Testing device for simulating drainage seepage state of tunnel

Abstract

The invention relates to a tunnel drainage engineering technology, and aims to provide a testing device for simulating a drainage seepage state of a tunnel. The device comprises a tunnel model tank, a water spraying system, a drainage system and a monitoring system, wherein the tunnel model tank is a cuboid tank with an opening on the top, open holes are symmetrically formed in the lower part of front and rear sidewalls of the tank, and a penetrating through hole formed simulating the shape of the tunnel is formed by an upper curved plate and a lower bottom plate together between the two open holes; an internal space of the tank is filled with a soil body; a drainage pipeline is fixedly arranged on the penetrating through hole, and consists of an inclined drainage pipe, a vertical water collecting pipe and a hose for connecting the inclined drainage pipe and the vertical water collecting pipe. According to the device, changing conditions of a groundwater seepage field in a surrounding rock model of the tunnel under influence of different drainage systems can be directly simulated, seepage rules of groundwater of surrounding rocks of the tunnel under the action of drainage can be obtained through a testing result of the seepage state of the groundwater, and the problems of unclear identification and difficulty in field monitoring of the seepage state of the underground of the tunnel are effectively solved.

Description

technical field [0001] The invention belongs to tunnel drainage engineering technology. In particular, it relates to a test device for simulating the seepage state of tunnel drainage. Background technique [0002] In recent years, my country's highway transportation has developed rapidly, and the number and mileage of highway tunnels have continued to increase. Affected by the complex geological environment and hydrogeological conditions, the construction and operation of the tunnel still faces many engineering problems. Among them, the water leakage disease of the tunnel is a problem that plagues the operation and maintenance of the tunnel. [0003] Setting up drainage facilities inside the tunnel is one of the important means to control the water seepage in the tunnel at present. To study the change law of the seepage field of the groundwater in the surrounding rock area of ​​the tunnel under the action of different drainage measures, reveal the change of the discharge ...

AI Technical Summary

Problems solved by technology

As the tunnel is a concealed project, the drainage facilities of the tunnel are generally buried in the surrounding rock, and it is difficult for engineering and technical personnel to have a clear understanding of the distribution of the seepage field of the surrounding rock of the tunnel with the current technical means.

In addition, although the rain gauge can monitor the change of rainfall intensity in the area near the tunnel in real time, the discharge flow of the tunnel drainage measures can only be estimated by setting up triangular weirs, etc. It is difficult to realize the simultaneous monitoring of rainfall and drainage, so as to obtain the rainfall intensity and Correlation between discharge

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