本文關(guān)鍵詞： 三峽水庫(kù) 庫(kù)區(qū)塌岸 侵蝕型 滑移型 剛體極限平衡法　出處：《中國(guó)地質(zhì)大學(xué)（北京）》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：三峽水庫(kù)蓄水使得庫(kù)區(qū)水位處于較大幅度動(dòng)態(tài)變化之中，從而引發(fā)了一系列的庫(kù)區(qū)地質(zhì)環(huán)境問題，其中塌岸是影響三峽工程安全的重大地質(zhì)災(zāi)害問題之一。重慶沙坪壩段金沙正街塌岸位于三峽庫(kù)區(qū)庫(kù)尾的重慶段，本文通過野外勘查及室內(nèi)分析，采用兩端法、卡丘金法、佐羅塔廖夫法及岸坡結(jié)構(gòu)法等多種方法對(duì)研究區(qū)侵蝕型塌岸可能性進(jìn)行預(yù)測(cè)；采用剛體極限平衡法對(duì)滑移型塌岸可能性進(jìn)行了分析。通過深入分析研究，取得了以下主要成果： （1）在現(xiàn)場(chǎng)實(shí)地勘查的的基礎(chǔ)上，查明了該塌岸的工程地質(zhì)環(huán)境條件，主要包括有岸坡形態(tài)特征、岸坡結(jié)構(gòu)特征、物質(zhì)組成、水文地質(zhì)條件，現(xiàn)狀條件下塌岸的發(fā)育和分布特點(diǎn)，為該塌岸的預(yù)測(cè)提供了較為完善的地質(zhì)基礎(chǔ)。 （2）采用兩端法、卡丘金法、佐羅塔廖夫法及岸坡結(jié)構(gòu)法對(duì)該塌岸的發(fā)育規(guī)模進(jìn)行了預(yù)測(cè)，并對(duì)比分析各方法預(yù)測(cè)結(jié)果得到岸坡結(jié)構(gòu)法和佐羅塔廖夫法預(yù)測(cè)結(jié)果相近，而兩端法相對(duì)于岸坡結(jié)構(gòu)法和佐羅塔廖夫法預(yù)測(cè)結(jié)果偏大，原因可能是兩端法考慮了毛細(xì)水上升高度的因素。而當(dāng)岸坡物質(zhì)單一、變化不大時(shí)，卡丘金法預(yù)測(cè)結(jié)果是與其他三種預(yù)測(cè)方法接近的，，當(dāng)遇到岸坡物質(zhì)結(jié)構(gòu)復(fù)雜時(shí)，卡丘金法預(yù)測(cè)結(jié)果偏大。 （3）通過極限平衡法計(jì)算了該塌岸的穩(wěn)定性，得出在最不利工況條件下研究區(qū)岸坡也是出于穩(wěn)定狀態(tài)的，從而排除了研究區(qū)岸坡存在滑移性的可能，可以確定研究區(qū)岸坡塌岸類型為侵蝕型塌岸。
[Abstract]:The storage of water in the three Gorges Reservoir makes the water level in the reservoir area in a relatively large dynamic change, thus causing a series of geological environmental problems in the reservoir area. The bank collapse is one of the major geological hazards affecting the safety of the three Gorges Project. The Jinsha main Street in Shapingba section of Chongqing is located at the end of the reservoir in the three Gorges Reservoir area. Through field exploration and indoor analysis, this paper adopts the two-end method and the Kachujin method. Several methods, such as Zorotaliov method and bank slope structure method, are used to predict the possibility of erosion type bank collapse in the study area, and rigid body limit equilibrium method is used to analyze the possibility of slip type bank collapse. Through in-depth analysis and study, the following main results have been obtained:. (1) on the basis of on-the-spot investigation, the engineering geological environmental conditions of the bank collapse are found out, which mainly include the characteristics of bank slope morphology, slope structure, material composition, hydrogeological conditions, and the development and distribution of the bank collapse under the present condition. It provides a relatively perfect geological basis for the prediction of the bank collapse. (2) the development scale of the bank collapse is predicted by using the two ends method, the Kachujin method, the Zorotaliov method and the slope structure method. The results of comparison and analysis show that the prediction results of the slope structure method and the Zorotaliov method are similar. Compared with the slope structure method and the Zorotaliov method, the two ends method may be due to the fact that the two ends method takes into account the rising height of capillary water, but when the slope material is single, the change is not obvious. The results of Kachujin method are close to those of other three methods. When the material structure of bank slope is complex, the result of Kachujin method is larger than that of other methods. 3) the stability of the bank collapse is calculated by using the limit equilibrium method, and it is concluded that the slope of the study area is also stable under the most unfavorable working conditions, thus eliminating the possibility of the slip of the bank slope in the study area. It can be determined that the type of bank collapse in the study area is erosion type.
【學(xué)位授予單位】：中國(guó)地質(zhì)大學(xué)（北京）
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TV221.2

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