Radioactive nuclear contaminant diffusion migration moulding material and moulding method

Abstract

The invention provides a radioactive nuclear contaminant diffusion migration moulding material and a moulding method and relates to the moulding material. The moulding material comprises a mixed solution which is formed by dispersion of a liquid ingredient A and a solid ingredient B, wherein the liquid ingredient A comprises, by weight, 35-60 parts of polymer emulsion, 20-35 parts of water, 0.6-1 part of coalescing agent, 0.5 part of defoamer, 0.4 part of dispersant, 2.5 parts of antifreezing agents, 0.6 part of mouldproof bactericide, 0.6 part of rheolobic modifier, 1.2-2.5 parts of multifunctional modifiers and 1-2 parts of chelating agents; the solid ingredient B comprises, by weight, 5-15 parts of water reducing agents, 3-8 parts of rapid drying agents, 1-3 parts of temperature-sensitive aid-volatile agents and 1.5-6 parts of aid-moulding agents. According to the moulding material, the solid ingredient and liquid ingredient are evenly and steadily dispersed in the mixed solution, so that organic con-dissolution of the solid and liquid is achieved, the problem of dispersion stability is solved, the mode that the solid and the liquid are mixed in using is transformed into the mode that the single mixed solution is used, the mixing time on site and stirring processes of an original moulding agent in using are saved, and the labor intensity of operating personnel is reduced.

Description

technical field [0001] The invention relates to a pressing material for controlling, in particular to a pressing material and a pressing method for the diffusion and migration of radioactive nuclear pollutants. Background technique [0002] It is well known that the airborne radioactive plume caused by a nuclear accident disperses, and due to the effects of gravity, dry and wet deposition, a radioactive material settlement area is formed on the ground surface, causing damage to the surface environment and the living environment of humans, animals and plants; from emergency response In terms of consequence control and suppression, the settlement area is divided into two types: open area and densely built area. The subsidence area suitable for large-scale and rapid engineering control operations is called open area, and other areas are generally called densely built areas. . [0003] Open areas include airports, docks, expressways, provincial roads, 1000m 2 For large squares...

AI Technical Summary

Problems solved by technology

[0004] The rapid control and suppression of the diffusion and migration of nuclear pollution dust particles on the ground in open areas usually adopts the method of rapid suppression of radioactive dust particles. Traditionally, the following methods are used: (1) water flushing method; (2) shovel method; (3) Tillage method; the disadvantages of traditional nuclear pollution spread control methods are mainly reflected in the following aspects: (1) the effect of surface migration control cannot meet the emergency response requirements, otherwise the cost will be huge; (2) the original solid nuclear pollutants will be transformed into flow (3) It is easy to cause secondary or secondary pollution; (4) The suppression of nuclear pollution is not complete; (5) The amount of waste is large, and it is difficult to transport and store Or the cost of disposal is high; (6) The operation efficiency is low, the disposal period is long, the personnel are exposed to a large dose, and heavy radiation protection equipment is required; these disadvantages greatly limit the application of these traditional methods in the field of ground emergency control and suppression in open areas; application number It is: 201410060571.0, the name of the invention is: peeling type pressing preparation; and the application number is: 200610018930.5, the name of the invention is: reaction type pressing preparation; although the above two patents applied for earlier have overcome the shortcomings of the traditional pressing method, they have also become The basic method of nuclear pollution emergency response in the field of nuclear accident emergency response, but in the process of use, there are the following problems: (1) The spray is a solid-liquid mixture, which needs to be stirred and mixed evenly before being filled into the operating equipment before implementation Diffusion control and pressing pretreatment operations, long preparation period, high labor intensity, and poor time limit for use in emergency situations; (2) The solid-liquid mixture has poor stability and is easy to agglomerate to block the pipeline, which requires high requirements for the distribution machinery pipeline and nozzles ; (3) The power equipment is severely worn; (4) The film-forming time is greatly affected by the environment, especially in an environment with high humidity and low temperature. The film-forming time is extended indefinitely, and it cannot be formed in rain or cold; The water-based controlled pressing preparation and pressing method contaminated with dust have become the basic demands of those skilled in the art