Rapid detection device for multiple parameters of shallow surface frozen soil and detection method of rapid detection device

Abstract

The invention relates to a rapid detection device for multiple parameters of shallow surface frozen soil. The rapid detection device comprises a balance frame, a pair of pressurization rods and a displacement scaleplate. A horizontal ruler is arranged on the displacement scaleplate. An instrument packaging housing internally provided with a temperature measurement instrument, a resistance measurement instrument and a force measurement instrument is arranged at the top ends of the pair of pressurization rods. Rigid insulating force-bearing plates used for clamping a force sensor are arranged atthe bottom of the pair of pressurization rods. A pair of rigid insulating pressurization rods is symmetrically arranged at the bottom of the rigid insulating force-bearing plates. Two metal sheets are arranged at the tail ends of the pair of rigid insulating pressurization rods, wherein a temperature sensor is inlaid in one metal sheet, the metal sheets are connected with the resistance measurement instrument, the temperature sensor is connected with the temperature measurement instrument, and the force sensor is connected with the force measurement instrument. The invention further disclosesa detection method of the rapid detection device. According to the rapid detection device and the detection method of the rapid detection device, the resistance, temperature and strength of differentlayers of a shallow surface soil body can be measured at the same time, the freezing condition of the soil body can be accurately detected, and the freezing depth of the earth surface can also be detected.

Description

technical field [0001] The invention relates to the field of frozen soil detection, in particular to a multi-parameter rapid detection device and detection method for shallow surface frozen soil. Background technique [0002] Frozen soil refers to rock and soil whose temperature is equal to or lower than 0°C and contains ice. In my country, permafrost is widely distributed, among which the permafrost area accounts for about 22% of my country's land area. Most of the areas north of the Yangtze River are seasonally frozen soil areas, and almost all areas except Hainan are short-term frozen soil areas. Area. Such widely distributed permafrost areas lead to a large number of engineering construction and agricultural activities in our country inevitably encounter permafrost. Especially with the continuous advancement of my country's western development strategy, the number of hydropower development projects in Southwest my country has increased significantly. Although concrete d...

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Problems solved by technology

[0004] Although the method of soil sampling detection has a high accuracy in detecting the freezing condition, this method has the following disadvantages: first, the strength of the soil after the surface is frozen is high, and sampling is difficult, and it is difficult to complete the acquisition of standard samples; secondly, the ground surface The freezing conditions of the soil at different depths are different after freezing, and the different detection positions during the soil sampling test have a great influence on the test results, which may cause engineers to misjudge the freezing condition of the ground surface; in addition, the on-site sampling test is destructive Detection, the compactness of the soil cannot be restored after the detection is completed

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