现代隧道技术
現代隧道技術
현대수도기술
Modern Tunnelling Technology
2015年
4期
173-178
,共6页
曾琛超%陈方伟%武建力%谢雄耀%王善高
曾琛超%陳方偉%武建力%謝雄耀%王善高
증침초%진방위%무건력%사웅요%왕선고
盾构隧道%探地雷达%正演模拟%一致性消除法%钢筋多次波
盾構隧道%探地雷達%正縯模擬%一緻性消除法%鋼觔多次波
순구수도%탐지뢰체%정연모의%일치성소제법%강근다차파
Shield tunnel%GPR%Forward simulation%Consistent information removal method%Multiple reflection waves produced by rebars
探地雷达技术现已广泛应用于盾构隧道的病害检测中,然而隧道衬砌内钢筋产生的多次波反射,给雷达数据的解释带来了极大困难。文章基于对盾构隧道常见病害的研究实例,采用GprMax2D软件对隧道衬砌壁后注浆不均和隧道管片存在裂缝的两种典型工况进行了探地雷达正演模拟,应用一致性消除法处理模拟数据,有效压制了隧道衬砌正演模拟中钢筋多次波的影响,成功获取了上述两种典型工况下的雷达图像特征,验证了该方法的有效性。
探地雷達技術現已廣汎應用于盾構隧道的病害檢測中,然而隧道襯砌內鋼觔產生的多次波反射,給雷達數據的解釋帶來瞭極大睏難。文章基于對盾構隧道常見病害的研究實例,採用GprMax2D軟件對隧道襯砌壁後註漿不均和隧道管片存在裂縫的兩種典型工況進行瞭探地雷達正縯模擬,應用一緻性消除法處理模擬數據,有效壓製瞭隧道襯砌正縯模擬中鋼觔多次波的影響,成功穫取瞭上述兩種典型工況下的雷達圖像特徵,驗證瞭該方法的有效性。
탐지뢰체기술현이엄범응용우순구수도적병해검측중,연이수도츤체내강근산생적다차파반사,급뢰체수거적해석대래료겁대곤난。문장기우대순구수도상견병해적연구실례,채용GprMax2D연건대수도츤체벽후주장불균화수도관편존재렬봉적량충전형공황진행료탐지뢰체정연모의,응용일치성소제법처리모의수거,유효압제료수도츤체정연모의중강근다차파적영향,성공획취료상술량충전형공황하적뢰체도상특정,험증료해방법적유효성。
Ground Penetrating Radar (GPR) is widely used for the detection of shield tunnel defects, but multiple reflection waves produced by lining rebars cause great difficulties for data interpretation. This paper analyzes common defects in shield tunnels and presents GPR forward simulations that were carried out using GprMax2D software based on two typical conditions: uneven backfill grouting and segment cracking. By using the consistent information removal method, the characteristics of the radar images were obtained successfully without the influence of multiple reflection waves.