本文選題：隧道超前預(yù)報(bào)　切入點(diǎn)：探地雷達(dá)　出處：《長(zhǎng)江科學(xué)院院報(bào)》2017年08期 　論文類型：期刊論文

【摘要】：為了在隧道工程中準(zhǔn)確應(yīng)用探地雷達(dá)進(jìn)行超前預(yù)報(bào),針對(duì)可能遇到的常見干擾和典型不良地質(zhì)體,探討了常見干擾的成因及其對(duì)資料解譯的影響,確定常見的干擾剖面圖,并分別對(duì)天線耦合干擾和金屬物干擾進(jìn)行舉例分析,提出探地雷達(dá)在采集數(shù)據(jù)過程中避開干擾的注意事項(xiàng)。列舉3個(gè)工程實(shí)例,分別介紹了探地雷達(dá)對(duì)溶洞、斷層裂隙水、軟弱夾層等不良地質(zhì)體的預(yù)報(bào)研究,通過分析其典型雷達(dá)剖面圖的波形、頻率、振幅等特征,依此推斷出隧道開挖掌子面前方潛在不良地質(zhì)體的類型以及位置、構(gòu)造走向等空間分布特征。該結(jié)果與實(shí)際開挖揭示的不良地質(zhì)體的分布范圍基本一致,驗(yàn)證了探地雷達(dá)在預(yù)報(bào)隧道常見不良地質(zhì)體的可行性和有效性。通過總結(jié)分析常見雷達(dá)干擾圖像和典型不良地質(zhì)體剖面圖,有助于物探工作者對(duì)復(fù)雜地質(zhì)體進(jìn)行更精確地解釋,確保隧道施工安全。
[Abstract]:In order to accurately apply ground penetrating radar to advance prediction in tunnel engineering, the causes of common interference and its influence on interpretation of data are discussed in view of the common interference and typical bad geological body, and the common interference profile is determined. The antenna coupling interference and metal object interference are analyzed respectively, and the points for attention to avoid jamming in the process of data acquisition by ground penetrating radar are put forward. Three engineering examples are given, and the ground penetrating radar to karst cave and fault fissure water are introduced respectively. Based on the analysis of the waveform, frequency, amplitude and other characteristics of typical radar profiles, the types and positions of potentially bad geological bodies in front of the face of tunnel excavation are inferred by studying the prediction of poor geological bodies such as weak intercalations, and by analyzing the waveform, frequency and amplitude of typical radar profiles. The result is basically consistent with the distribution range of the bad geological body revealed by the actual excavation. The feasibility and effectiveness of ground penetrating radar in predicting common bad geological bodies in tunnels are verified. By summing up and analyzing common radar jamming images and typical bad geological body profiles, it is helpful for geophysical researchers to interpret complex geological bodies more accurately. Ensure the safety of tunnel construction.
【作者單位】： 中交第二公路勘察設(shè)計(jì)研究院有限公司武漢中交巖土工程有限責(zé)任公司;長(zhǎng)江科學(xué)院水利部巖土力學(xué)與工程重點(diǎn)實(shí)驗(yàn)室;
【分類號(hào)】：P631.3;U452.11
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本文編號(hào)：1588737