A long-distance large-diameter concrete pipe manual jacking process in complex strata

Abstract

The invention relates to the technical field of pipeline project construction, in particular to a manual jacking technology of a long-distance heavy-caliber concrete pipe for complex stratums. The manual jacking technology of the long-distance heavy-caliber concrete pipe for the complex stratums comprises the following steps of (1) construction preparation, (2) pipeline axis measurement and location, (3) pipe jacking work well construction, (4) guiding rail mounting, (5) tool pipe cap mounting, (6) mounting and debugging of pipe jacking equipment, (7) pipeline jacking construction, (8) inspection well construction, and (9) trench backfilling and pavement recovering. The manual jacking technology of the long-distance heavy-caliber concrete pipe for the complex stratums is applied to the manual jacking construction of the long-distance heavy-caliber concrete pipe in the complex stratums, the damage degree of pavements can be reduced, the construction process is simple, the construction cost is low, the construction period is short, lubrication and drag reduction are conducted on the pipeline, construction accuracy is high, the pushing force of pipeline jacking is small, the jacking distance is long, the progress of works is greatly improved, and working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of pipeline engineering construction, in particular to an artificial jacking process for long-distance large-diameter concrete pipes in complex formations. Background technique [0002] With the sustained and steady growth of our country's economy and the further acceleration of the urbanization process, the demand for underground pipelines in our country is also increasing year by year. With the enhancement of people's awareness of environmental protection, pipe jacking technology will play an increasingly important position and role in the construction of underground pipelines in our country. The development of trenchless technology is bound to develop in the direction of scale, standardization and internationalization. The pipe jacking method is a construction method that uses trenchless technology to lay pipelines under the ground. The domestic pipe jacking method is more and more widely used, and the a...

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned patent replaces the concrete pipe with a straight-top steel pipe, which saves space and material costs, the grouting pipe is arranged on the outer wall of the straight-top steel pipe, which avoids the corrosion of the anti-corrosion layer caused by opening holes on the pipe wall of the straight-top steel pipe. The problem of grouting hole blockage and the grouting direction directly hitting the earth, resulting in low grouting effect, but no sand consolidation agent is used in the jacking process, there may be landslides, and the guide rails are not adopted. Fixing measures, the guide rail may be offset during the jacking process, which will affect the guiding accuracy of the guide rail and increase the deviation of the pipeline

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