Mining-method tunnel bottom structure adapting to rapid construction passageway and construction method of mining-method tunnel bottom structure

Abstract

The invention discloses a mining-method tunnel bottom structure adapting to a rapid construction passageway. An inverted arch structure is arranged in the circumference of the bottom of a tunnel contour, upper-part lining is arranged inside the circumference of the upper portion of the tunnel contour, and a frame structure is arranged on the upper surface of the inverted arch structure; and the bottom of the side wall of the frame structure is connected with the upper surface of the inverted arch structure to jointly form a lower layer space, and other interior structures, the top of the frame structure and the upper-part circumference of the tunnel contour jointly form an upper layer space, so that a space structure which at least comprises one lower layer space and one upper layer space is formed. The invention further discloses a construction method of the mining-method tunnel bottom structure adapting to the rapid construction passageway. According to the mining-method tunnel bottom structure adapting to the rapid construction passageway, through mutual cooperation of the prefabricate inverted arch structure and the prefabricate frame structure, a construction passageway of vehicles and mechanical equipment is formed rapidly, and the mining-method tunnel bottom structure can be applied to the situation that go-through of the vehicles and the mechanical equipment is rapidly recovered after inverted arch construction is conducted.

Description

technical field [0001] The invention belongs to the technical field of mining tunnel engineering, and in particular relates to a bottom structure of a mining tunnel adapting to fast construction passages and a construction method thereof. Background technique [0002] According to the previous experience and theory of tunnel engineering, in order to ensure the safety and stability of the structure, mining method tunnels generally need to install inverted arches at the bottom of the tunnel, and floor plates can only be used in areas with good surrounding rock integrity. The lining structure is combined to form a lining ring, which together constitute a closed permanent load-bearing structure. Inverted arches and upper lining structures are generally cast-in-place structures. At the same time, since the inverted arch must have a certain radian, its structural height is deep in the middle and shallow on both sides. In order to facilitate the laying of tracks or roads, the spac...

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Problems solved by technology

[0004] (1) If both the inverted arch and the internal structure are cast-in-situ structures, formwork pouring needs to be erected, and the formwork pouring internal structure must be erected after the inverted arch has hardened to a certain strength, and the process takes a long time

[0005] (2) If the bottom invert is cast-in-place and the internal structure uses prefabricated components, the construction accuracy of the bottom invert is difficult to guarantee, which will make it difficult to assemble the prefabricated internal structure smoothly and continuously, which will easily cause additional stress on the structure and reduce the safety and security of the structure. Durability

[0006] (3) After a period of maintenance, the cast-in-place structure must reach a certain level of strength to meet the needs of vehicles and mechanical equipment construction, and it is impossible to quickly form construction passages, which will affect other processes such as tunnel excavation

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