A device and method for monitoring in-situ enrichment of trace gases in polar ice layers while drilling

Abstract

The application discloses a device and method for monitoring in-situ enrichment of trace gases in Antarctic ice layer while drilling, and belongs to the technical field of environmental monitoring. In the drilling process, the device is combined with a bionic bird lung chamber, a gas pump and a bionic pre-concentrator to realize in-situ enrichment and monitoring of trace gases in Antarctic ice layer. The device adopts the gas dynamics principle optimized according to Murry's law to ensure the best contact between gas molecules and adsorption materials, and improve the enrichment efficiency and detection sensitivity. The device can avoid the pollution risk in the sample transportation process, reduce the complexity of sample pretreatment, has high sensitivity and reliability in monitoring, is suitable for real-time monitoring in extreme environmental conditions, and provides an important tool for Antarctic environmental change research.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of environmental monitoring, and specifically relates to a device and method for monitoring trace gases in Antarctic ice layers in situ while drilling. BACKGROUND

[0002] With the increasing global climate change, environmental monitoring in Antarctica has become particularly important. As the most pristine and extreme environment on Earth, Antarctica's unique climate and ecosystem are highly sensitive to environmental changes. Monitoring trace gases in Antarctic ice layers is of great significance for understanding global climate change, studying paleoclimate and atmospheric composition changes. For example, carbon dioxide, methane and other gases in the ice layer can provide important information about the past atmospheric composition and climate change. Changes in carbon dioxide concentration can reveal historical greenhouse effect and climate warming trends, and methane is a potent greenhouse gas, and its historical concentration changes are of great significance to understanding the Earth's climate system. However, due to the remote geographical location of Antarctica and the extreme climate conditions, traditional ice layer trace gas monitoring methods face many challenges in Antarctica. For example, it is difficult to transport equipment, equipment is prone to failure in extreme low temperature environment, and it is difficult to perform routine sample processing. These factors limit the application of existing monitoring methods in the Antarctic environment, and there is an urgent need for a new and efficient ice layer trace gas monitoring technology. Currently, conventional ice layer trace gas monitoring methods usually rely on on-site sampling and sample transportation back to the laboratory for analysis. This process not only consumes time and effort, but also has the risk of sample contamination or deterioration during transportation, which affects the accuracy and reliability of the monitoring results.

[0003] The in-situ monitoring technology while drilling in the present application greatly reduces the risk of sample contamination or degradation by monitoring Antarctic ice layer samples in situ during drilling, and is very suitable for application in the extreme environment of Antarctica. This technology avoids complex sample pretreatment process and reduces dependence on expensive laboratory equipment, making it an ideal choice for monitoring Antarctic ice layer gases. Through the combination of in-situ monitoring technology while drilling and real-time pre-concentration device, trace gases in the ice layer can be directly collected and enriched during drilling, thereby achieving efficient and accurate on-site monitoring. This technology not only improves monitoring efficiency and reduces sample processing time, but also ensures the accuracy and reliability of the monitoring results.

[0004] Pre-concentration is of great significance in trace gas detection, as it can effectively capture and increase the concentration of trace gases in the sample, thereby improving the sensitivity and accuracy of the monitoring device. Current pre-concentrators are typically based on traditional engineering design, but the introduction of bionics principles has led to the development of a new type of pre-concentrator. This device mimics the fluid transport system in nature and combines specific adsorption materials and structural design to more effectively capture and pre-concentrate trace gases in the ice layer. In addition, the introduction of bionic bird lung technology further reduces the waste of trace gases, thereby improving the sensitivity and reliability of the monitoring system under extremely low temperature conditions, while avoiding the increase in operational complexity. This new device that combines bionic pre-concentrator and bionic bird lung technology is particularly suitable for high-precision ice layer gas monitoring in complex environmental conditions such as Antarctica, and helps scientists gain a deeper understanding of the impact of climate change on the Antarctic environment.

[0005] In the face of the problems of insufficient sensitivity, operational complexity, and inability to achieve real-time monitoring in existing ice layer trace gas monitoring technology, the present invention uses the innovative design of combining bionic bird lung technology with the principle of Mohr's law, which not only significantly improves the sensitivity and efficiency of real-time monitoring, but also provides a key technical solution for high-precision ice layer gas monitoring in complex environmental conditions. Therefore, developing a device that integrates bionic pre-concentrator and bionic bird lung technology has become the main technical problem to solve real-time ice layer trace gas monitoring. SUMMARY

[0006] The present invention combines bionic pre-concentrator and bionic bird lung technology, and uses the gas dynamics principle optimized by Mohr's law to propose a device and method for high-sensitivity, cost-effective, stable and reliable, and rapid and accurate implementation of wide-area real-time ice layer trace gas monitoring in Antarctica.

[0007] The monitoring device for monitoring the enrichment of the trace gas in the Antarctic ice layer in-situ while drilling comprises a bionic bird lung chamber IA1, an air pipe IIa, an air pump IB1, a shell IC1, a motor 2, a rotating support D, a bionic pre-concentrator group E, a top cover group F, a shell II C2, an air pump II B2, an air pipe IIb, a bionic bird lung chamber II A2 and an optical monitoring instrument 3, wherein the bionic bird lung chamber IA1, the air pump IB1, the shell IC1, the motor 2, the rotating support D, the shell II C2, the air pump II B2, the bionic bird lung chamber II A2 and the optical monitoring instrument 3 are arranged in sequence from front to back; the air pump IB1 is fixedly connected to the support I8 of the bionic bird lung chamber IA1, and the air pump II B2 is fixedly connected to the support I of the bionic bird lung chamber II A2; the front end of the air pipe IIa is communicated with the air inlet II7, and the rear end of the air pipe IIa is communicated with the air inlet pipe 17 of the bionic pre-concentrator IE1 of the bionic pre-concentrator group E; the front end of the air pipe IIb is communicated with the air inlet II7, and the rear end of the air pipe IIb is communicated with the air inlet pipe 17 of the bionic pre-concentrator II E2 of the bionic pre-concentrator group E; the middle part of the air pipe IIa is connected with the guide rail II10a of the shell IC1 and the shell II C2; the middle part of the air pipe IIb is connected with the guide rail II10b of the shell IC1 and the shell II C2; the output shaft of the motor 2 is in interference connection with the center hole II11 of the rotating support D, the front end of the motor 2 is fixedly connected to the rear end of the center hole II11 of the shell IC1, the hole pair 15 of the rotating support D corresponds to the rear end hole pair of the motor 2, and the hole pair 15 is used for determining the installation position reference of the motor 2; the bionic pre-concentrator IV E4, the bionic pre-concentrator IE1, the bionic pre-concentrator III E3 and the bionic pre-concentrator II E2 in the bionic pre-concentrator group E are respectively fixedly connected to the upper, lower, left and right four sides of the shell 12 of the rotating support D in sequence; and the rear end of the shell IC1 and the front end of the shell II C2 are threadedly connected.

[0008] The bionic bird lung chamber IA1 and the bionic bird lung chamber II A2 are the same in structure and opposite in direction, and each comprises a gas storage tank 4 and a support I8, wherein the gas storage tank 4 and the support I8 are arranged in sequence and fixedly connected; the front end of the gas storage tank 4 is provided with a center air inlet I6, the right side of the gas storage tank 4 is provided with an air inlet II7, and the rear end of the gas storage tank 4 is provided with a gas outlet I5.

[0009] The shell IC1 and the shell II C2 are the same in structure and opposite in direction, the shell body 9 of the shell IC1 and the shell II C2 is disc-shaped, and the end surface of the shell body 9 is provided with a center hole II11 and 4-6 holes of a side hole group 10.

[0010] The rotating support D comprises a shell 12 and a reinforcing rib 13, the shell 12 is a square hollow pipe, and the reinforcing rib 13 is fixedly connected to the center of the square hollow pipe of the shell 12; the reinforcing rib 13 is provided with a center hole II14 and two holes of a hole pair 15; and 12-16 holes of a hole group 16 are arranged on the left and right two sides of the square hollow pipe and the four sides of the rotating support D.

[0011] The bionic pre-concentrator group E is composed of bionic pre-concentrator I E1, bionic pre-concentrator II E2, bionic pre-concentrator III E3 and bionic pre-concentrator IV E4, each of which is composed of an air inlet pipe 17, a support III 18, an enrichment structure 19 conforming to the Moore law, a threaded orifice plate 20 and an air outlet pipe 21, which are arranged in sequence from front to back and fixedly connected; the threaded orifice plate 20 is embedded in the support III 18, and the enrichment structure 19 conforming to the Moore law is fixedly connected to the center of the threaded orifice plate 20; the enrichment structure 19 conforming to the Moore law is composed of a first-level channel 19a, a second-level channel 19b, a third-level channel 19c and a fourth-level channel 19d, wherein each level of flow channel follows the principle of half reduction of flow channel width, wherein the width of the first-level channel 19a is , the width of the second-level channel 19b is , the width of the third-level channel 19c is , and the width of the fourth-level channel 19d is , that is The top cover group F is composed of four top covers, which are respectively threadedly connected with the threaded orifice plates of the bionic pre-concentrator I E1, the bionic pre-concentrator II E2, the bionic pre-concentrator III E3 and the bionic pre-concentrator IV E4.

[0012] The monitoring method of the in-situ Antarctic ice layer trace gas enrichment monitoring device based on drilling comprises the following steps:

[0013] 1. The gas to be measured enters the bionic bird lung chamber I A1, and is introduced into the bionic pre-concentrator I E1 by the air pump I B1, with a flow rate controlled at 5sccm and continuous ventilation;

[0014] 2. The pre-concentrated waste gas enters the bionic pre-concentrator II E2 again, and after 3 minutes, the bionic pre-concentrator I E1 and the bionic pre-concentrator II E2 are heated to 150 DEG C and kept for 30 seconds;

[0015] 3. The gas resolved from the bionic pre-concentrator I E1 is sent into the optical monitoring instrument 3 by using the air pump I B1 and the air pump II B2, and the support D is rotated by starting the motor 2;

[0016] 4. The gas resolved from the bionic pre-concentrator II E2 is sent into the optical monitoring instrument 3 again by using the air pump I B1 and the air pump II B2, and the support D is rotated again by starting the motor 2;

[0017] 5. The bionic pre-concentrator III E3 is turned to the initial position of the bionic pre-concentrator I E1, and the next pre-concentration process is started;

[0018] 6. The detected gas signal is transmitted to the computer through the optical monitoring instrument 3.

[0019] The working principle and working process of the present application are as follows:

[0020] The in-situ Antarctic ice layer trace gas enrichment monitoring gas pre-concentration device for drilling adopted by the present application is based on the integrated application of bionic bird lung technology and bionic pre-concentrator, and is realized through the gas dynamics principle optimized by the Murray law. The Murray law guides the optimal design of the gas flow path, ensures the best contact of gas molecules with the adsorption material, and thus improves the enrichment efficiency and monitoring sensitivity. The device simulates the efficient gas exchange system of birds through two sets of gas pump systems, optimizes the gas flow and enrichment process in the concentrator, reduces energy consumption, and at the same time enhances the separation and enrichment capacity of the gas components.

[0021] The present application adopts the design concept based on the Murray law, and creates a high-efficiency ice layer trace gas enrichment device, the core of which is four concentrators designed according to the Murray law. These concentrators are constructed according to the principle of halving the flow channel width step by step, and the specific formula is:

[0022]

[0023] Among them, is the cross-sectional area of the parent branch, is the cross-sectional area of the child branch, is the cross-sectional width of the parent branch, is the cross-sectional width of the child branch, is the length of the parent branch, is the length of the child branch. This design ensures that the flow rate of the ice layer trace gas and the carrier gas flowing through the concentrator is uniform, thereby optimizing the adsorption amount of the material.

[0024] In order to realize the efficient enrichment and analysis process, the working process of the device of the present application is as follows: the in-situ Antarctic ice layer trace gas pre-concentration device for drilling based on the present application is integrated with the bionic bird lung technology and the bionic pre-concentrator, combined with the gas dynamics principle optimized by the Murray law, and realizes a high-efficiency ice layer trace monitoring method. In the working process of the device, the in-situ Antarctic ice layer trace gas enrichment device for drilling is first integrated into the geological drill bit to guide the gas in the ice layer to enter the device for preliminary enrichment. Subsequently, through two sets of gas pump systems, the continuous flow breathing mechanism of birds is simulated, and the gas circulates between the bionic pre-concentrator and the bionic bird lung chamber, realizing effective enrichment of the gas. After preliminary enrichment, according to the pipe design optimized by the Murray law, the contact efficiency of the gas and the adsorption material is further improved, thereby improving the enrichment efficiency and monitoring accuracy. After completion of the enrichment, the position of the concentrator is adjusted by the rotary motor, and the gas is analyzed by temperature rise, and the enriched gas is sent to the sensor chamber for component analysis by using rapid nitrogen purge, so as to accurately monitor the gas content in the ice layer.

[0025] The beneficial effects of the present application are that: by combining the bionic bird lung technology with the bionic pre-concentrator, and adopting the gas dynamics principle optimized by the Moore's law, the present application realizes high sensitivity and high precision monitoring of trace gases in ice layer. This innovative design significantly improves the accuracy of ice layer trace gas monitoring under complex environmental conditions, while greatly reducing the false positive rate caused by environmental variation. The drilling in-situ Antarctic ice layer trace gas enrichment monitoring device of the present application adopts miniaturized design, has the characteristics of small device volume, low cost and real-time monitoring on site, and can be effectively applied to on-site rapid ice layer trace gas monitoring work. This not only promotes the efficiency and effectiveness of environmental protection, but also brings higher economic benefits to the environmental monitoring industry with low-cost design. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is an exploded view of the drilling in-situ Antarctic ice layer trace gas enrichment monitoring device;

[0027] Figure 2 is a sectional view of the drilling in-situ Antarctic ice layer trace gas enrichment monitoring device;

[0028] Figure 3 is a front view of the bionic bird lung chamber IA1;

[0029] Figure 4 is a left sectional view of the bionic bird lung chamber IA1;

[0030] Figure 5 is a left view of the shell IC1;

[0031] Figure 6 is a sectional view of the shell IC1;

[0032] Figure 7 is a top view of the rotating support D;

[0033] Figure 8 is a sectional view of the rotating support D;

[0034] Figure 9 is a top view of the rotating support D and the bionic pre-concentrator group E assembly;

[0035] Figure 10 is a top view of the bionic pre-concentrator;

[0036] Figure 11 is a sectional view of the bionic pre-concentrator;

[0037] Figure 12 is an enlarged view of the Moore's law flow channel part in the bionic pre-concentrator;

[0038] Figure 13 is a dimensioned view of the Moore's law flow channel part in the bionic pre-concentrator;

[0039] Figure 14 is a left sectional view of the biomimetic pre-concentrator;

[0040] Figure 15 is a schematic diagram of in-situ drilling of trace gases from the Antarctic ice layer;

[0041] Wherein: A1. biomimetic bird lung chamber I; A2. biomimetic bird lung chamber II; B1. air pump I; B2. air pump II; C1. shell I; C2. shell II; D. rotating support; E. biomimetic pre-concentrator group; E1. biomimetic pre-concentrator I; E2. biomimetic pre-concentrator II; E3. biomimetic pre-concentrator III; E4. biomimetic pre-concentrator IV; F. top cover group; 1a. air pipe I; 1b. air pipe II; 2. motor; 3. optical monitoring instrument; 4. gas storage tank; 5. air outlet I; 6. air inlet I; 7. air inlet II; 8. support I; 9. shell; 10. side hole group; 10a. guide rail I; 10b. guide rail II; 11. center hole I; 12. shell; 13. reinforcing rib; 14. center hole II; 15. hole pair; 16. hole group; 17. air inlet pipe; 18. support III; 19. enrichment structure conforming to the Murray's law; 19a. primary channel; 19b. secondary channel; 19c. tertiary channel; 19d. quaternary channel; 20. threaded hole plate; 21. air outlet pipe; 22. Antarctic ice layer; 23. geological drill bit; 24. biomimetic pre-concentrator. DETAILED DESCRIPTION

[0042] The present application is described below in conjunction with the accompanying drawings.

[0043] As Figures 1-2As shown in the figure, the monitoring device for in-situ enrichment of trace gases in Antarctic ice layer while drilling according to the present application is composed of a bionic bird lung chamber IA1, an air pipe IIa, an air pump IB1, a shell IC1, a motor 2, a rotating support D, a bionic pre-concentrator group E, a top cover group F, a shell IIc2, an air pump IIb2, an air pipe IIb, a bionic bird lung chamber IIa2 and an optical monitoring instrument 3, wherein the bionic bird lung chamber IA1, the air pump IB1, the shell IC1, the motor 2, the rotating support D, the shell IIc2, the air pump IIb2, the bionic bird lung chamber IIa2 and the optical monitoring instrument 3 are arranged in sequence from front to back; the air pump IB1 is fixedly connected to the support I8 of the bionic bird lung chamber IA1, and the air pump IIb2 is fixedly connected to the support I of the bionic bird lung chamber IIa2; the front end of the air pipe IIa is communicated with the air inlet II7, and the rear end of the air pipe IIa is communicated with the air inlet pipe 17 of the bionic pre-concentrator IE1 of the bionic pre-concentrator group E; the front end of the air pipe IIb is communicated with the air inlet II7, and the rear end of the air pipe IIb is communicated with the air inlet pipe 17 of the bionic pre-concentrator IIe2 of the bionic pre-concentrator group E; the middle part of the air pipe IIa is connected with the guide rail II10a of the shell IC1 and the shell IIc2; the middle part of the air pipe IIb is connected with the guide rail II10b of the shell IC1 and the shell IIc2; the output shaft of the motor 2 is interference-connected with the center hole II11 of the rotating support D, the front end of the motor 2 is fixedly connected to the rear end of the center hole II11 of the shell IC1, the hole pairs 15 of the rotating support D are corresponding to the rear end hole pairs of the motor 2, and are used for determining the installation position reference of the motor 2; the bionic pre-concentrator IVe4, the bionic pre-concentrator IE1, the bionic pre-concentrator IIIE3 and the bionic pre-concentrator IIe2 of the bionic pre-concentrator group E are fixedly connected to the upper, lower, left and right four sides of the shell 12 of the rotating support D in sequence; and the rear end of the shell IC1 and the front end of the shell IIc2 are threadedly connected.

[0044] As shown in the figure, Figures 3-4 The bionic bird lung chamber IA1 and the bionic bird lung chamber IIa2 are the same in structure and opposite in direction, and are each composed of a gas storage tank 4 and a support I8, and the gas storage tank 4 and the support I8 are arranged in sequence and fixedly connected.

[0045] As shown in the figure, Figures 5-6 The shell IC1 and the shell IIc2 are the same in structure and opposite in direction, the shell body 9 of the shell IC1 and the shell IIc2 is disc-shaped, and the end surface of the shell body 9 is provided with a center hole II11 and 4-6 holes of the side hole group 10.

[0046] As shown in the figure, Figures 7-8As shown, the rotating bracket D consists of an outer shell 12 and a reinforcing rib 13. The outer shell 12 is a square hollow tube, and the reinforcing rib 13 is fixed to the center of the square hollow tube of the outer shell 12. The reinforcing rib 13 is provided with two holes, a central hole II 14 and a hole pair 15. The hole group 16 has 12-16 holes on the left and right sides of the square hollow tube and the four sides of the rotating bracket D.

[0047] like Figures 9-12 The biomimetic pre-concentrator group E consists of four biomimetic pre-concentrators with identical structures: IE1, IE2, IE3, and IE4. Each biomimetic pre-concentrator comprises an inlet pipe 17, a support 18, an enrichment structure 19 conforming to Maurice's law, a threaded perforated plate 20, and an outlet pipe 21. The inlet pipe 17, support 18, and outlet pipe 21 are arranged sequentially from front to back and fixedly connected. The threaded perforated plate 20 is embedded in the support 18, and the enrichment structure 19 conforming to Maurice's law is fixed to the center of the threaded perforated plate 20. The enrichment structure 19 conforming to Maurice's law consists of a primary channel 19a, a secondary channel 19b, a tertiary channel 19c, and a quaternary channel 19d. The width of each channel decreases by half with each stage. Specifically, the width of the primary channel 19a is... The width of secondary channel 19b is The width of the third-level channel 19c is The width of the fourth-level channel 19d is ,Right now .

[0048] The monitoring method of the present invention based on the in-situ Antarctic ice layer trace gas enrichment device during drilling includes the following steps:

[0049] 1. The gas to be tested enters the bionic bird lung chamber IA1, and is introduced into the bionic pre-concentrator IE1 by the air pump IB1, with the flow rate controlled at 5 sccm, and continuous ventilation is provided;

[0050] 2. The pre-concentrated exhaust gas re-enters the biomimetic pre-concentrator IIE2. After 3 minutes, the biomimetic pre-concentrators IE1 and IIE2 are heated to 150°C and held for 30 seconds.

[0051] 3. Use air pumps IB1 and IIB2 to send the gas extracted from the biomimetic pre-concentrator IE1 into the optical monitoring instrument 3, and at the same time start the motor 2 to rotate the support D;

[0052] 4. Use air pumps IB1 and IIB2 again to send the gas extracted from the bionic pre-concentrator IIE2 into the optical monitoring instrument 3, and start motor 2 to rotate bracket D again;

[0053] 5. Move the bionic pre-concentrator ⅢE3 to the initial position of the bionic pre-concentrator ⅠE1 to begin the next pre-concentration process;

[0054] 6. The detected gas signal is transmitted to the computer via the optical monitoring instrument 3.

Claims

1. A device for monitoring in-situ enrichment of Antarctic ice layer trace gases while drilling, comprising a biomimetic bird lung chamber I (A1), an air pipe I (1a), an air pump I (B1), a shell I (C1), a motor (2), a rotating support (D), a biomimetic pre-concentrator group (E), a top cover group (F), a shell II (C2), an air pump II (B2), an air pipe II (1b), a biomimetic bird lung chamber II (A2) and an optical monitoring instrument (3), wherein the biomimetic bird lung chamber I (A1), the air pump I (B1), the shell I (C1), the motor (2), the rotating support (D), the shell II (C2), the air pump II (B2), the biomimetic bird lung chamber II (A2) and the optical monitoring instrument (3) are arranged in order from front to back; the air pump I (B1) is fixedly connected to the support I (8) of the biomimetic bird lung chamber I (A1), and the air pump II (B2) is fixedly connected to the support I of the biomimetic bird lung chamber II (A2); the front end of the air pipe I (1a) is communicated with the air inlet II (7), and the rear end of the air pipe I (1a) is communicated with the air inlet pipe (17) of the biomimetic pre-concentrator I (E1) of the biomimetic pre-concentrator group (E); the front end of the air pipe II (1b) is communicated with the air inlet II (7), and the rear end of the air pipe II (1b) is communicated with the air inlet pipe (17) of the biomimetic pre-concentrator II (E2) of the biomimetic pre-concentrator group (E); the middle part of the air pipe I (1a) is connected with the guide rail I (10a) of the shell I (C1) and the shell II (C2); the middle part of the air pipe II (1b) is connected with the guide rail II (10b) of the shell I (C1) and the shell II (C2); the output shaft of the motor (2) is interference-connected with the center hole I (11) of the rotating support (D), the front end of the motor (2) is fixedly connected to the rear end of the center hole I (11) of the shell I (C1), the hole pair (15) of the rotating support (D) corresponds to the rear end hole pair of the motor (2), and is used for determining the installation position reference of the motor (2); the hole threaded plates of the biomimetic pre-concentrator IV (E4), the biomimetic pre-concentrator I (E1), the biomimetic pre-concentrator III (E3) and the biomimetic pre-concentrator II (E2) in the biomimetic pre-concentrator group (E) are fixedly connected to the upper, lower, left and right four sides of the shell (12) of the rotating support (D) in order; the rear end of the shell I (C1) and the front end of the shell II (C2) are threadedly connected.

2. The apparatus for monitoring of in-situ Antarctic ice layer trace gas enrichment while drilling according to claim 1, characterized in that, The biomimetic bird lung chamber I (A1) and the biomimetic bird lung chamber II (A2) are the same in structure and opposite in direction, and each comprises a gas storage tank (4) and a support I (8), which are arranged in order and fixedly connected; the front end of the gas storage tank (4) is provided with a center air inlet I (6), the right side of the gas storage tank (4) is provided with an air inlet II (7), and the rear end of the gas storage tank (4) is provided with a center air outlet I (5).

3. The apparatus for monitoring of in-situ Antarctic ice layer trace gas enrichment while drilling according to claim 1, characterized in that, The shell I (C1) and the shell II (C2) are the same in structure and opposite in direction, the shell body (9) of the shell I (C1) and the shell II (C2) is disc-shaped, and the end face of the shell body (9) is provided with a center hole I (11) and 4-6 holes of a side hole group (10).

4. The apparatus for monitoring of in-situ Antarctic ice layer trace gas enrichment while drilling according to claim 1, characterized in that, The rotating support (D) is composed of a shell (12) and a reinforcing rib (13), the shell (12) is a square hollow tube, the reinforcing rib (13) is fixedly connected to the center of the square hollow tube of the shell (12); the reinforcing rib (13) is provided with a central hole II (14) and two holes of a hole pair (15); 12-16 holes of a hole group (16) are arranged on the left and right side surfaces of the square hollow tube and the four surfaces of the rotating support (D).

5. The apparatus for monitoring of in-situ Antarctic ice layer trace gas enrichment while drilling according to claim 1, characterized by, The bionic pre-concentrator group (E) is composed of bionic pre-concentrator I (E1), bionic pre-concentrator II (E2), bionic pre-concentrator III (E3) and bionic pre-concentrator IV (E4) with the same structure, each of which is composed of an air inlet pipe (17), a bracket III (18), an enrichment structure (19) conforming to the Moore law, a threaded orifice plate (20) and an air outlet pipe (21), which are arranged in order from front to back and fixedly connected; the threaded orifice plate (20) is embedded in the bracket III (18), and the enrichment structure (19) conforming to the Moore law is fixedly connected to the center of the threaded orifice plate (20); the enrichment structure (19) conforming to the Moore law is composed of a first-level channel (19a), a second-level channel (19b), a third-level channel (19c) and a fourth-level channel (19d), wherein each level of flow channel follows the principle of half reduction of flow channel width, wherein the width of the first-level channel (19a) is , the width of the second-level channel (19b) is , the width of the third-level channel (19c) is , and the width of the fourth-level channel (19d) is , that is , the top cover group (F) is composed of four top covers, which are respectively threadedly connected with the threaded orifice plates of the bionic pre-concentrator I (E1), the bionic pre-concentrator II (E2), the bionic pre-concentrator III (E3) and the bionic pre-concentrator IV (E4).

6. A monitoring method based on the in-situ drilling polar ice layer trace gas enrichment monitoring device of claim 1, comprising the following steps: 1) The gas to be tested enters the biomimetic bird lung chamber I (A1), and is introduced into the biomimetic pre-concentrator I (E1) by the gas pump I (B1), the flow rate is controlled at 5sccm, and the ventilation is continuous; 2) The pre-concentrated waste gas enters the biomimetic pre-concentrator II (E2) again, after 3 minutes, the biomimetic pre-concentrator I (E1) and the biomimetic pre-concentrator II (E2) are heated to 150℃, and are kept for 30 seconds; 3) The gas resolved from the biomimetic pre-concentrator I (E1) is sent into the optical monitoring instrument (3) by using the gas pump I (B1) and the gas pump II (B2), and the motor (2) rotating support (D) is started at the same time; 4) The gas resolved from the biomimetic pre-concentrator II (E2) is sent into the optical monitoring instrument (3) by using the gas pump I (B1) and the gas pump II (B2) again, and the motor (2) rotating support (D) is started again; 5) The biomimetic pre-concentrator III (E3) is turned to the initial position of the biomimetic pre-concentrator I (E1), and the next pre-concentration process is started; 6) The detected gas signal is transmitted to the computer by the optical monitoring instrument (3).

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