Permeability coefficient and temperature real-time monitoring device and monitoring method in sand solidification process

Abstract

The invention provides a permeability coefficient and temperature real-time monitoring device and monitoring method in a sand solidification process. The device comprises a data acquisition and control system, a pressure controller, a liquid pressure transfer device, a solution mixing device, a temperature monitoring device, a water pressure monitoring device, a specimen forming device, and a liquid collection container. The data acquisition and control system is respectively connected to the pressure controller, the temperature monitoring device and the water pressure monitoring device. The pressure controller is connected to the specimen forming device through the liquid pressure transfer device. The specimen forming device is connected to the liquid collection container. The device can monitor a permeability coefficient and a temperature change curve in the process of injecting a water glass solution and a calcium chloride solution into a sand specimen in real time, the problem that the time-varying permeability coefficient is difficult to obtain in a curing solution injection process is solved, and the real-time determination problem of the specimen temperature change in the curing solution injection process is solved at the same time.

Description

technical field [0001] The invention belongs to the field of sandy soil solidified by water glass and calcium chloride solution in geotechnical engineering, and in particular relates to a real-time monitoring device and method for monitoring permeability coefficient and temperature during the solidification process of sandy soil. Background technique [0002] Mixing water glass solution and calcium chloride solution can produce calcium silicate precipitation, which can fill the pores between sand particles and cement the sand particles, and then solidify the sand foundation. Calcium silicate filling the pores in the sand is a gradual process, in which the porosity and permeability of the sand gradually decrease. In the past, after the water glass solution and calcium chloride solution were injected into the sand sample, the solidified sand sample was taken to test the permeability coefficient, which ignored the gradual change process of the permeability coefficient of the sa...

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Problems solved by technology

[0003] In order to solve the problem that the above-mentioned prior art cannot monitor the water glass solution and the calcium chloride solution in the process of injecting the water glass solution and the calcium chloride solution into the sand sample process, the permeability coefficient and the temperature change with time, the present invention provides the permeability coefficient and temperature in the sand solidification process. Temperature real-time monitoring device and monitoring method

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