TRT与水平钻探方法在隧道施工超前地质预报中的综合应用研究

水平钻探和TRT两种隧道超前地质预报方法各有其特点，在某新建城际铁路的隧道施工中综合应用这两种方法进行了超前地质预报。通过对该隧道同一洞段两种方法预报结果的对比分析，发现二者的预报结果可以相互映证。TRT法有速度快、成本低、探测范围大与成果可视化的优势，但其预报精度相对较低。水平钻探方法有精度高、可排除水及有害气体的特点，但其有施工困难、作业时间长及费用高的缺点。为保证隧道超前地质预报速度的同时提高预报精度，综合应用上述两种方法可发挥两种方法各自特点，先采用TRT做全洞段大范围预报，对TRT预报中发现的不

Comprehensive Application Research of TRT and Horizontal Drilling Method in Advanced Geological Forecast of Tunnel Construction

The two kinds of advancing geological forecast methods are TRT and horizontal drilling which has their own characteristics to the construction of tunnels. They are used in the tunnel of a new intercity railway in the construction. Through comparison and analysis of advancing geological forecast of two methods in the same tunnel section, this paper finds that the results of the two can be shown to each other. The TRT method has the advantages of fast speed, low cost, large detection range and visualization of results, but its prediction accuracy is relatively low. The horizontal drilling method has the characteristics of high precision and excluding water and harmful gas, but it has the disadvantages of difficult construction, long operation time and high cost. In order to ensure the tunnel geological prediction speed and improve the prediction accuracy, the comprehensive application of these two methods can appeal to play their respective characteristics. We first use TRT to do the whole hole wide range prediction, next we make accurate prediction for the bad geological section found by TRT prediction combined with horizontal drilling.