考慮降雨入滲影響的軟巖邊坡過程穩(wěn)定性研究
[Abstract]:Rock slope is widely distributed in highway construction, and its stability has a very important impact on the construction and investment of highway engineering. Due to the influence of natural environment and human activities, slope instability occurs from time to time. Great losses have been brought to society and the economy. Soft rock, as a special rock, has the engineering characteristics of plasticity and disturbance, which makes the stability of soft rock slope more difficult to control. Therefore, it is of great theoretical significance and practical value to study the excavation process of soft rock slope and the variation law of slope stability in the process of supporting under rainfall condition. Based on the previous research results and taking the soft rock slope of Ru-Chen Expressway in Hunan Province as the engineering background, the variation law of the stability of the soft rock slope during excavation and support under rainfall conditions is studied in this paper. The main contents are as follows: 1. By analyzing the factors influencing the stability of soft rock slope under rainfall condition, it is shown that the influence of rainfall duration t on the safety of soft rock slope is greater than that of rainfall intensity when rainfall is constant. Among the physical and mechanical parameters of rock and soil, the internal friction angle of sliding surface has the greatest influence on the safety of soft rock slope, the cohesion C is the second, and the influence of heavy degree is the least; 2. The excavation process and support process of soft rock slope considering rainfall infiltration were simulated by finite element software geo-studio, and the sliding surface of soft rock slope before and after excavation was compared with that of soft rock slope before and after excavation. The results show that rainfall infiltration reduces the stability of soft rock slope. In the process of excavation, the safety of soft rock slope first increases and then decreases; in the process of excavation and support, the deformation of soft rock slope is effectively controlled; 3. The state of soft rock slope is divided into three grades, and the evaluation index system of process stability of soft rock slope considering rainfall infiltration is established by selecting 15 evaluation indexes. The fuzzy evaluation model of the process stability of soft rock slope is constructed by combining the analytic hierarchy process (AHP) with the fuzzy comprehensive evaluation method. 4. The process stability evaluation system of soft rock slope considering rainfall infiltration is developed by using Visual Basic language. The intelligent and rapid evaluation of soft rock slope process stability is preliminarily realized, and the effectiveness and feasibility of the evaluation system are verified by an example.
【學(xué)位授予單位】:長沙理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2013
【分類號(hào)】:TU457
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 鄭穎人,趙尚毅,時(shí)衛(wèi)民,林麗;邊坡穩(wěn)定分析的一些進(jìn)展[J];地下空間;2001年04期
2 沈?qū)毺?王泳嘉;邊坡破壞機(jī)制的離散元法研究[J];東北工學(xué)院學(xué)報(bào);1989年04期
3 劉建軍,裴桂紅,薛強(qiáng);降雨條件下道路邊坡地下水滲流分析[J];公路交通科技;2005年S2期
4 王恭先;高邊坡設(shè)計(jì)與加固問題的討論[J];甘肅科學(xué)學(xué)報(bào);2003年S1期
5 高崇;李澎;王征;;基于灰色關(guān)聯(lián)分析法的邊坡穩(wěn)定性分析[J];華北水利水電學(xué)院學(xué)報(bào);2012年01期
6 侯曉亮;譚曉慧;;灰色關(guān)聯(lián)理論在邊坡穩(wěn)定性分析中的應(yīng)用[J];路基工程;2011年03期
7 毛巨省;;模糊綜合評(píng)判在邊坡穩(wěn)定性評(píng)價(jià)中的應(yīng)用[J];西安科技大學(xué)學(xué)報(bào);2010年05期
8 陳成宗;王石春;陳光中;;軟弱巖體中鐵路隧道圍巖穩(wěn)定性及其控制[J];巖石力學(xué)與工程學(xué)報(bào);1982年01期
9 朱珍德,邢福東,王思敬,徐衛(wèi)亞;地下水對泥板巖強(qiáng)度軟化的損傷力學(xué)分析[J];巖石力學(xué)與工程學(xué)報(bào);2004年S2期
10 周翠英,鄧毅梅,譚祥韶,劉祚秋,尚偉,詹勝;飽水軟巖力學(xué)性質(zhì)軟化的試驗(yàn)研究與應(yīng)用[J];巖石力學(xué)與工程學(xué)報(bào);2005年01期
相關(guān)會(huì)議論文 前2條
1 孫廣忠;姚寶魁;;中國滑坡地質(zhì)災(zāi)害及其研究[A];中國典型滑坡[C];1986年
2 程強(qiáng);黃紹檳;周永江;;紅層軟巖工程地質(zhì)特征及公路病害[A];第八次全國巖石力學(xué)與工程學(xué)術(shù)大會(huì)論文集[C];2004年
相關(guān)博士學(xué)位論文 前3條
1 陳科平;高速公路邊坡穩(wěn)定性模糊評(píng)價(jià)及加固治理研究[D];中南大學(xué);2007年
2 邱恩喜;道路軟巖邊坡設(shè)計(jì)研究[D];西南交通大學(xué);2009年
3 聶春龍;邊坡工程風(fēng)險(xiǎn)分析理論與應(yīng)用研究[D];中南大學(xué);2012年
相關(guān)碩士學(xué)位論文 前8條
1 劉冠男;關(guān)于配電自動(dòng)化系統(tǒng)技術(shù)經(jīng)濟(jì)綜合評(píng)價(jià)體系的建立與應(yīng)用[D];遼寧科技大學(xué);2012年
2 黃超慧;深部高應(yīng)力膨脹性軟巖巷道噴錨注支護(hù)研究[D];西安科技大學(xué);2006年
3 徐娜;高速公路機(jī)電系統(tǒng)安全運(yùn)行管理及其評(píng)價(jià)研究[D];長安大學(xué);2009年
4 謝承平;軟巖邊坡主要影響因素及穩(wěn)定性分析研究[D];西南交通大學(xué);2009年
5 李昆仲;基于RBF神經(jīng)網(wǎng)絡(luò)的邊坡穩(wěn)定性評(píng)價(jià)研究[D];長安大學(xué);2010年
6 于生飛;基于區(qū)間不確定方法的邊坡穩(wěn)定性分析及非概率可靠度評(píng)價(jià)研究[D];南京大學(xué);2012年
7 鞏留杰;基于有限元計(jì)算的邊坡穩(wěn)定極限平衡法研究[D];湖南大學(xué);2012年
8 莫玻;基于可靠度理論的邊坡穩(wěn)定性分析方法的研究[D];重慶大學(xué);2012年
,本文編號(hào):2372418
本文鏈接:http://sikaile.net/kejilunwen/sgjslw/2372418.html