本文選題：探地雷達(dá) + 不良地質(zhì)體�。� 參考：《長(zhǎng)沙理工大學(xué)》2015年碩士論文

【摘要】：近年來(lái),隧道及地下工程建設(shè)作為一項(xiàng)民生建設(shè)項(xiàng)目,其發(fā)展加快了國(guó)民經(jīng)濟(jì)和社會(huì)的發(fā)展。但是隨著地質(zhì)與環(huán)境條件的復(fù)雜化,建設(shè)隧道及地下工程難度加大,工程事故也屢見不鮮。隧道地質(zhì)超前預(yù)報(bào)由于在技術(shù)上保障了隧道及地下工程建設(shè)的安全和進(jìn)度,成為施工過(guò)程中不可取代的環(huán)節(jié)。探地雷達(dá)技術(shù)以其探測(cè)效率高、探測(cè)效果好在近年來(lái)不僅在隧道地質(zhì)超前預(yù)報(bào)領(lǐng)域有較多的應(yīng)用,還在探測(cè)隱蔽物工程中有廣泛應(yīng)用。但在隧道中的應(yīng)用也存在諸多的不足,例如電磁波容易受到干擾、信號(hào)不穩(wěn)定、探測(cè)深度不足、缺乏規(guī)范的解譯技術(shù)、預(yù)報(bào)不能定量化等。本文依托長(zhǎng)湘高速公路獅子壟隧道工程實(shí)例,針對(duì)軟弱圍巖隧道工程的要求以及探地雷達(dá)對(duì)數(shù)據(jù)處理解譯方面的不足,主要的工作內(nèi)容概述如下:(1)總結(jié)探地雷達(dá)運(yùn)用于隧道地質(zhì)超前預(yù)報(bào)電磁波在不同環(huán)境下的傳播特征以及規(guī)律,從理論上論證探地雷達(dá)運(yùn)用于隧道地質(zhì)超前預(yù)報(bào)的可行性和優(yōu)越性。(2)結(jié)合工程實(shí)際情況和理論,設(shè)計(jì)了一套針對(duì)獅子壟隧道不良地質(zhì)體探測(cè)的的參數(shù)取值,并運(yùn)用于實(shí)際,對(duì)富水帶和節(jié)理裂隙帶在不同條件下進(jìn)行探測(cè)。結(jié)合長(zhǎng)湘高速以及其他類似工程經(jīng)驗(yàn),采用Radan5.0數(shù)據(jù)處理軟件,對(duì)獅子壟隧道富水帶和節(jié)理裂隙帶探測(cè)數(shù)據(jù)進(jìn)行處理。(3)針對(duì)隧道施工過(guò)程中常遇到的不同程度富水帶、節(jié)理裂隙帶等特殊地質(zhì)情況下,對(duì)雷達(dá)波波形堆積圖上特征信息進(jìn)行歸納總結(jié)。采用頻譜分析和復(fù)信號(hào)分析技術(shù)進(jìn)行頻率、振幅和相位的定量分析,對(duì)主頻值和頻帶帶寬進(jìn)行定量研究,進(jìn)一步提高了特殊地質(zhì)條件下超前預(yù)報(bào)的準(zhǔn)確性。
[Abstract]:In recent years, the construction of tunnel and underground engineering, as a project of people's livelihood, has accelerated the development of national economy and society. However, with the complexity of the geological and environmental conditions, the difficulty of building tunnel and underground engineering is more difficult, and the engineering accidents are also common. The tunnel geological prediction has ensured the tunnel and underground because of the technology. The safety and progress of engineering construction have become an indispensable link in the construction process. The ground penetrating radar technology, with its high detection efficiency and good detection effect, has not only been widely used in the field of tunnel geological prediction in recent years, but also widely used in the detection of concealment engineering. However, there are many shortcomings in the application of the tunnel. For example, the electromagnetic wave is easily disturbed, the signal is unstable, the detection depth is insufficient, the standard interpretation technology is lacking, and the prediction can not be quantified. This paper is based on the example of the lion ridge tunnel project of Changxiang expressway, and summarizes the main work content in view of the requirements of the tunnel engineering of the weak surrounding rock and the shortcomings of the ground penetrating radar in the interpretation of data processing. The following are as follows: (1) the feasibility and superiority of ground penetrating radar used in tunnel geological prediction are theoretically proved by using GPR to predict the propagation characteristics and laws of electromagnetic waves in different environments. (2) a set of detection of bad geological bodies for the lion ridge tunnel is designed in combination with the actual situation and theory of the project. The value of the parameters, and used in practice, to detect the rich water zone and joint fracture zone under different conditions. Combined with the Long Xiang high-speed and other similar engineering experience, the Radan5.0 data processing software is used to locate the exploration data of the rich water zone and the joint fissure zone of the lion ridge tunnel. (3) the difference in the tunnel construction process is different. The characteristic information on the radar wave shape accumulation chart is summed up under the special geological conditions such as the degree of water rich zone and the joint fracture zone. The frequency, amplitude and phase of the frequency, amplitude and phase are quantitatively analyzed by spectrum analysis and complex signal analysis technology. The quantitative analysis of the main frequency and band bandwidth has been carried out to further improve the pre pre preconditioning under special geological conditions. The accuracy of the newspaper.

【學(xué)位授予單位】：長(zhǎng)沙理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U452.11

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