本文選題：炭質(zhì)頁巖 + 泥化夾層��； 參考：《重慶交通大學(xué)》2017年碩士論文

【摘要】：水利工程大壩雍高水位后,庫區(qū)岸坡受降雨及水位消漲的影響,在江水的長(zhǎng)期浸泡下,其巖石性質(zhì)劣化,可能進(jìn)入失穩(wěn)狀態(tài)。為了預(yù)測(cè)庫區(qū)沿岸巖石工程的長(zhǎng)期穩(wěn)定性,有必要對(duì)自然狀態(tài)和飽水狀態(tài)下巖石流變力學(xué)特性進(jìn)行研究。本文以烏江武隆段炭質(zhì)頁巖泥化夾層為研究對(duì)象,基于炭質(zhì)頁巖泥化夾層在自然狀態(tài)和飽水狀態(tài)下的力學(xué)特性及蠕變規(guī)律,采用試驗(yàn)研究與理論分析,建立適用于炭質(zhì)頁巖泥化夾層流變特性的非線性粘彈塑性西原模型,并用逐步迭代的優(yōu)化反演法進(jìn)行非線性參數(shù)反演,確定流變模型參數(shù)并驗(yàn)證模型,最后由流變模型推求長(zhǎng)期強(qiáng)度。本文所做主要研究工作如下:(1)分析討論了幾種常見流變模型參數(shù)反演方法的優(yōu)缺點(diǎn)。(2)以武隆炭質(zhì)頁巖泥化夾層為研究對(duì)象,進(jìn)行了巖石含水率試驗(yàn)、直接剪切試驗(yàn)、摩擦試驗(yàn),得到了相關(guān)的力學(xué)參數(shù)。為炭質(zhì)頁巖泥化夾層剪切流變?cè)囼?yàn)提供依據(jù)。(3)采用單試件逐級(jí)增量加載試驗(yàn)方式對(duì)炭質(zhì)頁巖泥化夾層在自然狀態(tài)和飽水狀態(tài)下進(jìn)行剪切流變?cè)囼?yàn),分析了兩種含水狀態(tài)下得到的剪切位移-時(shí)間曲線,總結(jié)了炭質(zhì)頁巖泥化夾層的流變特性。(4)根據(jù)炭質(zhì)頁巖泥化夾層有非線性流變階段,引入非線性粘塑性元件,對(duì)西原模型進(jìn)行了改進(jìn),提出了適合炭質(zhì)頁巖泥化夾層流變特性的非線性粘彈塑性西原模型。并用MATLAB和ORIGIN分析軟件進(jìn)行非線性參數(shù)反演,確定了流變模型參數(shù),驗(yàn)證了所建模型的恰當(dāng)性。(5)運(yùn)用等時(shí)應(yīng)力-應(yīng)變曲線法和非穩(wěn)定蠕變判別法兩種方法來確定了炭質(zhì)頁巖泥化夾層的長(zhǎng)期強(qiáng)度,對(duì)比了兩種方法的適用條件,最終以等時(shí)應(yīng)力-應(yīng)變曲線法得到的長(zhǎng)期強(qiáng)度擬合出長(zhǎng)期抗剪強(qiáng)度參數(shù)。
[Abstract]:After the high water level of water conservancy dam, the bank slope of reservoir area is affected by rainfall and water level rising. Under the condition of long-term soaking of river water, its rock property will deteriorate and it may enter into the state of instability. In order to predict the long-term stability of rock engineering along the coast of the reservoir area, it is necessary to study the rheological mechanical properties of rock in natural and saturated state. In this paper, based on the mechanical properties and creep law of carbonaceous shale clay intercalation in natural state and saturated state, the experimental study and theoretical analysis are carried out in Wulong section of Wujiang. A nonlinear viscoelastic-plastic model suitable for rheological characteristics of carbonaceous shale intercalation is established. The parameters of rheological model are determined and the model is verified by the optimization inversion method of step by step iteration. Finally, the long-term strength is derived from the rheological model. The main research work in this paper is as follows: (1) the advantages and disadvantages of several common rheological model parameters inversion methods are analyzed and discussed. (2) the water content test, direct shear test and friction test of rock are carried out in Wulong carbonaceous shale mudding intercalation. The related mechanical parameters are obtained. It provides the basis for shearing rheological test of carbonaceous shale mudding intercalation. (3) the shear rheological test of carbonaceous shale mudded intercalation in natural and saturated state is carried out by means of incremental loading of single specimen. The shear displacement-time curves obtained under two kinds of water-bearing conditions are analyzed, and the rheological characteristics of the carbonaceous shale mudding intercalation are summarized. (4) according to the nonlinear rheological stage of the carbonaceous shale mudding intercalation, a nonlinear viscoplastic element is introduced. A nonlinear viscoelastic-plastic model suitable for rheological characteristics of carbonaceous shale shale-shale intercalation is proposed. The parameters of rheological model are determined by nonlinear parameter inversion using MATLAB and Organ analysis software. (5) two methods, isochronous stress-strain curve method and unsteady creep discriminant method, are used to determine the long-term strength of the carbonaceous shale mudding intercalation, and the applicable conditions of the two methods are compared. Finally, the long term shear strength parameters obtained by isochronous stress-strain curve method are fitted.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TV223

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 蔣玄葦;陳從新;夏開宗;劉秀敏;周意超;;石膏礦巖三軸壓縮蠕變特性試驗(yàn)研究[J];巖土力學(xué);2016年S1期

2 陳建勝;翦波;左成榮;于新華;;構(gòu)皮灘水電站工程軟巖原位流變?cè)囼?yàn)研究[J];人民長(zhǎng)江;2015年03期

3 周長(zhǎng)冰;萬志軍;張?jiān)?劉渝;張博;;高溫三軸應(yīng)力下氣煤蠕變特征及本構(gòu)模型[J];煤炭學(xué)報(bào);2012年12期

4 王新剛;胡斌;連寶琴;燕建龍;徐張建;趙治海;;改進(jìn)的非線性黏彈塑性流變模型及花崗巖剪切流變模型參數(shù)辨識(shí)[J];巖土工程學(xué)報(bào);2014年05期

5 李龍起;羅書學(xué);魏文凱;王運(yùn)超;徐華;徐駿;;降雨入滲對(duì)含軟弱夾層順層巖質(zhì)邊坡性狀影響的模型試驗(yàn)研究[J];巖石力學(xué)與工程學(xué)報(bào);2013年09期

6 佘成學(xué);孫輔庭;;節(jié)理巖體黏彈塑性流變破壞模型研究[J];巖石力學(xué)與工程學(xué)報(bào);2013年02期

7 劉浪;王革民;陳建宏;楊珊;;深部飽水巖石蠕變?cè)囼?yàn)及其流變模型(英文)[J];Transactions of Nonferrous Metals Society of China;2013年02期

8 宋勇軍;雷勝友;韓鐵林;;一種新的巖石非線性黏彈塑性流變模型[J];巖土力學(xué);2012年07期

9 李亞麗;;三軸壓縮下粉砂質(zhì)泥巖蠕變力學(xué)特性試驗(yàn)研究[J];四川大學(xué)學(xué)報(bào)(工程科學(xué)版);2012年S1期

10 李良權(quán);王偉;;粉砂質(zhì)泥巖流變力學(xué)參數(shù)的試驗(yàn)研究[J];三峽大學(xué)學(xué)報(bào)(自然科學(xué)版);2009年06期

相關(guān)會(huì)議論文 前1條

1 劉沐宇;王在泉;鄭澤岱;;巖石的流變力學(xué)模型及其參數(shù)確定[A];第二屆全國(guó)工程地質(zhì)力學(xué)青年學(xué)術(shù)討論會(huì)論文集[C];1992年

相關(guān)博士學(xué)位論文 前3條

1 周斌;湘西紅砂巖順層邊坡穩(wěn)定可靠度分析和風(fēng)險(xiǎn)評(píng)估[D];中南大學(xué);2010年

2 盧海峰;巴東組軟巖邊坡巖體工程特性及破壞機(jī)理研究[D];中國(guó)科學(xué)院研究生院（武漢巖土力學(xué)研究所）;2010年

3 陳文玲;黑河水庫壩肩邊坡云母石英片巖三軸蠕變機(jī)理及蠕變模型研究[D];長(zhǎng)安大學(xué);2009年

，

本文編號(hào)：2093335