本文選題：裂隙巖體 + 淺埋偏壓�。� 參考：《吉林大學(xué)》2017年碩士論文

【摘要】：我國幅員遼闊,地形地貌條件復(fù)雜多樣,且山地眾多,占國土面積的2/3以上。自1826年英國建設(shè)完成了世界上首座鐵路隧道以后,隧道工程得到了飛速的發(fā)展,擺脫了以往面對(duì)高山阻礙時(shí)只能選擇迂回展路的方案。如今,隧道以其能抵抗不良環(huán)境、有效提高行車效率、保護(hù)自然生態(tài)環(huán)境以及提高空間利用率等諸多優(yōu)勢(shì),已成為目前穿越天然障礙實(shí)現(xiàn)兩地互連以及緩解地面空間壓力的最主要手段之一。隧道作為賦存于巖土體中的一種典型地下構(gòu)筑物,地下水常常伴隨在其建設(shè)和使用的整個(gè)過程中。巖石本身滲透性很小,甚至可以認(rèn)為是不透水的。但是對(duì)于巖體,由于其內(nèi)部存在著數(shù)量不等、方向各異、成因多樣的孔隙和裂隙以及規(guī)模不等的結(jié)構(gòu)面和構(gòu)造帶,直接影響著巖體的滲透特性,使得在巖體中常會(huì)形成較大的孔隙水壓力。而由此帶來的工程地質(zhì)問題也是最為常見且棘手的[1]。本文以鶴大高速公路回頭溝隧道工程項(xiàng)目為依托工程,對(duì)淺埋偏壓隧道滲流場以及隧道由于地下水滲流導(dǎo)致的偏壓作用進(jìn)行了系統(tǒng)深入的研究,其內(nèi)容主要有以下幾個(gè)方面:(1)本文從滲流模型、滲流基本方程以及滲流問題的定解條件等幾方面對(duì)隧道圍巖滲流場分析的基礎(chǔ)理論進(jìn)行了介紹。并結(jié)合相關(guān)理論,分析了裂隙巖體內(nèi)滲流場和應(yīng)力場的相互作用機(jī)理,闡明了基于流固耦合分析評(píng)價(jià)隧道穩(wěn)定性的必要性。(2)在對(duì)回頭溝隧道淺埋偏壓段進(jìn)行了詳細(xì)的地質(zhì)勘查的基礎(chǔ)上,基于流固耦合的滲流理論,針對(duì)其典型斷面在最不利的工況條件下,進(jìn)行了偏壓隧道滲流場分布規(guī)律的分析。(3)采用FLAC3D數(shù)值模擬的手段,通過對(duì)隧道圍巖分別在考慮流固耦合下的地下水滲流和不考慮地下水滲流情況下的應(yīng)力場、位移場、塑性區(qū)范圍等方面的比較,結(jié)合現(xiàn)場監(jiān)測(cè)數(shù)據(jù)分析流固耦合效應(yīng)下滲流場對(duì)偏壓隧道偏壓效應(yīng)的影響。
[Abstract]:China has a vast territory, complex landforms and mountainous areas, accounting for more than 2 / 3 of the land area.Since the completion of the first railway tunnel in the world in 1826, the tunnel project has developed rapidly, and the tunnel project has been freed from the previous scheme of detour in the face of the obstacles of the high mountains.Nowadays, the tunnel has many advantages, such as resisting the bad environment, effectively improving the driving efficiency, protecting the natural ecological environment and improving the utilization rate of space.At present, it has become one of the most important means to cross natural obstacles to realize interconnect between two places and to relieve ground space pressure.As a typical underground structure existing in rock and soil, underground water is often accompanied by the whole process of its construction and use.The rock itself is so permeable that it can even be considered impervious.However, for rock mass, due to the existence of different quantities and different directions, various pores and fissures, and structural planes and structural zones of different scales, it has a direct impact on the permeability of rock mass.The pore water pressure is often formed in rock mass.The engineering geological problems caused by it are also the most common and difficult [1].Based on the project of He-Da Expressway Guigou Tunnel, this paper makes a systematic and in-depth study on the seepage field of shallow buried tunnel and the effect of tunnel pressure caused by groundwater seepage.The main contents are as follows: (1) this paper introduces the basic theory of seepage field analysis of tunnel surrounding rock from the aspects of seepage model, seepage basic equation and definite solution condition of seepage problem.The interaction mechanism of seepage field and stress field in fractured rock is analyzed based on the related theory.The necessity of evaluating tunnel stability based on fluid-solid coupling analysis is expounded. Based on the detailed geological survey of shallow buried partial pressure section of Huigou tunnel, the seepage theory based on fluid-solid coupling is presented.In view of the analysis of the seepage field distribution of the typical section under the most unfavorable working conditions, the method of FLAC3D numerical simulation is used to analyze the seepage field distribution of the bias tunnel.In this paper, the stress field, displacement field and plastic zone range of surrounding rock of tunnel are compared in the case of considering fluid-solid coupling and without considering the seepage of groundwater, respectively.Combined with field monitoring data, the influence of seepage field on bias effect of bias tunnel under fluid-solid coupling effect is analyzed.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U452.11

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李海濱;;偏壓隧道研究的必要性和方法[J];科技信息;2012年19期

2 張海亮,董志;黃土質(zhì)偏壓隧道施工技術(shù)[J];鐵道建筑技術(shù);2000年04期

3 楊小禮,李亮,劉寶琛;偏壓隧道結(jié)構(gòu)穩(wěn)定性評(píng)價(jià)的信息優(yōu)化分析[J];巖石力學(xué)與工程學(xué)報(bào);2002年04期

4 王立川,梁永豐;淺談偏壓隧道的支護(hù)設(shè)計(jì)[J];隧道建設(shè);2002年03期

5 鄭智軍,葉超明;黃土質(zhì)偏壓隧道施工工藝[J];廣東公路交通;2003年04期

6 侯軍亮;淺埋風(fēng)化偏壓隧道施工成洞技術(shù)[J];西部探礦工程;2003年10期

7 程新軍,程煒;淺埋偏壓隧道施工技術(shù)[J];鐵道建筑技術(shù);2004年S1期

8 胡彩虹;偏壓隧道施工技術(shù)[J];企業(yè)技術(shù)開發(fā);2005年06期

9 李素清;;偏壓隧道施工技術(shù)探究[J];西部探礦工程;2006年04期

10 陳見波;;淺埋偏壓隧道現(xiàn)場監(jiān)測(cè)與分析[J];山西建筑;2007年09期

相關(guān)會(huì)議論文 前10條

1 何川;;地形偏壓隧道的模型試驗(yàn)研究[A];第二屆全國青年巖石力學(xué)與工程學(xué)術(shù)研討會(huì)論文集[C];1993年

2 魯光宏;許云躍;;對(duì)偏壓隧道施工方法的初探[A];礦井建設(shè)與巖土工程技術(shù)新發(fā)展[C];1997年

3 王聯(lián);鄧剛;;都汶路淺埋偏壓隧道設(shè)計(jì)[A];中國公路學(xué)會(huì)2004年學(xué)術(shù)年會(huì)論文集[C];2004年

4 王磊;傅鋼;汪振偉;黃志強(qiáng);;關(guān)于淺埋偏壓隧道合理開挖進(jìn)尺的討論[A];第二屆全國巖土與工程學(xué)術(shù)大會(huì)論文集（上冊(cè)）[C];2006年

5 高廣運(yùn);楊長;馮世進(jìn);劉松玉;;淺埋偏壓隧道動(dòng)態(tài)模擬工程實(shí)例[A];中國土木工程學(xué)會(huì)第十二屆年會(huì)暨隧道及地下工程分會(huì)第十四屆年會(huì)論文集[C];2006年

6 高文學(xué);侯炳暉;孫西o，

本文編號(hào)：1769021