CFC预测技术在马来西亚TBM隧道探水中的实践

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图像的颜色表示含水量的大小，蓝色为含水量最大，绿色次之，红色最少。预报结果显示掌子面前方150-180m处存在大量含水岩体，其中包括一处较大的水突。进行围岩电磁波速扫描，得到预报区段隧道围岩平均电磁波速为0.159m/ns，平均相对介电常数为6.252。此段预报结果围岩湿润，实际开发结果与之相符。现场验证掌子面前方150m处确实存在大量含水岩体和水突，预报结果准确。总体来说，CFC超前探水技术在该工程中的应用效果良好，为隧道施工提供了可靠的数据支持，提高了隧道施工的安全性和效率。

The horizontal coordinate of the image represents the relative distance from the opening position and the distance from the rock face. The blue and navy blue stripes indicate strong coherent energy, strong reflection waves, and interfaces with h

igh water content. Green indicates medium water content, while red indicates low water content. Through electromagnetic wave speed scanning of the tunnel surrounding rock, the predicted average electromagnetic wave speed of the tunnel surroundin

g rock segment is 0.108m/ns, and the average relative dielectric constant is 9.243. The on-site verification of the prediction results shows that there is water seepage 29 meters in front of the rock face, which is consistent with the excavation

results. The rain-like condition from 35 to 42 meters, drops of water-rain-like condition from 56 to 62 meters, and rain-like condition from 66 to 80 meters all match the excavation results. Conclusion: Based on two continuous water explorati

on and prediction work and on-site tracking verification, the accuracy rate of CFC water exploration is more than 90%, which truly meets the requirements of simple operation and accurate prediction, and greatly meets the production needs of the

tunnel.

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