【摘要】：由于我國(guó)的山區(qū)面積龐大,地貌地形的條件比較復(fù)雜,那么在此復(fù)雜條件下修建山嶺隧道時(shí),往往會(huì)遇到地下水豐富地區(qū),高壓富水的問(wèn)題也會(huì)相應(yīng)而來(lái)。在隧道工程中,如何計(jì)算作用在襯砌結(jié)構(gòu)上的水壓力和隧道開(kāi)挖過(guò)程中的斷面涌水量,以及在水壓力荷載作用下襯砌結(jié)構(gòu)的安全性等等這些問(wèn)題,都是隧道滲流場(chǎng)中相當(dāng)重要的研究?jī)?nèi)容。根據(jù)資料整理,已有研究報(bào)道多針對(duì)隧道滲流場(chǎng)中單一因素進(jìn)行獨(dú)立研究,未結(jié)合多因素進(jìn)行綜合研究。本文通過(guò)南大梁高速華鎣山隧道工程結(jié)合等效襯砌概念,并結(jié)合正交試驗(yàn)對(duì)滲流場(chǎng)中六種影響因素進(jìn)行分析,并對(duì)最顯著影響因素進(jìn)行了有效區(qū)間分析,所取得的主要研究成果如下:(1)通過(guò)等效襯砌原則計(jì)算襯砌外水壓,與"堵水限排"結(jié)構(gòu)下復(fù)合襯砌外水壓進(jìn)行對(duì)比,經(jīng)過(guò)試算,得出了合理的等效襯砌滲透系數(shù)。(2)將等效襯砌、"堵水限排"復(fù)合襯砌和軸對(duì)稱解三種計(jì)算方法下的襯砌外水壓和隧道涌水量分別進(jìn)行對(duì)比,事實(shí)證明"堵水限排"下襯砌外水壓和隧道涌水量可以用等效襯砌方法進(jìn)行計(jì)算,且等效襯砌方法在理論上也是可行的。(3)基于軸對(duì)稱理論解,分析得出隧道滲流場(chǎng)影響因素為:等效襯砌滲透系數(shù)(隧道排水能力)、等效襯砌厚度、初期支護(hù)滲透系數(shù)、初期支護(hù)厚度、注漿圈滲透系數(shù)、注漿圈厚度。采用正交試驗(yàn)結(jié)合等效襯砌方法進(jìn)行影響敏感度研究發(fā)現(xiàn):等效襯砌滲透系數(shù)(隧道排水能力)為影響隧道滲流場(chǎng)最顯著的因素。(4)隧道滲流場(chǎng)中,等效襯砌水壓和隧道滲流量并不是一直隨等效襯砌滲透系數(shù)的變化而發(fā)生線性變化,而是存在一定的有效影響區(qū)間。研究分析可知,南大梁高速華鎣山隧道的等效襯砌滲透系數(shù)有效影響區(qū)間為1.04× 10-7cm/s～2.04×1-6cm/s。
[Abstract]:Because the mountainous area of our country is huge and the conditions of landform and topography are quite complex, when constructing the mountain tunnel under this complex condition, we often encounter the area rich in groundwater and the problem of high pressure and rich in water. In the tunnel engineering, how to calculate the water pressure acting on the lining structure and the cross-section water inflow during tunnel excavation, as well as the safety of the lining structure under the action of water pressure, and so on. All of them are very important research contents in tunnel seepage field. According to the data collation, most of the previous studies have carried out independent research on the single factor in the tunnel seepage field, but have not carried on the comprehensive research with the combination of the multi-factors. Based on the concept of equivalent lining in Nandaliang high-speed Huayingshan tunnel project and orthogonal test, six factors affecting seepage field are analyzed in this paper, and the most significant influencing factors are analyzed in effective interval. The main results obtained are as follows: (1) the external water pressure of the lining is calculated by the equivalent lining principle, and compared with the external water pressure of the composite lining under the structure of "blocking water limit and discharge". The reasonable permeability coefficient of the equivalent lining is obtained. (2) the external water pressure of the lining and the water inflow of the tunnel are compared with the calculation methods of the equivalent lining, the "water blocking and drainage" composite lining and the axisymmetric solution, respectively. It is proved that the external water pressure and tunnel water inflow can be calculated by the equivalent lining method, and the equivalent lining method is feasible in theory. (3) based on the axisymmetric theoretical solution, the water pressure and the tunnel water inflow can be calculated by the equivalent lining method. (3) based on the axisymmetric theoretical solution, The influence factors of tunnel seepage field are as follows: equivalent lining permeability coefficient (tunnel drainage capacity), equivalent lining thickness, initial support permeability coefficient, initial support thickness, grouting ring permeability coefficient, grouting ring thickness. Orthogonal test combined with equivalent lining method is used to study the influence sensitivity. It is found that the permeability coefficient of the equivalent lining (tunnel drainage capacity) is the most significant factor affecting the tunnel seepage field. (4) in the tunnel seepage field, the permeability coefficient of the equivalent lining is the most significant factor. The water pressure of the equivalent lining and the seepage rate of the tunnel do not change linearly with the change of the permeability coefficient of the equivalent lining, but there is a certain effective influence interval. The results show that the effective influence range of equivalent lining permeability coefficient of Nandaliang high-speed Huayingshan tunnel is 1.04 脳 10 ~ 7 cm ~ 2.04 脳 1-6 cm ~ (- 2. 04 脳 1 ~ (- 6) cm 路cm ~ (- 1).
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U452.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 侯旭豐;高波;申玉生;陳熹;李亮;;基于正交試驗(yàn)淺埋暗挖洞樁法車站邊樁的影響因素分析[J];鐵道科學(xué)與工程學(xué)報(bào);2016年12期

2 王志杰;何晟亞;王國(guó)棟;王寧;何明磊;;軸對(duì)稱解析解對(duì)馬蹄形隧道襯砌水壓力及滲透量適用性研究[J];武漢大學(xué)學(xué)報(bào)(工學(xué)版);2016年01期

3 程庭;;隧道涌水量計(jì)算的尷尬困境和研究現(xiàn)狀[J];西部探礦工程;2013年10期

4 薛佳;;隧道襯砌外水壓力的理論與數(shù)值研究分析[J];石家莊鐵道大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年S2期

5 劉學(xué)增;張鵬;周敏;;縱向裂縫對(duì)隧道襯砌承載力的影響分析[J];巖石力學(xué)與工程學(xué)報(bào);2012年10期

6 鄭波;王建宇;吳劍;;軸對(duì)稱解對(duì)隧道襯砌水壓力計(jì)算的適用性研究[J];現(xiàn)代隧道技術(shù);2012年01期

7 鄭波;王建宇;吳劍;;基于等效滲透系數(shù)計(jì)算襯砌水壓力方法研究[J];現(xiàn)代隧道技術(shù);2011年06期

8 宋戰(zhàn)平;荊敏;韓日美;吳煥通;;基于強(qiáng)度安全系數(shù)概念的隧道襯砌結(jié)構(gòu)優(yōu)選設(shè)計(jì)[J];西安建筑科技大學(xué)學(xué)報(bào)(自然科學(xué)版);2010年04期

9 王建宇;;隧道圍巖滲流和襯砌水壓力荷載[J];鐵道建筑技術(shù);2008年02期

10 宋玉香;景詩(shī)庭;朱永全;;隧道結(jié)構(gòu)系統(tǒng)可靠度研究[J];巖土力學(xué);2008年03期

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