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Construction technology of open cut station in marine water-rich karst stratum

A construction technique and water-rich technology, applied in water conservancy projects, excavation, artificial islands, etc., can solve problems such as large water volume, uneven anisotropy, etc., achieve strong maintenance functions, improve waterproof performance, and good water-stop performance

Active Publication Date: 2021-12-17
THE 5TH ENG CO LTD OF CHINA RAILWAY 25TH BUREAU GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water permeability of fissure karst caves is quite different due to factors such as stratum lithology, degree of weathering, and degree of fissure development, showing inhomogeneity and anisotropy. Due to the development of local fissures, the amount of water in some areas is relatively large

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0105] Embodiment: A construction technique of open-cut station in marine water-rich karst stratum, including the following steps: 1. Traffic relief, including on-site preparation work, measurement and setting out, undisturbed road surface removal, soft foundation treatment, pre-embedded pipelines, etc., road base Construction, road surface construction, road ancillary facilities, road maintenance, open traffic.

[0106] 2. Relocation construction of water supply and drainage pipelines, including: construction preparation, positioning and setting out, excavation of pipe trenches (pier foundations), construction of pipe foundations (pier piers), lowering and stabilizing pipes (hoisting of pipe joints), pipe connection ( Interface or welding), masonry auxiliary structures, closed water test and acceptance, acceptance, earthwork backfill.

[0107] 3. Relocation construction of medium and low pressure gas pipelines, including: preparation work, construction measurement and setting...

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PUM

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Abstract

The invention discloses a construction technique for an open-cut station in a marine water-rich karst stratum, which belongs to the field of subway construction. The key points of the technical scheme are traffic relief, water supply and drainage pipeline relocation construction, medium and low pressure gas pipeline relocation construction, and greening relocation engineering construction , construction of sporadic demolition and restoration projects, special construction of stations, construction of shield sections, arrangement of monitoring points, and inspection of shield tunneling, to meet the requirements for waterproof and drainage during the construction of subways in marine water-rich karst strata, and to be used in subway construction.

Description

technical field [0001] The invention relates to the field of subway engineering, more specifically, it relates to a construction technique of an open-cut station in a marine water-rich karst stratum. Background technique [0002] The marine water-rich karst formations are mainly middle platform and alluvial plain landforms. The overall topography tends to be low at both ends and high in the middle, and the local topography has ups and downs. The Quaternary strata are mainly formed by slope residues, and the underlying bedrock is mainly carboniferous. It is the limestone of Shidengzi Formation and the sandstone of Carboniferous Shishui Formation. The Quaternary soil layer in the area where human construction once existed is divided into Holocene artificial fill, Holocene alluvial-diluvial layer, and Upper Pleistocene alluvial-diluvial layer. ; The bedrocks along the line are Carboniferous shale, sandstone, limestone and so on. The hydrogeological conditions of this terrain a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/045E02D19/10E02D19/08E02D31/02E02D17/04
CPCE02D29/04E02D19/10E02D19/08E02D31/02E02D17/04
Inventor 姜智彬刘玉国朱连臣王有旗辛柱桥柴德华陈新水
Owner THE 5TH ENG CO LTD OF CHINA RAILWAY 25TH BUREAU GRP