Rock and earth mass frost heaving parameter in-situ tester
A tester and technology of rock and soil mass, which are applied in the field of in-situ testing of geotechnical engineering in cold regions, and can solve the problems of inability to accurately simulate the stress state and groundwater conditions on site, damage to the original structure and state of rock and soil mass, and limited test accuracy. , to solve the problem of freezing damage of underground engineering in cold regions, solve the problem of hysteresis, and achieve the effect of short test period
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[0029] The in-situ testing instrument for frost heaving parameters of rock and soil mass in this embodiment is as follows: figure 1 As shown, it includes a pressure control device 1 arranged outside the borehole 5, a liquid nitrogen bottle 2, a temperature control device 3 and a data acquisition device 4, and a test probe 6 arranged in the borehole 5, through a pressure pipeline 7, heat preservation Pipeline 8 and wire 9 connect the two. Among them, the temperature control device 3 provides a cold source for freezing the rock and soil around the borehole, and is connected to the test probe 6 through the insulation pipeline 8; the pressure control device 1 provides the pressure required for the expansion of the elastic airbag, and is connected through the pressure pipeline to test probe 6. The data collection device 4 is used to collect the monitoring data of each sensor, and is connected to each sensor on the test probe 6 through a wire 9 .
[0030] like figure 2 and ima...
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