Vertical shaft construction method under environment sensitive area or space limited condition

Abstract

The invention provides a vertical shaft construction method in an environment sensitive area or under a limited space condition, which comprises the following steps of: excavating a first section of an inclined shaft to a first depth according to a wellhead position of the inclined shaft, excavating a maintenance and construction auxiliary channel in a horizontal direction, and excavating an upper area of a vertical shaft operation area; a second section of inclined shaft is continuously excavated obliquely downwards from the bottom of the first section of inclined shaft, and the adit, the lower area of the vertical shaft operation area and the transverse hole operation area are excavated in sequence in the horizontal direction; a rope winding inclined hole is drilled obliquely and downwards from the side wall of the upper area of the vertical shaft operation area to the transverse hole operation area; a temporary slag sliding hole is drilled downwards from the bottom of the upper area of the vertical shaft operation area to the lower area of the vertical shaft operation area; excavating downwards from the upper area of the vertical shaft operation area to the lower area; the vertical shaft operation area is excavated in a vertical dumbbell shape; and a vertical shaft section is excavated downwards from the lower area of the vertical shaft operation area and communicated with the underground tunnel. The method can solve the problem that under the environment sensitive area and the space limited condition, construction of vertical shaft communication ground and underground tunnel is difficult.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a shaft construction method in an environmentally sensitive area or under the condition of limited space. Background technique [0002] For super-long mountain tunnels in related industries such as highways and railways, during the construction process, it may be necessary to set up construction auxiliary channels due to the increase of the working surface, or set up ventilation and smoke exhaust channels for ventilation and smoke exhaust during the subsequent operation of the tunnel. Type passages are generally excavated shafts above the tunnels to connect the ground with underground highways and railway tunnels to form passages. In the process of excavating the shaft, when the site construction of the wellhead is carried out, it is easy to cause large-scale environmental damage around the wellhead surface. There are also access roads that need to be constructed for ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention proposes a method for constructing shafts in environmentally sensitive areas or under limited space conditions, so as to solve the problem existing in the prior art in building shafts connected to the ground in environmentally sensitive areas and limited space conditions. Difficult technical problems with underground tunnel construction

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