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Calcium sand foundation carbon dioxide strengthening technology

A carbon dioxide, foundation reinforcement technology, applied in infrastructure engineering, soil protection, construction, etc., can solve the problems of high transportation cost and inconvenient material acquisition.

Inactive Publication Date: 2018-04-13
CHINA UNIV OF MINING & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, during the development of islands and reefs, it is inconvenient to obtain materials and the transportation cost is high. Therefore, it is urgent to develop a ground-based processing technology that can obtain materials locally and utilize waste.

Method used

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  • Calcium sand foundation carbon dioxide strengthening technology

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Embodiment Construction

[0012] The embodiment of the method for reinforcing carbon dioxide acidified calcareous sand foundation of the present invention will be further described below with reference to the accompanying drawings:

[0013] figure 1 It is a schematic diagram of a method for strengthening carbon dioxide acidified calcareous sand foundation. The method for implementing foundation reinforcement using the technology of the present invention is as follows:

[0014] a) Capture the carbon dioxide emitted by the carbon dioxide emission source (1). Fill the water and calcareous sand into the high-pressure vessel (2), and pass the carbon dioxide captured by the carbon dioxide emission source (1) to react the carbon dioxide, water, and calcareous sand to generate a calcium bicarbonate solution;

[0015] b) Arrange the injection well (3) and the discharge well (4) in the area to be reinforced (7), and inject the calcium bicarbonate solution into the area to be reinforced (7) through the injection well (...

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Abstract

The invention discloses a carbon dioxide circulation calcium sand foundation strengthening method. The method mainly comprises the steps of calcium bicarbonate preparing through calcium sand acidification, calcium bicarbonate well drilling injection, water recycling and cyclic utilization and the like. According to the method, for the characteristic that the bearing performance of the calcium sandfoundation met in the island development process is low, in combination with the problems that in the island development process, material taking is not convenient, and the transportation cost is high, the island resource and waste resources are sufficiently utilized, and the foundation machining method in which materials are locally taken and waste is utilized is achieved. According to the method, construction of the calcium sand type foundation islands can be better promoted, and good application prospects are achieved.

Description

Technical field [0001] The invention relates to a foundation treatment technology for civil engineering, in particular to the technical field of chemical reinforcement and restoration of a calcareous sand foundation. Background technique [0002] During the development and construction of islands and reefs, the problem of low bearing capacity of calcareous sand foundations is often encountered. Calcareous sand is a kind of soil with carbonate minerals (mainly calcium carbonate) as the main component. It generally contains more than 50% calcium carbonate. It is usually deposited in situ by the skeleton remains of marine organisms (corals, shells, seaweeds, etc.) Or it is deposited from near-source transportation. From an engineering point of view, calcareous sand has the characteristics of porous structure, low strength, and easy breakage. Studies have shown that particle crushing is the main reason for the decrease in strength and low pile side friction. During the construction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12
Inventor 朱前林左殿军王闯范智涵
Owner CHINA UNIV OF MINING & TECH
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