Static cracking agent expansion force testing device and method

Abstract

The invention provides a static cracking agent expansion force testing device and belongs to the technical field of rock engineering. The static cracking agent expansion force testing device comprisesa testing device body internally provided with a reaction cavity, a water injection pipe and a rubber sleeve, wherein the reaction cavity is formed in a temperature control system, the water inlet end of the water injection pipe is arranged outside the reaction cavity, the water outlet end of the water injection pipe extends into the reaction cavity, the end portion of the water outlet end is provided with a baffle for plugging an outlet of the water injection pipe, the side wall of the portion, extending into the reaction cavity, of the water injection pipe is provided with a water injectionhole enabling the inner cavity of the water injection pipe to be communicated with the reaction cavity, the rubber sleeve sleeves the side wall, provided with the water injection hole, of the water injection pipe and is used for plugging an outlet of the water injection hole. The invention also provides a static cracking agent expansion force testing method. By adopting the static cracking agentexpansion force testing device and the static cracking agent expansion force testing method, the technical problems are solved that at present, an expansion force testing device cannot measure the change of an expansion force of a static cracking agent during water injection and cannot achieve temperature control.

Description

technical field [0001] The invention belongs to the technical field of rock engineering, and more specifically relates to a static breaking agent expansion force test device and a test method. Background technique [0002] Expansion force is the force generated when the static breaking agent is mixed with water and admixtures and then undergoes hydration reaction. In the process of urban tunnels, old city reconstruction, underground engineering and rock mass excavation, ordinary blasting will generate relatively large noise, and some blasting sites are adjacent to important structures or structures, so blasting cannot be carried out, and static breaking agents are used for blasting. Static blasting has more advantages. In the static crushing construction of rock mass, the expansion force of the breaking agent has an important influence on the static crushing design parameters of the rock mass, so it is very important to test the expansion force of the static breaking agent....

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a static breaker expansion force testing device and testing method, aiming to solve the technical problem that the current expansion force test device cannot measure the change of the static breaker expansion force when water is injected

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