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A tunnel construction method

A technology for tunnel construction and tunneling, which is applied in the direction of tunnels, tunnel linings, earthwork drilling and mining, etc. It can solve problems such as disturbance, settlement of overlying strata, and influence on the safe service life of the tunnel above, and achieve high and strong stability

Active Publication Date: 2022-04-15
魏强
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Problems solved by technology

With the rapid development of my country's economy, in order to adapt to the development of modern cities, more and more tunnels will appear. Deep, so there will be the situation that the tunnel passes through the existing tunnel, but the settlement of the overlying strata and even greater disturbance will inevitably be caused during the excavation of the tunnel, which will affect the safety and service life of the above tunnel, so there is an urgent need for a guarantee A construction method in which the upper tunnel is not disturbed by the excavation of the lower tunnel and can be safely used for a long time and passes through the existing tunnel

Method used

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Embodiment Construction

[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0039] Such as Figure 1-3, a tunnel construction method, wherein the tunnel 2 vertically passes through the existing tunnel 1 above it, and before the tunnel 2 passes through the existing tunnel 1, that is, before the construction of the tunnel 2 affects the existing tunnel 1, the following steps are included: Construction steps: S1.1, both sides of tunnel 2 are also on both sides of existing tunnel 1 ( figure 1 In the top view, four vertical wells 3 are constructed in the four quadrants of the Cartesian coordinate system formed by tunnel 2 and existing tunnel 1. The front and rear positions of vertical wells 3 must ensure that the existing tunnel 1 is not affected during construction, and each vertical well 3 The distance from the tunnel 2 is the same, and the distance from the existing tunnel 1 is also the same, and the depth of the vertical well 3 is gre...

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Abstract

A kind of tunnel construction method, aiming at the tunnel construction under the condition of passing through the existing tunnel vertically, constructing a circular arched steel-concrete structure above the tunnel to isolate the two tunnels, avoiding the mutual influence of the two tunnels (the construction of the lower tunnel disturbs the upper part, and the upper part The dynamic load of the opening of the tunnel will disturb the construction / operation of the lower tunnel). The space for constructing various types of grouted steel pipes is through vertical shafts, front and rear alleys, and left and right alleys. On the one hand, the above-mentioned construction does not disturb the existing tunnel, and the construction of the circular arch steel-concrete structure does not interfere with the excavation of the tunnel (it can be synchronously), without affecting the excavation period of the tunnel; on the other hand, concrete can be poured into vertical wells, front and rear alleys, and left and right alleys in the later stage to form a support structure like a round arch steel-concrete structure, and all grouted steel pipes are connected With an integrated structure, even if individual grouted steel pipes become loose, it will not affect the tunnel as a whole.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a construction method for a tunnel passing through an existing tunnel. Background technique [0002] A tunnel is an engineering building buried in the ground, and it is a form of human use of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mine tunnels, etc. With the rapid development of my country's economy, in order to adapt to the development of modern cities, more and more tunnels will appear. Deep, so there will be the situation that the tunnel passes through the existing tunnel, but the settlement of the overlying strata and even greater disturbance will inevitably be caused during the excavation of the tunnel, which will affect the safety and service life of the above tunnel, so there is an urgent need for a guarantee A construction method in which the upper tunnel is not disturbed by the excavation of the lower tunne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D11/14E21D11/10E21D11/15E21D11/18
CPCE21D9/00E21D9/001E21D11/14E21D11/10E21D11/155E21D11/18
Inventor 张刚
Owner 魏强
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