| 摘要 |
The present invention discloses a tunnel construction large-scale integrated geophysical advanced detection model test device. The model test device includes a tunnel surrounding rock, a main tunnel model, a model test case, a water-containing geological structure device, a numerical control automated construction device and a main control chamber. The model test device is a large-scale integrated geophysical advanced detection model test device meeting the detection using a seismic wave method, an electromagnetic method and a direct-current electric method. By using the geophysical advanced detection model test device, the geophysical response features of the water-containing geological structure device in front of a tunnel face may be studied, multiple geophysical advanced detection forward and inversion methods for the water-containing geological structure device are verified, and the relationship between some geophysical detection method results and water burst quantity is studied, so as to lay a test foundation for the advanced prediction and water burst quantity prediction of the water-containing geological construction device in actual engineering. |
| 主权项 |
1. A tunnel construction large-scale integrated geophysical advanced detection model test device, comprising a tunnel surrounding rock, a main tunnel model, a model test case, a water-containing geological structure device, a numerical control automated construction device, horizontal detection boreholes and a main control chamber, wherein the tunnel surrounding rock is filled in the model test case, the main tunnel model of a model test is positioned in the middle of the front of the model test case, the water-containing geological structure device is arranged in front of the main tunnel model, the numerical control automated construction device is mounted on the top of the model test case, the horizontal detection boreholes are arranged in the model test device, and the main control chamber is positioned outside the model test case and communicates with the water-containing geological structure device and the numerical control automated construction device;
the tunnel surrounding rock is used for simulating the condition of the tunnel surrounding rock in actual tunnel construction and is a similar material simultaneously meeting the requirements of seismic wave field, electromagnetic field and direct-current electric field detection for resistivity and wave velocity, and the similar material is formed by mixing and compacting the following components in parts by mass:soil100 partscement4-20 partsgravel10-25 parts, wherein the water content of the soil is controlled to be 8-16%, and the compactness of the whole similar material is controlled to be 0.75-0.95; the soil and the gravel are aggregates of the similar material, the cement is a cementing agent, the gravel is 3-4 meshes, and the cement is directly mixed as dry powder; and the wave velocity of the similar material is 230-1,260 m/s, and the resistivity of the similar material is 20-340 Ωm. |
