摘要
在隧洞超前地质预报中的TRT技术应用越来越广泛,但其成果解译一直是超前地质预报工作的重点和难点,目前常用的解译方法相对单一,效果也不甚理想。基于此,文章针对目前TRT成果解译过程中存在的预测依据与测试区实际地质条件结合程度相对较低、灾害体的发育程度及部位预测准确性相对较低等问题,提出了相应的改进方法,通过将TRT测试段的实际地质条件导入GOCAD软件中创建模型,再将TRT测试所得三维数据导入模型中,使其成为模型的一部分,实现了TRT成果图像与实际地质条件之间的互联互通;通过增加成果图像中色谱组合颜色的种类,使成果图像在反映灾害体的同时,能够反映其发育程度;通过将隧洞坐标和TRT测试数据同时导入GOCAD中创建模型,明确了灾害体与隧洞之间的位置关系,实现了对灾害体发育部位和规模的精确预报。实例应用表明,改进后的成果解译方法能够大大提高TRT超前地质预报的准确性和精度,具有较好的应用前景。
The TRT technology has been more and more widely applied to tunnel geological prediction.However,the result interpretation is always the key and difficult point in geological prediction,since there are a few kinds of interpretation methods and the results are not quite precise.Aiming at the problems in result interpretation of TRT,such as the low combining degree of prediction criteria with actual geological conditions of test area and low prediction accuracy of disaster body′s development degree and position,some corresponding improvement methods were proposed,namely the actual geological conditions of TRT test section were introduced to GOCAD to create a model and then the TRT 3 D data were introduced to the model,realizing the interconnection between TRT test images and actual geological conditions.By adding varieties of color combination in the result image,the TRT result image can reflect both the disaster body and its development degree.A model was established by introducing tunnel coordinates and TRT test data to GOCAD,and the relative position relation between the disaster body and tunnel is understood,the precise prediction of development position and scale of disaster body was realized.Case application shows the improved TRT result interpretation method can greatly increase the accuracy and precision of TRT geological prediction.
作者
原先凡
廖丹
YUAN Xianfan;LIAO Dan(PowerChina Chengdu Engineering Corporation Limited,Chengdu 610072;Construction Investment and Management Co.,Ltd.,CDCI,Chengdu 610037)
出处
《现代隧道技术》
EI
CSCD
北大核心
2019年第3期18-24,共7页
Modern Tunnelling Technology
