Grouting-to-stop-water construction method of underwater rubble bed

A construction method and technology of riprap foundation bed, applied in the direction of infrastructure engineering, construction, etc., can solve the problems of insignificant economic and social benefits, prolonged construction period, complicated construction process, etc., and achieve obvious economic and social benefits, Speed ​​up construction progress and reduce the effect of construction links

Inactive Publication Date: 2014-11-19
HANGZHOU HUANENG SAFETY ENG POLYTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional concrete construction method and the conduit method underwater concrete construction require a mixer to mix aggregates, the construction process is more complicated, the construction period is prolonged, and the economic and social benefits are not obvious

Method used

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  • Grouting-to-stop-water construction method of underwater rubble bed
  • Grouting-to-stop-water construction method of underwater rubble bed
  • Grouting-to-stop-water construction method of underwater rubble bed

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Embodiment Construction

[0036] The present invention adopts the vibrating slurry forming method, the coarse aggregate is directly sunk into the mold by vibrating, and the cement mortar rises relatively to form concrete. , directly affects the smooth progress of subsequent construction projects. The overall strength and function of the raised concrete are gradually formed in water over time, and the entire construction method and operation process are completely in a wet construction state.

[0037] This construction method requires the following materials:

[0038] 1. Cement (the grade is not lower than 32.5, ordinary portland cement), sand (the sand used for pulping is medium-fine sand, the particle size is not more than 2.5mm, and the fineness modulus is 1.6-2.0), water, Additives (water reducer and expansion agent).

[0039] 2. Machinery and equipment: concrete mixing station, mortar pump, slurry storage tank, drilling rig, deep well pump, submersible pump, loader, mixer.

[0040] The inventive ...

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Abstract

The invention discloses a grouting-to-stop-water construction method of an underwater rubble bed. The method includes the steps of (1) construction preparation, (2) base slot excavation, (3) points warehouse seam arrangement, (4) geotextile arrangement, (5) construction platform installation and trestle setting up, (6) bed dump-filling, (7) grouting pipe embedding, (8) pore-forming, (9) grout preparation, (10) grouting and (11) layer-by-layer inspection and acceptance. The method has the advantages that a vibratory grouting formation method is adopted for construction, rubble is not required for concrete mixing, water in coarse aggregate gaps can be completely replaced with mortar during underwater construction, a mixer is not needed for mixing aggregate, construction is facilitated, construction progress is quickened beneficially, the pumping technology is improved as compared with that of normal concrete, construction links are decreased, and economic benefit and social benefit are obvious.

Description

technical field [0001] The invention relates to a construction method for raising slurry and stopping water of an underwater riprap foundation bed. Background technique [0002] The construction of cofferdams and foundation pits is an important part of the construction of wharfs, breakwaters and other hydraulic structures. The cost of construction of cofferdams generally accounts for 15% to 20% of the total investment. The technical difficulty is high, the risk is high, and the construction period is long. The success or failure of the project, its design and construction has always been a hot spot that industry peers attach great importance to. [0003] In recent years, in the construction of water structures in the rock base area, it is generally preferred to use prefabricated reinforced concrete caissons as the main structure of the cofferdam. Water-stop construction technologies such as underwater grout raising technology and underwater high-pressure rotary spraying hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/06E02D19/04
Inventor 姜骏骏李胜勇刘学应
Owner HANGZHOU HUANENG SAFETY ENG POLYTRON TECH CO LTD
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