Subsurface tunnel drainage treatment method
A technology of tunnel drainage and treatment method, applied in drainage, tunnel, tunnel lining and other directions, can solve the problems of consuming man-hours, a large number of templates, and the drainage effect is not easy to achieve the expected effect, so as to facilitate later construction, ensure smoothness, and improve efflux The effect of efficiency
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[0028] Example 1
[0029] Such as figure 1 As shown, this embodiment includes the following steps in sequence:
[0030] a. Set up a number of dewatering wells in the middle of tunnel 3, and perform the first lining 1 construction after the water level in tunnel 3 drops to a safe position;
[0031] b. After the first lining 1 is completed, the silt on its bottom surface is removed, and then a water filter layer 6 is laid on the bottom of the first lining 1;
[0032] c. Multiple drainage pipes 5 extending to the sump of the shaft are laid in the water filter layer 6, and a valve is set at the end of the drainage pipe 5;
[0033] d. Lay a waterproof layer 4 on the upper surface of the water filter layer 6, and pour C25 concrete 2 on the waterproof layer 4.
[0034] The present embodiment abandons the method of setting dewatering wells at the bottom of the side walls on both sides of the tunnel 3. By setting dewatering wells in the middle of the tunnel 3, under the premise of ensuring that ...
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