Water outburst and mud outburst testing device for high pressure-bearing tunnel

Abstract

The invention belongs to the field of testing devices, and relates to a water outburst and mud outburst testing device for a high pressure-bearing tunnel. The a water outburst and mud outburst testing device comprises a model test bench and a pressure stabilizing device, wherein the model test bench is divided into three parts, namely an internal square cabin, an external pressure-bearing outer wall and a tunnel opening; the internal square cabin is arranged in the pressure-bearing outer wall; the tunnel opening is welded in the internal square cabin and the pressure-bearing outer wall; and the pressure stabilizing device is used for providing stable water pressure for the test bench and is composed of a high-pressure nitrogen tank and a gas-liquid compound constant-pressure water tank. The water outburst and mud outburst testing device is capable of simulating water outburst and mud outburst processes under high pressure, and achieving a good and lasting pressure stabilizing effect.

Description

Technical field [0001] The invention belongs to the field of test devices, in particular to a simulated test device for water and mud inrush in high-pressure-bearing tunnels. Background technique [0002] With the rapid development of economic construction, the transportation network, water conservancy and hydropower and other infrastructure are constantly improving, and more and more deep-buried tunnel projects will appear. Deep-buried tunnel projects are threatened by high pressure water and often encounter water inrush. Mud disasters have had a major impact on engineering construction and people's property safety. In order to explore the internal mechanism and catastrophe law of water and mud inrush in tunnels under the action of highly confined water, it is necessary to be equipped with corresponding test equipment. The relevant test equipment in the past can be divided into two categories: one is the water and mud inrush test device for simulating the tunnel excavation...

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Problems solved by technology

Among the published seepage water inrush test device patents, for example, patent 2008100453044 discloses a high-pressure seepage test device for large-scale rock samples, but it is only for rock sample testing; patent CN101308126A discloses a simulation device for excavation water inrush , but its maximum water pressure is only 1MPa, and its pressurization system is difficult to keep stable pressure, which cannot meet the requirements of tunnel water and mud inrush test simulation under the action of high pressure water

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