Manual pipe-jacking construction method for shallow covering large-pipe-diameter high-water-level pipe beneath existing road

Abstract

The invention discloses a manual pipe-jacking construction method for a shallow covering large-pipe-diameter high-water-level pipe beneath an existing road. The manual pipe-jacking construction methodfor the shallow covering large-pipe-diameter high-water-level pipe beneath the existing road comprises the following steps that conducting preparation for construction, determining a dewatering scheme, reasonably arranging a dewatering well, digging a pipe-jacking work well, constructing a back wall, installing pipe-jacking equipment, conducting advanced ductule grouting, conducting digging and jacking construction, conducting post-grouting construction and monitoring ground subsidence. The manual pipe-jacking construction method for the shallow covering large-pipe-diameter high-water-level pipe beneath the existing road has the beneficial effects that the construction site is small, the existing road and underground pipelines are prevented from being damaged, recovery is not needed, resource waste is completely eradicated, construction procedures are reduced, the comprehensive cost is effectively lowered, and the work period is effectively shortened; and meanwhile, manual pipe jacking causes quite little disturbance in a pipeline foundation, and therefore the foundation bearing cavity and stability are guaranteed after pipeline installation.

Description

technical field [0001] The invention relates to an artificial pipe jacking construction method, in particular to an artificial pipe jacking construction method for shallow-covered soil with a large pipe diameter and high water level penetrating existing roads, and belongs to the technical field of road construction. Background technique [0002] With the rapid development of urbanization in my country, more and more new underground pipelines need to pass through existing buildings (structures) and roads. For the traditional large-scale excavation and buried pipeline construction, first, manual excavation is required. layer, and thus cannot satisfy the laying of various large pipelines that cannot be slotted due to the influence of the geological structure of the strata they pass through, the height of the groundwater level, the size of the pipe diameter, and the thickness of the soil on the top of the pipe. Second, the construction site is large and cannot Avoid damage and res...

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Problems solved by technology

[0002] With the rapid development of urbanization in my country, more and more new underground pipelines need to pass through existing buildings (structures) and roads. For the traditional large-scale excavation and buried pipeline construction, first, manual excavation is required. layer, and thus cannot satisfy the laying of various large pipelines that cannot be slotted due to the influence of the geological structure of the strata they pass through, the height of the groundwater level, the size of the pipe diameter, and the thickness of the soil on the top of the pipe. Second, the construction site is large and cannot Avoid damage and restoration of existing roads and underground pipelines, which will lead to waste of resources, increase construction procedures, increase the overall cost and prolong the construction period. Ensure that the bearing capacity and stability of the foundation after the pipeline is installed are poor

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