Tunnel water-rich and dry water alternate gushing test device and method based on degradation characteristics

Abstract

The invention discloses a tunnel water-rich and dry water alternate gushing test device and method based on degradation characteristics. The tunnel water-rich and dry water alternate gushing test device comprises a test bed frame, a plurality of bearing reinforcing plates are fixedly connected to the lower surface of the test bed frame, the test bed frame is filled with a simulated surrounding rock structure, and water storage structure, a pressure box and an osmometer are pre-buried in the simulated surrounding rock structure. The water storage structure is arranged, high-pressure nitrogen isused for providing pressure, so that water in the water storage tank is driven, and stable water pressure is provided for the water storage structure of the test system; and meanwhile, gas has rapidexpansibility under the compression action, when the tunnel water bursts, the gas can rapidly expand, so that continuous water pressure is provided, instantaneous pressure relief of water pressure caused by sudden large-flow water outburst of common water pumps and other devices is effectively avoided, implementation recording of mechanical parameters such as tunnel rich water and dry water alternate water gushing action is achieved, and it can be guaranteed that geological tests and engineering design are accurate.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a device and method for alternating rich water and dry water inrush tests in tunnels based on deterioration characteristics. Background technique [0002] With the vigorous development of my country's economic construction, the requirements for infrastructure, especially the construction of transportation facilities, are also constantly improving. In the construction of infrastructure such as highways and railways, tunnels have the characteristics of shortening line mileage and improving traffic operation conditions, and are widely used. In the past ten years, the focus of my country's major engineering construction has shifted from areas with good topographic and geological conditions to western mountainous and karst areas with extremely complex topographic and geological conditions. A large number of high-risk deep and long tunnel projects are being or will be ...

AI Technical Summary

Problems solved by technology

Tunnel water inrush is usually characterized by suddenness, high flow rate, high pressure, and strong destructiveness. Because of its sudden occurrence, the scale and dynamic characteristics are difficult to predict, and it is easy to cause large-scale instability of surrounding rock, block tunnels, and bury equipment. Lead to the scrapping of the tunnel or personal injury accidents, causing serious losses to the engineering construction, affecting the long-term operation of the tunnel and the ecological environment of the surface

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