Device for measuring temperature of firn layer of unattended polar region while drilling

Abstract

The invention discloses a device for measuring the temperature of a firn layer of an unattended polar region while drilling, and belongs to the field of drilling machines. The device comprises a derrick pulley, an encoder, a pulley bracket, a derrick pressure sensor, a drilling tower, a power supply temperature measurement cable, a hot-melt drilling tool, a control box, a winch, a winch motor anda drilling tower base, wherein the top of the drilling tower is provided with the derrick pulley, the derrick pressure sensor is fixed between the pulley bracket and the drilling tower and used for monitoring the drilling pressure in time, and a shaft end of the derrick pulley is connected with the encoder to achieve the detection of the drilling speed. The winch completes lowering and lifting ofthe hot-melt drilling tool by lifting and lowering the power supply temperature measurement cable. The power supply temperature measurement cable is formed by connecting two cables in parallel, one cable is used for supplying power to the hot-melt drilling tool, the other cable is used for completing the measurement of the drill hole temperature. The automatic control of the control box achieves unattended drilling, thereby greatly reducing the labor intensity of field staff. The device can achieve the wide-range multi-point rapid measurement of the temperature distribution of polar ice sheets, and has a wide application prospect.

Description

Technical field [0001] The invention relates to the field of drilling equipment, in particular to an unmanned polar snow layer temperature measurement device while drilling. Background technique [0002] As the largest cold source in the Earth’s climate system, the Antarctic ice sheet will affect global atmospheric circulation, global climate change and sea level changes due to changes in its thermal conditions. It is a sensitive and critical area for studying global climate change. Temperature is one of the important indicators that express the characteristics of heat. It is an important parameter for the analysis of heat resources. It is also an important detection indicator to measure the many environmental problems caused by climate change itself. And because of the special geographical location and unique natural environment of the Antarctic ice sheet, it is of great significance to the spatial analysis of the measured temperature data of Antarctica. The snow temperature at...

AI Technical Summary

Problems solved by technology

The temperature measurement method in the ice layer is often carried out by drilling a hole at the target location and inserting a temperature sensor. The drilling is generally combined with shallow ice core drilling or deep ice core drilling. The construction period ranges from 7-10 days to 3 days at most. -5 years, it takes a long time, especially in the harsh environment of the polar region, the long time consuming means that the measurement cost will increase greatly, and it is limited by the current Antarctic scientific expedition logistics support ability, it is difficult to carry out in a large area and multiple points measurement, so the obtained temperature distribution is very geographically limited

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