Visual grouting test system with controllable viscosity and solidification characteristics

Abstract

The invention discloses a visual grouting test system with controllable viscosity and solidification characteristics. The test system comprises a grouting test system, a visual observation system, a temperature control pressurization system, a heat insulation system and a collection system. The test system can control the solidification state of the grouting slurry by adjusting the slurry temperature through the temperature control pressurization system according to the actual situation, and meanwhile, the visual model of the grouting system is used for monitoring the specific solidification condition of the slurry along with the temperature change after the slurry is injected into the rock fracture. The solidification process of the slurry injected into the simulated rock fracture along with the change of the temperature can be directly observed through the test in combination with a visualization technology. The test system is simple in structure, convenient to operate and easy to observe and control, and has important practical significance for improving the impermeability of rock fracture grouting in engineering practice, improving the integrity of rock soil and the integrity of a structure and improving the bearing capacity and the sealing performance of a rock mass.

Description

technical field [0001] The invention relates to the technical field of grouting performance testing in rock mass engineering, in particular to a grouting visualization test system with controllable viscosity and solidification characteristics. Background technique [0002] In recent years, with the increasing number of underground engineering development and construction projects, how to deal with the hazards of high-pressure groundwater during construction has become one of the key engineering technical issues. It is an engineering measure widely used at present to reinforce the fractured rock mass by means of grouting to seal off the harm of groundwater. Under the complex conditions of high underground pressure, high water pressure, and temperature changes, the solidification characteristics of the slurry are disturbed and it is difficult to control accurately. Especially in the high-pressure groundwater grouting treatment, if the grout is not fully solidified, the grout ...

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Problems solved by technology

[0004] Publication No. CN 1970900A of the Chinese patent "Mixed Grouting Device for Plugging High-Pressure Groundwater and Its Mixed Grouting Process" proposes a method of controlling the solidification time of the slurry by using the mixing technology outside the pores of cement slurry and water glass. It can improve the problem of slurry being washed away by high-pressure underground water, but its diffusion and sealing mechanism in fractured rock mass has not been effectively verified

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