Method for rebuilding diversion tunnel body into flood discharging tunnel body
A technology of diversion tunnels and flood discharge tunnels, applied in construction, water conservancy projects, sea area projects, etc., can solve problems such as difficult to do, large concrete demolition range, small concrete demolition range, etc., to achieve the effect of reducing the heat of hydration
Active Publication Date: 2015-06-10
YELLOW RIVER ENG CONSULTING
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Problems solved by technology
[0003] At present, the commonly used reconstruction method for the existing tunnel body is to remove the poured concrete first, then expand the tunnel body according to the needs, and then pour new concrete. Reconstruction of a tunnel with a single function
For the reconstruction of the diversion tunnel body where the entrance building of the diversion tunnel has been built, the poured concrete of the tunnel body is difficult to remove, the concrete demolition range is large, and the requirements of both diversion and flood discharge must be met, the above-mentioned commonly used reconstruction methods are very difficult. Difficult to do
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[0023] The method for rebuilding the diversion tunnel body of the present invention into a flood discharge tunnel body comprises the following steps:
[0024] The first step: if figure 1 , 2 As shown, the section of the original diversion tunnel 1 is expanded to the designed expanded section of the flood discharge tunnel;
[0025] The second step: if image 3 , 4 As shown, the vertical reinforcement 2 of the tunnel side wall is installed, and the anchoring agent anchor rod 4 and the pre-embedded steel plate 5 are installed within a certain range at the junction of the precast tunnel side wall 9 and the original diversion tunnel poured side wall 10; The anchor rod 4 extends horizontally outward from the position of the vertical steel bar 2 inside the side wall of the tunnel. The anchor rod 4 is located at the vertical steel bar 2 inside the side wall of the tunnel. Weld to steel bar 2;
[0026] Step 3: If Figure 4 As shown, pour the tunnel side wall 9 and the tunnel roof...
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The invention discloses a method for rebuilding a diversion tunnel body into a flood discharging tunnel body. The method comprises the steps of 1, excavating the section of the original diversion tunnel body to the designed expanding excavation section of the flood discharging tunnel in an expanding mode; 2, mounting vertical reinforcing steel bars at tunnel edge walls; 3 pouring tunnel edge wall and tunnel top arch concrete according to construction demands; and 4, after the diversion is finished, pouring bottom plate concrete on an original diversion tunnel bottom plate, wherein the bottom plate concrete is poured in two layers from bottom to top, the pouring elevation of the lower concrete is higher than that of embedded steel plates; after the pouring of the lower layer concrete is finished, the upper layer concrete is poured after the reinforcing steel bars needed to be mounted in the upper layer concrete are welded with the embedded steel plates; the top face elevation of the upper layer concrete is the bottom plate elevation of the flood discharging tunnel after rebuilding; the strength level of the lower layer concrete is lower than that of the upper layer concrete. The method for rebuilding the diversion tunnel body into the flood discharging tunnel body has the main advantages of omitting the demolishing of poured reinforcing steel bar concrete in the built diversion tunnel, and ensuring the function demands on the tunnel in different periods.
Description
technical field [0001] The invention relates to the rebuilding of a hydraulic tunnel body in different construction periods, in particular to a method for rebuilding a diversion tunnel body into a flood discharge tunnel body. Background technique [0002] The diversion tunnel is a temporary building. In order to create conditions for dry land construction of the project, the water from the upper reaches of the river during the construction period is discharged through the diversion tunnel. Sexual buildings - flood tunnels. At present, when the diversion tunnel is converted into a flood discharge tunnel, another entrance is usually set above the diversion tunnel. The joint section of the diversion tunnel and the flood discharge tunnel is arranged in the form of a dragon with its head raised, and the rest of the section is a common tunnel body. [0003] At present, the commonly used reconstruction method for the existing tunnel body is to remove the poured concrete first, the...
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IPC IPC(8): E02B8/06
Inventor 赵宁仝亮朱天平
Owner YELLOW RIVER ENG CONSULTING