a国产,中文字幕久久波多野结衣AV,欧美粗大猛烈老熟妇,女人av天堂

當前位置:主頁 > 科技論文 > 路橋論文 >

裂隙水滲流對隧道圍巖穩(wěn)定性的影響

發(fā)布時間:2019-06-07 13:59
【摘要】:為了保證隧道結構在高水位段富水區(qū)的安全穩(wěn)定,必須解決外水壓力對隧道襯砌的作用問題。在實際的工程中,地下水的突涌十分常見,要解決此類問題,就必須摸清地下水在裂隙巖體中的滲流規(guī)律和對隧道的影響。因此,對地下水的滲流進行分析和研究是十分有必要的。本文運用地下水滲流場分析原理,以重慶市雙碑隧道依托工程為背景,進行了以下幾個方面的研究:(1)隧道的施工開挖,將會導致原本穩(wěn)定的圍巖應力場和滲流場產生了重分布。開挖完成后,新形成的應力場和滲流場逐漸趨于穩(wěn)定。求出圍巖和襯砌中各個點的滲流速度,得到最大滲流速度和最小滲流速度的位置。(2)分別求出滲流前后襯砌外輪廓線上的變形量、等效應力、等效應變、X方向的應力應變和Y方向的應力應變。將滲流前后的數(shù)據(jù)進行比較,分析在應力場與滲流量場相互作用的過程中,兩者之間的影響。(3)求解不同的因素對隧道襯砌滲流的影響:(1)當只存在圍巖的級別不相同時,即在分別在Ⅴ級、Ⅳ級和Ⅲ級圍巖的情況下,滲流對隧道襯砌水平方向和豎直方向的變形量和應力的影響;(2)當只存在隧道的凈距不相同時,即分別在10米、20米和30米的凈距下,滲流對隧道襯砌水平方向和豎直方向的變形量和應力的影響。
[Abstract]:In order to ensure the safety and stability of the tunnel structure in the rich water area of the high water level section, it is necessary to solve the problem of the effect of the external water pressure on the tunnel lining. In practical engineering, groundwater surge is very common. In order to solve this kind of problem, it is necessary to find out the seepage law of groundwater in fissured rock mass and its influence on tunnel. Therefore, it is very necessary to analyze and study the seepage of groundwater. Based on the principle of groundwater seepage field analysis and the background of Shuangbei Tunnel in Chongqing, the following aspects are studied in this paper: (1) the construction and excavation of the tunnel, It will lead to the redistribution of the stress field and seepage field of the original stable surrounding rock. After excavation, the newly formed stress field and seepage field tend to be stable. The seepage velocity of each point in surrounding rock and lining is obtained, and the positions of maximum seepage velocity and minimum seepage velocity are obtained. (2) the deformation, equivalent stress and equivalent effect on the outer profile of lining before and after seepage are calculated respectively. The stress and strain in the X direction and the stress and strain in the Y direction. The data before and after seepage are compared, and the interaction between stress field and seepage flow field is analyzed. The influence between the two. (3) to solve the influence of different factors on the seepage of tunnel lining: (1) when there is only different grade of surrounding rock, that is, in the case of grade V, IV and III surrounding rock, The influence of seepage on the deformation and stress of tunnel lining in horizontal and vertical directions; (2) when the net distance of the tunnel is not the same, that is, at the net distance of 10 m, 20 m and 30 m, the influence of seepage on the deformation and stress in the horizontal and vertical direction of the tunnel lining.
【學位授予單位】:重慶交通大學
【學位級別】:碩士
【學位授予年份】:2016
【分類號】:U451.2

【參考文獻】

相關期刊論文 前10條

1 劉建偉;;晉華礦首采工作面涌水量預計[J];煤炭與化工;2015年06期

2 汪劍;張學強;譚青松;曹成有;王長偉;;煤層氣雙相均勻介質地震波場正演模擬淺析[J];工程地球物理學報;2014年05期

3 張文U,

本文編號:2494849


資料下載
論文發(fā)表

本文鏈接:http://www.wukwdryxk.cn/kejilunwen/daoluqiaoliang/2494849.html


Copyright(c)文論論文網(wǎng)All Rights Reserved | 網(wǎng)站地圖 |

版權申明:資料由用戶14b19***提供,本站僅收錄摘要或目錄,作者需要刪除請E-mail郵箱bigeng88@qq.com
欧美日韩激情在线| 久久久偷拍| 四虎国产精品成人免费久久| 国产精品制服丝袜无码| 施甸县| www午夜| 粉嫩av一区二区三区高清| 亚洲色婷婷六月亚洲婷婷6月| 亚洲午夜成人精品电影在线观看| 亚洲国产成人精品无码区四虎| 日韩av影视| 国产a自拍| 色淫视频| 学生妹亚洲一区二区| 8AV国产精品爽爽ⅴa在线观看| 亚洲精品中文字幕无码AV| 国产女人高潮抽搐喷水视频| 国产精品成人va在线播放 | 亚洲国产精品久久久天堂不卡海量 | 欧美老司机| 久久久www| 欧美午夜在线| 日本xx18| 女同一区二区| 国产日韩欧美一区二区| 水蜜桃10| 国产av激情| 91久久久精品无码一区二区 | 久久99九九精品久久久久蜜桃| 中文字幕人妻无码乱精品| 久久这里只有精品视频9 | 久久精品国产99久久6| 亚洲精品一区国产精品丝瓜| 一本色道久久综合| www.av网站| 2022天天躁狠狠燥| 日韩 欧美 亚洲| 韩国无遮挡无删减免费软件| 日本久久综合| 丝袜一区| 久久色综合|