Continuous automatic monitoring device for earth surface deformation in frozen soil area

Abstract

The invention discloses a continuous automatic monitoring device for earth surface deformation in a frozen soil region, which is applied to the geography and surveying and mapping field. The device comprises the following steps that a deep drill hole in the frozen soil region is selected as a reference point, and the height change of the surrounding earth surface relative to the reference point is measured by using a high-precision linear displacement sensor to obtain natural earth surface deformation; the deformation sensor reflects the displacement amount through an electric signal so that deformation observation can reach higher precision, and an error is as low as 0.01 mm level; the sensor has the characteristics of firmness, durability and high environment adaptability so that long-term monitoring tasks can be well carried out in regions with severe and complicated environments such as frozen soil regions; and data transmission and acquisition communication with the sensor are completed based on the Internet of Things. According to the device, problems of poor deformation monitoring precision, low time resolution and high cost in a frozen soil region in the prior art are solved, and high-precision and high-time-sequence continuous monitoring of surface deformation and automatic data transmission and acquisition are realized.

Description

technical field [0001] The invention relates to monitoring of surface deformation variables, and belongs to the technical fields of surveying and mapping and geographic information, in particular to a continuous automatic monitoring device for surface deformation in frozen soil regions. Background technique [0002] The surface of the permafrost region has a surface deformation phenomenon marked by "frost heaving and thawing". That is, when the water is frozen to the ice in winter, although the compressibility becomes smaller and the strength is higher, the volume will expand and form a ground surface. Uplift and foundation bulging; in summer, the skeleton support function of ice debris in rock and soil disappears during the process of ice to water, the volume shrinks, the compressibility increases, and rock and soil sink and sink; in addition, there is generally underground ice in the upper limit of permafrost Under the influence of current climate change, the melting of un...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a device that can continuously and automatically monitor surface deformation in permafrost regions, solve the problems of low time resolution, poor accuracy and high cost of data obtained in the past, and realize high time series continuous monitoring of data and automatic data transmission , which reduces the cost of observation and collection, and at the same time avoids human error, making the acquired data more real and accurate

Images