Tunnel structure for weak and broken high-temperature water-bearing stratum

Abstract

The invention provides a tunnel structure for a weak and broken high-temperature water-bearing stratum. The tunnel structure comprises a tunnel lining and an inverted arch which form a closed annular structure, the footing of the tunnel lining is connected with the left end and the right end of the inverted arch, drain holes are formed in the footing, and drainage ditches and cable troughs are formed in the connecting portions of the lining and the inverted arch; a traffic lane in a tunnel is arranged on a vibration reduction layer, a bearing platform plate is arranged on the lower portion of the vibration reduction layer and supported by longitudinal beams and cross beams jointly, the longitudinal beams and the cross beams are supported by pile foundations which vertically penetrate through the inverted arch and are inserted into the stratum, the ends of the two sides of the traffic lane, the ends of the two sides of the vibration reduction layer and the ends of the two sides of the bearing platform plate are all disengaged from the positions where the drainage ditches and the cable troughs are located, and the longitudinal beams, the cross beams and the pile foundations are disengaged from the inverted arch. The tunnel structure has the effects of water resistance, thermal insulation and vibration reduction and is compact in structure, high in bearing performance, convenient to construct, lower in construction and maintenance cost and wide in application range.

Description

technical field [0001] The invention relates to the technical field of traffic tunnels, in particular to a tunnel structure used in weak and broken high-temperature water-bearing formations. Background technique [0002] A tunnel is an underground structure used for passing vehicles, pedestrians, and transporting materials in industries such as railways, highways, urban subways, water conservancy, electric power, and national defense. It is usually built in various rock or soil formations below the surface. Due to the impact of the earth's internal tectonic movements such as volcanoes, magma, groundwater, and earthquakes, the rock mass or soil in the stratum presents different forms. For strata that are strongly affected by the above-mentioned geological tectonic movements, the rock mass or soil therein has poor integrity and low strength, and the rock mass or soil is in a state of weakness, fragmentation, high temperature or high water content. In the stratum with such cond...

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Problems solved by technology

[0006] my country has a vast territory, complex and diverse terrain and landforms. With the construction of a large number of underground projects such as railways, highways, subways and national defense, more and more tunnel projects will pass through weak and broken high-temperature water-bearing strata and high-intensity earthquake areas. Conventional The existing tunnel structure has been difficult to adapt to such complex formations, so it is necessary to find a new type of tunnel structure suitable for weak and broken high-temperature water-bearing formations

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