本文選題：探地雷達(dá) + 介電常數(shù)��； 參考：《長安大學(xué)》2014年碩士論文

【摘要】：近些年，隨著我國公路建設(shè)的迅速發(fā)展，對(duì)道路的質(zhì)量要求控制比較嚴(yán)格，而道路質(zhì)量檢測(cè)技術(shù)也相應(yīng)的越來越高。在早期，我國的檢測(cè)技術(shù)手段的效率比較低、隨機(jī)性很大、檢測(cè)的成本費(fèi)用較高、檢測(cè)儀的精確度不高、而且檢測(cè)機(jī)械對(duì)路面的損害有一定的影響，具有破壞性等特點(diǎn)。隨著檢測(cè)技術(shù)的不斷的改進(jìn)、不斷的完善，發(fā)明了一種探地雷達(dá)（簡稱GPR）設(shè)備，它作為一種現(xiàn)代道路新型檢測(cè)技術(shù)手段，對(duì)道路破壞性沒有影響。探地雷達(dá)主要是通過路面向下發(fā)射高頻的電磁波，由接收天線接收到返回路面的電磁波，電磁波在地下介質(zhì)中，以一種電性差異進(jìn)行接收電磁波的波形、振幅變化情況等特點(diǎn)來推斷介質(zhì)的空間狀態(tài)和結(jié)構(gòu)形態(tài)的一種電磁法探測(cè)方法。探地雷達(dá)利用其分辨率高和探測(cè)的速度之快等功能對(duì)所探測(cè)的對(duì)象進(jìn)行探測(cè)，在很多實(shí)際工程中得到了廣泛運(yùn)用，并且取得了良好的成果。 本文主要介紹了探地雷達(dá)的發(fā)展過程、雷達(dá)探測(cè)的基本原理、路面雷達(dá)的系統(tǒng)組成與測(cè)量參數(shù)的分析。并依據(jù)實(shí)體工程成渝高速公路，研究了探地雷達(dá)在現(xiàn)代道路工程結(jié)構(gòu)中的應(yīng)用，可以通過以下幾個(gè)方面來進(jìn)行研究： （1）簡要說明了探地雷達(dá)在國內(nèi)外的發(fā)展情況，以及國內(nèi)外在道路工程中探地雷達(dá)的應(yīng)用現(xiàn)狀，從而闡述本文的選題意義以及明確研究的內(nèi)容。 （2）通過了解探地雷達(dá)系統(tǒng)的構(gòu)成部分，和關(guān)于探地雷達(dá)的基本理論，同時(shí)介紹探地雷達(dá)的工作原理是通過接收電磁波的波形變化以及振幅的變化情況，通過探地雷達(dá)在道路工程中探測(cè)性能，以及相應(yīng)的性能指標(biāo)。探地雷達(dá)經(jīng)過對(duì)測(cè)線的布置、采集測(cè)定的數(shù)據(jù)、并對(duì)數(shù)據(jù)進(jìn)行一定的處理，分析探地雷達(dá)的新型檢測(cè)技術(shù)，并進(jìn)行更深入的分析和研究驗(yàn)證測(cè)定數(shù)據(jù)的處理效果。 （3）通過探地雷達(dá)對(duì)實(shí)體道路工程的結(jié)構(gòu)層進(jìn)行厚度的檢測(cè)，一般是采用鉆芯取樣來驗(yàn)證探地雷達(dá)測(cè)定厚度的精確程度。并且可以通過探地雷達(dá)測(cè)定的厚度與鉆芯的試樣進(jìn)行對(duì)比，來判定相應(yīng)的誤差控制范圍情況。 （4）在道路工程中車轍是一種常見的現(xiàn)象，可以通過探地雷達(dá)對(duì)路面形成的車轍進(jìn)行探測(cè)研究�？梢詮穆访孳囖H的深度、長度等幾何要素以及車轍形成的影響因素考慮，用探地雷達(dá)測(cè)定的數(shù)據(jù)進(jìn)行相關(guān)的有針對(duì)性處理。以車轍的幾何要素以及探地雷達(dá)測(cè)定處理后的數(shù)據(jù)相關(guān)聯(lián)系來對(duì)進(jìn)行車轍類型的判別。本文通過對(duì)具體路面形成的車轍斷面形態(tài)進(jìn)行研究車轍類型的識(shí)別辦法。 （5）本文通過在成渝高速公路上選取一段試驗(yàn)路段，進(jìn)行探地雷達(dá)對(duì)該試驗(yàn)路段的道路質(zhì)量進(jìn)行相關(guān)的檢測(cè)研究。結(jié)合探地雷達(dá)測(cè)定的有關(guān)數(shù)據(jù)和試驗(yàn)路段厚度的標(biāo)定對(duì)比，進(jìn)行檢測(cè)結(jié)果驗(yàn)證。
[Abstract]:In recent years, with the rapid development of highway construction in China, the quality control of the road is relatively strict, and the road quality detection technology is becoming higher and higher. In the early stage, the efficiency of the detection technology in our country is low, the randomness is very large, the cost of the detection is high, the precision of the detector is not high, and the detection machinery has certain influence on the road surface damage, which has the characteristics of destructiveness and so on. With the continuous improvement and perfection of the detection technology, a ground penetrating radar (GPR) equipment has been invented. As a new type of modern road detection technology, it has no influence on the road damage. Ground penetrating radar (GPR) mainly emits high frequency electromagnetic waves downwards through the road surface, and receives the electromagnetic waves returning to the road surface from the receiving antenna. The electromagnetic waves are received in underground media with a kind of electrical difference to receive the waveforms of the electromagnetic waves. An electromagnetic detection method for inferring the spatial state and structural shape of the medium with the characteristics of amplitude variation. Ground penetrating radar (GPR) has been widely used in many practical projects and achieved good results because of its high resolution and high detection speed. This paper mainly introduces the development process of ground penetrating radar, the basic principle of radar detection, the system composition of road surface radar and the analysis of measuring parameters. The application of ground penetrating radar (GPR) in modern road engineering structure is studied based on Chengdu-Chongqing Expressway, which can be studied in the following aspects: 1) the development of GPR at home and abroad and the application status of GPR in road engineering at home and abroad are briefly explained, and the significance of this topic and the content of the research are expounded. (2) by understanding the components of the GPR system and the basic theory of GPR, and introducing the working principle of GPR, the variation of waveform and amplitude of GPR is introduced. The detection performance of ground penetrating radar in road engineering and the corresponding performance index are discussed. The new detection technology of GPR is analyzed through the arrangement of the measuring lines, the collection of the measured data, and the processing of the data, and the processing effect of the measured data is verified by more in-depth analysis and research. (3) the thickness of structure layer of solid road engineering is detected by ground penetrating radar (GPR). Generally, the accuracy of GPR thickness measurement is verified by drilling core sampling. The error control range can be determined by comparing the thickness measured by ground penetrating radar with the sample of drill core. Rutting is a common phenomenon in road engineering, which can be detected by ground penetrating radar. Considering the geometric factors such as the depth and length of the rut and the influence factors of rut formation, we can use the data measured by the ground penetrating radar to deal with the relevant pertinence. Based on the geometric elements of rut and the data correlation after ground penetrating radar (GPR) determination and processing, the rut type is distinguished. In this paper, the identification method of rut type is studied through the rutting section shape of concrete pavement. In this paper, a section of experimental section is selected on Chengdu-Chongqing Expressway, and the road quality of the experimental section is detected by ground penetrating Radar (GPR). Based on the comparison of the data measured by GPR and the thickness of the test section, the test results are verified.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U416.217

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