本文選題：運(yùn)營隧道 + 滲漏水機(jī)理��； 參考：《山東大學(xué)》2017年博士論文

【摘要】：隨著國民經(jīng)濟(jì)的快速發(fā)展,我國交通、水電工程等領(lǐng)域陸續(xù)建設(shè)一大批重大基礎(chǔ)工程,已是世界上隧道建設(shè)規(guī)模最大、發(fā)展速度最快、修建難度最高的國家。由于隧道地質(zhì)條件、地應(yīng)力作用及施工缺陷原因,襯砌開裂導(dǎo)致的滲漏水成為運(yùn)營隧道主要的病害之一,對隧道結(jié)構(gòu)的安全性和耐久性產(chǎn)生嚴(yán)重影響,威脅隧道安全健康,甚至危及到行車和行人安全。目前國內(nèi)外缺乏對隧道襯砌破裂無損精細(xì)探查理論技術(shù)及注漿治理效果有效的無損評價(jià)方法,對隧道襯砌滲漏水及注漿封堵機(jī)理缺乏深入研究,運(yùn)營隧道滲漏水病害治理已成為制約隧道健康服役的關(guān)鍵難題,開展運(yùn)營期隧道襯砌滲漏水機(jī)理與注漿治理研究,具有重大的理論意義和工程價(jià)值。本文通過調(diào)查研究、數(shù)值模擬、模型試驗(yàn)及工程應(yīng)用驗(yàn)證方法,深入研究了運(yùn)營隧道襯砌滲漏水機(jī)理與注漿治理技術(shù),主要研究成果如下:(1)采用非連續(xù)方法對富水破碎圍巖隧道襯砌破壞進(jìn)行了研究,揭示了襯砌支護(hù)時(shí)機(jī)、厚度、施工期注漿加固圈厚度、注漿加固效果、排水條件對隧道襯砌受力及開裂的影響規(guī)律。(2)采用有限差分方法研究了導(dǎo)水型斷層隧道襯砌破壞滲漏水機(jī)理,揭示了不同傾角斷層及不同滲透率對隧道襯砌受力及開裂的影響。研發(fā)了隧道襯砌滲漏水病害三維模型試驗(yàn)系統(tǒng),以濟(jì)南市旅游路開元隧道滲漏水治理工程為依托,開展了大型模型試驗(yàn),揭示了隧道穿越斷層時(shí)的圍巖與襯砌的變形、受力、破壞與襯砌破裂滲漏水成因,得到了注漿封堵過程中排水對襯砌泄壓的影響規(guī)律。(3)建立了單一非貫通裂隙注漿模型,揭示了單一非貫通裂隙注漿過程中的變形與注漿封堵機(jī)制。開展了不同注漿材料對不同傾角裂隙加固效果試驗(yàn),基于裂隙襯砌等效代替方法,開展了有限元分析,揭示了注漿前后圍巖應(yīng)力、位移演化規(guī)律。(4)提出了基于地質(zhì)雷達(dá)探測的隧道襯砌缺陷和病害精細(xì)檢測及注漿加固效果評價(jià)方法,開展了系統(tǒng)的正演模擬與成像數(shù)值試驗(yàn),建立了典型襯砌病害的地質(zhì)雷達(dá)探測解釋準(zhǔn)則,提出了襯砌滲漏水病害注漿加固效果的評價(jià)標(biāo)準(zhǔn)和方法,最終形成了基于"反射圖像、歸位成像、頻譜特征"綜合分析的隧道襯砌缺陷和病害精細(xì)化檢測以及注漿加固效果評價(jià)方法。(5)針對濟(jì)南市旅游路開元隧道滲漏水治理工程,完成了隧道滲漏水統(tǒng)計(jì)和類型劃分,采用本文提出的"反射圖像、歸位成像、頻譜特征"綜合分析的隧道襯砌缺陷和病害精細(xì)化檢測理論技術(shù),實(shí)現(xiàn)了襯砌開裂、空洞和滲漏水病害的較精確識別和定位,根據(jù)論文注漿材料室內(nèi)試驗(yàn)成果和現(xiàn)場試驗(yàn),確定了開元隧道注漿材料并進(jìn)行實(shí)施。應(yīng)用論文成果—基于地質(zhì)雷達(dá)注漿加固效果的評價(jià)方法進(jìn)行注漿效果評價(jià),成功解決了開元隧道122處襯砌滲漏水封堵治理難題,取得良好的經(jīng)濟(jì)效益和社會(huì)效益。
[Abstract]:With the rapid development of the national economy, a large number of major basic projects have been built in the fields of transportation, hydropower engineering and other fields in China, which have become the countries with the largest scale, the fastest development speed and the highest difficulty in the construction of tunnels in the world.Because of the geological conditions, in-situ stress and construction defects, leakage caused by lining cracking has become one of the main diseases of the tunnel, which has a serious impact on the safety and durability of the tunnel structure and threatens the safety and health of the tunnel.Even endangers the safety of traffic and pedestrians.At present, there is a lack of effective non-destructive evaluation method for the theory and technology of non-destructive fine exploration of tunnel lining rupture and grouting treatment effect, and the deep research on tunnel lining leakage and grouting plugging mechanism.The treatment of tunnel leakage disease has become a key problem restricting the healthy service of tunnel. It is of great theoretical significance and engineering value to study the mechanism of tunnel lining leakage and grouting treatment during operation period.Through investigation and research, numerical simulation, model test and engineering application verification method, this paper deeply studies the leakage mechanism and grouting treatment technology of tunnel lining.The main research results are as follows: (1) discontinuous method is used to study the lining failure of water-rich broken surrounding rock tunnel, which reveals the lining support opportunity, thickness, grouting reinforcement ring thickness, grouting reinforcement effect,The influence of drainage conditions on the stress and cracking of tunnel lining. (2) the failure and leakage mechanism of tunnel lining with water-conducting fault is studied by means of finite difference method, and the influence of different dip faults and different permeability on the stress and cracking of tunnel lining is revealed.The 3D model test system of tunnel lining leakage disease is developed. Based on the seepage treatment project of Kaiyuan tunnel in Jinan City, a large-scale model test is carried out, which reveals the deformation and force of surrounding rock and lining when the tunnel passes through the fault.The causes of failure and leakage of lining rupture and leakage are obtained. The influence of drainage on the pressure release of lining during grouting and plugging is obtained. (3) A single non-penetrating fissure grouting model is established, and the deformation and grouting plugging mechanism in the grouting process of single non-penetrating crack are revealed.Based on the equivalent replacement method of crack lining, the finite element analysis is carried out, and the stress of surrounding rock before and after grouting is revealed.In this paper, a method of fine detection of tunnel lining defects and defects and evaluation of grouting reinforcement effect based on ground penetrating radar detection is put forward, and a systematic forward simulation and imaging numerical test are carried out.The criterion of geological radar detection and interpretation of typical lining diseases is established, and the evaluation standard and method of grouting reinforcement effect of lining leakage diseases are put forward. Finally, based on the reflection image, the image of homing is formed.Comprehensive analysis of tunnel lining defects and defects and evaluation method of grouting reinforcement effect. According to the leakage treatment project of Kaiyuan tunnel in Jinan tourist road, the statistics and classification of tunnel leakage water are completed.Based on the theory of "reflection image, homing imaging, spectrum characteristic", which is proposed in this paper, the tunnel lining defect and disease fine detection theory technology is proposed, which realizes the accurate identification and location of lining crack, cavity and leakage disease.According to the laboratory test results and field tests of grouting materials, Kaiyuan tunnel grouting materials are determined and implemented.The evaluation method based on the geological radar grouting reinforcement effect is applied to evaluate the grouting effect, which successfully solves the difficult problem of sealing and treating the leakage water of 122 lining lining in Kaiyuan Tunnel, and obtains good economic and social benefits.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2017
【分類號】：U457.2
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本文編號：1736804