Intrinsic safety type carbon dioxide gasifying agent and preparation method thereof

Abstract

The invention relates to an intrinsically safe carbon dioxide gasifying agent and a preparation method thereof. The intrinsically safe carbon dioxide gasifying agent is prepared from a solid fuel, a passivator, a catalyst and a curing agent in proportion, and the solid fuel is a mixture of boron powder, beryllium powder, aluminum powder and magnesium powder; the passivator is selected from calcium oxide, silicon dioxide, calcium carbonate or calcium chloride; the catalyst is nano silver or nano nickel; and the curing agent is polyurethane or epoxy resin. The preparation process is carried out in a closed metal container, the mixture is poured into a mold after being uniformly stirred, and is air-dried at normal temperature to form a solid agent column, so that the safety risk under the normal operation environment and transportation condition is eliminated. The intrinsic safety type carbon dioxide gasifying agent is mixed with solid carbon dioxide according to a certain proportion, the solid carbon dioxide can be instantly gasified and expanded by hundreds of times through excitation and combustion of an electric detonator and release of a large amount of heat energy, rocks are broken through huge expansion pressure, and the intrinsic safety type carbon dioxide gasifying agent has the remarkable advantages of intrinsic safety and environmental protection.

Description

technical field [0001] The invention relates to the technical field of high-pressure gas explosion, in particular to an intrinsically safe carbon dioxide gasification agent which is safe to prepare, use and transport and a preparation method thereof. Background technique [0002] my country has a vast territory, but mountainous areas account for 69.1%, and most of the construction projects in mountainous areas involve bedrock excavation. Even in the eastern plains, developed cities such as Shenzhen, Fuzhou, Xiamen, Wenzhou, Qingdao, Dalian, and numerous small and medium-sized cities, the buried depth of bedrock is very shallow, and bedrock excavation is also a common phenomenon. Wherein: dynamite blasting is a traditional method for bedrock excavation, but it is too violent, and the construction around the building (structure) is greatly restricted. First of all, it is difficult to control the safety indicators such as vibration acceleration, settlement deformation, lateral...

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Problems solved by technology

[0005] In order to solve the problem that most of the chemical heating materials used in the instant gasification of carbon dioxide contain active chemical substances such as oxidants and organic acids, which in turn lead to the difficulty and poor safety of gasification agents in terms of preparation, tran

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