Water-rich sandy cobble ground heteromorphosis deep shaft structural system and construction method thereof

Abstract

The invention relates to a water-rich sandy cobble ground heteromorphosis deep shaft structural system and a construction method thereof. A conventional rectangular shaft section pattern or a circular shaft section pattern, influenced by established subway lines and surrounding environments, can be limited by site conditions and the surrounding environments, so that an operating space does not exist. The water-rich sandy cobble ground allotypical deep shaft structure comprises a heteromorphosis deep shaft structure, wherein the heteromorphosis deep shaft structure comprises a triangular fracture surface shaft structure, an extended digging section heteromorphosis shaft structure and a quadrilateral fracture shaft structure which are arranged from top to bottom; the horizontal section of the triangular fracture surface shaft structure is triangular, and the horizontal section of the upper part of the triangular fracture surface shaft structure is the same as that of the lower part of the triangular fracture surface shaft structure; the horizontal section of the quadrilateral fracture shaft structure is quadrilateral, and the horizontal section of the upper part of the quadrilateral fracture surface shaft structure is the same as that of the lower part of the quadrilateral fracture surface shaft structure; the triangular fracture surface shaft structure is expanded to form the quadrilateral fracture shaft structure through the transition of the extended digging section allotype shaft structure. The water-rich sandy cobble ground allotypical deep shaft structural system disclosed by the invention has the characteristics of being small in occupied area, large in inner space, flexible to convert and capable of being adapted to various environmental requirements, the requirements for small upper part and large lower part are met, and besides, the surrounding environments can be adapted.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to a structural system of a special-shaped deep shaft in a water-rich sandy pebble formation and a construction method thereof. Background technique [0002] For the current rail transit projects in major cities in China, with the continuous densification of the subway line network, the follow-up subway line construction will be affected by the existing subway lines and the surrounding environment. And the requirements for construction methods and engineering measures are more stringent. Conventional rectangular or circular shaft section types may have no room for construction due to site conditions and surrounding environment restrictions. [0003] The construction method combining the special-shaped deep shaft and the mining method tunnel has the characteristics of flexibility, adaptability, safety and reliability. The cross-sectional structure type with s...

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Problems solved by technology

Conventional rectangular or circular shaft section types may be restricted by si

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