本文選題：近水平層狀巖質(zhì)滑坡　切入點(diǎn)：形成條件　出處：《蘭州大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：在巖質(zhì)滑坡中,有一種極為特殊的滑坡類型—近水平層狀巖質(zhì)滑坡。由于該類斜坡巖層緩傾,按照傳統(tǒng)力學(xué)平衡觀點(diǎn),難以發(fā)生大規(guī)模的滑坡。某水電站壩后發(fā)育了一特大型近水平層狀巖質(zhì)滑坡,可見其具有十分特殊的形成條件和成因機(jī)理。不少學(xué)者對(duì)近水平層狀巖質(zhì)滑坡的成因機(jī)理進(jìn)行了一定程度的研究,但大多學(xué)者研究對(duì)象為緩傾角巖層滑坡。盡管這兩類滑坡在巖層傾角上相差無幾,但近水平層狀巖質(zhì)滑坡的地質(zhì)環(huán)境特征、形成條件、成因機(jī)理與緩傾角巖層滑坡相比有所不同,因此有必要深入開展對(duì)近水平層狀巖質(zhì)滑坡的成因機(jī)理研究。本文以某水電站壩后的近水平層狀巖質(zhì)滑坡為研究對(duì)象,以滑坡所處的地質(zhì)環(huán)境條件為研究背景,對(duì)研究區(qū)內(nèi)發(fā)育的近水平層狀巖質(zhì)滑坡做了系統(tǒng)研究。在此基礎(chǔ)上,從工程地質(zhì)的基礎(chǔ)入手,采用現(xiàn)場(chǎng)調(diào)研、地質(zhì)分析與判斷、數(shù)值模擬相結(jié)合的綜合分析方法,對(duì)近水平層狀巖質(zhì)滑坡存在的兩大方面問題進(jìn)行研究,主要包括：近水平層狀巖質(zhì)滑坡的形成條件和近水平層狀巖質(zhì)滑坡的演化機(jī)制。(1)從滑坡區(qū)工程地質(zhì)環(huán)境入手,分析了該滑坡的形成條件和滑坡影響因素,闡述了滑坡的微地貌、滑體物質(zhì)、滑體和滑帶結(jié)構(gòu)等特征。(2)基于該滑坡顯著的分區(qū)和分層性特征,結(jié)合地質(zhì)環(huán)境及其演化規(guī)律,采用力學(xué)理論、物理模型試驗(yàn)和數(shù)值模擬等方法,論證了該滑坡的形成機(jī)理。(3)在研究滑坡形成機(jī)理的基礎(chǔ)上,再現(xiàn)其動(dòng)態(tài)演化過程,分析了滑坡動(dòng)態(tài)演化過程中,探討了該滑坡的演化機(jī)制。本文對(duì)近水平層狀巖質(zhì)滑坡的形成機(jī)理和演化機(jī)制進(jìn)行研究,據(jù)此可正確認(rèn)識(shí)滑坡的特征、評(píng)價(jià)當(dāng)前穩(wěn)定狀態(tài)、預(yù)測(cè)未來發(fā)展演化趨勢(shì)以及制訂相應(yīng)的工程整治措施。研究結(jié)果可為復(fù)雜條件下大型近水平層狀巖質(zhì)滑坡的研究和工程實(shí)踐提供借鑒和參考。
[Abstract]:In the rock landslide, there is a very special type of landslide, near horizontal layered rock landslide. Because the rock layer of this kind of slope is gently tilting, according to the traditional view of mechanical balance, Large scale landslides are difficult to occur. A large, near horizontal bedded rock landslide has developed behind the dam of a hydropower station. It can be seen that it has very special forming conditions and genetic mechanism. Many scholars have studied the genetic mechanism of near-horizontal bedded rock landslide to a certain extent. Although the two types of landslides are similar in dip angle, the geological environment and forming conditions of near-horizontal bedded rock landslides are similar. The genetic mechanism is different from that of slowly inclined rock landslide, so it is necessary to study the genesis mechanism of near-horizontal bedded rock landslide. In this paper, the near-horizontal bedded rock landslide behind a hydropower station dam is taken as the research object. Taking the geological environment condition of landslide as the research background, this paper makes a systematic study on the near-horizontal bedded rock landslide developed in the study area. On this basis, starting from the foundation of engineering geology, field investigation, geological analysis and judgement are adopted. Two major problems of near-horizontal bedded rock landslide are studied by the comprehensive analysis method combined with numerical simulation. The main contents are as follows: the forming conditions of near-horizontal bedded rock landslides and the evolution mechanism of near-horizontal bedded rock landslides.) starting with the engineering geological environment of the landslide area, the forming conditions and influencing factors of the landslide are analyzed, and the microgeomorphology of the landslide is expounded. Based on the obvious zoning and stratification characteristics of the landslide, combined with the geological environment and its evolution law, this paper adopts the methods of mechanics theory, physical model test and numerical simulation, etc. The formation mechanism of the landslide is demonstrated. On the basis of studying the forming mechanism of the landslide, the dynamic evolution process of the landslide is reappeared, and the dynamic evolution process of the landslide is analyzed. In this paper, the formation mechanism and evolution mechanism of the near-horizontal layered rock landslide are studied, according to which the characteristics of the landslide can be correctly recognized and the current stable state can be evaluated. The research results can be used for reference and reference for the study and engineering practice of large near-horizontal bedded rock landslides under complex conditions.
【學(xué)位授予單位】：蘭州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P642.22

【引證文獻(xiàn)】

相關(guān)會(huì)議論文 前3條

1 諶文武;韓文峰;張咸恭;;斷層巖的工程地質(zhì)研究[A];工程地質(zhì)力學(xué)創(chuàng)新與發(fā)展暨工程地質(zhì)研究室成立50周年學(xué)術(shù)研討會(huì)論文集[C];2008年

2 石豫川;吉鋒;李振團(tuán);朱可俊;;中國(guó)西南某大型水電站右岸高邊坡變形監(jiān)測(cè)分析[A];第九屆全國(guó)工程地質(zhì)大會(huì)論文集[C];2012年

3 王佳權(quán);龍萬學(xué);彭小平;;觸發(fā)因素對(duì)滑坡特征的影響研究[A];貴州省巖石力學(xué)與工程學(xué)會(huì)2008年學(xué)術(shù)年會(huì)論文集[C];2008年

，

本文編號(hào)：1649535