Zero-defect construction method for secondary lining of tunnel

Abstract

The invention discloses a zero-defect construction method for a secondary lining of a tunnel. The method comprises the following steps: S1, controlling smooth blasting quality; S2, detecting and controlling a primary lining section; S3, performing under-excavation treatment on the primary lining section; S4, hanging a waterproof board; S5, feeding window by window, vibrating layer by layer and grouting plate by plate, wherein no less than two punching holes are punched for concrete grouting of secondary lining and a two-vibration mode is adopted in which an insertion vibrator acts mainly and an adhesion type vibrator acts auxiliary for a side wall part while the adhesion type vibrator acts mainly and the insertion vibrator acts auxiliary for an arch part so as to implement concrete grouting of secondary lining; S6, performing mold grouting 2 hours after the completion of concrete grouting of second lining; S7, after mold grouting is completed, performing pipe maintenance and implementing non-destructive detection of secondary lining concrete at the same time. The invention prevents defects such as insufficient thickness and void in tunnel lining construction, guides the whole process of tunnel quality defect treatment, and ensures zero defect of lining quality.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a zero-defect construction method for secondary lining of tunnels. Background technique [0002] In the tunnel pouring process, it is easy to have defects such as underthickness and voids in the tunnel lining construction. The occurrence of underthickness and voids will have a great impact on the quality of the tunnel, and after the occurrence of underthickness and voids, it must be It needs to be processed to eliminate the adverse effects of under-thickness and emptying on the tunnel. The post-processing work is cumbersome and the workload is heavy, causing great trouble. Contents of the invention [0003] The object of the present invention is to solve the above problems, and to design a zero-defect construction method for secondary lining of tunnels. Prevent defects such as under-thickness and voids in tunnel lining construction, guide the whole...

AI Technical Summary

Problems solved by technology

[0002] In the tunnel pouring process, it is easy to have defects such as underthickness and voids in the tunnel lining construction. The occurrence of underthickness and voids will have a great impact on the quality of the tunnel, and after the occurrence of underthickness and voids, it must be It needs to be processed to eliminate the adverse effects of lack of thickness and void on the tunnel. The post-processing work is more cumbersome and the workload is heavy, causing great trouble