face of space, the combination of lithology, and the characteristics of rock mass structural plane. A comprehensive and systematic classification system of slope structure of layered rock slope is constructed, and then the slope structure effect and its relativity of deformation and failure of layered rock slope are discussed by means of slope body structure. Finally, taking the stratified rock slope in the dam site of Zha Gorge Hydropower Station as an example, the slope structure characteristics are discussed, and the basic characteristics of deformation and failure of the reservoir bank slope in the Zha Gorge dam site are analyzed. Thus providing a theoretical basis for the later slope stability evaluation and engineering measures. The main research results are as follows: 1) on the basis of summing up and summarizing a large number of previous research results, The concept of slope structure of stratified rock slope is given more accurately. Further, the relationship between the occurrence of the layer and the face of the void is considered, and the characteristics of the combination of the lithology and the structural plane are taken into account at the same time. The systematic classification of slope body structure of layered rock slope is established, and the basic characteristics of various slope body structures are expounded in detail. Based on the characteristics of slope body structure of layered rock slope mentioned above, engineering geological analysis is used as the guide. Using the numerical simulation method, the deformation failure mode and the dynamic evolution process are further discussed, thus emphasizing the corresponding relation between the structural characteristics of slope and the deformation and failure, and emphasizing the relativity and compounding of the corresponding relation. Based on the above, the concept of slope structure of layered rock slope is established. 鈫扴lope structure types of layered rock slopes. 鈫扴tructural characteristics of layered Slope Slope. 鈫払ased on the natural database provided by stratified rock slopes in the dam area of Zha Gorge Hydropower Station, the study system of slope effect on the deformation and failure of layered rock slopes is based on the slope structure. The deformation and failure characteristics of the slope on the bank of the Zha Gorge dam site are analyzed scientifically and reasonably.
【學(xué)位授予單位】：蘭州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P642.22

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